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/Users/lyon/j4p/src/sound/filterDesign/HsCanvas.java
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1 package sound.filterDesign;
2
3 // Decompiled by Jad v1.5.8c. Copyright 2001 Pavel Kouznetsov.
4 // Jad home page: http://www.geocities.com/kpdus/jad.html
5 // Decompiler options: packimports(3)
6 // Source File Name: HsCanvas.java
7
8 import java.awt.*;
9 import java.awt.event.MouseEvent;
10 import java.awt.event.MouseListener;
11 import java.awt.event.MouseMotionListener;
12 import java.awt.image.MemoryImageSource;
13 import java.io.Serializable;
14 import java.util.Vector;
15
16 public class HsCanvas extends Canvas
17 implements MouseListener, MouseMotionListener, Serializable {
18
19 public HsCanvas() {
20 setCursor(new Cursor(1));
21 setFont(new Font("TimesNewRoman", 1, 16));
22 setBackground(Color.white);
23 setForeground(Color.black);
24 addMouseListener(this);
25 addMouseMotionListener(this);
26 xMouse = yMouse = 0;
27 }
28
29 public void paint(Graphics g) {
30 update(g);
31 }
32
33 public void update(Graphics g) {
34 g.drawImage(boxImage, 0, 0, this);
35 g.setColor(getBackground());
36 g.fillRect(0, height, width + 20, 22);
37 g.setColor(getForeground());
38 if (xMouse >= 0 &&
39 yMouse >= 0 &&
40 xMouse < width &&
41 yMouse < height)
42 g.drawString("H(s)= " + mag[xMouse + width * yMouse],
43 5,
44 height + 18);
45 }
46
47 public void mouseDragged(MouseEvent mouseevent) {
48 }
49
50 public void mouseMoved(MouseEvent mouseevent) {
51 xMouse = mouseevent.getX();
52 yMouse = mouseevent.getY();
53 repaint();
54 }
55
56 public void mouseClicked(MouseEvent mouseevent) {
57 }
58
59 public void mouseEntered(MouseEvent mouseevent) {
60 }
61
62 public void mouseExited(MouseEvent mouseevent) {
63 }
64
65 public void mousePressed(MouseEvent mouseevent) {
66 }
67
68 public void mouseReleased(MouseEvent mouseevent) {
69 }
70
71 public int findColor(double d) {
72 int i;
73 if (d < 1.0D)
74 i = (int) (d * 200D) + 56;
75 else if (d < 5D) {
76 i = (int) (d * 40D) + 56;
77 i <<= 8;
78 } else if (d > 20D) {
79 i = 0xffffff;
80 } else {
81 i = (int) (d * 10D) + 56;
82 i <<= 16;
83 }
84 return i;
85 }
86
87 public void calculate() {
88 for (int i = 0; i < width; i++) {
89 double d = ((double) ((i - width / 2) * 2) * xmax) /
90 (double) width;
91 for (int j = 0; j < height; j++) {
92 double d1 = ((double) ((height / 2 - j) * 2) * ymax) /
93 (double) height;
94 double d2 = 1.0D;
95 for (int k = 0; k < zeros.size(); k++) {
96 double d3 = ((Zero) zeros.elementAt(k)).getReal();
97 double d5 = ((Zero) zeros.elementAt(k)).getImag();
98 d2 *= (d3 - d) * (d3 - d) + (d5 - d1) * (d5 - d1);
99 if (d5 != 0.0D) {
100 d5 = -d5;
101 d2 *= (d3 - d) * (d3 - d) + (d5 - d1) * (d5 - d1);
102 }
103 }
104
105 for (int l = 0; l < poles.size(); l++) {
106 double d4 = ((Pole) poles.elementAt(l)).getReal();
107 double d6 = ((Pole) poles.elementAt(l)).getImag();
108 d2 /= (d4 - d) * (d4 - d) + (d6 - d1) * (d6 - d1);
109 if (d6 != 0.0D) {
110 d6 = -d6;
111 d2 /= (d4 - d) * (d4 - d) + (d6 - d1) * (d6 - d1);
112 }
113 }
114
115 d2 = Math.sqrt(d2);
116 mag[i + j * width] = d2;
117 result[i + j * width] = 0xff000000 | findColor(d2);
118 }
119
120 }
121
122 }
123
124 public void newInfo(Vector vector,
125 Vector vector1,
126 Dimension dimension,
127 double d,
128 double d1) {
129 xmax = d;
130 ymax = d1;
131 width = dimension.width;
132 height = dimension.height;
133 if (height % 2 != 0)
134 height--;
135 setSize(width, height + 20);
136 zeros = new Vector();
137 poles = new Vector();
138 synchronized (this) {
139 if (vector1 != null && vector1.size() > 0) {
140 for (int i = 0; i < vector1.size(); i++)
141 poles.addElement(new Pole((Pole) vector1.elementAt(i)));
142
143 }
144 if (vector != null && vector.size() > 0) {
145 for (int j = 0; j < vector.size(); j++)
146 zeros.addElement(new Zero((Zero) vector.elementAt(j)));
147
148 }
149 }
150 result = new int[width * height];
151 mag = new double[width * height];
152 calculate();
153 box = new MemoryImageSource(width, height, result, 0, width);
154 boxImage = createImage(box);
155 repaint();
156 }
157
158 Vector zeros;
159 Vector poles;
160 int result[];
161 int buffer[];
162 double mag[];
163 int width;
164 int height;
165 int xMouse;
166 int yMouse;
167 double xmax;
168 double ymax;
169 double K;
170 Dimension offDimension;
171 MemoryImageSource box;
172 Image boxImage;
173 Image offImage;
174 Graphics offGraphics;
175 }
176