/***
 * curtains.js v6.2.2
 * https://www.curtainsjs.com/
 *
 * @author: Martin Laxenaire
 * https://www.martin-laxenaire.fr/
 */
"use strict";function Curtains(t){(this.planes=[],this.renderTargets=[],this.shaderPasses=[],this._imageCache=[],this._drawStacks={opaque:{length:0,programs:[],order:[]},transparent:{length:0,programs:[],order:[]},renderPasses:[],scenePasses:[]},this._drawingEnabled=!0,this._forceRender=!1,this._autoResize=t.autoResize,null!==this._autoResize&&void 0!==this._autoResize||(this._autoResize=!0),this._autoRender=t.autoRender,null!==this._autoRender&&void 0!==this._autoRender||(this._autoRender=!0),this._watchScroll=t.watchScroll,null!==this._watchScroll&&void 0!==this._watchScroll||(this._watchScroll=!0),this.pixelRatio=t.pixelRatio||window.devicePixelRatio||1,t.renderingScale=isNaN(t.renderingScale)?1:parseFloat(t.renderingScale),this._renderingScale=Math.max(.25,Math.min(1,t.renderingScale)),this.premultipliedAlpha=t.premultipliedAlpha||!1,this.alpha=t.alpha,null!==this.alpha&&void 0!==this.alpha||(this.alpha=!0),this.antialias=t.antialias,null!==this.antialias&&void 0!==this.antialias||(this.antialias=!0),this.productionMode=t.production||!1,"string"==typeof t)&&(console.warn("Since v4.0 you should use an object to pass your container and other parameters. Please refer to the docs: https://www.curtainsjs.com/documentation.html"),t={container:t});t.container?this.setContainer(t.container):this.productionMode||console.warn("No container HTML element or ID provided. Use setContainer() method to set a container and initialize the WebGL context")}Curtains.prototype.setContainer=function(t){if(t){if("string"==typeof t){if(this.container=document.getElementById(t),!this.container)return void(this.productionMode||console.warn("No container HTML element or ID provided. WebGL context couldn't be created"))}else t instanceof Element&&(this.container=t);this._init()}else this.productionMode||console.warn("No container HTML element or ID provided. WebGL context couldn't be created")},Curtains.prototype._init=function(){this.glCanvas=document.createElement("canvas");var t={alpha:this.alpha,premultipliedAlpha:this.premultipliedAlpha,antialias:this.antialias};if(this.gl=this.glCanvas.getContext("webgl2",t),this._isWebGL2=!!this.gl,this.gl||(this.gl=this.glCanvas.getContext("webgl",t)||this.glCanvas.getContext("experimental-webgl",t)),!this.gl)return this.productionMode||console.warn("WebGL context could not be created"),void(this._onErrorCallback&&this._onErrorCallback());this._getExtensions(),this._glState={currentProgramID:null,programs:[],currentBuffersID:0,setDepth:null,frameBufferID:null,scenePassIndex:null,cullFace:null,flipY:null},this._contextLostHandler=this._contextLost.bind(this),this.glCanvas.addEventListener("webglcontextlost",this._contextLostHandler,!1),this._contextRestoredHandler=this._contextRestored.bind(this),this.glCanvas.addEventListener("webglcontextrestored",this._contextRestoredHandler,!1),this._scrollManager={handler:this._scroll.bind(this,!0),shouldWatch:this._watchScroll,xOffset:window.pageXOffset,yOffset:window.pageYOffset,lastXDelta:0,lastYDelta:0},this._watchScroll&&window.addEventListener("scroll",this._scrollManager.handler,{passive:!0}),this.setPixelRatio(this.pixelRatio,!1),this._resizeHandler=null,this._autoResize&&(this._resizeHandler=this.resize.bind(this,!0),window.addEventListener("resize",this._resizeHandler,!1)),this._readyToDraw()},Curtains.prototype._getExtensions=function(){this._extensions=[],this._isWebGL2?(this._extensions.EXT_color_buffer_float=this.gl.getExtension("EXT_color_buffer_float"),this._extensions.OES_texture_float_linear=this.gl.getExtension("OES_texture_float_linear"),this._extensions.WEBGL_lose_context=this.gl.getExtension("WEBGL_lose_context")):(this._extensions.OES_vertex_array_object=this.gl.getExtension("OES_vertex_array_object"),this._extensions.OES_texture_float=this.gl.getExtension("OES_texture_float"),this._extensions.OES_texture_float_linear=this.gl.getExtension("OES_texture_float_linear"),this._extensions.OES_texture_half_float=this.gl.getExtension("OES_texture_half_float"),this._extensions.OES_texture_half_float_linear=this.gl.getExtension("OES_texture_half_float_linear"),this._extensions.OES_element_index_uint=this.gl.getExtension("OES_element_index_uint"),this._extensions.OES_standard_derivatives=this.gl.getExtension("OES_standard_derivatives"),this._extensions.EXT_sRGB=this.gl.getExtension("EXT_sRGB"),this._extensions.WEBGL_depth_texture=this.gl.getExtension("WEBGL_depth_texture"),this._extensions.WEBGL_draw_buffers=this.gl.getExtension("WEBGL_draw_buffers"),this._extensions.WEBGL_lose_context=this.gl.getExtension("WEBGL_lose_context"))},Curtains.prototype.setPixelRatio=function(t,e){this.pixelRatio=parseFloat(Math.max(t,1))||1,this.resize(e)},Curtains.prototype._setSize=function(){var t=this.container.getBoundingClientRect();this._boundingRect={width:t.width*this.pixelRatio,height:t.height*this.pixelRatio,top:t.top*this.pixelRatio,left:t.left*this.pixelRatio};var e=!!navigator.userAgent.match(/Version\/[\d\.]+.*Safari/),i=/iPad|iPhone|iPod/.test(navigator.userAgent)&&!window.MSStream;if(e&&i){this._boundingRect.top=function(t){for(var e=0;t&&!isNaN(t.offsetTop);)e+=t.offsetTop-t.scrollTop,t=t.offsetParent;return e}(this.container)*this.pixelRatio}this.glCanvas.style.width=Math.floor(this._boundingRect.width/this.pixelRatio)+"px",this.glCanvas.style.height=Math.floor(this._boundingRect.height/this.pixelRatio)+"px",this.glCanvas.width=Math.floor(this._boundingRect.width*this._renderingScale),this.glCanvas.height=Math.floor(this._boundingRect.height*this._renderingScale),this.gl.viewport(0,0,this.gl.drawingBufferWidth,this.gl.drawingBufferHeight),this._scrollManager.shouldWatch&&(this._scrollManager.xOffset=window.pageXOffset,this._scrollManager.yOffset=window.pageYOffset)},Curtains.prototype.getBoundingRect=function(){return this._boundingRect},Curtains.prototype.resize=function(t){this._setSize();for(var e=0;e<this.planes.length;e++)this.planes[e]._canDraw&&this.planes[e].planeResize();for(e=0;e<this.shaderPasses.length;e++)this.shaderPasses[e]._canDraw&&this.shaderPasses[e].planeResize();for(e=0;e<this.renderTargets.length;e++)this.renderTargets[e].resize();this.needRender();var i=this;setTimeout(function(){i._onAfterResizeCallback&&t&&i._onAfterResizeCallback()},0)},Curtains.prototype._scroll=function(){var t={x:window.pageXOffset,y:window.pageYOffset};if(this.updateScrollValues(t.x,t.y),this._scrollManager.shouldWatch){for(var e=0;e<this.planes.length;e++)this.planes[e].watchScroll&&this.planes[e].updateScrollPosition();this.needRender()}this._onScrollCallback&&this._onScrollCallback()},Curtains.prototype.updateScrollValues=function(t,e){var i=this._scrollManager.xOffset;this._scrollManager.xOffset=t,this._scrollManager.lastXDelta=i-this._scrollManager.xOffset;var s=this._scrollManager.yOffset;this._scrollManager.yOffset=e,this._scrollManager.lastYDelta=s-this._scrollManager.yOffset},Curtains.prototype.getScrollDeltas=function(){return{x:this._scrollManager.lastXDelta,y:this._scrollManager.lastYDelta}},Curtains.prototype.getScrollValues=function(){return{x:this._scrollManager.xOffset,y:this._scrollManager.yOffset}},Curtains.prototype.enableDrawing=function(){this._drawingEnabled=!0},Curtains.prototype.disableDrawing=function(){this._drawingEnabled=!1},Curtains.prototype.needRender=function(){this._forceRender=!0},Curtains.prototype._contextLost=function(t){t.preventDefault(),this._glState={currentProgramID:null,programs:[],currentBuffersID:0,setDepth:null,frameBufferID:null,scenePassIndex:null,cullFace:null,flipY:null},this._animationFrameID&&window.cancelAnimationFrame(this._animationFrameID);var e=this;setTimeout(function(){e._onContextLostCallback&&e._onContextLostCallback()},0)},Curtains.prototype.restoreContext=function(){this.gl&&this._extensions.WEBGL_lose_context?this._extensions.WEBGL_lose_context.restoreContext():this.productionMode||(this.gl?this._extensions.WEBGL_lose_context||console.warn("Could not restore context because the restore context extension is not defined"):console.warn("Could not restore context because the context is not defined"))},Curtains.prototype._contextRestored=function(){var t=this._drawingEnabled;this._drawingEnabled=!1,this._getExtensions(),this._setBlendFunc(),this._setDepth(!0),this._drawStacks={opaque:{length:0,programs:[],order:[]},transparent:{length:0,programs:[],order:[]},renderPasses:[],scenePasses:[]},this._imageCache=[];for(var e=0;e<this.renderTargets.length;e++)this.renderTargets[e]._restoreContext();for(e=0;e<this.planes.length;e++)this.planes[e]._restoreContext();for(e=0;e<this.shaderPasses.length;e++)this.shaderPasses[e]._restoreContext();this._onContextRestoredCallback&&this._onContextRestoredCallback(),this._drawingEnabled=t,this.needRender(),this._autoRender&&this._animate()},Curtains.prototype.dispose=function(){for(this._isDestroying=!0;this.planes.length>0;)this.removePlane(this.planes[0]);for(;this.shaderPasses.length>0;)this.removeShaderPass(this.shaderPasses[0]);for(;this.renderTargets.length>0;)this.removeRenderTarget(this.renderTargets[0]);for(var