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omair saleh
1 line
22 KiB
JavaScript
Vendored
1 line
22 KiB
JavaScript
Vendored
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t,n,i;t=this.renderer.domElement.getBoundingClientRect(),n=this.mouseX=e.clientX-t.left,i=this.mouseY=e.clientY-t.top,n>=0&&i>=0&&!this.options.mouseEase&&this.triggerMouseMove(n,i)}triggerMouseMove(e,t){this.uniforms&&(this.uniforms.u_mouse.value.x=e/this.scale,this.uniforms.u_mouse.value.y=t/this.scale);const n=e/this.width,i=t/this.height;"function"==typeof this.onMouseMove&&this.onMouseMove(n,i)}setSize(){this.scale||(this.scale=1),Object(i.d)()&&this.options.scaleMobile?this.scale=this.options.scaleMobile:this.options.scale&&(this.scale=this.options.scale),this.width=this.el.offsetWidth||window.innerWidth,this.height=this.el.offsetHeight||window.innerHeight}resize(){var e,t;this.setSize(),null!=(e=this.camera)&&(e.aspect=this.width/this.height),null!=(t=this.camera)&&"function"==typeof t.updateProjectionMatrix&&t.updateProjectionMatrix(),this.renderer&&(this.renderer.setSize(this.width,this.height),this.renderer.setPixelRatio(window.devicePixelRatio/this.scale)),"function"==typeof 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this.onUpdate&&this.onUpdate(),this.scene&&this.camera&&(this.renderer.render(this.scene,this.camera),"transparent"==this.options.backgroundColor?this.renderer.setClearColor(this.options.backgroundColor,0):this.renderer.setClearColor(this.options.backgroundColor,this.options.backgroundAlpha)),this.fps&&this.fps.update&&this.fps.update()),this.req=window.requestAnimationFrame(this.animationLoop)}restart(){if(this.scene)for(;this.scene.children.length;)this.scene.remove(this.scene.children[0]);"function"==typeof this.onRestart&&this.onRestart(),this.init()}init(){"function"==typeof this.onInit&&this.onInit()}destroy(){"function"==typeof this.onDestroy&&this.onDestroy(),this.el.removeEventListener("mousemove",this.onMouseMoveWrapper),window.removeEventListener("scroll",this.onMouseMoveWrapper),window.removeEventListener("resize",this.resize),window.cancelAnimationFrame(this.req),this.renderer&&(this.el.removeChild(this.renderer.domElement),this.renderer=null,this.scene=null)}},t.b=r.VantaBase},,,function(e,t,n){"use strict";n.r(t);var i=n(1);let r=32,o=r*r;const s=800,a=s/2,l="uniform float time;\nuniform float delta;\n\nvoid main() {\n\n vec2 uv = gl_FragCoord.xy / resolution.xy;\n vec4 tmpPos = texture2D( texturePosition, uv );\n vec3 position = tmpPos.xyz;\n vec3 velocity = texture2D( textureVelocity, uv ).xyz;\n\n float phase = tmpPos.w;\n\n phase = mod( ( phase + delta +\n length( velocity.xz ) * delta * 3. +\n max( velocity.y, 0.0 ) * delta * 6. ), 62.83 );\n\n gl_FragColor = vec4( position + velocity * delta * 15. , phase );\n\n}",u="uniform float time;\nuniform float testing;\nuniform float delta; // about 0.016\nuniform float separationDistance; // 20\nuniform float alignmentDistance; // 40\nuniform float cohesionDistance;\nuniform float speedLimit;\nuniform float freedomFactor;\nuniform vec3 predator;\n\nconst float width = resolution.x;\nconst float height = resolution.y;\n\nconst float PI = 3.141592653589793;\nconst float PI_2 = PI * 2.0;\n// const float VISION = PI * 0.55;\n\nfloat zoneRadius = 40.0;\nfloat zoneRadiusSquared = 1600.0;\n\nfloat separationThresh = 0.45;\nfloat alignmentThresh = 0.65;\n\nconst float UPPER_BOUNDS = BOUNDS;\nconst float LOWER_BOUNDS = -UPPER_BOUNDS;\n\nfloat rand(vec2 co){\n return fract(sin(dot(co.xy ,vec2(12.9898,78.233))) * 43758.5453);\n}\n\nvoid main() {\n\n zoneRadius = separationDistance + alignmentDistance + cohesionDistance;\n separationThresh = separationDistance / zoneRadius;\n alignmentThresh = ( separationDistance + alignmentDistance ) / zoneRadius;\n zoneRadiusSquared = zoneRadius * zoneRadius;\n\n\n vec2 uv = gl_FragCoord.xy / resolution.xy;\n vec3 birdPosition, birdVelocity;\n\n vec3 selfPosition = texture2D( texturePosition, uv ).xyz;\n vec3 selfVelocity = texture2D( textureVelocity, uv ).xyz;\n\n float dist;\n vec3 dir; // direction\n float distSquared;\n\n float separationSquared = separationDistance * separationDistance;\n float cohesionSquared = cohesionDistance * cohesionDistance;\n\n float f;\n float percent;\n\n vec3 velocity = selfVelocity;\n\n float limit = speedLimit;\n\n dir = predator * UPPER_BOUNDS - selfPosition;\n dir.z = 0.;\n // dir.z *= 0.6;\n dist = length( dir );\n distSquared = dist * dist;\n\n float preyRadius = 150.0;\n float preyRadiusSq = preyRadius * preyRadius;\n\n // move birds away from predator\n if (dist < preyRadius) {\n\n f = ( distSquared / preyRadiusSq - 1.0 ) * delta * 100.;\n velocity += normalize( dir ) * f;\n limit += 5.0;\n }\n\n // if (testing == 0.0) {}\n // if ( rand( uv + time ) < freedomFactor ) {}\n\n // Attract flocks to the center\n vec3 central = vec3( 0., 0., 0. );\n dir = selfPosition - central;\n dist = length( dir );\n\n dir.y *= 2.5;\n velocity -= normalize( dir ) * delta * 5.;\n\n for (float y=0.0;y<height;y++) {\n for (float x=0.0;x<width;x++) {\n\n vec2 ref = vec2( x + 0.5, y + 0.5 ) / resolution.xy;\n birdPosition = texture2D( texturePosition, ref ).xyz;\n\n dir = birdPosition - selfPosition;\n dist = length(dir);\n\n if (dist < 0.0001) continue;\n\n distSquared = dist * dist;\n\n if (distSquared > zoneRadiusSquared ) continue;\n\n percent = distSquared / zoneRadiusSquared;\n\n if ( percent < separationThresh ) { // low\n\n // Separation - Move apart for comfort\n f = (separationThresh / percent - 1.0) * delta;\n velocity -= normalize(dir) * f;\n\n } else if ( percent < alignmentThresh ) { // high\n\n // Alignment - fly the same direction\n float threshDelta = alignmentThresh - separationThresh;\n float adjustedPercent = ( percent - separationThresh ) / threshDelta;\n\n birdVelocity = texture2D( textureVelocity, ref ).xyz;\n\n f = ( 0.5 - cos( adjustedPercent * PI_2 ) * 0.5 + 0.5 ) * delta;\n velocity += normalize(birdVelocity) * f;\n\n } else {\n\n // Attraction / Cohesion - move closer\n float threshDelta = 1.0 - alignmentThresh;\n float adjustedPercent = ( percent - alignmentThresh ) / threshDelta;\n\n f = ( 0.5 - ( cos( adjustedPercent * PI_2 ) * -0.5 + 0.5 ) ) * delta;\n\n velocity += normalize(dir) * f;\n\n }\n }\n }\n\n // this make tends to fly around than down or up\n // if (velocity.y > 0.) velocity.y *= (1. - 0.2 * delta);\n\n // Speed Limits\n if ( length( velocity ) > limit ) {\n velocity = normalize( velocity ) * limit;\n }\n\n gl_FragColor = vec4( velocity, 1.0 );\n\n}",h="attribute vec2 reference;\nattribute float birdVertex;\n\nattribute vec3 birdColor;\n\nuniform sampler2D texturePosition;\nuniform sampler2D textureVelocity;\n\nvarying vec4 vColor;\nvarying float z;\n\nuniform