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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.
-->
<!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>Bubbles Demo</title>
<link type="text/css" href="css/style.css" rel="stylesheet" />
<!-- Use jQuery UI for the sliders. -->
<link type="text/css"
href="third_party/jquery/css/jquery-ui-1.8.4.custom.css" rel="stylesheet" />
<script type="text/javascript"
src="third_party/jquery/jquery-1.4.2.min.js"></script>
<script type="text/javascript"
src="third_party/jquery/jquery-ui-1.8.4.custom.min.js"></script>
<!-- Our javascript code -->
<script type="text/javascript" src="../../o3d-webgl/base.js"></script>
<script type="text/javascript" src="../../o3djs/base.js"></script>
<script type="text/javascript" src="js/bubbledemo.js"></script>
<script type="text/javascript" src="js/environment.js"></script>
<script type="text/javascript" src="js/noise.js"></script>
<script type="text/javascript" src="js/iridescence.js"></script>
<script type="text/javascript" src="js/modulation.js"></script>
<script type="text/javascript" src="js/controls.js"></script>
<script type="text/javascript" src="js/main.js"></script>
<!--
This demo is based off of the bubble demo created for o3d command buffers:
http://code.google.com/p/o3d/source/browse/trunk/googleclient/o3d/?r=55#o3d/command_buffer/samples/bubble
-->
</head>
<body>
<!-- The o3d container. -->
<div id="o3d"></div>
<div id="floatControls">
<b>Options:</b>
<ul>
<li>
<label>
Bubble Options?
<input type="checkbox" onclick="toggle(0, this); void(0);" />
</label>
</li>
<li>
<label>
Iridescence Texture?
<input type="checkbox" onclick="toggle(1, this); void(0);" />
</label>
</li>
<li>
<label>
Noise Texture?
<input type="checkbox" onclick="toggle(2, this); void(0);" />
</label>
</li>
<li>
<label>Modulation Texture?
<input type="checkbox" onclick="toggle(3, this); void(0);" />
</label>
</li>
<li>
<label>Environment Map?
<input type="checkbox" onclick="toggle(4, this); void(0);" />
</label>
</li>
</ul>
<br />
<b>Background Color (0-255, rgb):</b>
<p></p>
<form onSubmit="updateClearColor(); void(0); return false;">
<input type="text" id="bg-red" size="3" maxLength="3" value="0" />
<input type="text" id="bg-green" size="3" maxLength="3" value="0" />
<input type="text" id="bg-blue" size="3" maxLength="3" value="0" />
<input type="submit" value="Go!" />
</form>
<br />
<b>Controls:</b>
Drag to rotate. Mousewheel to zoom. 'q' to exit all options.
<p id="loading">Loading...</p>
</div>
<!-- The option panels. -->
<div id="controls">
<div id="opt-bubble" class="option">
<a href="#close" class="closer">close</a>
</div>
<div id="tex-iridescence" class="option">
<a href="#close" class="closer">close</a>
</div>
<div id="tex-perlin" class="option">
<a href="#close" class="closer">close</a>
</div>
<div id="tex-modulation" class="option">
<a href="#close" class="closer">close</a>
</div>
<div id="tex-environment" class="option">
<img src="cubemap/posx.png" />
<img src="cubemap/negx.png" />
<img src="cubemap/posy.png" />
<img src="cubemap/negy.png" />
<img src="cubemap/posz.png" />
<img src="cubemap/negz.png" />
<p>Using environment map:
<a id="toggle-env" href="#toggle-env">On. Turn off?</a>
</p>
<a href="#close" class="closer">close</a>
</div>
</div>
<!-- Define the vertex shader -->
<textarea id="shader" name="shader" style="display: none;">
#ifdef GL_ES
precision highp float;
#endif
attribute vec3 position;
attribute vec3 normal;
attribute vec2 texCoord0;
attribute float texCoord1;
varying vec4 v_position;
varying vec2 v_uv;
varying vec2 v_params;
varying vec3 v_reflected;
uniform mat4 worldViewProjection;
uniform mat4 world;
uniform mat4 worldInverseTranspose;
uniform vec3 eye;
uniform vec4 thickness_params;
uniform float timer;
uniform float bubbleNumber;
uniform float distortion;
void main() {
vec4 object_position = vec4(position.xyz, 1);
vec4 object_normal = vec4(normal.xyz, 0);
// texCoord1 is the sampled value from the modulation texture.
float modulation_factor = sin(timer + bubbleNumber) *
(distortion * texCoord1);
vec4 unit_normal = normalize(object_normal);
object_position.xyz += unit_normal.xyz * modulation_factor;
vec3 tmp_normal = normalize((worldInverseTranspose * object_normal).xyz);
vec4 tmp_position = world * object_position;
vec4 center = world * vec4(0, 0, 0, 1);
vec3 eye_vector = normalize(tmp_position.xyz - eye);
// Absolute value for the back faces.
float cos_i = abs(dot(tmp_normal, eye_vector));
float thickness = exp(-(tmp_position.y - center.y) * thickness_params.x) *
thickness_params.y / 2.0;
gl_Position = worldViewProjection * object_position;
v_position = world * object_position;
v_uv = texCoord0;
v_params = vec2(cos_i, thickness);
v_reflected = reflect(eye_vector, tmp_normal);
}
// #o3d SplitMarker
#ifdef GL_ES
precision highp float;
#endif
uniform sampler2D noise_sampler;
uniform sampler2D iridescence_sampler;
uniform samplerCube env_sampler;
uniform vec4 thickness_params;
uniform bool useCubeMap;
varying vec4 v_position;
varying vec2 v_uv;
varying vec2 v_params;
varying vec3 v_reflected;
void main() {
// Noise: remap [0.. 1] to [-0.5, -.5]
float noise = (texture2D(noise_sampler, v_uv).x - 0.5);
float thickness = v_params.y - noise * thickness_params.z;
float cos_i = v_params.x;
// Modulate iridescence color by the environment looked up along the
// reflected ray.
vec4 color = texture2D(iridescence_sampler, vec2(cos_i, thickness));
if (useCubeMap) {
color.xyz *= textureCube(env_sampler, v_reflected).xyz;
}
// Modulate by per-face attenuation
color.rgb *= thickness_params.w;
gl_FragColor = color;
}
</textarea>
</body>
</html>
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