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
|
/*
* SVG Salamander
* Copyright (c) 2004, Mark McKay
* 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.
*
* 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 HOLDER 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.
*
* Mark McKay can be contacted at mark@kitfox.com. Salamander and other
* projects can be found at http://www.kitfox.com
*
* Created on April 1, 2004, 6:41 AM
*/
package com.kitfox.svg.composite;
import java.awt.*;
import java.awt.image.*;
/**
* @author Mark McKay
* @author <a href="mailto:mark@kitfox.com">Mark McKay</a>
*/
public class AdobeCompositeContext implements CompositeContext
{
final int compositeType;
final float extraAlpha;
float[] rgba_src = new float[4];
float[] rgba_dstIn = new float[4];
float[] rgba_dstOut = new float[4];
/** Creates a new instance of AdobeCompositeContext */
public AdobeCompositeContext(int compositeType, float extraAlpha)
{
this.compositeType = compositeType;
this.extraAlpha = extraAlpha;
rgba_dstOut[3] = 1f;
}
public void compose(Raster src, Raster dstIn, WritableRaster dstOut)
{
int width = src.getWidth();
int height = src.getHeight();
for (int j = 0; j < height; j++)
{
for (int i = 0; i < width; i++)
{
src.getPixel(i, j, rgba_src);
dstIn.getPixel(i, j, rgba_dstIn);
//Ignore transparent pixels
if (rgba_src[3] == 0)
{
// dstOut.setPixel(i, j, rgba_dstIn);
continue;
}
float alpha = rgba_src[3];
switch (compositeType)
{
default:
case AdobeComposite.CT_NORMAL:
rgba_dstOut[0] = rgba_src[0] * alpha + rgba_dstIn[0] * (1f - alpha);
rgba_dstOut[1] = rgba_src[1] * alpha + rgba_dstIn[1] * (1f - alpha);
rgba_dstOut[2] = rgba_src[2] * alpha + rgba_dstIn[2] * (1f - alpha);
break;
case AdobeComposite.CT_MULTIPLY:
rgba_dstOut[0] = rgba_src[0] * rgba_dstIn[0] * alpha + rgba_dstIn[0] * (1f - alpha);
rgba_dstOut[1] = rgba_src[1] * rgba_dstIn[1] * alpha + rgba_dstIn[1] * (1f - alpha);
rgba_dstOut[2] = rgba_src[2] * rgba_dstIn[2] * alpha + rgba_dstIn[2] * (1f - alpha);
break;
}
}
}
}
public void dispose() {
}
}
|
