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
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
|
/*
Copyright 2006 Jerry Huxtable
Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at
http://www.apache.org/licenses/LICENSE-2.0
Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
*/
package com.jhlabs.image;
import java.awt.image.*;
import java.awt.geom.*;
/**
* A filter which produces motion blur the slow, but higher-quality way.
*/
public class MotionBlurFilter extends AbstractBufferedImageOp {
public final static int LINEAR = 0;
public final static int RADIAL = 1;
public final static int ZOOM = 2;
private float angle = 0.0f;
private float falloff = 1.0f;
private float distance = 1.0f;
private float zoom = 0.0f;
private float rotation = 0.0f;
private boolean wrapEdges = false;
public MotionBlurFilter() {
}
public void setAngle( float angle ) {
this.angle = angle;
}
public float getAngle() {
return angle;
}
public void setDistance( float distance ) {
this.distance = distance;
}
public float getDistance() {
return distance;
}
public void setRotation( float rotation ) {
this.rotation = rotation;
}
public float getRotation() {
return rotation;
}
public void setZoom( float zoom ) {
this.zoom = zoom;
}
public float getZoom() {
return zoom;
}
public void setWrapEdges(boolean wrapEdges) {
this.wrapEdges = wrapEdges;
}
public boolean getWrapEdges() {
return wrapEdges;
}
public BufferedImage filter( BufferedImage src, BufferedImage dst ) {
int width = src.getWidth();
int height = src.getHeight();
if ( dst == null )
dst = createCompatibleDestImage( src, null );
int[] inPixels = new int[width*height];
int[] outPixels = new int[width*height];
getRGB( src, 0, 0, width, height, inPixels );
float sinAngle = (float)Math.sin(angle);
float cosAngle = (float)Math.cos(angle);
float total;
int cx = width/2;
int cy = height/2;
int index = 0;
float imageRadius = (float)Math.sqrt( cx*cx + cy*cy );
float translateX = (float)(distance * Math.cos( angle ));
float translateY = (float)(distance * -Math.sin( angle ));
float maxDistance = distance + Math.abs(rotation*imageRadius) + zoom*imageRadius;
int repetitions = (int)maxDistance;
AffineTransform t = new AffineTransform();
Point2D.Float p = new Point2D.Float();
for (int y = 0; y < height; y++) {
for (int x = 0; x < width; x++) {
int a = 0, r = 0, g = 0, b = 0;
int count = 0;
for (int i = 0; i < repetitions; i++) {
int newX = x, newY = y;
float f = (float)i/repetitions;
p.x = x;
p.y = y;
t.setToIdentity();
t.translate( cx+f*translateX, cy+f*translateY );
float s = 1-zoom*f;
t.scale( s, s );
if ( rotation != 0 )
t.rotate( -rotation*f );
t.translate( -cx, -cy );
t.transform( p, p );
newX = (int)p.x;
newY = (int)p.y;
if (newX < 0 || newX >= width) {
if ( wrapEdges )
newX = ImageMath.mod( newX, width );
else
break;
}
if (newY < 0 || newY >= height) {
if ( wrapEdges )
newY = ImageMath.mod( newY, height );
else
break;
}
count++;
int rgb = inPixels[newY*width+newX];
a += (rgb >> 24) & 0xff;
r += (rgb >> 16) & 0xff;
g += (rgb >> 8) & 0xff;
b += rgb & 0xff;
}
if (count == 0) {
outPixels[index] = inPixels[index];
} else {
a = PixelUtils.clamp((int)(a/count));
r = PixelUtils.clamp((int)(r/count));
g = PixelUtils.clamp((int)(g/count));
b = PixelUtils.clamp((int)(b/count));
outPixels[index] = (a << 24) | (r << 16) | (g << 8) | b;
}
index++;
}
}
setRGB( dst, 0, 0, width, height, outPixels );
return dst;
}
public String toString() {
return "Blur/Motion Blur...";
}
}
|