float time;\n\nvoid main() {\n\n vec4 tmpPos = texture2D( texturePosition, reference );\n vec3 pos = tmpPos.xyz;\n vec3 velocity = normalize(texture2D( textureVelocity, reference ).xyz);\n\n vec3 newPosition = position;\n\n if ( birdVertex == 4.0 || birdVertex == 7.0 ) {\n // flap wings\n newPosition.y = sin( tmpPos.w ) * 5.;\n }\n\n newPosition = mat3( modelMatrix ) * newPosition;\n\n velocity.z *= -1.;\n float xz = length( velocity.xz );\n float xyz = 1.;\n float x = sqrt( 1. - velocity.y * velocity.y );\n\n float cosry = velocity.x / xz;\n float sinry = velocity.z / xz;\n\n float cosrz = x / xyz;\n float sinrz = velocity.y / xyz;\n\n mat3 maty = mat3(\n cosry, 0, -sinry,\n 0 , 1, 0 ,\n sinry, 0, cosry\n );\n\n mat3 matz = mat3(\n cosrz , sinrz, 0,\n -sinrz, cosrz, 0,\n 0 , 0 , 1\n );\n newPosition = maty * matz * newPosition;\n newPosition += pos;\n z = newPosition.z;\n\n vColor = vec4( birdColor, 1.0 );\n gl_Position = projectionMatrix * viewMatrix * vec4( newPosition, 1.0 );\n}",c="varying vec4 vColor;\nvarying float z;\nuniform vec3 color;\nvoid main() {\n // Fake colors for now\n float rr = 0.2 + ( 1000. - z ) / 1000. * vColor.x;\n float gg = 0.2 + ( 1000. - z ) / 1000. * vColor.y;\n float bb = 0.2 + ( 1000. - z ) / 1000. * vColor.z;\n gl_FragColor = vec4( rr, gg, bb, 1. );\n}",d=function(e){const t=e.image.data;let n=0;const i=t.length;return(()=>{const e=[];for(;n<i;){const i=Math.random()*s-a,r=Math.random()*s-a,o=Math.random()*s-a;t[n+0]=i,t[n+1]=r,t[n+2]=o,t[n+3]=1,e.push(n+=4)}return e})()},f=function(e){const t=e.image.data;let n=0;const i=t.length;return(()=>{const e=[];for(;n<i;){const i=Math.random()-.5,r=Math.random()-.5,o=Math.random()-.5;t[n+0]=10*i,t[n+1]=10*r,t[n+2]=10*o,t[n+3]=1,e.push(n+=4)}return e})()};THREE.BirdGeometry=function(e){e.quantity&&(r=Math.pow(2,e.quantity),o=r*r);const t=3*o,n=3*t;THREE.BufferGeometry.call(this);const i=new THREE.BufferAttribute(new Float32Array(3*n),3),s=new THREE.BufferAttribute(new Float32Array(3*n),3),a=new THREE.BufferAttribute(new Float32Array(2*n),2),l=new THREE.BufferAttribute(new Float32Array(n),1);this.addAttribute("position",i),this.addAttribute("birdColor",s),this.addAttribute("reference",a),this.addAttribute("birdVertex",l);let u=0;const h=function(){for(let e=0;e<arguments.length;e++)i.array[u++]=arguments[e]},c=e.wingSpan||20;for(let e=0;e<o;e++)h(0,-0,-20,0,4,-20,0,0,30),h(0,0,-15,-c,0,0,0,0,15),h(0,0,15,c,0,0,0,0,-15);const d={};for(u=0;u<3*t;u++){const t=~~(u/3),n=t%r/r,i=~~(t/r)/r,h=null!=e.color1?e.color1:4456448,c=null!=e.color2?e.color2:6684672,f=new THREE.Color(h),m=new THREE.Color(c),p=~~(u/9)/o,v=p.toString(),y=-1!=e.colorMode.indexOf("Gradient");let g,b;if(b=y?Math.random():p,!y&&d[v])g=d[v];else if(0==e.colorMode.indexOf("variance")){const e=(f.r+Math.random()*m.r).clamp(0,1),t=(f.g+Math.random()*m.g).clamp(0,1),n=(f.b+Math.random()*m.b).clamp(0,1);g=new THREE.Color(e,t,n)}else g=0==e.colorMode.indexOf("mix")?new THREE.Color(h+b*c):f.lerp(m,b);y||d[v]||(d[v]=g),s.array[3*u+0]=g.r,s.array[3*u+1]=g.g,s.array[3*u+2]=g.b,a.array[2*u]=n,a.array[2*u+1]=i,l.array[u]=u%9}return this.scale(.2,.2,.2)},THREE.BirdGeometry.prototype=Object.create(THREE.BufferGeometry.prototype);class m extends i.b{static initClass(){this.prototype.defaultOptions={backgroundColor:465199,color1:16711680,color2:53759,colorMode:"varianceGradient",wingSpan:30,speedLimit:5,separation:20,alignment:20,cohesion:20,quantity:5}}initComputeRenderer(){this.gpuCompute=new