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authorhwc4872012-03-06 16:03:26 -0800
committerhwc4872012-03-06 16:03:26 -0800
commit855e8727b147771ff7b05e71bed481e65fe4b6b0 (patch)
tree60d7f091fcf0870495aeaa63748492dbd558619d /js/lib/geom/circle.js
parent1207735f05f202b5bdc5f70c73445f8e0934a227 (diff)
parent4f498b43264327f5886e0370bd3536453d47570a (diff)
downloadninja-855e8727b147771ff7b05e71bed481e65fe4b6b0.tar.gz
Merge branch 'master' of github.com:Motorola-Mobility/ninja-internal into integration
Conflicts: js/preloader/Preloader.js
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1/* <copyright>
2This file contains proprietary software owned by Motorola Mobility, Inc.<br/>
3No rights, expressed or implied, whatsoever to this software are provided by Motorola Mobility, Inc. hereunder.<br/>
4(c) Copyright 2011 Motorola Mobility, Inc. All Rights Reserved.
5</copyright> */
6
7var GeomObj = require("js/lib/geom/geom-obj").GeomObj;
8var ShapePrimitive = require("js/lib/geom/shape-primitive").ShapePrimitive;
9var MaterialsModel = require("js/models/materials-model").MaterialsModel;
10///////////////////////////////////////////////////////////////////////
11// Class GLCircle
12// GL representation of a circle.
13// Derived from class GLGeomObj
14// The position and dimensions of the stroke, fill, and inner Radius should be in pixels
15///////////////////////////////////////////////////////////////////////
16var Circle = function GLCircle() {
17
18 this.init = function( world, xOffset, yOffset, width, height, strokeSize, strokeColor, fillColor, innerRadius, strokeMaterial, fillMaterial, strokeStyle) {
19 ///////////////////////////////////////////////////////////////////////
20 // Instance variables
21 ///////////////////////////////////////////////////////////////////////
22 this._width = 2.0;
23 this._height = 2.0;
24 this._xOffset = 0;
25 this._yOffset = 0;
26
27 this._radius = 2.0;
28 this._strokeWidth = 0.25;
29 this._innerRadius = 0;
30
31 this._ovalHeight = this._ovalHeight = 2.0 * this._radius;
32
33 this._strokeStyle = "Solid";
34
35 this._aspectRatio = 1.0;
36
37 if (arguments.length > 0) {
38 this._width = width;
39 this._height = height;
40 this._xOffset = xOffset;
41 this._yOffset = yOffset;
42
43 this._strokeWidth = strokeSize;
44 this._innerRadius = innerRadius;
45 if (strokeColor) this._strokeColor = strokeColor;
46 if (fillColor) this._fillColor = fillColor;
47
48 this._strokeStyle = strokeStyle;
49 }
50
51 this.m_world = world;
52
53 if(strokeMaterial){
54 this._strokeMaterial = strokeMaterial;
55 } else {
56 this._strokeMaterial = MaterialsModel.exportFlatMaterial();
57 }
58
59 if(fillMaterial) {
60 this._fillMaterial = fillMaterial;
61 } else {
62 this._fillMaterial = MaterialsModel.exportFlatMaterial();
63 }
64 };
65
66 ///////////////////////////////////////////////////////////////////////
67 // Property Accessors
68 ///////////////////////////////////////////////////////////////////////
69 this.getStrokeWidth = function() {
70 return this._strokeWidth;
71 };
72
73 this.setStrokeWidth = function(w) {
74 this._strokeWidth = w;
75 };
76
77 this.getStrokeMaterial = function() {
78 return this._strokeMaterial;
79 };
80
81 this.setStrokeMaterial = function(m) {
82 this._strokeMaterial = m;
83 };
84
85 this.getFillMaterial = function() {
86 return this._fillMaterial;
87 };
88
89 this.setFillMaterial = function(m) {
90 this._fillMaterial = m;
91 };
92
93 this.getRadius = function() {
94 return this._radius;
95 };
96
97 this.setRadius = function(r) {
98 this._radius = r;
99 };
100
101 this.getWorld = function() {
102 return this._world;
103 };
104
105 this.setWorld = function(w) {
106 this._world = w;
107 };
108
109 this.getInnerRadius = function() {
110 return this._innerRadius;
111 };
112
