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<!--
Copyright 2009, Google Inc.
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are
met:
* Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
* Redistributions in binary form must reproduce the above
copyright notice, this list of conditions and the following disclaimer
in the documentation and/or other materials provided with the
distribution.
* Neither the name of Google Inc. nor the names of its
contributors may be used to endorse or promote products derived from
this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
"AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
(INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
-->
<!--
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="o3dscript">
o3djs.require('o3djs.util');
o3djs.require('o3djs.math');
o3djs.require('o3djs.material');
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.
// Create a basic material
var material = o3djs.material.createBasicMaterial(
g_pack,
g_viewInfo,
[1, 1, 1, 1],
true);
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('diffuse', '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,
'diffuse',
'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 -->
</body>
</html>
|