function(e,t,n){this.variables=[],this.currentTextureIndex=0;var i=new THREE.Scene,r=new THREE.Camera;r.position.z=1;var o={texture:{value:null}},s=u("uniform sampler2D texture;\n\nvoid main() {\n\n\tvec2 uv = gl_FragCoord.xy / resolution.xy;\n\n\tgl_FragColor = texture2D( texture, uv );\n\n}\n",o),a=new THREE.Mesh(new THREE.PlaneBufferGeometry(2,2),s);function l(n){n.defines.resolution="vec2( "+e.toFixed(1)+", "+t.toFixed(1)+" )"}function u(e,t){t=t||{};var n=new THREE.ShaderMaterial({uniforms:t,vertexShader:"void main()\t{\n\n\tgl_Position = vec4( position, 1.0 );\n\n}\n",fragmentShader:e});return l(n),n}i.add(a),this.addVariable=function(e,t,n){var i={name:e,initialValueTexture:n,material:this.createShaderMaterial(t),dependencies:null,renderTargets:[],wrapS:null,wrapT:null,minFilter:THREE.NearestFilter,magFilter:THREE.NearestFilter};return this.variables.push(i),i},this.setVariableDependencies=function(e,t){e.dependencies=t},this.init=function(){if(!n.extensions.get("OES_texture_float"))return"No OES_texture_float support for float textures.";if(0===n.capabilities.maxVertexTextures)return"No support for vertex shader textures.";for(var i=0;i<this.variables.length;i++){var r=this.variables[i];r.renderTargets[0]=this.createRenderTarget(e,t,r.wrapS,r.wrapT,r.minFilter,r.magFilter),r.renderTargets[1]=this.createRenderTarget(e,t,r.wrapS,r.wrapT,r.minFilter,r.magFilter),this.renderTexture(r.initialValueTexture,r.renderTargets[0]),this.renderTexture(r.initialValueTexture,r.renderTargets[1]);var o=r.material,s=o.uniforms;if(null!==r.dependencies)for(var a=0;a<r.dependencies.length;a++){var l=r.dependencies[a];if(l.name!==r.name){for(var u=!1,h=0;h<this.variables.length;h++)if(l.name===this.variables[h].name){u=!0;break}if(!u)return"Variable dependency not found. Variable="+r.name+", dependency="+l.name}s[l.name]={value:null},o.fragmentShader="\nuniform sampler2D "+l.name+";\n"+o.fragmentShader}}return this.currentTextureIndex=0,null},this.compute=function(){for(var e=this.currentTextureIndex,t=0===this.currentTextureIndex?1:0,n=0,i=this.variables.length;n<i;n++){var r=this.variables[n];if(null!==r.dependencies)for(var o=r.material.uniforms,s=0,a=r.dependencies.length;s<a;s++){var l=r.dependencies[s];o[l.name].value=l.renderTargets[e].texture}this.doRenderTarget(r.material,r.renderTargets[t])}this.currentTextureIndex=t},this.getCurrentRenderTarget=function(e){return e.renderTargets[this.currentTextureIndex]},this.getAlternateRenderTarget=function(e){return e.renderTargets[0===this.currentTextureIndex?1:0]},this.addResolutionDefine=l,this.createShaderMaterial=u,this.createRenderTarget=function(n,i,r,o,s,a){return n=n||e,i=i||t,r=r||THREE.ClampToEdgeWrapping,o=o||THREE.ClampToEdgeWrapping,s=s||THREE.NearestFilter,a=a||THREE.NearestFilter,new THREE.WebGLRenderTarget(n,i,{wrapS:r,wrapT:o,minFilter:s,magFilter:a,format:THREE.RGBAFormat,type:/(iPad|iPhone|iPod)/g.test(navigator.userAgent)?THREE.HalfFloatType:THREE.FloatType,stencilBuffer:!1})},this.createTexture=function(n,i){n=n||e,i=i||t;var r=new Float32Array(n*i*4),o=new THREE.DataTexture(r,e,t,THREE.RGBAFormat,THREE.FloatType);return o.needsUpdate=!0,o},this.renderTexture=function(e,t){o.texture.value=e,this.doRenderTarget(s,t),o.texture.value=null},this.doRenderTarget=function(e,t){a.material=e,n.render(i,r,t),a.material=s}}(r,r,this.renderer);const