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<!--
Copyright 2010, 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 Multiple Lights example.
Shows a simple cube with one light on each corner.
-->
<!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>
Multiple Lights
</title>
<!-- Include sample javascript library functions-->
<script type="text/javascript" src="../o3d-webgl/base.js"></script>
<script type="text/javascript" src="../o3djs/base.js"></script>
<!-- Our javascript code -->
<script type="text/javascript" id="o3dscript">
o3djs.base.o3d = o3d;
o3djs.require('o3djs.webgl');
o3djs.require('o3djs.math');
o3djs.require('o3djs.rendergraph');
o3djs.require('o3djs.material');
o3djs.require('o3djs.primitives');
// Events
// init() once the page has finished loading.
// unload() when the page is unloaded.
window.onload = init;
window.onunload = unload;
// global variables
var g_o3d;
var g_math;
var g_client;
var g_viewInfo;
var g_pack;
var g_transform = null;
var g_finished = false; // for selenium testing.
var g_clock = 0;
var g_timeMult = 1;
/**
* Creates the client area.
*/
function init() {
o3djs.webgl.makeClients(initStep2);
}
/**
* Initializes O3D and creates one shape.
* @param {Array} clientElements Array of o3d object elements.
*/
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();
// Create the render graph for a view.
g_viewInfo = o3djs.rendergraph.createBasicView(
g_pack,
g_client.root,
g_client.renderGraphRoot);
// Set 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);
// Create a material.
var material = g_pack.createObject('Material');
material.drawList = g_viewInfo.performanceDrawList;
material.createParam('diffuse', 'ParamFloat4').value = [.5, .5, .5, 1];
// Create some suitable defaults for the material to save the user having
// to know all this stuff right off the bat.
material.createParam('emissive', 'ParamFloat4').value = [0, 0, 0, 1];
material.createParam('ambient', 'ParamFloat4').value = [0, 0, 0, 0];
material.createParam('specular', 'ParamFloat4').value = [1, 1, 1, 1];
material.createParam('shininess', 'ParamFloat').value = 10;
material.createParam('specularFactor', 'ParamFloat').value = 1;
o3djs.material.attachStandardEffect(
g_pack,
material,
g_viewInfo,
'blinn',
{lights: 8});
var materialColorParamList = material.getParam('lightColorList');
var colorParamList = g_pack.createObject('ParamArray');
var materialLightPositionList = material.getParam('lightWorldPosList');
var lightPositionParamList = g_pack.createObject('ParamArray');
// Create a cylinder.
var shape = o3djs.primitives.createCube(
g_pack,
material,
150);
g_transform = g_pack.createObject('Transform');
// Add the cylinder to the root transform.
g_transform.addShape(shape);
g_transform.parent = g_client.root;
var colors = [
[0, 0, 0, 1], // null light
[1, 0, 0, 1],
[0, 0, 1, 1],
[0, 1, 0, 1],
[1, 1, 1, 1],
[0, 1, 1, 1],
[1, 1, 0, 1],
[1, 0, 1, 1]];
var lightDist = 150;
for (var i = 0; i < 8; i++) {
colorParamList.createParam(i,'ParamFloat4').value = colors[i];
var position = [
(i&1)?lightDist:-lightDist,
(i&2)?lightDist:-lightDist,
(i&4)?lightDist:-lightDist
];
lightPositionParamList.createParam(i,'ParamFloat3').value = position;
}
materialLightPositionList.value = lightPositionParamList;
materialColorParamList.value = colorParamList;
// Setup an onrender callback for animation.
g_client.setRenderCallback(onrender);
g_finished = true; // for selenium testing.
}
/**
* Called every frame.
* @param {!o3d.RenderEvent} renderEvent Info for rendering.
*/
function onrender(renderEvent) {
// Get the number of seconds since the last render.
var elapsedTime = renderEvent.elapsedTime;
g_clock += elapsedTime * g_timeMult;
var x = Math.sin(g_clock * 0.3) * 400;
var z = Math.cos(g_clock * 0.3) * 400;
var y = Math.sin(g_clock * 0.7) * 200 + 100;
// spin the camera.
g_viewInfo.drawContext.view = g_math.matrix4.lookAt(
[x, y, z], // eye
[0, 0, 0], // target
[0, 1, 0]); // up
}
/**
* Removes any callbacks so they don't get called after the page has unloaded.
*/
function unload() {
if (g_client) {
g_client.cleanup();
}
}
</script>
</head>
<body>
<h1>Multiple Lights</h1>
<!-- Start of O3D plugin -->
<div id="o3d" style="width: 600px; height: 400px;"></div>
<!-- End of O3D plugin -->
</body>
</html>
|