t=0;t<this._glState.programs.length;t++){var e=this._glState.programs[t];this.gl.deleteProgram(e.program)}this._glState={currentProgramID:null,programs:[],currentBuffersID:0,setDepth:null,frameBufferID:null,scenePassIndex:null,cullFace:null,flipY:null};var i=this,s=setInterval(function(){0===i.planes.length&&0===i.shaderPasses.length&&0===i.renderTargets.length&&(clearInterval(s),i._clear(),i._animationFrameID&&window.cancelAnimationFrame(i._animationFrameID),i._resizeHandler&&window.removeEventListener("resize",i._resizeHandler,!1),i._watchScroll&&window.removeEventListener("scroll",i._scrollManager.handler,{passive:!0}),i.glCanvas.removeEventListener("webgllost",i._contextLostHandler,!1),i.glCanvas.removeEventListener("webglrestored",i._contextRestoredHandler,!1),i.gl&&i._extensions.WEBGL_lose_context&&i._extensions.WEBGL_lose_context.loseContext(),i.glCanvas.width=i.glCanvas.width,i.gl=null,i.container.removeChild(i.glCanvas),i.container=null,i.glCanvas=null)},100)},Curtains.prototype._createShader=function(t,e){var i=this.gl.createShader(e);if(this.gl.shaderSource(i,t),this.gl.compileShader(i),!this.productionMode&&!this.gl.getShaderParameter(i,this.gl.COMPILE_STATUS)){for(var s=e===this.gl.VERTEX_SHADER?"vertex shader":"fragment shader",r=this.gl.getShaderSource(i).split("\n"),a=0;a<r.length;a++)r[a]=a+1+": "+r[a];return r=r.join("\n"),console.warn("Errors occurred while compiling the",s,":\n",this.gl.getShaderInfoLog(i)),console.error(r),null}return i},Curtains.prototype._isEqualShader=function(t,e){var i=!1;return 0===t.localeCompare(e)&&(i=!0),i},Curtains.prototype._setupProgram=function(t,e,i){for(var s={},r=0;r<this._glState.programs.length;r++)if(this._isEqualShader(this._glState.programs[r].vsCode,t)&&this._isEqualShader(this._glState.programs[r].fsCode,e)){s=this._glState.programs[r];break}if(s.program){if(i.shareProgram)return s;var a=this._useExistingShaders(s);return this._createProgram(a,i._type)}return!!(a=this._useNewShaders(t,e))&&this._createProgram(a,i._type)},Curtains.prototype._useExistingShaders=function(t){return{vs:{vertexShader:t.vertexShader,vsCode:t.vsCode},fs:{fragmentShader:t.fragmentShader,fsCode:t.fsCode}}},Curtains.prototype._useNewShaders=function(t,e){var i=!0,s=this._createShader(t,this.gl.VERTEX_SHADER),r=this._createShader(e,this.gl.FRAGMENT_SHADER);return s&&r||(this.productionMode||console.warn("Unable to find or compile the vertex or fragment shader"),i=!1),i?{vs:{vertexShader:s,vsCode:t},fs:{fragmentShader:r,fsCode:e}}:i},Curtains.prototype._createProgram=function(t,e){var i=this.gl,s=!0,r=i.createProgram();if(s&&(i.attachShader(r,t.vs.vertexShader),i.attachShader(r,t.fs.fragmentShader),i.linkProgram(r),this.productionMode||i.getProgramParameter(r,i.LINK_STATUS)||(console.warn("Unable to initialize the shader program."),s=!1),i.deleteShader(t.vs.vertexShader),i.deleteShader(t.fs.fragmentShader)),s){var a={id:this._glState.programs.length,vsCode:t.vs.vsCode,vertexShader:t.vs.vertexShader,fsCode:t.fs.fsCode,fragmentShader:t.fs.fragmentShader,program:r,type:e};return"Plane"===e&&(this._drawStacks.opaque.programs["program-"+a.id]=[],this._drawStacks.transparent.programs["program-"+a.id]=[]),this._glState.programs.push(a),a}return s},Curtains.prototype._useProgram=function(t){null!==this._glState.currentProgramID&&this._glState.currentProgramID===t.id||(this.gl.useProgram(t.program),this._glState.currentProgramID=t.id)},Curtains.prototype.addPlane=function(t,e){if(this.gl){if(!t||0===t.length)return this.productionMode||console.warn("The html element you specified does not currently exists in the DOM"),this._onErrorCallback&&this._onErrorCallback(),!1;var i=new Curtains.Plane(this,t,e);return i._usedProgram?this.planes.push(i):i=!1,i}return this.productionMode||console.warn("Unable to create a plane. The WebGl context couldn't be created"),this._onErrorCallback&&this._onErrorCallback(),null},Curtains.prototype.removePlane=function(t){t._canDraw=!1;var e,i=t._transparent?"transparent":"opaque";t&&t._dispose();for(var s=0;s<this.planes.length;s++)t.uuid===this.planes[s].uuid&&(e=s);t=null,this.planes[e]=null,this.planes.splice(e,1);for(s=0;s<this._glState.programs.length;s++)this._drawStacks.opaque.programs["program-"+this._glState.programs[s].id]=[],this._drawStacks.transparent.programs["program-"+this._glState.programs[s].id]=[];this._drawStacks.opaque.length=0,this._drawStacks.transparent.length=0;for(s=0;s<this.planes.length;s++){(t=this.planes[s]).index=s;var r=t._transparent?"transparent":"opaque";"transparent"===r?this._drawStacks[r].programs["program-"+t._usedProgram.id].unshift(t.index):this._drawStacks[r].programs["program-"+t._usedProgram.id].push(t.index),this._drawStacks[r].length++}for(s=0;s<this._drawStacks[i].order.length;s++){var a=this._drawStacks[i].order[s];0===this._drawStacks[i].programs["program-"+a].length&&this._drawStacks[i].order.splice(s,1)}this.gl&&this._clear(),this._glState.currentBuffersID=0},Curtains.prototype._stackPlane=function(t){var e=t._transparent?"transparent":"opaque",i=this._drawStacks[e];"transparent"===e?(i.programs["program-"+t._usedProgram.id].unshift(t.index),i.order.includes(t._usedProgram.id)||i.order.unshift(t._usedProgram.id)):(i.programs["program-"+t._usedProgram.id].push(t.index),i.order.includes(t._usedProgram.id)||i.order.push(t._usedProgram.id)),i.length++},Curtains.prototype.addRenderTarget=function(t){return this.gl?new Curtains.RenderTarget(this,t):(this.productionMode||console.warn("Unable to create a render target. The WebGl context couldn't be created"),this._onErrorCallback&&this._onErrorCallback(),null)},Curtains.prototype.removeRenderTarget=function(t){if(t._shaderPass)this.productionMode||console.warn("You're trying to remove a render target attached to a shader pass. You should remove that shader pass instead:",t._shaderPass);else{for(var e=0;e<this.planes.length;e++)this.planes[e].target&&this.planes[e].target.uuid===t.uuid&&(this.planes[e].target=null);var i;for(e=0;e<this.renderTargets.length;e++)t.uuid===this.renderTargets[e].uuid&&(i=e);this.renderTargets[i]=null,this.renderTargets.splice(i,1),t&&t._dispose(),t=null,this.gl&&this._clear(),this._glState.currentBuffersID=0}},Curtains.prototype.addShaderPass=function(t){if(this.gl){var e=new Curtains.ShaderPass(this,t);return e._usedProgram?(t.renderTarget?this._drawStacks.renderPasses.push(e.index):this._drawStacks.scenePasses.push(e.index),this.shaderPasses.push(e)):e=!1,e}return this.productionMode||console.warn("Unable to create a shader pass. The WebGl context couldn't be created"),this._onErrorCallback&&this._onErrorCallback(),null},Curtains.prototype.removeShaderPass=function(t){var e;t._canDraw=!1,t.target&&(t.target._shaderPass=null,this.removeRenderTarget(t.target),t.target=null);for(var i=0;i<this.shaderPasses.length;i++)t.uuid===this.shaderPasses[i].uuid&&(e=i);this.shaderPasses.splice(e,1),this._drawStacks.scenePasses=[],this._drawStacks.renderPasses=[];for(i=0;i<this.shaderPasses.length;i++)this.shaderPasses[i].index=i,this.shaderPasses[i]._isScenePass?this._drawStacks.scenePasses.push(this.shaderPasses[i].index):this._drawStacks.renderPasses.push(this.shaderPasses[i].index);0===this._drawStacks.scenePasses.length&&(this._glState.scenePassIndex=null),t&&t._dispose(),t=null,this.gl&&this._clear(),this._glState.currentBuffersID=0},Curtains.prototype._clear=function(){this.gl.clear(this.gl.COLOR_BUFFER_BIT|this.gl.DEPTH_BUFFER_BIT)},Curtains.prototype._bindFrameBuffer=function(t,e){var i=null;t?(i=t.index)!==this._glState.frameBufferID&&(this.gl.bindFramebuffer(this.gl.FRAMEBUFFER,t._frameBuffer),this.gl.viewport(0,0,t._size.width,t._size.height),t._shouldClear&&!e&&this._clear()):null!==this._glState.frameBufferID&&(this.gl.bindFramebuffer(this.gl.FRAMEBUFFER,null),this.gl.viewport(0,0,this.gl.drawingBufferWidth,this.gl.drawingBufferHeight)),this._glState.frameBufferID=i},Curtains.prototype._setDepth=function(t){t&&!this._glState.depthTest?(this._glState.depthTest=t,this.gl.enable(this.gl.DEPTH_TEST)):!t&&this._glState.depthTest&&(this._glState.depthTest=t,this.gl.disable(this.gl.DEPTH_TEST))},Curtains.prototype._setBlendFunc=function(){var t=this.gl;t.enable(t.BLEND),this.premultipliedAlpha?t.blendFuncSeparate(t.ONE,t.ONE_MINUS_SRC_ALPHA,t.ONE,t.ONE_MINUS_SRC_ALPHA):t.blendFuncSeparate(t.SRC_ALPHA,t.ONE_MINUS_SRC_ALPHA,t.ONE,t.ONE_MINUS_SRC_ALPHA)},Curtains.prototype._setFaceCulling=function(t){var e=this.gl;if(this._glState.cullFace!