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<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.01 Transitional//EN"
"http://www.w3.org/TR/html4/loose.dtd">
<html>
<head>
<title>
Simple Scene Viewer
</title>
<style type="text/css">
html, body {
margin: 0;
padding: 0;
border: 0;
height: 100%;
}
</style>
</head>
<body onload="init();" onunload="uninit();">
<script type="text/javascript" src="../o3djs/base.js"></script>
<script type="text/javascript" id="o3dscript">
o3djs.require('o3djs.util');
o3djs.require('o3djs.math');
o3djs.require('o3djs.quaternions');
o3djs.require('o3djs.rendergraph');
o3djs.require('o3djs.pack');
o3djs.require('o3djs.arcball');
o3djs.require('o3djs.scene');
var g_root;
var g_o3d;
var g_math;
var g_quaternions;
var g_client;
var g_aball;
var g_thisRot;
var g_lastRot;
var g_pack = null;
var g_mainPack;
var g_viewInfo;
var g_lightPosParam;
var g_loadingElement;
var g_o3dWidth = -1;
var g_o3dHeight = -1;
var g_o3dElement;
var g_finished = false; // for selenium
var g_camera = {
farPlane: 5000,
nearPlane:0.1
};
var g_dragging = false;
function startDragging(e) {
g_lastRot = g_thisRot;
g_aball.click([e.x, e.y]);
g_dragging = true;
}
function drag(e) {
if (g_dragging) {
var rotationQuat = g_aball.drag([e.x, e.y]);
var rot_mat = g_quaternions.quaternionToRotation(rotationQuat);
g_thisRot = g_math.matrix4.mul(g_lastRot, rot_mat);
var m = g_root.localMatrix;
g_math.matrix4.setUpper3x3(m, g_thisRot);
g_root.localMatrix = m;
}
}
function stopDragging(e) {
g_dragging = false;
}
function updateCamera() {
var up = [0, 1, 0];
g_viewInfo.drawContext.view = g_math.matrix4.lookAt(g_camera.eye,
g_camera.target,
up);
g_lightPosParam.value = g_camera.eye;
}
function updateProjection() {
// Create a perspective projection matrix.
g_viewInfo.drawContext.projection = g_math.matrix4.perspective(
g_math.degToRad(45), g_o3dWidth / g_o3dHeight, g_camera.nearPlane,
g_camera.farPlane);
}
function scrollMe(e) {
if (e.deltaY) {
var t = 1;
if (e.deltaY > 0)
t = 11 / 12;
else
t = 13 / 12;
g_camera.eye = g_math.lerpVector(g_camera.target, g_camera.eye, t);
updateCamera();
}
}
function enableInput(enable) {
document.getElementById("url").disabled = !enable;
document.getElementById("load").disabled = !enable;
}
function loadFile(context, path) {
function callback(pack, parent, exception) {
enableInput(true);
if (exception) {
alert("Could not load: " + path + "\n" + exception);
g_loadingElement.innerHTML = "loading failed.";
} else {
g_loadingElement.innerHTML = "loading finished.";
// Generate draw elements and setup material draw lists.
o3djs.pack.preparePack(pack, g_viewInfo);
var bbox = o3djs.util.getBoundingBoxOfTree(g_client.root);
g_camera.target = g_math.lerpVector(bbox.minExtent, bbox.maxExtent, 0.5);
var diag = g_math.length(g_math.subVector(bbox.maxExtent,
bbox.minExtent));
g_camera.eye = g_math.addVector(g_camera.target, [0, 0, 1.5 * diag]);
g_camera.nearPlane = diag / 1000;
g_camera.farPlane = diag * 10;
setClientSize();
updateCamera();
updateProjection();
// Manually connect all the materials' lightWorldPos params to the context
var materials = pack.getObjectsByClassName('o3d.Material');
for (var m = 0; m < materials.length; ++m) {
var material = materials[m];
var param = material.getParam('lightWorldPos');
if (param) {
param.bind(g_lightPosParam);
}
}
g_finished = true; // for selenium
// Comment out the next line to dump lots of info.
