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git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@909 6c8d7289-2bf4-0310-a012-ef5d649a1542
445 lines
19 KiB
Java
445 lines
19 KiB
Java
// ImagePainter.java
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// ---------------------------
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// (C) by Michael Peter Christen; mc@anomic.de
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// first published on http://www.anomic.de
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// Frankfurt, Germany, 2004
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// last major change: 16.09.2004
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//
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// This program is free software; you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation; either version 2 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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// along with this program; if not, write to the Free Software
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// Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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//
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// Using this software in any meaning (reading, learning, copying, compiling,
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// running) means that you agree that the Author(s) is (are) not responsible
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// for cost, loss of data or any harm that may be caused directly or indirectly
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// by usage of this softare or this documentation. The usage of this software
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// is on your own risk. The installation and usage (starting/running) of this
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// software may allow other people or application to access your computer and
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// any attached devices and is highly dependent on the configuration of the
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// software which must be done by the user of the software; the author(s) is
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// (are) also not responsible for proper configuration and usage of the
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// software, even if provoked by documentation provided together with
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// the software.
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//
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// Any changes to this file according to the GPL as documented in the file
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// gpl.txt aside this file in the shipment you received can be done to the
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// lines that follows this copyright notice here, but changes must not be
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// done inside the copyright notive above. A re-distribution must contain
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// the intact and unchanged copyright notice.
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// Contributions and changes to the program code must be marked as such.
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/*
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This Class implements some convenience-methods to support drawing of statistical Data
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It is not intended to replace existing awt-funktions even if it looks so
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This class provides some drawing methods that creates transparency effects that
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are not available in awt.
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*/
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package de.anomic.tools;
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import java.awt.Graphics2D;
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import java.awt.GraphicsEnvironment;
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import java.awt.GraphicsDevice;
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import java.awt.GraphicsConfiguration;
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import java.awt.Transparency;
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import java.awt.Color;
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import java.awt.image.BufferedImage;
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import java.awt.image.WritableRaster;
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import java.util.HashSet;
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import java.util.ArrayList;
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public class ImagePainter {
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// colors regarding RGB Color Model
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public static final long ADDITIVE_RED = 0xFF0000;
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public static final long ADDITIVE_GREEN = 0x00FF00;
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public static final long ADDITIVE_BLUE = 0x0000FF;
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public static final long ADDITIVE_BLACK = 0xFFFFFF;
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// colors regarding CMY Color Model
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public static final long SUBTRACTIVE_CYAN = 0xFF0000;
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public static final long SUBTRACTIVE_MAGENTA = 0x00FF00;
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public static final long SUBTRACTIVE_YELLOW = 0x0000FF;
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public static final long SUBTRACTIVE_WHITE = 0xFFFFFF;
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public static final byte MODE_REPLACE = 0;
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public static final byte MODE_ADD = 1;
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public static final byte MODE_SUB = 2;
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private static long[] font = new long[]{
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0x0000000,0x0421004,0x0A50000,0x0AFABEA,0x0FA38BE,0x09B39B2,0x0E82A8A,0x0420000,
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0x0221082,0x0821080,0x0051040,0x0023880,0x0001088,0x0003800,0x0000004,0x0111110,
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0x0E9D72E,0x046108E,0x0E8991F,0x0E88A2E,0x0657C42,0x1F8783E,0x0E87A2E,0x1F11084,
