1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
|
/*
* 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.
*/
/**
* @fileoverview This file contains utility functions for o3d running on
* top of webgl. The function o3djs.webgl.makeClients replaces the
* function o3djs.util.makeClients.
*/
o3djs.provide('o3djs.webgl');
o3djs.require('o3djs.util');
/**
* A Module with various utilities.
* @namespace
*/
o3djs.webgl = o3djs.webgl || {};
/**
* Finds all divs with an id that starts with "o3d" and inits a canvas
* under them with o3d client object and the o3d namespace.
*/
o3djs.webgl.makeClients = function(callback,
opt_features,
opt_requiredVersion,
opt_failureCallback,
opt_id,
opt_tag) {
opt_failureCallback = opt_failureCallback || o3djs.webgl.informPluginFailure;
var clientElements = [];
var elements = o3djs.util.getO3DContainerElements(opt_id, opt_tag);
for (var ee = 0; ee < elements.length; ++ee) {
var element = elements[ee];
var features = opt_features;
if (!features) {
var o3d_features = element.getAttribute('o3d_features');
if (o3d_features) {
features = o3d_features;
} else {
features = '';
}
}
var objElem = o3djs.webgl.createClient(element, features);
clientElements.push(objElem);
}
callback(clientElements);
};
/**
* Creates a canvas under the given parent element and an o3d.Client
* under that.
*/
o3djs.webgl.createClient = function(element, opt_features) {
opt_features = opt_features || '';
// TODO(petersont): Not sure what to do with the features object.
var canvas;
canvas = document.createElement('canvas');
canvas.setAttribute('width', element.getAttribute('width'));
canvas.setAttribute('height', element.getAttribute('height'));
canvas.client = new o3d.Client;
canvas.o3d = o3d;
var gl;
try {gl = canvas.getContext("experimental-webgl") } catch(e) { }
if (!gl)
try {gl = canvas.getContext("moz-webgl") } catch(e) { }
if (!gl) {
alert("No WebGL context found");
return null;
}
canvas.client.gl = gl;
element.appendChild(canvas);
return canvas;
};
|