113 this.setInnerRadius = function(r) {
114 this._innerRadius = r;
115 };
116
117 this.getStrokeStyle = function() {
118 return this._strokeStyle;
119 };
120 this.setStrokeStyle = function(s) {
121 this._strokeStyle = s;
122 };
123
124 this.getWidth = function() {
125 return this._width;
126 };
127
128 this.setWidth = function(w) {
129 this._width = w;
130 };
131
132 this.getHeight = function() {
133 return this._height;
134 };
135
136 this.setHeight = function(h) {
137 this._height = h;
138 };
139
140 this.geomType = function() {
141 return this.GEOM_TYPE_CIRCLE;
142 };
143
144 ///////////////////////////////////////////////////////////////////////
145 // Methods
146 ///////////////////////////////////////////////////////////////////////
147
148 ///////////////////////////////////////////////////////////////////////
149 // update the "color of the material
150 this.getFillColor = function()
151 {
152 return this._fillColor;
153 }
154
155// this.setFillColor = function(c)
156// {
157// this._fillColor = c;
158// }
159
160 this.getStrokeColor = function()
161 {
162 return this._strokeColor;
163 }
164
165// this.setStrokeColor = function(c)
166// {
167// this._strokeColor = c;
168// }
169 ///////////////////////////////////////////////////////////////////////
170
171 this.buildBuffers = function() {
172 // get the world
173 var world = this.getWorld();
174 if (!world) throw( "null world in buildBuffers" );
175
176 if (!world._useWebGL) return;
177
178 // make sure RDGE has the correct context
179 g_Engine.setContext( world.getCanvas().rdgeid );
180
181 // create the gl buffer
182 var gl = world.getGLContext();
183
184 // determine the number of triangles to generate
185 var nTriangles = 60; // yes, we will do better than this
186
187 // get the normalized device coordinates (NDC) for
188 // all position and dimensions.
189 var vpw = world.getViewportWidth(), vph = world.getViewportHeight();
190 var xNDC = 2*this._xOffset/vpw, yNDC = 2*this._yOffset/vph,
191 xRadNDC = this._width/vpw, yRadNDC = this._height/vph,
192 xStrokeNDC = 2*this._strokeWidth/vpw, yStrokeNDC = 2*this._strokeWidth/vph,
193 xInnRadNDC = this._innerRadius*xRadNDC, yInnRadNDC = this._innerRadius*yRadNDC;
194
195 var aspect = world.getAspect();
196 var zn = world.getZNear(), zf = world.getZFar();
197 var t = zn * Math.tan(world.getFOV() * Math.PI / 360.0),
198 b = -t,
199 r = aspect*t,
200 l = -r;
201
202 // calculate the object coordinates from their NDC coordinates
203 var z = -world.getViewDistance();
204
205 // get the position of the origin
206 var x = -z*(r-l)/(2.0*zn)*xNDC,
207 y = -z*(t-b)/(2.0*zn)*yNDC;
208
209 // get the x and y radii
210 var xRad = -z*(r-l)/(2.0*zn)*xRadNDC,
211 yRad = -z*(t-b)/(2.0*zn)*yRadNDC;
212
213 // save the overall dimensions to be used in the uv calculations
214 this._ovalWidth = xRad; this._ovalHeight = yRad;
215
216 // get the x & y stroke size
217 var xStroke = -z*(r-l)/(2.0*zn)*xStrokeNDC,
218 yStroke = -z*(t-b)/(2.0*zn)*yStrokeNDC;
219
220 // get the inner radius
221 var xInnRad = -z*(r-l)/(2.0*zn)*xInnRadNDC,
222 yInnRad = -z*(t-b)/(2.0*zn)*yInnRadNDC;
223
224 // get a matrix to rotate a point around the circle
225 var angle = 2.0 * Math.PI/Number(nTriangles);
226 var mat = Matrix.RotationZ( angle );
227 var reverseRotMat = Matrix.RotationZ( -angle );
228
229 // calculate matrices to scale the circle and stroke to fit the bounds of the ellipse
230 var strokeScaleMat = Matrix.I(4);
231 strokeScaleMat[0] = xRad;
232 strokeScaleMat[5] = yRad;
233
234 var fillScaleMat = Matrix.I(4);
235 fillScaleMat[0] = xRad - xStroke;
236 fillScaleMat[5] = yRad - yStroke;
237
238 var innerRadiusScaleMat = Matrix.I(4);
239 innerRadiusScaleMat[0] = xInnRad;
240 innerRadiusScaleMat[5] = yInnRad;
241
242 var innerStrokeScaleMat = Matrix.I(4);