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0x0E8BA2E,0x0E8BC2E,0x0020080,0x0020088,0x0222082,0x00F83E0,0x0820888,0x0E11004,
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0x0EEFA0E,0x04547F1,0x1C97A3E,0x0E8420E,0x1E8C63E,0x1F8721F,0x1F87210,0x0E85E2E,
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0x118FE31,0x1F2109F,0x1F0862E,0x1197251,0x108421F,0x11DD631,0x11CD671,0x0E8C62E,
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0x1E8FA10,0x0E8D64D,0x1E8FA51,0x0E8382E,0x1F21084,0x118C62E,0x118C544,0x118C6AA,
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0x1151151,0x1151084,0x1F1111F,0x0E4210E,0x1041041,0x0E1084E,0x0454400,0x000001F,
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0x0820000,0x0003E2F,0x1087A3E,0x0003E0F,0x010BE2F,0x0064A8F,0x0623884,0x00324BE,
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0x1085B31,0x0401084,0x0401088,0x1084F93,0x0421084,0x0002AB5,0x0003A31,0x0003A2E,
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0x00F47D0,0x007C5E1,0x0011084,0x0001932,0x0471084,0x000462E,0x0004544,0x00056AA,
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0x000288A,0x0002884,0x0003C9E,0x0622086,0x0421084,0x0C2088C,0x0045440,0x1F8C63F
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};
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private static int[][] circles = new int[0][];
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private byte[] grid; // one-dimensional arrays are much faster than two-dimensional
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private int width, height;
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private int defaultColR, defaultColG, defaultColB;
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private byte defaultMode;
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public ImagePainter(int width, int height, long backgroundColor) {
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this.width = width;
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this.height = height;
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this.defaultColR = 0xFF;
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this.defaultColG = 0xFF;
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this.defaultColB = 0xFF;
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this.defaultMode = MODE_REPLACE;
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grid = new byte[3*width*height];
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// fill grid with background color
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byte bgR = (byte) (backgroundColor >> 16);
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byte bgG = (byte) ((backgroundColor >> 8) & 0xff);
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byte bgB = (byte) (backgroundColor & 0xff);
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for (int n = 3 * width * height - 3; n >= 0; n = n - 3) {
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grid[n ] = bgR;
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grid[n + 1] = bgG;
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grid[n + 2] = bgB;
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}
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}
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private long colNum(String col) {
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return Long.parseLong(col, 16);
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//return Integer.parseInt(col.substring(0,2), 16) << 16 | Integer.parseInt(col.substring(2,4), 16) << 8 | Integer.parseInt(col.substring(4,6), 16);
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}
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private String colStr(long c) {
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String s = Long.toHexString(c);
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while (s.length() < 6) s = "0" + s;
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return s;
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}
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public void setColor(long c) {
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defaultColR = (int) (c >> 16);
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defaultColG = (int) ((c >> 8) & 0xff);
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defaultColB = (int) (c & 0xff);
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}
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public void setColor(String s) {
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setColor(colNum(s));
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}
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public void setMode(byte m) {
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this.defaultMode = m;
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}
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private void plot(int x, int y) {
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if ((x < 0) || (x >= width)) return;
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if ((y < 0) || (y >= height)) return;
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int n = 3 * (x + y * width);
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if (this.defaultMode == MODE_REPLACE) {
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grid[n ] = (byte) defaultColR;
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grid[n + 1] = (byte) defaultColG;
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grid[n + 2] = (byte) defaultColB;
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} else if (this.defaultMode == MODE_ADD) {
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int r = ((int) (0xff & grid[n ])) + defaultColR; if (r > 0xff) r = 0xff;
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int g = ((int) (0xff & grid[n + 1])) + defaultColG; if (g > 0xff) g = 0xff;
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int b = ((int) (0xff & grid[n + 2])) + defaultColB; if (b > 0xff) b = 0xff;
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grid[n ] = (byte) r;
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grid[n + 1] = (byte) g;
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grid[n + 2] = (byte) b;
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} else if (this.defaultMode == MODE_SUB) {
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int r = ((int) (0xff & grid[n ])) - defaultColR; if (r < 0) r = 0;
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int g = ((int) (0xff & grid[n + 1])) - defaultColG; if (g < 0) g = 0;
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int b = ((int) (0xff & grid[n + 2])) - defaultColB; if (b < 0) b = 0;
