01: /*
02: * $RCSfile: DepthComponentIntRetained.java,v $
03: *
04: * Copyright 1998-2008 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: 1.5 $
28: * $Date: 2008/02/28 20:17:21 $
29: * $State: Exp $
30: */
31:
32: package javax.media.j3d;
33:
34: /**
35: * A 2D array of depth (Z) values in integer format. Values are in the
36: * range [0,(2**N)-1], where N is the pixel depth of the Z buffer.
37: */
38:
39: class DepthComponentIntRetained extends DepthComponentRetained {
40: int depthData[];
41:
42: /**
43: * Constructs a new integer depth (z-buffer) component object with the
44: * specified width and height.
45: * @param width the width of the array of depth values
46: * @param height the height of the array of depth values
47: */
48: void initialize(int width, int height) {
49: type = DEPTH_COMPONENT_TYPE_INT;
50: depthData = new int[width * height];
51: this .width = width;
52: this .height = height;
53: }
54:
55: /**
56: * Copies the specified depth data to this object.
57: * @param depthData array of ints containing the depth data
58: */
59: void setDepthData(int[] depthData) {
60: int i;
61: for (i = 0; i < depthData.length; i++)
62: this .depthData[i] = depthData[i];
63: }
64:
65: /**
66: * Copies the depth data from this object to the specified array.
67: * @param depthData array of ints that will receive a copy of
68: * the depth data
69: */
70: void getDepthData(int[] depthData) {
71: int i;
72:
73: for (i = 0; i < this .depthData.length; i++)
74: depthData[i] = this .depthData[i];
75: }
76:
77: /**
78: * retrieve depth data from input buffer
79: */
80: final void retrieveDepth(int[] buf, int wRead, int hRead) {
81: int srcOffset, dstOffset, i;
82:
83: // Yup -> Ydown
84: for (srcOffset = (hRead - 1) * wRead, dstOffset = 0, i = 0; i < hRead; i++, srcOffset -= wRead, dstOffset += width) {
85:
86: System.arraycopy(buf, srcOffset, depthData, dstOffset,
87: wRead);
88: }
89: }
90: }
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