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<!--
O3D Animation.
Shows various things being animated by O3D.
-->
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<meta http-equiv="content-type" content="text/html; charset=UTF-8">
<title>
Animation.
</title>
<!-- Include sample javascript library functions-->
<script type="text/javascript" src="o3djs/base.js"></script>
<!-- Our javascript code -->
<script type="text/javascript" id="o3d">
o3djs.require('o3djs.util');
o3djs.require('o3djs.math');
o3djs.require('o3djs.effect');
o3djs.require('o3djs.rendergraph');
o3djs.require('o3djs.primitives');
// Events
// init() once the page has finished loading.
window.onload = init;
// global variables
var g_framesRendered = 0;
var g_o3d;
var g_math;
var g_client;
var g_viewInfo;
var g_pack;
var g_finished = false; // for selenium
var g_groupTransforms = [];
var GROUPS_ACROSS = 2;
var UNITS_ACROSS_GROUP = 2;
var TOTAL_ACROSS = GROUPS_ACROSS * UNITS_ACROSS_GROUP;
var HALF_WIDTH = TOTAL_ACROSS * 0.0;
var UNIT_SPACING = 200;
/**
* Creates an oscillating animation to animate a single float from 0 to
* endOutput over endInput seconds with a little bit of ease in, ease out.
*
* @param {!o3d.Pack} pack Pack to associate created objects with.
* @param {!o3d.ParamObject} paramObject Object that has param to animate.
* @param {string} paramName Name of the param to animate.
* @param {number} endInput Number of seconds to take to get
* @param {number} endOutput Target value.
*/
function attachParamFloatAnimation(pack,
paramObject,
paramName,
endInput,
endOutput) {
// Create a FunctionEval through which to evaluate the curve.
var functionEval = pack.createObject('FunctionEval');
// Bind the param we want to get its value from our FunctionEval's output.
paramObject.getParam(paramName).bind(functionEval.getParam('output'));
// Create a curve
var curve = pack.createObject('Curve');
// Set the functionEval to use the curve as it's function.
functionEval.functionObject = curve;
// Create 2 keys for the curve.
var key1 = curve.createKey('BezierCurveKey');
key1.input = 0;
key1.output = 0;
key1.outTangent = [0, endInput * 2 / 3];
var key2 = curve.createKey('BezierCurveKey');
key2.inTangent = [endInput / 3, endOutput];
key2.input = endInput;
key2.output = endOutput;
// Set the curve to oscillate.
curve.postInfinity = g_o3d.Curve.OSCILLATE;
// Make a SecondCounter to provide an input to the functionEval.
var counter = pack.createObject('SecondCounter');
// Bind the counter's count to the input of the FunctionEval.
functionEval.getParam('input').bind(counter.getParam('count'));
}
/**
* Creates an oscillating animation to animate a single float of a float4 from 0
* to endOutput over endInput seconds with a little bit of ease in, ease out.
*
* @param {!o3d.Pack} pack Pack to associate created objects with.
* @param {!o3d.ParamObject} paramObject Object that has param to animate.
* @param {string} paramName Name of the param Float4 to animate.
* @param {string} innerParamName Name of the individual float to animate.
* @param {number} endInput Duration of animation.
* @param {number} endOutput Target value.
* @return {!o3d.ParamObject} The created ParamOperation.
*/
function attach1FloatOfFloat4Animation(pack,
paramObject,
paramName,
innerParamName,
endInput,
endOutput) {
var paramOp = pack.createObject('ParamOp4FloatsToFloat4');
paramObject.getParam(paramName).bind(paramOp.getParam('output'));
attachParamFloatAnimation(pack, paramOp, innerParamName, endInput, endOutput);
return paramOp;
}
/**
* Creates an animation to animate one of the 9 values of a TRSToMatrix4 and
* binds it to a transform.
*
* @param {!o3d.Pack} pack Pack to associate created objects with.
* @param {!o3d.Transform} transform Transform to animate.
* @param {number} endInput Duration of animation.
* @param {number} endOutput Target value.
* @param {string} paramName Name of param to animate.
* @return {!o3d.TRSToMatrix4} The created TRSToMatrix4.
*/
function attachTRSAnimation(pack, transform, endInput, endOutput, paramName) {
var trs = pack.createObject('TRSToMatrix4');
transform.getParam('localMatrix').bind(trs.getParam('output'));
attachParamFloatAnimation(pack, trs, paramName, endInput, endOutput);
return trs;
}
/**
* Creates the client area.
*/
function init() {
o3djs.util.makeClients(initStep2);
}
/**
* Initializes O3D and sets up some shapes with animations.
*/
function initStep2(clientElements) {
// Initializes global variables and libraries.
var o3dElement = clientElements[0];
g_o3d = o3dElement.o3d;
g_math = o3djs.math;
g_client = o3dElement.client;
// Creates a pack to manage our resources/assets
g_pack = g_client.createPack();
g_viewInfo = o3djs.rendergraph.createBasicView(
g_pack,
g_client.root,
g_client.renderGraphRoot);
// Create our projection matrix, with a vertical field of view of 45
// degrees a near clipping plane of 0.1 and far clipping plane of 10000.
g_viewInfo.drawContext.projection = g_math.matrix4.perspective(
g_math.degToRad(45),
g_client.width / g_client.height,
0.1,
10000);
// Set our view
g_viewInfo.drawContext.view = g_math.matrix4.lookAt(
[100, 50, 400], // Eye.
[0, 0, 0], // Target.