==t)if(this._glState.cullFace=t,"none"===t)e.disable(e.CULL_FACE);else{var i="front"===t?e.FRONT:e.BACK;e.enable(e.CULL_FACE),e.cullFace(i)}},Curtains.prototype._generateUUID=function(){return"xxxxxxxx-xxxx-4xxx-yxxx-xxxxxxxxxxxx".replace(/[xy]/g,function(t){var e=16*Math.random()|0;return("x"==t?e:3&e|8).toString(16).toUpperCase()})},Curtains.prototype._multiplyMatrix=function(t,e){var i=new Float32Array(16);return i[0]=e[0]*t[0]+e[1]*t[4]+e[2]*t[8]+e[3]*t[12],i[1]=e[0]*t[1]+e[1]*t[5]+e[2]*t[9]+e[3]*t[13],i[2]=e[0]*t[2]+e[1]*t[6]+e[2]*t[10]+e[3]*t[14],i[3]=e[0]*t[3]+e[1]*t[7]+e[2]*t[11]+e[3]*t[15],i[4]=e[4]*t[0]+e[5]*t[4]+e[6]*t[8]+e[7]*t[12],i[5]=e[4]*t[1]+e[5]*t[5]+e[6]*t[9]+e[7]*t[13],i[6]=e[4]*t[2]+e[5]*t[6]+e[6]*t[10]+e[7]*t[14],i[7]=e[4]*t[3]+e[5]*t[7]+e[6]*t[11]+e[7]*t[15],i[8]=e[8]*t[0]+e[9]*t[4]+e[10]*t[8]+e[11]*t[12],i[9]=e[8]*t[1]+e[9]*t[5]+e[10]*t[9]+e[11]*t[13],i[10]=e[8]*t[2]+e[9]*t[6]+e[10]*t[10]+e[11]*t[14],i[11]=e[8]*t[3]+e[9]*t[7]+e[10]*t[11]+e[11]*t[15],i[12]=e[12]*t[0]+e[13]*t[4]+e[14]*t[8]+e[15]*t[12],i[13]=e[12]*t[1]+e[13]*t[5]+e[14]*t[9]+e[15]*t[13],i[14]=e[12]*t[2]+e[13]*t[6]+e[14]*t[10]+e[15]*t[14],i[15]=e[12]*t[3]+e[13]*t[7]+e[14]*t[11]+e[15]*t[15],i},Curtains.prototype._scaleMatrix=function(t,e,i,s){var r=new Float32Array(16);return r[0]=e*t[0],r[1]=e*t[1],r[2]=e*t[2],r[3]=e*t[3],r[4]=i*t[4],r[5]=i*t[5],r[6]=i*t[6],r[7]=i*t[7],r[8]=s*t[8],r[9]=s*t[9],r[10]=s*t[10],r[11]=s*t[11],t!==r&&(r[12]=t[12],r[13]=t[13],r[14]=t[14],r[15]=t[15]),r},Curtains.prototype._composeMatrixFromOrigin=function(t,e,i,s){var r=new Float32Array(16),a=e[0],n=e[1],o=e[2],h=e[3],u=a+a,l=n+n,_=o+o,c=a*u,d=a*l,p=a*_,g=n*l,f=n*_,m=o*_,x=h*u,v=h*l,P=h*_,y=i.x,b=i.y,C=s.x,T=s.y,S=s.z,w=(1-(g+m))*y,R=(d+P)*y,M=(p-v)*y,E=(d-P)*b,B=(1-(c+m))*b,D=(f+x)*b,F=1*(p+v),A=1*(f-x),L=1*(1-(c+g));return r[0]=w,r[1]=R,r[2]=M,r[3]=0,r[4]=E,r[5]=B,r[6]=D,r[7]=0,r[8]=F,r[9]=A,r[10]=L,r[11]=0,r[12]=t.x+C-(w*C+E*T+F*S),r[13]=t.y+T-(R*C+B*T+A*S),r[14]=t.z+S-(M*C+D*T+L*S),r[15]=1,r},Curtains.prototype._applyMatrixToPoint=function(t,e){var i=[],s=t[0],r=t[1],a=t[2];i[0]=e[0]*s+e[4]*r+e[8]*a+e[12],i[1]=e[1]*s+e[5]*r+e[9]*a+e[13],i[2]=e[2]*s+e[6]*r+e[10]*a+e[14];var n=e[3]*s+e[7]*r+e[11]*a+e[15];return n=n||1,i[0]/=n,i[1]/=n,i[2]/=n,i},Curtains.prototype._readyToDraw=function(){this.container.appendChild(this.glCanvas),this._setBlendFunc(),this._setDepth(!0),this._animationFrameID=null,this._autoRender&&this._animate()},Curtains.prototype._animate=function(){this.render(),this._animationFrameID=window.requestAnimationFrame(this._animate.bind(this))},Curtains.prototype._drawPlaneStack=function(t){for(var e=0;e<this._drawStacks[t].order.length;e++)for(var i=this._drawStacks[t].order[e],s=this._drawStacks[t].programs["program-"+i],r=0;r<s.length;r++){var a=this.planes[s[r]];a&&a._drawPlane()}},Curtains.prototype.render=function(){if(this._drawingEnabled||this._forceRender){this._forceRender&&(this._forceRender=!1),this._onRenderCallback&&this._onRenderCallback(),this._clear(),this._drawStacks.scenePasses.length>0&&0===this._drawStacks.renderPasses.length&&(this._glState.scenePassIndex=0,this._bindFrameBuffer(this.shaderPasses[this._drawStacks.scenePasses[0]].target)),this._drawPlaneStack("opaque"),this._drawStacks.transparent.length&&(this.gl.clearDepth(1),this.gl.clear(this.gl.DEPTH_BUFFER_BIT),this._drawPlaneStack("transparent")),this._drawStacks.scenePasses.length>0&&this._drawStacks.renderPasses.length>0&&(this._glState.scenePassIndex=0,this._bindFrameBuffer(this.shaderPasses[this._drawStacks.scenePasses[0]].target));for(var t=0;t<this._drawStacks.renderPasses.length;t++){this.shaderPasses[this._drawStacks.renderPasses[t]]._drawPlane()}if(this._drawStacks.scenePasses.length>0)for(t=0;t<this._drawStacks.scenePasses.length;t++){this.shaderPasses[this._drawStacks.scenePasses[t]]._drawPlane()}}},Curtains.prototype.onAfterResize=function(t){return t&&(this._onAfterResizeCallback=t),this},Curtains.prototype.onError=function(t){return t&&(this._onErrorCallback=t),this},Curtains.prototype.onContextLost=function(t){return t&&(this._onContextLostCallback=t),this},Curtains.prototype.onContextRestored=function(t){return t&&(this._onContextRestoredCallback=t),this},Curtains.prototype.onRender=function(t){return t&&(this._onRenderCallback=t),this},Curtains.prototype.onScroll=function(t){return t&&(this._onScrollCallback=t),this},Curtains.BasePlane=function(t,e,i){this._type=this._type||"BasicPlane",this._curtains=t,this.htmlElement=e,this.uuid=this._curtains._generateUUID(),this._initBasePlane(i)},Curtains.BasePlane.prototype._initBasePlane=function(t){if(t||(t={}),this._canDraw=!1,this.shareProgram=t.shareProgram||!1,this._updatePerspectiveMatrix=!1,this._updateMVMatrix=!1,this._definition={width:parseInt(t.widthSegments)||1,height:parseInt(t.heightSegments)||1},this._definition.buffersID="ShaderPass"===this._type?1:this._definition.width*this._definition.height+this._definition.width,this._depthTest=t.depthTest,null!==this._depthTest&&void 0!==this._depthTest||(this._depthTest=!0),this.cullFace=t.cullFace,"back"!==this.cullFace&&"front"!==this.cullFace&&"none"!==this.cullFace&&(this.cullFace="back"),this._activeTextures=[],t.uniforms||(t.uniforms={}),this.uniforms={},t.uniforms)for(var e in t.uniforms){var i=t.uniforms[e];this.uniforms[e]={name:i.name,type:i.type,value:i.value,lastValue:i.value}}var s=this._setupShaders(t);return this._usedProgram=this._curtains._setupProgram(s.vertexShaderCode,s.fragmentShaderCode,this),this._loadingManager={sourcesLoaded:0,initSourcesToLoad:0,complete:!1},this.images=[],this.videos=[],this.canvases=[],this.textures=[],this.crossOrigin=t.crossOrigin||"anonymous",this.userData={},!!this._usedProgram&&(this._shouldDraw=!0,this.visible=!0,this._setAttributes(),this._setDocumentSizes(),this._setUniforms(),this._initializeBuffers(),this._canDraw=!0,this)},Curtains.BasePlane.prototype._getDefaultVS=function(){return this._curtains.productionMode||console.warn("No vertex shader provided, will use a default one"),"precision mediump float;\nattribute vec3 aVertexPosition;attribute vec2 aTextureCoord;uniform mat4 uMVMatrix;uniform mat4 uPMatrix;varying vec3 vVertexPosition;varying vec2 vTextureCoord;void main() {vTextureCoord = aTextureCoord;vVertexPosition = aVertexPosition;gl_Position = uPMatrix * uMVMatrix * vec4(aVertexPosition, 1.0);}"},Curtains.BasePlane.prototype._getDefaultFS=function(){return"precision mediump float;\nvarying vec3 vVertexPosition;varying vec2 vTextureCoord;void main( void ) {gl_FragColor = vec4(0.0, 0.0, 0.0, 1.0);}"},Curtains.BasePlane.prototype._setupShaders=function(t){var e,i,s=t.vertexShaderID||this.htmlElement.getAttribute("data-vs-id"),r=t.fragmentShaderID||this.htmlElement.getAttribute("data-fs-id");return t.vertexShader||(e=s&&document.getElementById(s)?document.getElementById(s).innerHTML:this._getDefaultVS()),t.fragmentShader||(r&&document.getElementById(r)?i=document.getElementById(r).innerHTML:(this._curtains.productionMode||console.warn("No fragment shader provided, will use a default one"),i=this._getDefaultFS())),{vertexShaderCode:t.vertexShader||e,fragmentShaderCode:t.fragmentShader||i}},Curtains.BasePlane.prototype._handleUniformSetting=function(t,e,i){var s=this._curtains.gl;switch(t){case"1i":s.uniform1i(e,i);break;case"1iv":s.uniform1iv(e,i);break;case"1f":s.uniform1f(e,i);break;case"1fv":s.uniform1fv(e,i);break;case"2i":s.uniform2i(e,i[0],i[1]);break;case"2iv":s.uniform2iv(e,i);break;case"2f":s.uniform2f(e,i[0],i[1]);break;case"2fv":s.uniform2fv(e,i);break;case"3i":s.uniform3i(e,i[0],i[1],i[2]);break;case"3iv":s.uniform3iv(e,i);break;case"3f":s.uniform3f(e,i[0],i[1],i[2]);break;case"3fv":s.uniform3fv(e,i);break;case"4i":s.uniform4i(e,i[0],i[1],i[2],i[3]);break;case"4iv":s.uniform4iv(e,i);break;case"4f":s.uniform4f(e,i[0],i[1],i[2],i[3]);break;case"4fv":s.uniform4fv(e,i);break;case"mat2":s.uniformMatrix2fv(e,!1,i);break;case"mat3":s.uniformMatrix3fv(e,!1,i);break;case"mat4":s.uniformMatrix4fv(e,!1,i);break;default:this._curtains.productionMode||console.warn("This uniform type is not handled : ",t)}},Curtains.BasePlane.prototype._setUniforms=function(){var t=this._curtains,e=t.gl;t._useProgram(this._usedProgram);for(var i=e.getProgramParameter(this._usedProgram.program,e.ACTIVE_UNIFORMS),s=0;s<i;s++){var r=e.getActiveUniform(this._usedProgram.program,s);r.type===e.SAMPLER_2D&&this._activeTextures.push(r)}if(this.uniforms)for(var a in this.uniforms){var n=this.uniforms[a];n.location=e.getUniformLocation(this._usedProgram.program,n.name),n.type||(Array.isArray(n.value)?4===n.value.length?(n.type="4f",t.productionMode||console.warn("No uniform type declared for "+n.name+", applied a 4f (array of 4 floats) uniform type")):3===n.value.length?(n.type="3f",t.productionMode||console.warn("No uniform type declared for "+n.name+", applied a 3f (array of 3 floats) uniform type")):2===n.value.length&&(n.type="2f",t.productionMode||console.warn("No uniform type declared for "+n.name+", applied a 2f (array of 2 floats) uniform type")):n.value.constructor===Float32Array?16===n.value.length?(n.type="mat4",t.productionMode||console.warn("No uniform type declared for "+n.name+", applied a mat4 (4x4 matrix array) uniform type")):9===n.value.length?