e=this.gpuCompute.createTexture(),t=this.gpuCompute.createTexture();d(e),f(t),this.velocityVariable=this.gpuCompute.addVariable("textureVelocity",u,t),this.positionVariable=this.gpuCompute.addVariable("texturePosition",l,e),this.gpuCompute.setVariableDependencies(this.velocityVariable,[this.positionVariable,this.velocityVariable]),this.gpuCompute.setVariableDependencies(this.positionVariable,[this.positionVariable,this.velocityVariable]),this.positionUniforms=this.positionVariable.material.uniforms,this.velocityUniforms=this.velocityVariable.material.uniforms,this.positionUniforms.time={value:0},this.positionUniforms.delta={value:0},this.velocityUniforms.time={value:1},this.velocityUniforms.delta={value:0},this.velocityUniforms.testing={value:1},this.velocityUniforms.separationDistance={value:1},this.velocityUniforms.alignmentDistance={value:1},this.velocityUniforms.cohesionDistance={value:1},this.velocityUniforms.speedLimit={value:1},this.velocityUniforms.freedomFactor={value:1},this.velocityUniforms.predator={value:new THREE.Vector3},this.velocityVariable.material.defines.BOUNDS=s.toFixed(2),this.velocityVariable.wrapS=THREE.RepeatWrapping,this.velocityVariable.wrapT=THREE.RepeatWrapping,this.positionVariable.wrapS=THREE.RepeatWrapping,this.positionVariable.wrapT=THREE.RepeatWrapping;const n=this.gpuCompute.init();null!==n&&console.error(n)}initBirds(){const e=new THREE.BirdGeometry(this.options);this.birdUniforms={color:{value:new THREE.Color(16720384)},texturePosition:{value:null},textureVelocity:{value:null},time:{value:1},delta:{value:0}};const t=new THREE.ShaderMaterial({uniforms:this.birdUniforms,vertexShader:h,fragmentShader:c,side:THREE.DoubleSide}),n=new THREE.Mesh(e,t);return n.rotation.y=Math.PI/2,n.matrixAutoUpdate=!1,n.updateMatrix(),this.scene.add(n)}onInit(){this.camera=new THREE.PerspectiveCamera(75,this.width/this.height,1,3e3),this.camera.position.z=350,this.fog=new THREE.Fog(16777215,100,1e3),this.mouseX=this.mouseY=0;try{this.initComputeRenderer(),this.valuesChanger=this.valuesChanger.bind(this),this.valuesChanger(),this.initBirds()}catch(e){console.error("[vanta.js] birds init error: ",e)}}valuesChanger(){return this.velocityUniforms.separationDistance.value=this.options.separation,this.velocityUniforms.alignmentDistance.value=this.options.alignment,this.velocityUniforms.speedLimit.value=this.options.speedLimit,this.velocityUniforms.cohesionDistance.value=this.options.cohesion}onUpdate(){this.now=performance.now(),this.last||(this.last=this.now);let e=(this.now-this.last)/1e3;return e>1&&(e=1),this.last=this.now,this.positionUniforms.time.value=this.now,this.positionUniforms.delta.value=e,this.velocityUniforms.time.value=this.now,this.velocityUniforms.delta.value=e,this.birdUniforms.time.value=this.now,this.birdUniforms.delta.value=e,this.velocityUniforms.predator.value.set(this.mouseX,-this.mouseY,0),this.mouseX=1e4,this.mouseY=1e4,this.gpuCompute.compute(),this.birdUniforms.texturePosition.value=this.gpuCompute.getCurrentRenderTarget(this.positionVariable).texture,this.birdUniforms.textureVelocity.value=this.gpuCompute.getCurrentRenderTarget(this.velocityVariable).texture}onMouseMove(e,t){return this.mouseX=e-.5,this.mouseY=t-.5}onDestroy(){}onResize(){}}m.initClass(),i.a.register("BIRDS",m)}]); |