[0, 1, 0]); // Up.
var effect = g_pack.createObject('Effect');
effect.loadFromFXString(document.getElementById('shader').value);
// Create a Material for the effect.
var material = g_pack.createObject('Material');
// Apply our effect to this material.
material.effect = effect;
// Set the material's drawList for translucent objects.
material.drawList = g_viewInfo.zOrderedDrawList;
// Create the parameters the effect needs on the material.
effect.createUniformParameters(material);
// Set the light position
var light_pos_param = material.getParam('light_pos');
light_pos_param.value = [100, 75, 400];
// Set the phong components of the light source
var light_ambient_param = material.getParam('light_ambient');
var light_diffuse_param = material.getParam('light_diffuse');
var light_specular_param = material.getParam('light_specular');
light_ambient_param.value = [0.1, 0.1, 0.1, 1]; // Gray
light_diffuse_param.value = [1, 1, 1, 1]; // White
light_specular_param.value = [0.5, 0.5, 0.5, 1]; // White
// Set the shininess of the material (for specular lighting)
var shininess_param = material.getParam('shininess');
shininess_param.value = 5.0;
// Position of the camera.
// (should be the same as the 'eye' position given below)
var camera_pos_param = material.getParam('camera_pos');
// Camera is at (0, 0, 3).
camera_pos_param.value = [0, 0, 3];
var data = [ { paramName: 'translateY',
endOutput: 50,
color: [1, 0, 0, 1] },
{ paramName: 'rotateY',
endOutput: Math.PI,
color: [0, 1, 0, 1] },
{ paramName: 'scaleY',
endOutput: 3,
color: [1, 1, 0, 1] },
{ paramName: '',
endOutput: Math.PI * 3,
color: [1, 1, 0, 1] } ];
for (var ii = 0; ii < 4; ++ii) {
var xPos = (ii - 1.5) * 100;
// Create a shape.
var shape;
switch (ii) {
case 0:
case 2:
shape = o3djs.primitives.createSphere(g_pack, material, 40, 10, 12);
break;
case 1:
case 3:
shape = o3djs.primitives.createCube(g_pack, material, 60);
break;
}
var transform = g_pack.createObject('Transform');
transform.parent = g_client.root;
transform.addShape(shape);
// Change the color of each one
transform.createParam('colorMult', 'ParamFloat4').value = data[ii].color;
switch (ii) {
case 0:
case 1:
case 2:
var trs = attachTRSAnimation(g_pack,
transform,
ii * 0.6 + 0.5,
data[ii].endOutput,
data[ii].paramName);
// space them out.
trs.translateX = xPos;
break;
case 3: {
var paramOp = attach1FloatOfFloat4Animation(g_pack,
transform,
'colorMult',
'input3',
0.5,
1);
paramOp.input1 = 1;
paramOp.input2 = 1;
transform.translate(xPos, 0, 0);
break;
}
}
}
g_finished = true; // for selenium
}
</script>
</head>
<body>
<h1>Animation</h1>
Once the scene is setup no Javascript is running.
<br/>
<!-- Start of O3D plugin -->
<div id="o3d" style="width: 800px; height: 600px"></div>
<!-- End of O3D plugin -->
<!-- Don't render the textarea -->
<div style="display:none">
<textarea id="shader" name="fx" cols="80" rows="20">
// The 4x4 world view projection matrix.
float4x4 worldViewProjection : WorldViewProjection;
float4x4 worldInverseTranspose : WorldInverseTranspose;
float4x4 world : World;
// positions of the light and camera
float3 light_pos;
float3 camera_pos;
// lighting components of the light source
float4 light_ambient;
float4 light_diffuse;
float4 light_specular;
// shininess of the material. (for specular lighting)
float shininess;
float4 colorMult;
// input parameters for our vertex shader
struct a2v {
float4 pos : POSITION;
float3 normal : NORMAL;
float4 col : COLOR;
};
// input parameters for our pixel shader
// also the output parameters for our vertex shader
struct v2f {
float4 pos : POSITION;
float4 pos2 : TEXCOORD0;
float3 norm : TEXCOORD1;
float3 light : TEXCOORD2;
float4 col : COLOR;
};
/**
* vsMain - our vertex shader
*
* @param IN.pos Position vector of vertex
* @param IN.normal Normal of vertex
* @param IN.col Color of vertex
*/
v2f vsMain(a2v IN) {
/**
* We use the standard phong illumination equation here.
* We restrict (clamp) the dot products so that we
* don't get any negative values.
* All vectors are normalized for proper calculations.
*
* The output color is the summation of the
* ambient, diffuse, and specular contributions.
*
* Note that we have to transform each vertex and normal
* by the view projection matrix first.
*/
v2f OUT;
OUT.pos = mul(IN.pos, worldViewProjection);
OUT.pos2 = OUT.pos;
OUT.norm = mul(float4(IN.normal, 0), worldInverseTranspose).xyz;
OUT.light = light_pos - mul(IN.pos, world).xyz;
OUT.col = IN.col;
return OUT;
}
/**
* psMain - pixel shader
*
* @param IN.pos Position vector of vertex
* @param IN.col Color of vertex
*/
float4 psMain(v2f IN): COLOR {
float3 light = normalize(IN.light);
float3 normal = normalize(IN.norm);
float3 r = normalize(reflect(normal, light));
float3 v = normalize(IN.pos2.xyz);
float4 litR = lit(dot(normal, light), dot(r, v), shininess);
return float4(((light_ambient + light_diffuse * litR.y) * colorMult +
light_specular * litR.z).xyz, colorMult.w);
}
// Here we tell our effect file *which* functions are
// our vertex and pixel shaders.
// #o3d VertexShaderEntryPoint vsMain
// #o3d PixelShaderEntryPoint psMain
// #o3d MatrixLoadOrder RowMajor
</textarea>
</div>
</body>
</html>