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grid[n ] = (byte) r;
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grid[n + 1] = (byte) g;
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grid[n + 2] = (byte) b;
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}
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}
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private void line(int Ax, int Ay, int Bx, int By) {
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// Bresenham's line drawing algorithm
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int dX = Math.abs(Bx-Ax);
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int dY = Math.abs(By-Ay);
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int Xincr, Yincr;
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if (Ax > Bx) Xincr=-1; else Xincr=1;
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if (Ay > By) Yincr=-1; else Yincr=1;
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if (dX >= dY) {
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int dPr = dY<<1;
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int dPru = dPr - (dX<<1);
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int P = dPr - dX;
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for (; dX>=0; dX--) {
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plot(Ax, Ay);
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if (P > 0) {
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Ax+=Xincr;
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Ay+=Yincr;
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P+=dPru;
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} else {
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Ax+=Xincr;
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P+=dPr;
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}
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}
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} else {
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int dPr = dX<<1;
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int dPru = dPr - (dY<<1);
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int P = dPr - dY;
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for (; dY>=0; dY--) {
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plot(Ax, Ay);
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if (P > 0) {
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Ax+=Xincr;
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Ay+=Yincr;
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P+=dPru;
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} else {
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Ay+=Yincr;
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P+=dPr;
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}
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}
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}
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}
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private static int[] getCircleCoords(int radius) {
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if ((radius - 1) < circles.length) return circles[radius - 1];
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// read some lines from known circles
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HashSet crds = new HashSet();
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crds.add("0|0");
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String co;
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for (int i = Math.max(0, circles.length - 5); i < circles.length; i++) {
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for (int j = 0; j < circles[i].length; j = j + 2) {
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co = circles[i][j] + "|" + circles[i][j + 1];
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if (!(crds.contains(co))) crds.add(co);
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}
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}
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// copy old circles into new array
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int[][] newCircles = new int[radius + 30][];
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System.arraycopy(circles, 0, newCircles, 0, circles.length);
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// compute more lines in new circles
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int x, y;
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ArrayList crc;
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for (int r = circles.length; r < newCircles.length; r++) {
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crc = new ArrayList();
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for (int a = 0; a <= 2 * (r + 1); a++) {
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x = (int) ((r + 1) * Math.cos(Math.PI * a / (4 * (r + 1))));
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y = (int) ((r + 1) * Math.sin(Math.PI * a / (4 * (r + 1))));
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co = x + "|" + y;
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if (!(crds.contains(co))) {
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crc.add(new int[]{x, y});
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crds.add(co);
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}
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x = (int) ((r + 0.5) * Math.cos(Math.PI * a / (4 * (r + 1))));
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y = (int) ((r + 0.5) * Math.sin(Math.PI * a / (4 * (r + 1))));
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co = x + "|" + y;
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if (!(crds.contains(co))) {
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crc.add(new int[]{x, y});
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crds.add(co);
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}
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}
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// put coordinates into array
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//System.out.print("Radius " + r + " => " + crc.size() + " points: ");
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newCircles[r] = new int[2 * (crc.size() - 1)];
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int[] coords;
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for (int i = 0; i < crc.size() - 1; i++) {
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coords = (int[]) crc.get(i);
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newCircles[r][2 * i ] = coords[0];
