01: /*
02: * $RCSfile: DefaultRenderMethod.java,v $
03: *
04: * Copyright 1999-2008 Sun Microsystems, Inc. All Rights Reserved.
05: * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
06: *
07: * This code is free software; you can redistribute it and/or modify it
08: * under the terms of the GNU General Public License version 2 only, as
09: * published by the Free Software Foundation. Sun designates this
10: * particular file as subject to the "Classpath" exception as provided
11: * by Sun in the LICENSE file that accompanied this code.
12: *
13: * This code is distributed in the hope that it will be useful, but WITHOUT
14: * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
15: * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
16: * version 2 for more details (a copy is included in the LICENSE file that
17: * accompanied this code).
18: *
19: * You should have received a copy of the GNU General Public License version
20: * 2 along with this work; if not, write to the Free Software Foundation,
21: * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
22: *
23: * Please contact Sun Microsystems, Inc., 4150 Network Circle, Santa Clara,
24: * CA 95054 USA or visit www.sun.com if you need additional information or
25: * have any questions.
26: *
27: * $Revision: 1.7 $
28: * $Date: 2008/02/28 20:17:20 $
29: * $State: Exp $
30: */
31:
32: package javax.media.j3d;
33:
34: /**
35: * The RenderMethod interface is used to create various ways to render
36: * different geometries.
37: */
38:
39: class DefaultRenderMethod implements RenderMethod {
40:
41: boolean geometryIsLocked = false;
42:
43: /**
44: * The actual rendering code for this RenderMethod
45: */
46: public boolean render(RenderMolecule rm, Canvas3D cv,
47: RenderAtomListInfo ra, int dirtyBits) {
48:
49: boolean isVisible = false; // True if any of the RAs is visible.
50:
51: while (ra != null) {
52: if (cv.ra == ra.renderAtom) {
53: if (cv.raIsVisible) {
54: cv.updateState(dirtyBits);
55: ra
56: .geometry()
57: .execute(
58: cv,
59: ra.renderAtom,
60: rm.isNonUniformScale,
61: rm.useAlpha,
62: rm.alpha,
63: cv.screen.screen,
64: rm.textureBin.attributeBin.ignoreVertexColors);
65: isVisible = true;
66: }
67: } else {
68: if (!VirtualUniverse.mc.viewFrustumCulling
69: || ra.renderAtom.localeVwcBounds
70: .intersect(cv.viewFrustum)) {
71: cv.raIsVisible = true;
72: cv.updateState(dirtyBits);
73: ra
74: .geometry()
75: .execute(
76: cv,
77: ra.renderAtom,
78: rm.isNonUniformScale,
79: rm.useAlpha,
80: rm.alpha,
81: cv.screen.screen,
82: rm.textureBin.attributeBin.ignoreVertexColors);
83: isVisible = true;
84: } else {
85: cv.raIsVisible = false;
86: }
87: cv.ra = ra.renderAtom;
88: }
89: ra = ra.next;
90: }
91:
92: return isVisible;
93:
94: }
95:
96: }
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