(n.type="mat3",t.productionMode||console.warn("No uniform type declared for "+n.name+", applied a mat3 (3x3 matrix array) uniform type")):4===n.value.length&&(n.type="mat2",t.productionMode||console.warn("No uniform type declared for "+n.name+", applied a mat2 (2x2 matrix array) uniform type")):(n.type="1f",t.productionMode||console.warn("No uniform type declared for "+n.name+", applied a 1f (float) uniform type"))),this._handleUniformSetting(n.type,n.location,n.value)}},Curtains.BasePlane.prototype._updateUniforms=function(){if(this.uniforms)for(var t in this.uniforms){var e=this.uniforms[t];this.shareProgram?this._handleUniformSetting(e.type,e.location,e.value):(e.value.length||e.value===e.lastValue?JSON.stringify(e.value)!==JSON.stringify(e.lastValue)&&this._handleUniformSetting(e.type,e.location,e.value):this._handleUniformSetting(e.type,e.location,e.value),e.lastValue=e.value.length?Array.from(e.value):e.value)}},Curtains.BasePlane.prototype._setAttributes=function(){this._attributes||(this._attributes={}),this._attributes.vertexPosition={name:"aVertexPosition",location:this._curtains.gl.getAttribLocation(this._usedProgram.program,"aVertexPosition")},this._attributes.textureCoord={name:"aTextureCoord",location:this._curtains.gl.getAttribLocation(this._usedProgram.program,"aTextureCoord")}},Curtains.BasePlane.prototype._setPlaneVertices=function(){this._geometry={vertices:[]},this._material={uvs:[]};for(var t=0;t<this._definition.height;++t)for(var e=t/this._definition.height,i=0;i<this._definition.width;++i){var s=i/this._definition.width;this._material.uvs.push(s),this._material.uvs.push(e),this._material.uvs.push(0),this._geometry.vertices.push(2*(s-.5)),this._geometry.vertices.push(2*(e-.5)),this._geometry.vertices.push(0),this._material.uvs.push(s+1/this._definition.width),this._material.uvs.push(e),this._material.uvs.push(0),this._geometry.vertices.push(2*(s+1/this._definition.width-.5)),this._geometry.vertices.push(2*(e-.5)),this._geometry.vertices.push(0),this._material.uvs.push(s),this._material.uvs.push(e+1/this._definition.height),this._material.uvs.push(0),this._geometry.vertices.push(2*(s-.5)),this._geometry.vertices.push(2*(e+1/this._definition.height-.5)),this._geometry.vertices.push(0),this._material.uvs.push(s),this._material.uvs.push(e+1/this._definition.height),this._material.uvs.push(0),this._geometry.vertices.push(2*(s-.5)),this._geometry.vertices.push(2*(e+1/this._definition.height-.5)),this._geometry.vertices.push(0),this._material.uvs.push(s+1/this._definition.width),this._material.uvs.push(e),this._material.uvs.push(0),this._geometry.vertices.push(2*(s+1/this._definition.width-.5)),this._geometry.vertices.push(2*(e-.5)),this._geometry.vertices.push(0),this._material.uvs.push(s+1/this._definition.width),this._material.uvs.push(e+1/this._definition.height),this._material.uvs.push(0),this._geometry.vertices.push(2*(s+1/this._definition.width-.5)),this._geometry.vertices.push(2*(e+1/this._definition.height-.5)),this._geometry.vertices.push(0)}},Curtains.BasePlane.prototype._initializeBuffers=function(){var t=this._curtains.gl;this._geometry||this._material||this._setPlaneVertices(),this._attributes&&(this._geometry.bufferInfos={id:t.createBuffer(),itemSize:3,numberOfItems:this._geometry.vertices.length/3},this._material.bufferInfos={id:t.createBuffer(),itemSize:3,numberOfItems:this._material.uvs.length/3},this._curtains._isWebGL2?(this._vao=t.createVertexArray(),t.bindVertexArray(this._vao)):this._curtains._extensions.OES_vertex_array_object&&(this._vao=this._curtains._extensions.OES_vertex_array_object.createVertexArrayOES(),this._curtains._extensions.OES_vertex_array_object.bindVertexArrayOES(this._vao)),t.enableVertexAttribArray(this._attributes.vertexPosition.location),t.bindBuffer(t.ARRAY_BUFFER,this._geometry.bufferInfos.id),t.bufferData(t.ARRAY_BUFFER,new Float32Array(this._geometry.vertices),t.STATIC_DRAW),t.vertexAttribPointer(this._attributes.vertexPosition.location,this._geometry.bufferInfos.itemSize,t.FLOAT,!1,0,0),t.enableVertexAttribArray(this._attributes.textureCoord.location),t.bindBuffer(t.ARRAY_BUFFER,this._material.bufferInfos.id),t.bufferData(t.ARRAY_BUFFER,new Float32Array(this._material.uvs),t.STATIC_DRAW),t.vertexAttribPointer(this._attributes.textureCoord.location,this._material.bufferInfos.itemSize,t.FLOAT,!1,0,0),this._curtains._glState.currentBuffersID=this._definition.buffersID)},Curtains.BasePlane.prototype._restoreContext=function(){var t=this._curtains;if(this._canDraw=!1,this._matrices&&(this._matrices=null),this._attributes=null,this._geometry.bufferInfos=null,this._material.bufferInfos=null,this._usedProgram=t._setupProgram(this._usedProgram.vsCode,this._usedProgram.fsCode,this),this._usedProgram){if(this._setAttributes(),this._activeTextures=[],this._setUniforms(),this._initializeBuffers(),"ShaderPass"===this._type)if(this._isScenePass)this.target._frameBuffer=null,this.target._depthBuffer=null,t.renderTargets.splice(this.target.index,1),this.textures.splice(0,1),this._createFrameBuffer(),t._drawStacks.scenePasses.push(this.index);else{var e=t.renderTargets[this.target.index];this.setRenderTarget(e),this.target._shaderPass=e,this.textures[0]._canDraw=!1,this.textures[0]._setTextureUniforms(),this.textures[0].setFromTexture(e.textures[0]),t._drawStacks.renderPasses.push(this.index)}else this.target&&this.setRenderTarget(t.renderTargets[this.target.index]);for(var i="ShaderPass"===this._type?1:0;i<this.textures.length;i++)this.textures[i]._restoreContext();"Plane"===this._type&&(this._initMatrices(),this.setPerspective(this._fov,this._nearPlane,this._farPlane),this._applyWorldPositions(),t._stackPlane(this)),this._canDraw=!0}},Curtains.BasePlane.prototype._setDocumentSizes=function(){var t=this.htmlElement.getBoundingClientRect();0===t.width&&0===t.height&&(t=this._curtains._boundingRect),this._boundingRect||(this._boundingRect={}),this._boundingRect.document={width:t.width*this._curtains.pixelRatio,height:t.height*this._curtains.pixelRatio,top:t.top*this._curtains.pixelRatio,left:t.left*this._curtains.pixelRatio}},Curtains.BasePlane.prototype.getBoundingRect=function(){return{width:this._boundingRect.document.width,height:this._boundingRect.document.height,top:this._boundingRect.document.top,left:this._boundingRect.document.left,right:this._boundingRect.document.left+this._boundingRect.document.width,bottom:this._boundingRect.document.top+this._boundingRect.document.height}},Curtains.BasePlane.prototype._getNearPlaneIntersections=function(t,e,i){function s(t,e){for(var i=[e[0]-t[0],e[1]-t[1],e[2]-t[2]],s=t.slice();s[2]>-1;)s[0]+=i[0],s[1]+=i[1],s[2]+=i[2];return s}if(1===i.length)0===i[0]?(e[0]=s(e[1],this._curtains._applyMatrixToPoint([.95,1,0],this._matrices.mVPMatrix)),e.push(s(e[3],this._curtains._applyMatrixToPoint([-1,-.95,0],this._matrices.mVPMatrix)))):1===i[0]?(e[1]=s(e[0],this._curtains._applyMatrixToPoint([-.95,1,0],this._matrices.mVPMatrix)),e.push(s(e[2],this._curtains._applyMatrixToPoint([1,-.95,0],this._matrices.mVPMatrix)))):2===i[0]?(e[2]=s(e[3],this._curtains._applyMatrixToPoint([-.95,-1,0],this._matrices.mVPMatrix)),e.push(s(e[1],this._curtains._applyMatrixToPoint([1,.95,0],this._matrices.mVPMatrix)))):3===i[0]&&(e[3]=s(e[2],this._curtains._applyMatrixToPoint([.95,-1,0],this._matrices.mVPMatrix)),e.push(s(e[0],this._curtains._applyMatrixToPoint([-1,.95,0],this._matrices.mVPMatrix))));else if(2===i.length)0===i[0]&&1===i[1]?(e[0]=s(e[3],this._curtains._applyMatrixToPoint([-1,-.95,0],this._matrices.mVPMatrix)),e[1]=s(e[2],this._curtains._applyMatrixToPoint([1,-.95,0],this._matrices.mVPMatrix))):1===i[0]&&2===i[1]?(e[1]=s(e[0],this._curtains._applyMatrixToPoint([-.95,1,0],this._matrices.mVPMatrix)),e[2]=s(e[3],this._curtains._applyMatrixToPoint([-.95,-1,0],this._matrices.mVPMatrix))):2===i[0]&&3===i[1]?(e[2]=s(e[1],this._curtains._applyMatrixToPoint([1,.95,0],this._matrices.mVPMatrix)),e[3]=s(e[0],this._curtains._applyMatrixToPoint([-1,.95,0],this._matrices.mVPMatrix))):0===i[0]&&3===i[1]&&(e[0]=s(e[1],this._curtains._applyMatrixToPoint([.95,1,0],this._matrices.mVPMatrix)),e[3]=s(e[2],this._curtains._applyMatrixToPoint([.95,-1,0],this._matrices.mVPMatrix)));else if(3===i.length){for(var r=0,a=0;a<t.length;a++)i.includes(a)||(r=a);e=[e[r]],0===r?(e.push(s(e[0],this._curtains._applyMatrixToPoint([-.95,1,0],this._matrices.mVPMatrix))),e.push(s(e[0],this._curtains._applyMatrixToPoint([-1,.95,0],this._matrices.mVPMatrix)))):1===r?(e.push(s(e[0],this._curtains._applyMatrixToPoint([.95,1,0],this._matrices.mVPMatrix))),e.push(s(e[0],this._curtains._applyMatrixToPoint([1,.95,0],this._matrices.mVPMatrix)))):2===r?