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