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Complete particle height map example
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,38 @@ | ||
| (function() { | ||
|
|
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| function HeightMapCanvas() { | ||
| var that = this; | ||
| var eventEmitter = new EventEmitter(); | ||
| var image = new Image(); | ||
|
|
||
| this.addListener = function(event, listener) { | ||
| return eventEmitter.addListener(event, listener); | ||
| }; | ||
|
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| this.imageData = null; | ||
|
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| this.initialize = function(canvas) { | ||
| context = canvas.getContext('2d'); | ||
|
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| image.onload = function() { | ||
| canvas.width = image.width; | ||
| canvas.height = image.height; | ||
| context.drawImage(image, 0, 0); | ||
|
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| that.imageData = context.getImageData(0, 0, image.width, image.height); | ||
| eventEmitter.emitEvent("onload", [canvas]); | ||
| }; | ||
|
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| image.src = "images/star_height128.jpg"; | ||
| }; | ||
| } | ||
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| window.samples.height_map_image = { | ||
| initialize: function(canvas) { | ||
| var heightMapCanvas = new HeightMapCanvas(); | ||
| heightMapCanvas.initialize(canvas); | ||
|
|
||
| return heightMapCanvas; | ||
| } | ||
| }; | ||
| })(); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| (function() { | ||
|
|
||
| function ParticleSample() { | ||
| var container, | ||
| camera, | ||
| scene, | ||
| renderer, | ||
| particles, | ||
| geometry, | ||
| materials = [], | ||
| parameters, | ||
| i, | ||
| h, | ||
| color; | ||
|
|
||
| var mouseX = 0, mouseY = 0; | ||
|
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| var width = sample_defaults.width * 2; | ||
| var height = sample_defaults.height * 2; | ||
|
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| this.initialize = function(canvas) { | ||
| camera = new THREE.PerspectiveCamera( 30, width / height, 1, 1000 ); | ||
| camera.lookAt( new THREE.Vector3(5, -20, -10) ); | ||
| camera.position.set( 0, 250, 150); | ||
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| scene = new THREE.Scene(); | ||
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| var instance = { active: false }; | ||
|
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| var heightMapImageSample = $("canvas[data-sample=height_map_image]").data("instance"); | ||
| heightMapImageSample.addListener("onload", function() { | ||
|
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| geometry = new THREE.Geometry(); | ||
|
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| for ( i = 0; i < 128; i ++ ) { | ||
| for ( j = 0; j < 128; j ++ ) { | ||
|
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| var vertex = new THREE.Vector3(); | ||
| vertex.x = i; | ||
| vertex.z = j; | ||
|
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| var dataPosition = i * 128 * 4 + j * 4; | ||
| vertex.y = heightMapImageSample.imageData.data[dataPosition] / 255.0 * 64; | ||
|
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| geometry.vertices.push( vertex ); | ||
| } | ||
| } | ||
|
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| var color = [0.4, 1.0, 0]; | ||
| var size = 2; | ||
|
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| material = new THREE.ParticleBasicMaterial( { size: size } ); | ||
| material.color.setHSV( color[0], color[1], color[2] ); | ||
|
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| particles = new THREE.ParticleSystem( geometry, material ); | ||
|
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| scene.add( particles ); | ||
|
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| var axisHelper = new THREE.AxisHelper(); | ||
| scene.add( axisHelper ); | ||
|
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| renderer = new THREE.WebGLRenderer({canvas: canvas}); | ||
| renderer.setSize( width, height ); | ||
|
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| function animate() { | ||
| requestAnimationFrame( animate ); | ||
| if(!instance.active || sample_defaults.paused) return; | ||
| renderer.render( scene, camera ); | ||
| } | ||
|
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| animate(); | ||
| }); | ||
|
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| return instance; | ||
| }; | ||
| } | ||
|
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| window.samples.particle_height_map = { | ||
| initialize: function(canvas) { | ||
| var particleSample = new ParticleSample(); | ||
| return particleSample.initialize(canvas); | ||
| } | ||
| }; | ||
| })(); |
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,84 @@ | ||
| (function() { | ||
|
|
||
| function ParticleSample() { | ||
| var container, | ||
| camera, | ||
| scene, | ||
| renderer, | ||
| particles, | ||
| geometry, | ||
| materials = [], | ||
| parameters, | ||
| i, | ||
| h, | ||
| color; | ||
|
|
||
| var mouseX = 0, mouseY = 0; | ||
|
|
||
| var width = sample_defaults.width * 2; | ||
| var height = sample_defaults.height * 2; | ||
|
|
||
| this.initialize = function(canvas) { | ||
| camera = new THREE.PerspectiveCamera( 30, width / height, 1, 1000 ); | ||
| camera.lookAt( new THREE.Vector3(5, -20, -10) ); | ||
| camera.position.set( 0, 250, 150); | ||
|
|
||
| scene = new THREE.Scene(); | ||
|
|
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| var instance = { active: false }; | ||
|
|
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| var heightMapImageSample = $("canvas[data-sample=height_map_image]").data("instance"); | ||
| heightMapImageSample.addListener("onload", function() { | ||
|
|
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| geometry = new THREE.Geometry(); | ||
|
|
||
| for ( i = 0; i < 128; i ++ ) { | ||
| for ( j = 0; j < 128; j ++ ) { | ||
|
|
||
| var vertex = new THREE.Vector3(); | ||
| vertex.x = i; | ||
| vertex.z = j; | ||
|
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| var dataPosition = i * 128 * 4 + j * 4; | ||
| vertex.y = heightMapImageSample.imageData.data[dataPosition] / 255.0 * 64; | ||
|
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| geometry.vertices.push( vertex ); | ||
| } | ||
| } | ||
|
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| var color = [0.4, 1.0, 0]; | ||
| var size = 2; | ||
|
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| material = new THREE.ParticleBasicMaterial( { size: size } ); | ||
| material.color.setHSV( color[0], color[1], color[2] ); | ||
|
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| particles = new THREE.ParticleSystem( geometry, material ); | ||
|
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| scene.add( particles ); | ||
|
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| var axisHelper = new THREE.AxisHelper(); | ||
| scene.add( axisHelper ); | ||
|
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| renderer = new THREE.WebGLRenderer({canvas: canvas}); | ||
| renderer.setSize( width, height ); | ||
|
|
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| function animate() { | ||
| requestAnimationFrame( animate ); | ||
| if(!instance.active || sample_defaults.paused) return; | ||
| renderer.render( scene, camera ); | ||
| } | ||
|
|
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| animate(); | ||
| }); | ||
|
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| return instance; | ||
| }; | ||
| } | ||
|
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| window.samples.particle_height_map_vertex_texture = { | ||
| initialize: function(canvas) { | ||
| var particleSample = new ParticleSample(); | ||
| return particleSample.initialize(canvas); | ||
| } | ||
| }; | ||
| })(); |