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- var BABYLON;!function(e){var n=function(n){function t(t,r,i,o,l){n.call(this,t,r,"marbleProceduralTexture",i,o,l),this._numberOfTilesHeight=3,this._numberOfTilesWidth=3,this._amplitude=9,this._marbleColor=new e.Color3(.77,.47,.4),this._jointColor=new e.Color3(.72,.72,.72),this.updateShaderUniforms(),this.refreshRate=0}return __extends(t,n),t.prototype.updateShaderUniforms=function(){this.setFloat("numberOfTilesHeight",this._numberOfTilesHeight),this.setFloat("numberOfTilesWidth",this._numberOfTilesWidth),this.setFloat("amplitude",this._amplitude),this.setColor3("marbleColor",this._marbleColor),this.setColor3("jointColor",this._jointColor)},Object.defineProperty(t.prototype,"numberOfTilesHeight",{get:function(){return this._numberOfTilesHeight},set:function(e){this._numberOfTilesHeight=e,this.updateShaderUniforms()},enumerable:!0,configurable:!0}),Object.defineProperty(t.prototype,"numberOfTilesWidth",{get:function(){return this._numberOfTilesWidth},set:function(e){this._numberOfTilesWidth=e,this.updateShaderUniforms()},enumerable:!0,configurable:!0}),Object.defineProperty(t.prototype,"jointColor",{get:function(){return this._jointColor},set:function(e){this._jointColor=e,this.updateShaderUniforms()},enumerable:!0,configurable:!0}),Object.defineProperty(t.prototype,"marbleColor",{get:function(){return this._marbleColor},set:function(e){this._marbleColor=e,this.updateShaderUniforms()},enumerable:!0,configurable:!0}),t}(e.ProceduralTexture);e.MarbleProceduralTexture=n}(BABYLON||(BABYLON={})),BABYLON.Effect.ShadersStore.marbleProceduralTexturePixelShader="precision highp float;\n\nvarying vec2 vPosition;\nvarying vec2 vUV;\n\nuniform float numberOfTilesHeight;\nuniform float numberOfTilesWidth;\nuniform float amplitude;\nuniform vec3 brickColor;\nuniform vec3 jointColor;\n\nconst vec3 tileSize = vec3(1.1, 1.0, 1.1);\nconst vec3 tilePct = vec3(0.98, 1.0, 0.98);\n\nfloat rand(vec2 n) {\n return fract(cos(dot(n, vec2(12.9898, 4.1414))) * 43758.5453);\n}\n\nfloat noise(vec2 n) {\n const vec2 d = vec2(0.0, 1.0);\n vec2 b = floor(n), f = smoothstep(vec2(0.0), vec2(1.0), fract(n));\n return mix(mix(rand(b), rand(b + d.yx), f.x), mix(rand(b + d.xy), rand(b + d.yy), f.x), f.y);\n}\n\nfloat turbulence(vec2 P)\n{\n float val = 0.0;\n float freq = 1.0;\n for (int i = 0; i < 4; i++)\n {\n val += abs(noise(P*freq) / freq);\n freq *= 2.07;\n }\n return val;\n}\n\nfloat round(float number){\n return sign(number)*floor(abs(number) + 0.5);\n}\n\nvec3 marble_color(float x)\n{\n vec3 col;\n x = 0.5*(x + 1.);\n x = sqrt(x); \n x = sqrt(x);\n x = sqrt(x);\n col = vec3(.2 + .75*x); \n col.b *= 0.95; \n return col;\n}\n\nvoid main()\n{\n float brickW = 1.0 / numberOfTilesWidth;\n float brickH = 1.0 / numberOfTilesHeight;\n float jointWPercentage = 0.01;\n float jointHPercentage = 0.01;\n vec3 color = brickColor;\n float yi = vUV.y / brickH;\n float nyi = round(yi);\n float xi = vUV.x / brickW;\n\n if (mod(floor(yi), 2.0) == 0.0){\n xi = xi - 0.5;\n }\n\n float nxi = round(xi);\n vec2 brickvUV = vec2((xi - floor(xi)) / brickH, (yi - floor(yi)) / brickW);\n\n if (yi < nyi + jointHPercentage && yi > nyi - jointHPercentage){\n color = mix(jointColor, vec3(0.37, 0.25, 0.25), (yi - nyi) / jointHPercentage + 0.2);\n }\n else if (xi < nxi + jointWPercentage && xi > nxi - jointWPercentage){\n color = mix(jointColor, vec3(0.44, 0.44, 0.44), (xi - nxi) / jointWPercentage + 0.2);\n }\n else {\n float t = 6.28 * brickvUV.x / (tileSize.x + noise(vec2(vUV)*6.0));\n t += amplitude * turbulence(brickvUV.xy);\n t = sin(t);\n color = marble_color(t);\n }\n\n gl_FragColor = vec4(color, 0.0);\n}";
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