(e.push(s(e[0],this._curtains._applyMatrixToPoint([.95,-1,0],this._matrices.mVPMatrix))),e.push(s(e[0],this._curtains._applyMatrixToPoint([1,-.95,0],this._matrices.mVPMatrix)))):3===r&&(e.push(s(e[0],this._curtains._applyMatrixToPoint([-.95,-1,0],this._matrices.mVPMatrix))),e.push(s(e[0],this._curtains._applyMatrixToPoint([-1,-.95,0],this._matrices.mVPMatrix))))}else for(a=0;a<t.length;a++)e[a][0]=1e4,e[a][1]=1e4;return e},Curtains.BasePlane.prototype._getWorldCoords=function(){for(var t=[[-1,1,0],[1,1,0],[1,-1,0],[-1,-1,0]],e=[],i=[],s=0;s<t.length;s++){var r=this._curtains._applyMatrixToPoint(t[s],this._matrices.mVPMatrix);e.push(r),Math.abs(r[2])>1&&i.push(s)}i.length&&(e=this._getNearPlaneIntersections(t,e,i));var a=1/0,n=-1/0,o=1/0,h=-1/0;for(s=0;s<e.length;s++){var u=e[s];u[0]<a&&(a=u[0]),u[0]>n&&(n=u[0]),u[1]<o&&(o=u[1]),u[1]>h&&(h=u[1])}return{top:h,right:n,bottom:o,left:a}},Curtains.BasePlane.prototype.getWebGLBoundingRect=function(){if(this._matrices.mVPMatrix){var t=this._getWorldCoords(),e={top:1-(t.top+1)/2,right:(t.right+1)/2,bottom:1-(t.bottom+1)/2,left:(t.left+1)/2};return e.width=e.right-e.left,e.height=e.bottom-e.top,{width:e.width*this._curtains._boundingRect.width,height:e.height*this._curtains._boundingRect.height,top:e.top*this._curtains._boundingRect.height+this._curtains._boundingRect.top,left:e.left*this._curtains._boundingRect.width+this._curtains._boundingRect.left,right:e.left*this._curtains._boundingRect.width+this._curtains._boundingRect.left+e.width*this._curtains._boundingRect.width,bottom:e.top*this._curtains._boundingRect.height+this._curtains._boundingRect.top+e.height*this._curtains._boundingRect.height}}return this._boundingRect.document},Curtains.BasePlane.prototype._getWebGLDrawRect=function(){var t=this.getWebGLBoundingRect();return{top:t.top-this.drawCheckMargins.top,right:t.right+this.drawCheckMargins.right,bottom:t.bottom+this.drawCheckMargins.bottom,left:t.left-this.drawCheckMargins.left}},Curtains.BasePlane.prototype.planeResize=function(){this._setDocumentSizes(),"Plane"===this._type&&(this.setPerspective(this._fov,this._nearPlane,this._farPlane),this._applyWorldPositions());for(var t=0;t<this.textures.length;t++)this.textures[t].resize();var e=this;setTimeout(function(){e._onAfterResizeCallback&&e._onAfterResizeCallback()},0)},Curtains.BasePlane.prototype.createTexture=function(t){"string"==typeof t&&(t={sampler:t},this._curtains.productionMode||console.warn("Since v5.1 you should use an object to pass your sampler name with the createTexture() method. Please refer to the docs: https://www.curtainsjs.com/documentation.html (texture concerned: ",t.sampler,")")),t||(t={});var e=new Curtains.Texture(this,{index:this.textures.length,sampler:t.sampler||null,fromTexture:t.fromTexture||null,isFBOTexture:t.isFBOTexture||!1});return this.textures.push(e),e},Curtains.BasePlane.prototype._isPlaneReady=function(){if(!this._loadingManager.complete&&this._loadingManager.sourcesLoaded>=this._loadingManager.initSourcesToLoad){this._loadingManager.complete=!0,this._curtains.needRender();var t=this;setTimeout(function(){t._onReadyCallback&&t._onReadyCallback()},0)}},Curtains.BasePlane.prototype.loadSources=function(t){for(var e=0;e<t.length;e++)this.loadSource(t[e])},Curtains.BasePlane.prototype.loadSource=function(t){"IMG"===t.tagName.toUpperCase()?this.loadImage(t):"VIDEO"===t.tagName.toUpperCase()?this.loadVideo(t):"CANVAS"===t.tagName.toUpperCase()?this.loadCanvas(t):this._curtains.productionMode||console.warn("this HTML tag could not be converted into a texture:",t.tagName)},Curtains.BasePlane.prototype._sourceLoadError=function(t,e){this._curtains.productionMode||console.warn("There has been an error:",e,"while loading this source:",t)},Curtains.BasePlane.prototype._getTextureFromCache=function(t){var e=!1;if(this._curtains._imageCache.length>0)for(var i=0;i<this._curtains._imageCache.length;i++){var s=this._curtains._imageCache[i];s.source&&"image"===s.type&&s.source.src===t.src&&(e=s)}return e},Curtains.BasePlane.prototype.loadImage=function(t){var e=t;e.crossOrigin=this.crossOrigin||"anonymous",e.sampler=t.getAttribute("data-sampler")||null;var i=this._getTextureFromCache(t);if(i)return this.createTexture({sampler:e.sampler,fromTexture:i}),this.images.push(i.source),void this._isPlaneReady();var s=this.createTexture({sampler:e.sampler});if(s._onSourceLoadedHandler=s._onSourceLoaded.bind(s,e),e.complete)s._onSourceLoaded(e);else if(e.decode){var r=this;e.decode().then(s._onSourceLoadedHandler).catch(function(){e.addEventListener("load",s._onSourceLoadedHandler,!1),e.addEventListener("error",r._sourceLoadError.bind(r,e),!1)})}else e.addEventListener("load",s._onSourceLoadedHandler,!1),e.addEventListener("error",this._sourceLoadError.bind(this,e),!1);this.images.push(e)},Curtains.BasePlane.prototype.loadVideo=function(t){var e=t;e.preload=!0,e.muted=!0,e.loop=!0,e.playsinline=!0,e.sampler=t.getAttribute("data-sampler")||null,e.crossOrigin=this.crossOrigin||"anonymous";var i=this.createTexture({sampler:e.sampler});i._onSourceLoadedHandler=i._onVideoLoadedData.bind(i,e),e.addEventListener("canplaythrough",i._onSourceLoadedHandler,!1),e.addEventListener("error",this._sourceLoadError.bind(this,e),!1),e.readyState>=e.HAVE_FUTURE_DATA&&i._onSourceLoaded(e),e.load(),this.videos.push(e)},Curtains.BasePlane.prototype.loadCanvas=function(t){var e=t;e.sampler=t.getAttribute("data-sampler")||null;var i=this.createTexture({sampler:e.sampler});this.canvases.push(e),i._onSourceLoaded(e)},Curtains.BasePlane.prototype.loadImages=function(t){for(var e=0;e<t.length;e++)this.loadImage(t[e])},Curtains.BasePlane.prototype.loadVideos=function(t){for(var e=0;e<t.length;e++)this.loadVideo(t[e])},Curtains.BasePlane.prototype.loadCanvases=function(t){for(var e=0;e<t.length;e++)this.loadCanvas(t[e])},Curtains.BasePlane.prototype.playVideos=function(){for(var t=0;t<this.textures.length;t++){var e=this.textures[t];if("video"===e.type){var i=e.source.play(),s=this;void 0!==i&&i.catch(function(t){s._curtains.productionMode||console.warn("Could not play the video : ",t)})}}},Curtains.BasePlane.prototype.mouseToPlaneCoords=function(t,e){var i=this.scale?this.scale:{x:1,y:1},s=(this._boundingRect.document.width-this._boundingRect.document.width*i.x)/2,r=(this._boundingRect.document.height-this._boundingRect.document.height*i.y)/2,a=this._boundingRect.document.width*i.x/this._curtains.pixelRatio,n=this._boundingRect.document.height*i.y/this._curtains.pixelRatio,o=(this._boundingRect.document.top+r)/this._curtains.pixelRatio;return{x:(t-(this._boundingRect.document.left+s)/this._curtains.pixelRatio)/a*2-1,y:1-(e-o)/n*2}},Curtains.BasePlane.prototype._bindPlaneBuffers=function(){var t=this._curtains,e=t.gl;this._vao?t._isWebGL2?t.gl.bindVertexArray(this._vao):t._extensions.OES_vertex_array_object.bindVertexArrayOES(this._vao):(e.enableVertexAttribArray(this._attributes.vertexPosition.location),e.bindBuffer(e.ARRAY_BUFFER,this._geometry.bufferInfos.id),e.vertexAttribPointer(this._attributes.vertexPosition.location,this._geometry.bufferInfos.itemSize,e.FLOAT,!1,0,0),e.enableVertexAttribArray(this._attributes.textureCoord.location),e.bindBuffer(e.ARRAY_BUFFER,this._material.bufferInfos.id),e.vertexAttribPointer(this._attributes.textureCoord.location,this._material.bufferInfos.itemSize,e.FLOAT,!1,0,0)),t._glState.currentBuffersID=this._definition.buffersID},Curtains.BasePlane.prototype._bindPlaneTexture=function(t){var e=this._curtains.gl;t._canDraw&&(e.activeTexture(e.TEXTURE0+t.index),e.bindTexture(e.TEXTURE_2D,t._sampler.texture))},Curtains.BasePlane.prototype.setRenderTarget=function(t){t&&t._type&&"RenderTarget"===t._type?this.target=t:this._curtains.productionMode||console.warn("Could not set the render target because the argument passed is not a RenderTarget class object",t)},Curtains.BasePlane.prototype._drawPlane=function(){var t=this._curtains,e=t.gl;if(this._canDraw&&(this._onRenderCallback&&this._onRenderCallback(),"ShaderPass"===this._type?this._isScenePass?t._glState.scenePassIndex+1<t._drawStacks.scenePasses.length?(t._bindFrameBuffer(t.shaderPasses[t._drawStacks.scenePasses[t._glState.scenePassIndex+1]].target),t._glState.scenePassIndex++):t._bindFrameBuffer(null):null===t._glState.scenePassIndex&&t._bindFrameBuffer(null):(this.target?t._bindFrameBuffer(this.target):null===t._glState.scenePassIndex&&t._bindFrameBuffer(null),this._setPerspectiveMatrix(),this._setMVMatrix()),(this.alwaysDraw||this._shouldDraw)&&this.visible)){t._setDepth(this._depthTest),t._setFaceCulling(this.cullFace),t._useProgram(this._usedProgram),this._updateUniforms(),t._glState.currentBuffersID!