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diff --git a/o3d/samples/instancing.html b/o3d/samples/instancing.html new file mode 100644 index 0000000..344a385 --- /dev/null +++ b/o3d/samples/instancing.html @@ -0,0 +1,208 @@ +<!-- +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 Instancing example. + +Load the teapot, display it a bunch of times. +--> +<!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> +Instancing. +</title> +<!-- Include sample javascript library functions--> +<script type="text/javascript" src="o3djs/base.js"></script> + +<!-- Our javascript code --> +<script type="text/javascript"> +o3djs.require('o3djs.util'); +o3djs.require('o3djs.math'); +o3djs.require('o3djs.rendergraph'); +o3djs.require('o3djs.pack'); +o3djs.require('o3djs.scene'); + +// 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_clock = 0; +var g_timeMult = 1; +var g_finished = false; // for selenium testing + +/** + * Loads a scene into the transform graph. + * @param {!o3d.Pack} pack Pack to load scene into. + * @param {string} fileName filename of the scene. + * @param {!o3d.Transform} parent parent node in the transform graph to + * which to load the scene into. + */ +function loadScene(pack, fileName, parent) { + // Get our full path to the scene + var scenePath = o3djs.util.getCurrentURI() + fileName; + + // Load the file given the full path, and call the callback function + // when its done loading. + o3djs.scene.loadScene(g_client, pack, parent, scenePath, callback); + + /** + * Our callback is called once the scene has been loaded into memory + * from the web or locally. + * @param {!o3d.Pack} pack The pack that was passed in above. + * @param {!o3d.Transform} parent The parent that was passed in above. + * @param {*} exception null if loading succeeded. + */ + function callback(pack, parent, exception) { + if (exception) { + alert('Could not load: ' + fileName + '\n' + exception); + return; + } + // Generate draw elements and setup material draw lists. + o3djs.pack.preparePack(pack, g_viewInfo); + + // Find the "shape" for the teapot. + // I'm going to assume there is only one since I know the contents + // of the file. + var shape = pack.getObjectsByClassName('o3d.Shape')[0]; + + // now make a grid of transforms and put a teapot instance on each one + for (var x = 0; x < 10; x++) { + for (var y = 0; y < 10; y++) { + for (var z = 0; z < 10; z++) { + var transform = pack.createObject('Transform'); + transform.parent = g_client.root; + transform.addShape(shape); + var angles = [ + (x - 4.5) * 0.2, + (y - 4.5) * 0.2, + (z - 4.5) * 0.2]; + transform.translate((x - 4.5) * 100, + (y - 4.5) * 100, + (z - 4.5) * 100); + transform.rotateZYX(angles); + } + } + } + + g_finished = true; // for selenium testing. + } +} + +/** + * Creates the client area. + */ +function init() { + o3djs.util.makeClients(initStep2); +} + +/** + * Initializes O3D and loads the scene into the transform graph. + * @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); + + // 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); + + // Creates a transform to put our data on. + var my_data_root = g_pack.createObject('Transform'); + + // Load the scene into the transform graph as a child my_data_root + loadScene(g_pack, 'assets/teapot.o3dtgz', my_data_root); + + // Setup an onrender callback for animation. + g_client.setRenderCallback(onrender); +} + +// spin the camera. +function onrender(render_event) { + // Get the number of seconds since the last render. + var elapsedTime = render_event.elapsedTime; + g_clock += elapsedTime * g_timeMult; + + var x = Math.sin(g_clock * 0.41) * 400; + var z = Math.cos(g_clock * 0.31) * 1000; + var y = Math.sin(g_clock * 0.61) * 200; + + 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>Instancing</h1> +1000 Teapots +<br/> +<!-- Start of O3D plugin --> +<div id="o3d" style="width: 800px; height: 600px;"></div> +<!-- End of O3D plugin --> +</body> +</html> |