aboutsummaryrefslogtreecommitdiff
path: root/js/helper-classes/RDGE/src/core/script/camera.js
diff options
context:
space:
mode:
authorPierre Frisch2011-12-22 07:25:50 -0800
committerValerio Virgillito2012-01-27 11:18:17 -0800
commitb89a7ee8b956c96a1dcee995ea840feddc5d4b27 (patch)
tree0f3136ab0ecdbbbed6a83576581af0a53124d6f1 /js/helper-classes/RDGE/src/core/script/camera.js
parent2401f05d1f4b94d45e4568b81fc73e67b969d980 (diff)
downloadninja-b89a7ee8b956c96a1dcee995ea840feddc5d4b27.tar.gz
First commit of Ninja to ninja-internal
Signed-off-by: Valerio Virgillito <rmwh84@motorola.com>
Diffstat (limited to 'js/helper-classes/RDGE/src/core/script/camera.js')
-rw-r--r--js/helper-classes/RDGE/src/core/script/camera.js251
1 files changed, 251 insertions, 0 deletions
diff --git a/js/helper-classes/RDGE/src/core/script/camera.js b/js/helper-classes/RDGE/src/core/script/camera.js
new file mode 100644
index 00000000..caff232b
--- /dev/null
+++ b/js/helper-classes/RDGE/src/core/script/camera.js
@@ -0,0 +1,251 @@
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/*
7 * camera class
8 */
9camera = function() {
10 this.proj = mat4.identity();
11 this.view = mat4.identity();
12 this.world = mat4.identity();
13 this.viewProj = mat4.identity();
14 this.invViewProj = mat4.identity();
15 this.frustum = [];
16 this.frustumPts = [];
17 this.controller = null;
18
19 this.setPerspective = function(fov, aratio, near, far)
20 {
21 this.ortho = null;
22 this.persp = {};
23 this.persp.fov = fov;
24 this.persp.aratio = aratio;
25 this.persp.near = near;
26 this.persp.far = far;
27 this.proj = mat4.perspective(fov, aratio, near, far);
28 this.recalc();
29 }
30
31 this.reset = function() {
32 this.world = mat4.identity();
33 this.recalc();
34 }
35
36 this.copy = function(cam) {
37 mat4.inplace_copy(this.view, cam.view);
38 mat4.inplace_copy(this.world, cam.world);
39 mat4.inplace_copy(this.proj, cam.proj);
40 mat4.inplace_copy(this.viewProj, cam.viewProj);
41 mat4.inplace_copy(this.invViewProj, cam.invViewProj);
42 this.frustum = cam.frustum.slice();
43 this.frustumPts = cam.frustumPts.slice();
44 }
45
46 this.recalc = function() {
47 // update frustum planes
48 this.frustum = [];
49 var vp = this.viewProj;
50
51 normalizePlane = function( p ) {
52 var len = vec3.length( p );
53 if( Math.abs( 1.0 - len ) > 0.001 ) {
54 p[0] /= len;
55 p[1] /= len;
56 p[2] /= len;
57 p[3] /= len;
58 }
59 return p;
60 }
61
62 /* This is the old way
63 var t = this.persp.near * Math.tan(0.017453292519943295769236 * this.persp.fov * 0.5);
64 var r = t * this.persp.aratio;
65 var u = t;
66 var l = -r;
67 var b = -u;
68
69 tview = mat4.transpose(this.view);
70 this.frustum.push( normalizePlane( mat4.transformPoint(tview, [this.persp.near, 0.0, l, 0.0] ) ) ); // left
71 this.frustum.push( normalizePlane( mat4.transformPoint(tview, [-this.persp.near, 0.0, -r, 0.0] ) ) ); // right
72 this.frustum.push( normalizePlane( mat4.transformPoint(tview, [0.0, this.persp.near, b, 0.0] ) ) ); // bottom
73 this.frustum.push( normalizePlane( mat4.transformPoint(tview, [0.0, -this.persp.near, -u, 0.0] ) ) ); // top
74 this.frustum.push( normalizePlane( mat4.transformPoint(tview, [0.0, 0.0, -1.0, -this.persp.near] ) ) ); // near
75 this.frustum.push( normalizePlane( mat4.transformPoint(tview, [0.0, 0.0, 1.0, this.persp.far] ) ) ); // far
76 */
77 var l = normalizePlane( [vp[3] + vp[0], vp[7] + vp[4], vp[11] + vp[8], vp[15]+vp[12]] );
78 var r = normalizePlane( [vp[3] - vp[0], vp[7] - vp[4], vp[11] - vp[8], vp[15]-vp[12]] );
79 var t = normalizePlane( [vp[3] - vp[1], vp[7] - vp[5], vp[11] - vp[9], vp[15]-vp[13]] );
80 var b = normalizePlane( [vp[3] + vp[1], vp[7] + vp[5], vp[11] + vp[9], vp[15]+vp[13]] );