==this._definition.buffersID&&this._bindPlaneBuffers();for(var i=0;i<this.textures.length;i++)this.textures[i]._drawTexture();e.drawArrays(e.TRIANGLES,0,this._geometry.bufferInfos.numberOfItems),this._onAfterRenderCallback&&this._onAfterRenderCallback()}},Curtains.BasePlane.prototype._dispose=function(){var t=this._curtains.gl;if(t){this._vao&&(this._curtains._isWebGL2?t.deleteVertexArray(this._vao):this._curtains._extensions.OES_vertex_array_object.deleteVertexArrayOES(this._vao)),this._geometry&&(t.bindBuffer(t.ARRAY_BUFFER,this._geometry.bufferInfos.id),t.bufferData(t.ARRAY_BUFFER,1,t.STATIC_DRAW),t.deleteBuffer(this._geometry.bufferInfos.id),this._geometry=null),this._material&&(t.bindBuffer(t.ARRAY_BUFFER,this._material.bufferInfos.id),t.bufferData(t.ARRAY_BUFFER,1,t.STATIC_DRAW),t.deleteBuffer(this._material.bufferInfos.id),this._material=null),this.target&&"ShaderPass"===this._type&&(this._curtains.removeRenderTarget(this.target),this.textures.shift());for(var e=0;e<this.textures.length;e++)this.textures[e]._dispose();this.textures=null}},Curtains.BasePlane.prototype.onAfterResize=function(t){return t&&(this._onAfterResizeCallback=t),this},Curtains.BasePlane.prototype.onLoading=function(t){return t&&(this._onPlaneLoadingCallback=t),this},Curtains.BasePlane.prototype.onReady=function(t){return t&&(this._onReadyCallback=t),this},Curtains.BasePlane.prototype.onRender=function(t){return t&&(this._onRenderCallback=t),this},Curtains.BasePlane.prototype.onAfterRender=function(t){return t&&(this._onAfterRenderCallback=t),this},Curtains.Plane=function(t,e,i){this._type="Plane",Curtains.BasePlane.call(this,t,e,i),this.index=this._curtains.planes.length,this._canDraw=!1,this.target=null,i||(i={}),this._setInitParams(i),this._usedProgram?(this._curtains._stackPlane(this),this._initPositions(),this._initSources()):this._curtains._onErrorCallback&&this._curtains._onErrorCallback()},Curtains.Plane.prototype=Object.create(Curtains.BasePlane.prototype),Curtains.Plane.prototype.constructor=Curtains.Plane,Curtains.Plane.prototype._setInitParams=function(t){this.alwaysDraw=t.alwaysDraw||!1,this._transparent=t.transparent||!1;var e={top:0,right:0,bottom:0,left:0};t.drawCheckMargins&&(e=t.drawCheckMargins),this.drawCheckMargins=e,this._initTransformValues(),this.autoloadSources=t.autoloadSources,null!==this.autoloadSources&&void 0!==this.autoloadSources||(this.autoloadSources=!0),this._fov=t.fov||50,this._nearPlane=.1,this._farPlane=150,null===t.watchScroll||void 0===t.watchScroll?this.watchScroll=this._curtains._watchScroll:this.watchScroll=t.watchScroll||!1,this.watchScroll&&(this._curtains._scrollManager.shouldWatch=!0)},Curtains.Plane.prototype._initTransformValues=function(){this.rotation={x:0,y:0,z:0},this.quaternion=new Float32Array([0,0,0,1]),this.relativeTranslation={x:0,y:0,z:0},this._translation={x:0,y:0,z:0},this.scale={x:1,y:1},this.transformOrigin={x:.5,y:.5,z:0}},Curtains.Plane.prototype._initPositions=function(){this._initMatrices(),this.setPerspective(this._fov,this._nearPlane,this._farPlane),this._applyWorldPositions()},Curtains.Plane.prototype._initSources=function(){if(this.autoloadSources){for(var t=[],e=0;e<this.htmlElement.getElementsByTagName("img").length;e++)t.push(this.htmlElement.getElementsByTagName("img")[e]);t.length>0&&this.loadSources(t);var i=[];for(e=0;e<this.htmlElement.getElementsByTagName("video").length;e++)i.push(this.htmlElement.getElementsByTagName("video")[e]);i.length>0&&this.loadSources(i);var s=[];for(e=0;e<this.htmlElement.getElementsByTagName("canvas").length;e++)s.push(this.htmlElement.getElementsByTagName("canvas")[e]);s.length>0&&this.loadSources(s),this._loadingManager.initSourcesToLoad=t.length+i.length+s.length}0===this._loadingManager.initSourcesToLoad&&(this._isPlaneReady(),this._curtains.productionMode||console.warn("This plane does not contain any image, video or canvas element. You may want to add some later with the loadSource() or loadSources() method.")),this._canDraw=!0,this._curtains.needRender(),this.alwaysDraw||this._shouldDrawCheck()},Curtains.Plane.prototype._initMatrices=function(){var t=this._curtains.gl;this._matrices={mvMatrix:{name:"uMVMatrix",matrix:new Float32Array([1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1]),location:t.getUniformLocation(this._usedProgram.program,"uMVMatrix")},pMatrix:{name:"uPMatrix",matrix:new Float32Array([1,0,0,0,0,1,0,0,0,0,1,0,0,0,0,1]),location:t.getUniformLocation(this._usedProgram.program,"uPMatrix")}}},Curtains.Plane.prototype.resetPlane=function(t){this._initTransformValues(),null!==t&&t?(this.htmlElement=t,this.updatePosition()):t||this._curtains.productionMode||console.warn("You are trying to reset a plane with a HTML element that does not exist. The old HTML element will be kept instead.")},Curtains.Plane.prototype._setWorldSizes=function(){var t=this._curtains,e=this._boundingRect.document.width/2+this._boundingRect.document.left,i=this._boundingRect.document.height/2+this._boundingRect.document.top,s=t._boundingRect.width/2+t._boundingRect.left,r=t._boundingRect.height/2+t._boundingRect.top;this._boundingRect.world={width:this._boundingRect.document.width/t._boundingRect.width,height:this._boundingRect.document.height/t._boundingRect.height,top:(r-i)/t._boundingRect.height,left:(e-s)/t._boundingRect.height},this._boundingRect.world.scale={x:this._curtains._boundingRect.width/this._curtains._boundingRect.height*this._boundingRect.world.width/2,y:this._boundingRect.world.height/2}},Curtains.Plane.prototype._setPerspectiveMatrix=function(){if(this._updatePerspectiveMatrix){var t=this._curtains._boundingRect.width/this._curtains._boundingRect.height,e=this._nearPlane*Math.tan(Math.PI/180*.5*this._fov),i=2*e,s=t*i,r=-.5*s,a=r+s,n=e-i,o=2*this._nearPlane/(a-r),h=2*this._nearPlane/(e-n),u=(a+r)/(a-r),l=(e+n)/(e-n),_=-(this._farPlane+this._nearPlane)/(this._farPlane-this._nearPlane),c=-2*this._farPlane*this._nearPlane/(this._farPlane-this._nearPlane);this._matrices.pMatrix.matrix=new Float32Array([o,0,0,0,0,h,0,0,u,l,_,-1,0,0,c,0])}(this.shareProgram||!this.shareProgram&&this._updatePerspectiveMatrix)&&(this._curtains._useProgram(this._usedProgram),this._curtains.gl.uniformMatrix4fv(this._matrices.pMatrix.location,!1,this._matrices.pMatrix.matrix)),this._updatePerspectiveMatrix=!1},Curtains.Plane.prototype.setPerspective=function(t,e,i){var s=isNaN(t)?this._fov:parseFloat(t);(s=Math.max(1,Math.min(s,179)))!==this._fov&&(this._fov=s),this._cameraZPosition=2*Math.tan(Math.PI/180*.5*this._fov),this._CSSPerspective=Math.pow(Math.pow(this._curtains._boundingRect.width/(2*this._curtains.pixelRatio),2)+Math.pow(this._curtains._boundingRect.height/(2*this._curtains.pixelRatio),2),.5)/Math.tan(this._fov/2*Math.PI/180),this._nearPlane=isNaN(e)?this._nearPlane:parseFloat(e),this._nearPlane=Math.max(this._nearPlane,.01),this._farPlane=isNaN(i)?this._farPlane:parseFloat(i),this._farPlane=Math.max(this._farPlane,50),this._updatePerspectiveMatrix=!0,this._updateMVMatrix=!0},Curtains.Plane.prototype._setMVMatrix=function(){if(this._updateMVMatrix){this._translation.z=this.relativeTranslation.z/this._CSSPerspective;var t={x:this._translation.x,y:this._translation.y,z:-(1-this._translation.z)/this._cameraZPosition},e={x:2*this.transformOrigin.x-1,y:-(2*this.transformOrigin.y-1)},i={x:e.x*this._boundingRect.world.scale.x,y:e.y*this._boundingRect.world.scale.y,z:this.transformOrigin.z},s=this._curtains._composeMatrixFromOrigin(t,this.quaternion,this.scale,i),r=new Float32Array([this._boundingRect.world.scale.x,0,0,0,0,this._boundingRect.world.scale.y,0,0,0,0,1,0,0,0,0,1]);this._matrices.mvMatrix.matrix=this._curtains._multiplyMatrix(s,r),this._matrices.mVPMatrix=this._curtains._multiplyMatrix(this._matrices.pMatrix.matrix,this._matrices.mvMatrix.matrix),this.alwaysDraw||this._shouldDrawCheck()}(this.shareProgram||!this.shareProgram&&this._updateMVMatrix)&&(this._curtains._useProgram(this._usedProgram),this._curtains.gl.uniformMatrix4fv(this._matrices.mvMatrix.location,!1,this._matrices.mvMatrix.matrix)),this._updateMVMatrix=!1},Curtains.Plane.prototype.setScale=function(t,e){if(t=isNaN(t)?this.scale.x:parseFloat(t),e=isNaN(e)?this.scale.y:parseFloat(e),t=Math.max(t,.001),e=Math.max(e,.001),t!==this.scale.x||e!