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newCircles[r][2 * i + 1] = coords[1];
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//System.out.print(circles[r][i][0] + "," +circles[r][i][1] + "; ");
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}
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//System.out.println();
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}
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crc = null;
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crds = null;
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// move newCircles to circles array
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circles = newCircles;
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newCircles = null;
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// finally return wanted slice
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return circles[radius - 1];
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}
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private void circle(int xc, int yc, int radius) {
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if (radius == 0) {
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plot(xc, yc);
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} else {
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int[] c = getCircleCoords(radius);
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int x, y;
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for (int i = (c.length / 2) - 1; i >= 0; i--) {
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x = c[2 * i ];
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y = c[2 * i + 1];
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plot(xc + x , yc - y - 1); // quadrant 1
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plot(xc - x + 1, yc - y - 1); // quadrant 2
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plot(xc + x , yc + y ); // quadrant 4
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plot(xc - x + 1, yc + y ); // quadrant 3
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}
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}
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}
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private void circle(int xc, int yc, int radius, int fromArc, int toArc) {
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// draws only a part of a circle
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// arc is given in degree
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if (radius == 0) {
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plot(xc, yc);
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} else {
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int[] c = getCircleCoords(radius);
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int q = c.length / 2;
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int[][] c4 = new int[q * 4][];
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for (int i = 0; i < q; i++) {
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c4[i ] = new int[]{ c[2 * (i )], -c[2 * (i ) + 1] - 1}; // quadrant 1
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c4[i + q] = new int[]{1 - c[2 * (q - 1 - i)], -c[2 * (q - 1 - i) + 1] - 1}; // quadrant 2
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c4[i + 2 * q] = new int[]{1 - c[2 * (i )], c[2 * (i ) + 1] }; // quadrant 3
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c4[i + 3 * q] = new int[]{ c[2 * (q - 1 - i)], c[2 * (q - 1 - i) + 1] }; // quadrant 4
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}
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for (int i = q * 4 * fromArc / 360; i < q * 4 * toArc / 360; i++) {
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plot(xc + c4[i][0], yc + c4[i][1]);
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}
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}
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}
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private void print(int x, int y, char letter) {
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int index = (int) letter - 0x20;
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if (index >= font.length) return;
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long character = font[index];
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long row;
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for (int i = 0; i < 5; i++) {
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row = character & 0x1f;
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character = character >> 5;
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for (int j = 0; j < 5; j++) {
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if ((row & 1) == 1) plot(x + 5 - j, y);
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row = row >> 1;
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}
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y--;
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}
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}
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public void dot(int x, int y, int radius, boolean filled) {
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if (filled) {
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for (int r = radius; r >= 0; r--) circle(x, y, r);
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} else {
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circle(x, y, radius);
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}
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}
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public void arc(int x, int y, int innerRadius, int outerRadius, int fromArc, int toArc) {
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for (int r = innerRadius; r <= outerRadius; r++) circle(x, y, r, fromArc, toArc);
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}
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public void print(int x, int y, String message, boolean alignRight) {
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int xx = (alignRight) ? x : x - 6 * message.length();
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for (int i = 0; i < message.length(); i++) {
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print(xx, y, message.charAt(i));
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xx += 6;
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}
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}
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private static final int arcDist = 8;