81 var n = normalizePlane( [vp[3] + vp[2], vp[7] + vp[6], vp[11] + vp[10], vp[15]+vp[14]] );
82 var f = normalizePlane( [vp[3] - vp[2], vp[7] - vp[6], vp[11] - vp[10], vp[15]-vp[14]] );
83
84 this.frustum.push(l);
85 this.frustum.push(r);
86 this.frustum.push(t);
87 this.frustum.push(b);
88 this.frustum.push(n);
89 this.frustum.push(f);
90
91 // update frustum points
92 this.frustumPts = [];
93 var invvp = this.viewProj;
94 this.frustumPts.push( mat4.transformPoint( invvp, [-1,-1,-1] ) );
95 this.frustumPts.push( mat4.transformPoint( invvp, [-1,1,-1] ) );
96 this.frustumPts.push( mat4.transformPoint( invvp, [1,1,-1] ) );
97 this.frustumPts.push( mat4.transformPoint( invvp, [1,-1,-1] ) );
98 this.frustumPts.push( mat4.transformPoint( invvp, [-1,-1,1] ) );
99 this.frustumPts.push( mat4.transformPoint( invvp, [-1,1,1] ) );
100 this.frustumPts.push( mat4.transformPoint( invvp, [1,1,1] ) );
101 this.frustumPts.push( mat4.transformPoint( invvp, [1,-1,1] ) );
102 };
103
104 this.setWorld = function(m) {
105 this.world = m;
106 this.view = mat4.inverse(m);
107 this.viewProj = mat4.mul( this.view, this.proj );
108 this.invViewProj = mat4.inverse(this.viewProj);
109 this.recalc();
110 }
111
112 this.setView = function(m) {
113 this.view = m;
114 this.world = mat4.inverse(m);
115 this.viewProj = mat4.mul( this.view, this.proj );
116 this.invViewProj = mat4.inverse(this.viewProj);
117 this.recalc();
118 }
119
120 this.setLookAt = function(eyePos, targetPos, upVec) {
121 this.setWorld( mat4.lookAt(eyePos, targetPos, upVec) );
122 //this.recalc();
123 };
124
125 this.setPerspective = function(fov, aratio, near, far) {
126 this.ortho = null;
127 this.persp = {};
128 this.persp.fov = fov;
129 this.persp.aratio = aratio;
130 this.persp.near = near;
131 this.persp.far = far;
132 this.proj = mat4.perspective(fov, aratio, near, far);
133 this.recalc();
134 }
135
136 this.setOrthographic = function( l, r, t, b, n, f ) {
137 this.persp = null;
138 this.ortho = {};
139 this.ortho.left = l;
140 this.ortho.right = r;
141 this.ortho.top = t;
142 this.ortho.bottom = b;
143 this.ortho.near = n;
144 this.ortho.far = f;
145 this.proj = mat4.orthographic(l, r, t, b, n, f);
146 this.recalc();
147 }
148
149 this.onResize = function(x, y, width, height) {
150 if( this.persp ) {
151 this.setPerspective(this.persp.fov, width / height, this.persp.near, this.persp.far);
152 }
153 if( this.ortho ) {
154 this.setOrthographic(x, x + width, y, y + height, this.ortho.near, this.ortho.far);
155 }
156 }
157
158 this.zNear = function() {
159 if( this.persp ) {
160 return this.persp.near;
161 }
162
163 if( this.ortho ) {
164 return this.ortho.near;
165 }
166
167 return 0.0;
168 }
169
170 this.zFar = function() {
171 if( this.persp ) {
172 return this.persp.far;
173 }
174
175 if( this.ortho ) {
176 return this.ortho.far;
177 }
178
179 return 0.0;
180 }
181
182 // this is used by ambient occlusion...
183 this.getFTR = function() {
184 var fovyRad = (this.persp.fov * 0.5) * Math.PI / 180.0;
185 return [
186 Math.tan(fovyRad) * this.persp.far,
187 Math.tan(fovyRad / this.persp.aratio) * this.persp.far,
188 this.persp.far ];
189 }
190
191 this.attachCameraToNode = function( node )
192 {
193 this.controller = node;
194 }
195}
196
197
198/** Camera Manager
199 * This class is used to manage the active camera. It provides functionality
200 * for getting and setting the active camera, as well as providing stack operations
201 * to switch to and from multiple cameras.
202 */
203cameraManager = function() {
204 this.stack = [];
205
206 /* Set the active camera.
207 * This function sets the active camera to the given camera.
208 */
209 this.setActiveCamera = function(c) {
210 // pop the active camera off the stack.