==this.scale.y){this.scale={x:t,y:e};for(var i=0;i<this.textures.length;i++)this.textures[i].resize();this._updateMVMatrix=!0}},Curtains.Plane.prototype.setRotation=function(t,e,i){t=isNaN(t)?this.rotation.x:parseFloat(t),e=isNaN(e)?this.rotation.y:parseFloat(e),i=isNaN(i)?this.rotation.z:parseFloat(i),t===this.rotation.x&&e===this.rotation.y&&i===this.rotation.z||(this.rotation={x:t,y:e,z:i},this._setQuaternion(),this._updateMVMatrix=!0)},Curtains.Plane.prototype._setQuaternion=function(){var t=.5*this.rotation.x,e=.5*this.rotation.y,i=.5*this.rotation.z,s=Math.sin(t),r=Math.cos(t),a=Math.sin(e),n=Math.cos(e),o=Math.sin(i),h=Math.cos(i);this.quaternion[0]=s*n*h+r*a*o,this.quaternion[1]=r*a*h-s*n*o,this.quaternion[2]=r*n*o+s*a*h,this.quaternion[3]=r*n*h-s*a*o},Curtains.Plane.prototype.setTransformOrigin=function(t,e,i){t=isNaN(t)?this.transformOrigin.x:parseFloat(t),e=isNaN(e)?this.transformOrigin.y:parseFloat(e),i=isNaN(i)?this.transformOrigin.z:parseFloat(i),t===this.transformOrigin.x&&e===this.transformOrigin.y&&i===this.transformOrigin.z||(this.transformOrigin={x:t,y:e,z:i},this._updateMVMatrix=!0)},Curtains.Plane.prototype._setTranslation=function(){var t={x:0,y:0,z:0};0===this.relativeTranslation.x&&0===this.relativeTranslation.y&&0===this.relativeTranslation.z||(t=this._documentToLocalSpace(this.relativeTranslation.x,this.relativeTranslation.y)),this._translation.x=this._boundingRect.world.left+t.x,this._translation.y=this._boundingRect.world.top+t.y,this._updateMVMatrix=!0},Curtains.Plane.prototype.setRelativePosition=function(t,e,i){t=isNaN(t)?this.relativeTranslation.x:parseFloat(t),e=isNaN(e)?this.relativeTranslation.y:parseFloat(e),i=isNaN(i)?this.relativeTranslation.z:parseFloat(i),t===this.relativeTranslation.x&&e===this.relativeTranslation.y&&i===this.relativeTranslation.z||(this.relativeTranslation={x:t,y:e,z:i},this._setTranslation())},Curtains.Plane.prototype._documentToLocalSpace=function(t,e){return{x:t/(this._curtains._boundingRect.width/this._curtains.pixelRatio)*(this._curtains._boundingRect.width/this._curtains._boundingRect.height),y:-e/(this._curtains._boundingRect.height/this._curtains.pixelRatio)}},Curtains.Plane.prototype._shouldDrawCheck=function(){var t=this._getWebGLDrawRect(),e=this;Math.round(t.right)<=this._curtains._boundingRect.left||Math.round(t.left)>=this._curtains._boundingRect.left+this._curtains._boundingRect.width||Math.round(t.bottom)<=this._curtains._boundingRect.top||Math.round(t.top)>=this._curtains._boundingRect.top+this._curtains._boundingRect.height?this._shouldDraw&&(this._shouldDraw=!1,setTimeout(function(){e._onLeaveViewCallback&&e._onLeaveViewCallback()},0)):(this._shouldDraw||setTimeout(function(){e._onReEnterViewCallback&&e._onReEnterViewCallback()},0),this._shouldDraw=!0)},Curtains.Plane.prototype.isDrawn=function(){return this._canDraw&&this.visible&&(this._shouldDraw||this.alwaysDraw)},Curtains.Plane.prototype._applyWorldPositions=function(){this._setWorldSizes(),this._setTranslation()},Curtains.Plane.prototype.updatePosition=function(){this._setDocumentSizes(),this._applyWorldPositions()},Curtains.Plane.prototype.updateScrollPosition=function(){(this._curtains._scrollManager.lastXDelta||this._curtains._scrollManager.lastYDelta)&&(this._boundingRect.document.top+=this._curtains._scrollManager.lastYDelta*this._curtains.pixelRatio,this._boundingRect.document.left+=this._curtains._scrollManager.lastXDelta*this._curtains.pixelRatio,this._applyWorldPositions())},Curtains.Plane.prototype.enableDepthTest=function(t){this._depthTest=t},Curtains.Plane.prototype.moveToFront=function(){this.enableDepthTest(!1);for(var t=this._transparent?"transparent":"opaque",e=this._curtains._drawStacks[t].programs["program-"+this._usedProgram.id],i=0;i<e.length;i++)this.index===e[i]&&e.splice(i,1);"transparent"===t?e.unshift(this.index):e.push(this.index),this._curtains._drawStacks[t].programs["program-"+this._usedProgram.id]=e;for(i=0;i<this._curtains._drawStacks[t].order.length;i++)this._curtains._drawStacks[t].order[i]===this._usedProgram.id&&this._curtains._drawStacks[t].order.splice(i,1);this._curtains._drawStacks[t].order.push(this._usedProgram.id)},Curtains.Plane.prototype.onReEnterView=function(t){return t&&(this._onReEnterViewCallback=t),this},Curtains.Plane.prototype.onLeaveView=function(t){return t&&(this._onLeaveViewCallback=t),this},Curtains.RenderTarget=function(t,e){e||(e={}),this._curtains=t,this.index=this._curtains.renderTargets.length,this._type="RenderTarget",this._shaderPass=e.shaderPass||null,this._depth=e.depth||!1,this._shouldClear=e.clear,null!==this._shouldClear&&void 0!==this._shouldClear||(this._shouldClear=!0),this._minSize={width:e.minWidth||1024*this._curtains.pixelRatio,height:e.minHeight||1024*this._curtains.pixelRatio},this.userData={},this.uuid=this._curtains._generateUUID(),this._curtains.renderTargets.push(this),this._initRenderTarget()},Curtains.RenderTarget.prototype._initRenderTarget=function(){this._setSize(),this.textures=[],this._createFrameBuffer()},Curtains.RenderTarget.prototype._setSize=function(){this._shaderPass&&this._shaderPass._isScenePass?this._size={width:this._curtains._boundingRect.width,height:this._curtains._boundingRect.height}:this._size={width:Math.max(this._minSize.width,this._curtains._boundingRect.width),height:Math.max(this._minSize.height,this._curtains._boundingRect.height)}},Curtains.RenderTarget.prototype.resize=function(){this._shaderPass&&this._shaderPass._isScenePass&&(this._setSize(),this._curtains._bindFrameBuffer(this,!0),this._depth&&this._bindDepthBuffer(),this._curtains._bindFrameBuffer(null))},Curtains.RenderTarget.prototype._bindDepthBuffer=function(){var t=this._curtains.gl;this._depthBuffer&&(t.bindRenderbuffer(t.RENDERBUFFER,this._depthBuffer),t.renderbufferStorage(t.RENDERBUFFER,t.DEPTH_COMPONENT16,this._size.width,this._size.height),t.framebufferRenderbuffer(t.FRAMEBUFFER,t.DEPTH_ATTACHMENT,t.RENDERBUFFER,this._depthBuffer))},Curtains.RenderTarget.prototype._createFBOTexture=function(){var t=this._curtains.gl;if(this.textures.length>0)this.textures[0]._canDraw=!1,this.textures[0]._init();else{var e=new Curtains.Texture(this._shaderPass?this._shaderPass:this,{index:this.textures.length,sampler:"uRenderTexture",isFBOTexture:!0});this.textures.push(e)}t.framebufferTexture2D(t.FRAMEBUFFER,t.COLOR_ATTACHMENT0,t.TEXTURE_2D,this.textures[0]._sampler.texture,0)},Curtains.RenderTarget.prototype._createFrameBuffer=function(){var t=this._curtains.gl;this._frameBuffer=t.createFramebuffer(),this._curtains._bindFrameBuffer(this,!0),this._createFBOTexture(),this._depth&&(this._depthBuffer=t.createRenderbuffer(),this._bindDepthBuffer()),this._curtains._bindFrameBuffer(null)},Curtains.RenderTarget.prototype._restoreContext=function(){this._shaderPass&&this._shaderPass._isScenePass||(this._shaderPass=null,this._createFrameBuffer())},Curtains.RenderTarget.prototype._dispose=function(){this._frameBuffer&&(this._curtains.gl.deleteFramebuffer(this._frameBuffer),this._frameBuffer=null),this._depthBuffer&&(this._curtains.gl.deleteRenderbuffer(this._depthBuffer),this._depthBuffer=null),this.textures[0]._dispose(),this.textures=[]},Curtains.ShaderPass=function(t,e){e||(e={}),e.widthSegments=1,e.heightSegments=1,this._type="ShaderPass",this._isScenePass=!0,Curtains.BasePlane.call(this,t,t.container,e),this.index=this._curtains.shaderPasses.length,this._depth=e.depth||!1,this._shouldClear=e.clear,null!==this._shouldClear&&void 0!==this._shouldClear||(this._shouldClear=!0),this.target=e.renderTarget||null,this.target&&(this._isScenePass=!1,this._shouldClear=this.target._shouldClear),this._usedProgram&&this._initShaderPassPlane()},Curtains.ShaderPass.prototype=Object.create(Curtains.BasePlane.prototype),Curtains.ShaderPass.prototype.constructor=Curtains.ShaderPass,Curtains.ShaderPass.prototype._initShaderPassPlane=function(){if(this.target){this.setRenderTarget(this.target),this.target._shaderPass=this;var t=new Curtains.Texture(this,{index:this.textures.length,sampler:"uRenderTexture",isFBOTexture:!0,fromTexture:this.target.textures[0]});this.textures.push(t)}else this._createFrameBuffer();this._isPlaneReady(),this._canDraw=!0,this._curtains.needRender()},Curtains.ShaderPass.prototype._getDefaultVS=function(t){return"precision mediump float;\nattribute vec3 aVertexPosition;attribute vec2 aTextureCoord;varying vec3 vVertexPosition;varying vec2 vTextureCoord;void main() {vTextureCoord = aTextureCoord;vVertexPosition = aVertexPosition;gl_Position = vec4(aVertexPosition, 1.0);}"},Curtains.ShaderPass.prototype._getDefaultFS=function(t){return"precision mediump float;\nvarying vec3 vVertexPosition;varying vec2 vTextureCoord;uniform sampler2D uRenderTexture;void main( void ) {gl_FragColor = texture2D(uRenderTexture, vTextureCoord);}"},Curtains.ShaderPass.prototype._createFrameBuffer=function(){var t=new Curtains.RenderTarget(this._curtains,{shaderPass:this,clear:this._shouldClear,depth:this._depth});this.setRenderTarget(t),this.textures.push(this.target.textures[0])},Curtains.Texture=function(t,e){if(this._parent=t,this._curtains=t._curtains,this.uuid=this._curtains._generateUUID(),t._usedProgram||e.isFBOTexture)return this.index=t.textures.length,this._sampler={isActive:!1,name:e.sampler||"uSampler"+this.index},this._textureMatrix={name:e.sampler?e.sampler+"Matrix":"uTextureMatrix"+this.index,matrix:null},this._willUpdate=!1,this.shouldUpdate=!1,this._forceUpdate=!1,this.scale={x:1,y:1},this.userData={},this.type=e.isFBOTexture?"fboTexture":"empty",this._canDraw=!1,e.fromTexture?