if (false) {
o3djs.dump.dump('---dumping context---\n');
o3djs.dump.dumpParamObject(context);
o3djs.dump.dump('---dumping root---\n');
o3djs.dump.dumpTransformTree(g_client.root);
o3djs.dump.dump('---dumping render root---\n');
o3djs.dump.dumpRenderNodeTree(g_client.renderGraphRoot);
o3djs.dump.dump('---dump g_pack shapes---\n');
var shapes = pack.getObjectsByClassName('o3d.Shape');
for (var t = 0; t < shapes.length; t++) {
o3djs.dump.dumpShape(shapes[t]);
}
o3djs.dump.dump('---dump g_pack materials---\n');
var materials = pack.getObjectsByClassName('o3d.Material');
for (var t = 0; t < materials.length; t++) {
o3djs.dump.dump (
' ' + t + ' : ' + materials[t].className +
' : "' + materials[t].name + '"\n');
o3djs.dump.dumpParams(materials[t], ' ');
}
o3djs.dump.dump('---dump g_pack textures---\n');
var textures = pack.getObjectsByClassName('o3d.Texture');
for (var t = 0; t < textures.length; t++) {
o3djs.dump.dumpTexture(textures[t]);
}
o3djs.dump.dump('---dump g_pack effects---\n');
var effects = pack.getObjectsByClassName('o3d.Effect');
for (var t = 0; t < effects.length; t++) {
o3djs.dump.dump (' ' + t + ' : ' + effects[t].className +
' : "' + effects[t].name + '"\n');
o3djs.dump.dumpParams(effects[t], ' ');
}
}
}
}
g_pack = g_client.createPack();
// Create a new transform for the loaded file
var parent = g_pack.createObject('Transform');
parent.parent = g_client.root;
if (path != null) {
g_loadingElement.innerHTML = "Loading: " + path;
enableInput(false);
try {
o3djs.scene.loadScene(g_client, g_pack, parent, path, callback);
} catch (e) {
enableInput(true);
g_loadingElement.innerHTML = "loading failed : " + e;
}
}
return parent;
}
function setClientSize() {
var newWidth = parseInt(g_client.width);
var newHeight = parseInt(g_client.height);
if (newWidth != g_o3dWidth || newHeight != g_o3dHeight) {
g_o3dWidth = newWidth;
g_o3dHeight = newHeight;
updateProjection();
// Sets a new area size for arcball.
g_aball.setAreaSize(g_o3dWidth, g_o3dHeight);
}
}
/**
* Called every frame.
*/
function onRender() {
// If we don't check the size of the client area every frame we don't get a
// chance to adjust the perspective matrix fast enough to keep up with the
// browser resizing us.
setClientSize();
}
/**
* 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) {
var path = window.location.href;
var index = path.lastIndexOf('/');
path = path.substring(0, index+1) + 'assets/cube.o3dtgz';
var url = document.getElementById("url").value = path;
g_loadingElement = document.getElementById('loading');
g_o3dElement = clientElements[0];
g_o3d = g_o3dElement.o3d;
g_math = o3djs.math;
g_quaternions = o3djs.quaternions;
g_client = g_o3dElement.client;
g_mainPack = g_client.createPack();
// Create the render graph for a view.
g_viewInfo = o3djs.rendergraph.createBasicView(
g_mainPack,
g_client.root,
g_client.renderGraphRoot);
g_lastRot = g_math.matrix4.identity();
g_thisRot = g_math.matrix4.identity();
var root = g_client.root;
g_aball = o3djs.arcball.create(100, 100);
setClientSize();
// Set the light at the same position as the camera to create a headlight
// that illuminates the object straight on.
var paramObject = g_mainPack.createObject('ParamObject');
g_lightPosParam = paramObject.createParam('lightWorldPos', 'ParamFloat3');
g_camera.target = [0, 0, 0];
g_camera.eye = [0, 0, 5];
updateCamera();
doload()
o3djs.event.addEventListener(g_o3dElement, 'mousedown', startDragging);
o3djs.event.addEventListener(g_o3dElement, 'mousemove', drag);
o3djs.event.addEventListener(g_o3dElement, 'mouseup', stopDragging);
o3djs.event.addEventListener(g_o3dElement, 'wheel', scrollMe);
g_client.setRenderCallback(onRender);
}
/**
* Removes any callbacks so they don't get called after the page has unloaded.
*/
function uninit() {
if (g_client) {
g_client.cleanup();
}
}
function doload() {
if (g_root) {
g_root.parent = null;
g_root = null;
}
if (g_pack) {
g_pack.destroy();
g_pack = null;
}
var url = document.getElementById('url').value;
g_root = loadFile(g_viewInfo.drawContext, url);
}
</script>
<table width="100%" style="height:100%;">
<tr><td valign="middle" align="center" height="100%">
<table width="100%" style="height:100%;"><tr><td height="100%">
<h1>
Simple Scene Viewer
</h1>
<table id="container" width="90%" style="height:60%;" border="2"><tr><td height="100%">
<div id="o3d" style="width: 100%; height: 100%;"></div>
</td></tr></table>
<p>
</p>
<input type="text" id="url" size="100">
<input type="button" id="load" onclick="doload();" value="load"><BR>
Drag The Mouse To Rotate<br/>
Scrollwheel To Zoom<br/>
Resize The Window To Resize The View
<div style="color: red;" id="loading"></div>
</td></tr></table>
</td></tr></table>
</body>
</html>