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authorpetersont@google.com <petersont@google.com@0039d316-1c4b-4281-b951-d872f2087c98>2010-05-17 21:36:08 +0000
committerpetersont@google.com <petersont@google.com@0039d316-1c4b-4281-b951-d872f2087c98>2010-05-17 21:36:08 +0000
commit422e69530732e4f54acb649ea8130ed22e3ccb53 (patch)
treecd556e693f9448a83d63a764e13561c67c883d6e /o3d/samples/o3d-webgl-samples
parenta81e44e1ccd4c19de283dcd1e90da04bf8ae0208 (diff)
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Sorts drawlists by priority or by depth as indicated by the flag in the DrawPass.
Review URL: http://codereview.chromium.org/2075003 git-svn-id: svn://svn.chromium.org/chrome/trunk/src@47459 0039d316-1c4b-4281-b951-d872f2087c98
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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 ZSorting.
+-->
+<!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>
+ZSorting.
+</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.util');
+o3djs.require('o3djs.math');
+o3djs.require('o3djs.rendergraph');
+o3djs.require('o3djs.primitives');
+o3djs.require('o3djs.material');
+
+// Events
+// init() once the page has finished loading.
+// unload() when the page is unloaded.
+window.onload = init;
+window.onunload = unload;
+
+// global variables
+var g_timeMult = 1.0;
+var g_framesRendered = 0;
+var g_o3d;
+var g_math;
+var g_client;
+var g_viewInfo;
+var g_pack;
+var g_clock = 0;
+var g_finished = false; // for selenium testing
+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 = 100;
+
+/**
+ * Make a grid of transforms and put a teapot instance on each one
+ * @param {!o3d.Pack} pack Pack to create transforms in.
+ * @param {!o3d.Shape} shape Shape to instance.
+ */
+function createInstances(pack, shape) {
+ for (var g = 0; g < GROUPS_ACROSS; g++) {
+ for (var h = 0; h < GROUPS_ACROSS; h++) {
+ for (var i = 0; i < GROUPS_ACROSS; i++) {
+ var groupTransform = pack.createObject('Transform');
+ g_groupTransforms[g_groupTransforms.length] = groupTransform;
+ groupTransform.parent = g_client.root;
+ groupTransform.translate(
+ (g * UNITS_ACROSS_GROUP - HALF_WIDTH) * UNIT_SPACING,
+ (h * UNITS_ACROSS_GROUP - HALF_WIDTH) * UNIT_SPACING,
+ (i * UNITS_ACROSS_GROUP - HALF_WIDTH) * UNIT_SPACING);
+ for (var x = 0; x < UNITS_ACROSS_GROUP; x++) {
+ for (var y = 0; y < UNITS_ACROSS_GROUP; y++) {
+ for (var z = 0; z < UNITS_ACROSS_GROUP; z++) {
+ var transform = pack.createObject('Transform');
+ transform.parent = groupTransform;
+ transform.addShape(shape);
+ transform.translate(
+ (x - UNITS_ACROSS_GROUP * 0.5) * UNIT_SPACING,
+ (y - UNITS_ACROSS_GROUP * 0.5) * UNIT_SPACING,
+ (z - UNITS_ACROSS_GROUP * 0.5) * UNIT_SPACING);
+ transform.createParam('diffuse', 'ParamFloat4').value = [
+ (g * UNITS_ACROSS_GROUP + x) * (1 / TOTAL_ACROSS),
+ (h * UNITS_ACROSS_GROUP + y) * (1 / TOTAL_ACROSS),
+ (i * UNITS_ACROSS_GROUP + z) * (1 / TOTAL_ACROSS),
+ 0.5];
+ }
+ }
+ }
+ }
+ }
+ }
+}
+
+/**
+ * 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) {
+ // Initialize 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);
+
+ // Create a Material.
+ var material = o3djs.material.createBasicMaterial(
+ g_pack, g_viewInfo, [1, 1, 1, 1], true);
+
+ // Create a sphere.
+ var shape = o3djs.primitives.createSphere(g_pack, material, 30, 20, 20);
+
+ createInstances(g_pack, shape);
+
+ // Setup an onrender callback for animation.
+ g_client.setRenderCallback(onrender);
+
+ g_finished = true; // for selenium testing.
+}
+
+// spin the camera.
+function onrender(renderEvent) {
+ g_framesRendered++;
+ // Get the number of seconds since the last render.
+ var elapsedTime = renderEvent.elapsedTime;
+ g_clock += elapsedTime * g_timeMult;
+
+ var x = Math.sin(g_clock * 0.1) * 400;
+ var z = Math.cos(g_clock * 0.1) * 400;
+ var y = Math.sin(g_clock * 0.2) * 400;
+
+ 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>ZSorting</h1>
+Objects get zsorted for transparency.
+<br/>
+<!-- Start of O3D plugin -->
+<div id="o3d" style="width: 800px; height: 600px"></div>
+<!-- End of O3D plugin -->
+</body>
+</html>
generated by cgit v1.1 at 2025-01-30 19:06:06 +0000