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public void arcPrint(int cx, int cy, int radius, int angle, String message) {
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int x = cx + (int) ((radius + 1) * Math.cos(Math.PI * angle / 180));
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int y = cy - (int) ((radius + 1) * Math.sin(Math.PI * angle / 180));
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int yp = y + 3;
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if ((angle > arcDist) && (angle < 180 - arcDist)) yp = y;
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if ((angle > 180 + arcDist) && (angle < 360 - arcDist)) yp = y + 6;
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if ((angle > ( 90 - arcDist)) && (angle < ( 90 + arcDist))) yp -= 6;
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if ((angle > (270 - arcDist)) && (angle < (270 + arcDist))) yp += 6;
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int xp = x - 3 * message.length();
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if ((angle > (90 + arcDist)) && (angle < (270 - arcDist))) xp = x - 6 * message.length();
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if ((angle < (90 - arcDist)) || (angle > (270 + arcDist))) xp = x;
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print(xp, yp, message, true);
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}
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public void arcLine(int cx, int cy, int innerRadius, int outerRadius, int angle) {
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int xi = cx + (int) (innerRadius * Math.cos(Math.PI * angle / 180));
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int yi = cy - (int) (innerRadius * Math.sin(Math.PI * angle / 180));
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int xo = cx + (int) (outerRadius * Math.cos(Math.PI * angle / 180));
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int yo = cy - (int) (outerRadius * Math.sin(Math.PI * angle / 180));
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line(xi, yi, xo, yo);
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}
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public void arcDot(int cx, int cy, int arcRadius, int angle, int dotRadius) {
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int x = cx + (int) (arcRadius * Math.cos(Math.PI * angle / 180));
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int y = cy - (int) (arcRadius * Math.sin(Math.PI * angle / 180));
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dot(x, y, dotRadius, true);
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}
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public void arcArc(int cx, int cy, int arcRadius, int angle, int innerRadius, int outerRadius, int fromArc, int toArc) {
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int x = cx + (int) (arcRadius * Math.cos(Math.PI * angle / 180));
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int y = cy - (int) (arcRadius * Math.sin(Math.PI * angle / 180));
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arc(x, y, innerRadius, outerRadius, fromArc, toArc);
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}
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public BufferedImage toImage(boolean complementary) {
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/*
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GraphicsEnvironment ge = GraphicsEnvironment.getLocalGraphicsEnvironment();
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GraphicsDevice gs = ge.getDefaultScreenDevice();
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GraphicsConfiguration gc = gs.getDefaultConfiguration();
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BufferedImage bi = gc.createCompatibleImage(width, height, Transparency.TRANSLUCENT);
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*/
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try {
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BufferedImage bi = new BufferedImage(width, height, BufferedImage.TYPE_INT_RGB);
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Graphics2D gr = bi.createGraphics();
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gr.setBackground(Color.white);
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gr.clearRect(0, 0, width, height);
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WritableRaster wr = bi.getRaster();
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int n;
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int r, g, b;
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if (complementary) {
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// then set pixels
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for (int i = width - 1; i >= 0; i--) {
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for (int j = height - 1; j >= 0; j--) {
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n = 3 * (i + j * width);
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r = 0xff & grid[n ];
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g = 0xff & grid[n + 1];
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b = 0xff & grid[n + 2];
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wr.setPixel(i, j, new int[]{(0x1fe - g - b) / 2, (0x1fe - r - b) / 2, (0x1fe - r - g) / 2});
|
|
}
|
|
}
|
|
} else {
|
|
for (int i = width - 1; i >= 0; i--) {
|
|
for (int j = height - 1; j >= 0; j--) {
|
|
n = 3 * (i + j * width);
|
|
r = 0xff & grid[n ];
|
|
g = 0xff & grid[n + 1];
|
|
b = 0xff & grid[n + 2];
|
|
wr.setPixel(i, j, new int[]{r, g, b});
|
|
}
|
|
}
|
|
}
|
|
return bi;
|
|
} catch (Exception e) {
|
|
// strange case where environment disallowes generation of graphics
|
|
/*
|
|
java.lang.InternalError: Can't connect to X11 window server using ':0.0' as the value of the DISPLAY variable.
|
|
at sun.awt.X11GraphicsEnvironment.initDisplay(Native Method)
|
|
at sun.awt.X11GraphicsEnvironment.access$000(X11GraphicsEnvironment.java:53)
|
|
at sun.awt.X11GraphicsEnvironment$1.run(X11GraphicsEnvironment.java:142)
|
|
at java.security.AccessController.doPrivileged(Native Method)
|
|
at sun.awt.X11GraphicsEnvironment.<clinit>(X11GraphicsEnvironment.java:131)
|
|
at java.lang.Class.forName0(Native Method)
|
|
at java.lang.Class.forName(Class.java:164)
|
|
at java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment(GraphicsEnvironment.java:68)
|
|
at java.awt.image.BufferedImage.createGraphics(BufferedImage.java:1141)
|
|
at de.anomic.tools.ImagePainter.toImage(ImagePainter.java:354)
|
|
*/
|
|
System.out.println("Error with Graphics environment:");
|
|
e.printStackTrace();
|
|
return new BufferedImage(0, 0, BufferedImage.TYPE_INT_RGB);
|
|
}
|
|
}
|
|
|
|
}
|