(this._initFromTexture=!0,this._parent._usedProgram&&this._setTextureUniforms(),void this.setFromTexture(e.fromTexture)):(this._initFromTexture=!1,this._init(),this);this._curtains.productionMode||console.warn("Unable to create the texture because the program is not valid")},Curtains.Texture.prototype._init=function(){var t=this._curtains.gl;if(this._sampler.texture=t.createTexture(),this._internalFormat=t.RGBA,this._format=t.RGBA,this._textureType=t.UNSIGNED_BYTE,this._texParameters=!1,this._flipY=!1,t.bindTexture(t.TEXTURE_2D,this._sampler.texture),this._curtains._glState.flipY&&(this._curtains._glState.flipY=this._flipY,t.pixelStorei(t.UNPACK_FLIP_Y_WEBGL,this._flipY)),t.pixelStorei(t.UNPACK_ALIGNMENT,4),t.pixelStorei(t.UNPACK_PREMULTIPLY_ALPHA_WEBGL,!1),this._parent._usedProgram){if(this._size={width:this._parent._boundingRect.document.width,height:this._parent._boundingRect.document.height},this._setTextureUniforms(),"empty"===this.type)t.texImage2D(t.TEXTURE_2D,0,this._internalFormat,1,1,0,this._format,this._textureType,new Uint8Array([0,0,0,255])),this._sourceLoaded=!1;else if(!this.source){var e=this._getSizes();this._updateTextureMatrix(e)}}else this._size={width:this._parent._size.width||this._curtains._boundingRect.width,height:this._parent._size.height||this._curtains._boundingRect.height};"fboTexture"===this.type&&(this._curtains._isWebGL2&&this._curtains._extensions.EXT_color_buffer_float?(this._internalFormat=t.RGBA16F,this._textureType=t.HALF_FLOAT):this._curtains._extensions.OES_texture_half_float&&(this._textureType=this._curtains._extensions.OES_texture_half_float.HALF_FLOAT_OES),t.texImage2D(t.TEXTURE_2D,0,this._internalFormat,this._size.width,this._size.height,0,this._format,this._textureType,null),this._setMipmaps()),this._canDraw=!0},Curtains.Texture.prototype._setTextureUniforms=function(){for(var t=0;t<this._parent._activeTextures.length;t++)this._parent._activeTextures[t].name===this._sampler.name&&(this._sampler.isActive=!0,this._sampler.location=this._curtains.gl.getUniformLocation(this._parent._usedProgram.program,this._sampler.name),this._textureMatrix.location=this._curtains.gl.getUniformLocation(this._parent._usedProgram.program,this._textureMatrix.name),this._curtains._useProgram(this._parent._usedProgram),this._curtains.gl.uniform1i(this._sampler.location,this.index))},Curtains.Texture.prototype.setFromTexture=function(t){if(t){if(this.type=t.type,this._sampler.texture=t._sampler.texture,this.source=t.source,this._size=t._size,this._sourceLoaded=t._sourceLoaded,this._internalFormat=t._internalFormat,this._format=t._format,this._textureType=t._textureType,this._texParameters=t._texParameters,this._originalTexture=t,this._parent._usedProgram&&(!this._canDraw||!this._textureMatrix.matrix)){var e=this._getSizes();this._updateTextureMatrix(e),this._canDraw=!0}}else this._curtains.productionMode||console.warn("Unable to set the texture from texture:",t)},Curtains.Texture.prototype.setSource=function(t){if(this._parent._usedProgram){this.source=t,"empty"===this.type&&("IMG"===t.tagName.toUpperCase()?this.type="image":"VIDEO"===t.tagName.toUpperCase()?(this.type="video",this.shouldUpdate=!0):"CANVAS"===t.tagName.toUpperCase()?(this.type="canvas",this._willUpdate=!0,this.shouldUpdate=!0):this._curtains.productionMode||console.warn("this HTML tag could not be converted into a texture:",t.tagName)),this._size={width:this.source.naturalWidth||this.source.width||this.source.videoWidth,height:this.source.naturalHeight||this.source.height||this.source.videoHeight},this._sourceLoaded=!0;var e=this._curtains.gl;e.activeTexture(e.TEXTURE0+this.index),e.bindTexture(e.TEXTURE_2D,this._sampler.texture),this._curtains.premultipliedAlpha&&e.pixelStorei(e.UNPACK_PREMULTIPLY_ALPHA_WEBGL,!0),this._flipY=!0,this._curtains._glState.flipY||(this._curtains._glState.flipY=this._flipY,e.pixelStorei(e.UNPACK_FLIP_Y_WEBGL,this._flipY)),this.resize(),"image"===this.type&&(e.texImage2D(e.TEXTURE_2D,0,this._internalFormat,this._format,this._textureType,t),this._setMipmaps()),this._curtains.needRender()}else this._curtains.productionMode||console.warn("Unable to set the texture source because the program is not valid")},Curtains.Texture.prototype._setMipmaps=function(){var t=this._curtains.gl;t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_S,t.CLAMP_TO_EDGE),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_WRAP_T,t.CLAMP_TO_EDGE),this._curtains._isWebGL2&&"image"===this.type?(t.generateMipmap(t.TEXTURE_2D),t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,t.LINEAR_MIPMAP_NEAREST)):t.texParameteri(t.TEXTURE_2D,t.TEXTURE_MIN_FILTER,t.LINEAR),this._texParameters=!0},Curtains.Texture.prototype.needUpdate=function(){this._forceUpdate=!0},Curtains.Texture.prototype._update=function(){var t=this._curtains.gl;this.source?(t.texImage2D(t.TEXTURE_2D,0,this._internalFormat,this._format,this._textureType,this.source),this._texParameters||this._setMipmaps()):t.texImage2D(t.TEXTURE_2D,0,this._internalFormat,this._size.width,this._size.height,0,this._format,this._textureType,this.source)},Curtains.Texture.prototype._getSizes=function(){var t=this._parent.scale?this._parent.scale:{x:1,y:1},e=this._parent._boundingRect.document.width*t.x,i=this._parent._boundingRect.document.height*t.y,s=this._size.width,r=this._size.height,a=s/r,n=e/i,o=0,h=0;return n>a?h=Math.min(0,i-e*(1/a)):n<a&&(o=Math.min(0,e-i*a)),{parentWidth:e,parentHeight:i,sourceWidth:s,sourceHeight:r,xOffset:o,yOffset:h}},Curtains.Texture.prototype.setScale=function(t,e){t=isNaN(t)?this.scale.x:parseFloat(t),e=isNaN(e)?this.scale.y:parseFloat(e),t=Math.max(t,.001),e=Math.max(e,.001),t===this.scale.x&&e===this.scale.y||(this.scale={x:t,y:e},this.resize())},Curtains.Texture.prototype.resize=function(){if("fboTexture"===this.type){var t=this._curtains.gl;this._size={width:this._parent._boundingRect.document.width,height:this._parent._boundingRect.document.height},this._originalTexture||(t.bindTexture(t.TEXTURE_2D,this._parent.textures[0]._sampler.texture),t.texImage2D(t.TEXTURE_2D,0,this._internalFormat,this._size.width,this._size.height,0,this._format,this._textureType,this.source))}else this.source&&(this._size={width:this.source.naturalWidth||this.source.width||this.source.videoWidth,height:this.source.naturalHeight||this.source.height||this.source.videoHeight});if(this._parent._usedProgram){var e=this._getSizes();this._updateTextureMatrix(e)}},Curtains.Texture.prototype._updateTextureMatrix=function(t){var e={x:t.parentWidth/(t.parentWidth-t.xOffset),y:t.parentHeight/(t.parentHeight-t.yOffset)};e.x/=this.scale.x,e.y/=this.scale.y;var i=new Float32Array([1,0,0,0,0,1,0,0,0,0,1,0,(1-e.x)/2,(1-e.y)/2,0,1]);this._textureMatrix.matrix=this._curtains._scaleMatrix(i,e.x,e.y,1),this._curtains._useProgram(this._parent._usedProgram),this._curtains.gl.uniformMatrix4fv(this._textureMatrix.location,!1,this._textureMatrix.matrix)},Curtains.Texture.prototype._onSourceLoaded=function(t){this._parent._loadingManager.sourcesLoaded++;var e=this;if(this._sourceLoaded||setTimeout(function(){e._parent._onPlaneLoadingCallback&&e._parent._onPlaneLoadingCallback(e)},0),this.setSource(t),this._parent._isPlaneReady(),"image"===this.type){for(var i=!0,s=0;s<this._curtains._imageCache.length;s++)this._curtains._imageCache[s].source&&this._curtains._imageCache[s].source.src===t.src&&(i=!1);i&&this._curtains._imageCache.push(this)}},Curtains.Texture.prototype._onVideoLoadedData=function(t){this._sourceLoaded||this._onSourceLoaded(t)},Curtains.Texture.prototype._drawTexture=function(){this._sampler.isActive&&(this._parent._bindPlaneTexture(this),this._flipY&&!this._curtains._glState.flipY&&(this._curtains._glState.flipY=this._flipY,this._curtains.gl.pixelStorei(this._curtains.gl.UNPACK_FLIP_Y_WEBGL,this._flipY)),"video"===this.type&&this.source&&this.source.readyState>=this.source.HAVE_CURRENT_DATA&&(this._willUpdate=!0),(this._forceUpdate||this._willUpdate&&this.shouldUpdate)&&this._update(),"video"===this.type&&(this._willUpdate=!1),this._forceUpdate=!1)},Curtains.Texture.prototype._restoreFromTexture=function(){this._initFromTexture?this._setTextureUniforms():this._init(),this.setFromTexture(this._originalTexture)},Curtains.Texture.prototype._restoreContext=function(){if(this._canDraw=!1,this._sampler.isActive=!1,this._originalTexture){var t=this;if(this._originalTexture._canDraw)setTimeout(function(){t._restoreFromTexture()},0);else var e=setInterval(function(){t._originalTexture._canDraw&&(t._restoreFromTexture(),clearInterval(e))},16)}else this._init(),this.source&&("image"===this.type&&this._curtains._imageCache.push(this),this.setSource(this.source),this.needUpdate())},Curtains.Texture.prototype._dispose=function(){"video"===this.type?(this.source.removeEventListener("canplaythrough",this._onSourceLoadedHandler,!1),this.source.removeEventListener("error",this._parent._sourceLoadError,!1),this.source.pause(),this.source.removeAttribute("src"),this.source.load(),this.source=null):"canvas"===this.type?(this.source.width=this.source.width,this.source=null):"image"===this.type&&this._curtains._isDestroying&&(this.source.removeEventListener("load",this._onSourceLoadedHandler,!1),this.source.removeEventListener("error",this._parent._sourceLoadError,!1),this.source=null);var t=this._curtains.gl;t&&!this._originalTexture&&("image"!==this.type||this._curtains._isDestroying)&&(t.activeTexture(t.TEXTURE0+this.index),t.bindTexture(t.TEXTURE_2D,null),t.deleteTexture(this._sampler.texture)),this._parent._loadingManager&&this._parent._loadingManager.sourcesLoaded--};