Marown/yacy_search_server
1
0
Fork 0
mirror of https://github.com/yacy/yacy_search_server.git synced 2024-09-19 00:01:41 +02:00
Code Issues Actions Packages Projects Releases Wiki Activity

added anti-alias function for line drawing

Browse Source 
git-svn-id: https://svn.berlios.de/svnroot/repos/yacy/trunk@6438 6c8d7289-2bf4-0310-a012-ef5d649a1542
This commit is contained in:
orbiter 2009-10-30 15:58:36 +00:00
parent 30f108f97d
commit 4240785f20
1 changed files with 21 additions and 7 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

28
source/net/yacy/visualization/RasterPlotter.java
View File

@ -41,6 +41,7 @@ import java.io.File;
import java.io.FileOutputStream;
import java.io.IOException;
import java.util.ArrayList;
import java.util.List;
import javax.imageio.ImageIO;
@ -64,7 +65,8 @@ public class RasterPlotter {
public static final byte FILTER_BLUR = 1;
public static final byte FILTER_INVERT = 2;
protected int width, height;
protected final int width, height;
private final int[] cc;
private final BufferedImage image;
private final WritableRaster grid;
private final int[] defaultCol;
@ -77,6 +79,7 @@ public class RasterPlotter {
public RasterPlotter(final int width, final int height, final byte drawMode, final long backgroundColor) {
if (!(MemoryControl.request(1024 * 1024 + 3 * width * height, false))) throw new RuntimeException("ymage: not enough memory (" + MemoryControl.available() + ") available");
this.cc = new int[3];
this.width = width;
this.height = height;
this.backgroundCol = backgroundColor;
@ -149,9 +152,7 @@ public class RasterPlotter {
public void plot(final int x, final int y) {
plot (x, y, 100);
}
private final int[] cc = new int[3];
public void plot(final int x, final int y, final int intensity) {
if ((x < 0) || (x >= width)) return;
if ((y < 0) || (y >= height)) return;
@ -197,8 +198,20 @@ public class RasterPlotter {
}
}
public void line(int Ax, int Ay, final int Bx, final int By) {
public void line(final int Ax, final int Ay, final int Bx, final int By) {
if (this.defaultMode == MODE_REPLACE) {
List<int[]> points = linex(Ax * 2, Ay * 2, Bx * 2, By * 2);
for (int[] point: points) plot(point[0] / 2, point[1] / 2, 100);
} else {
List<int[]> points = linex(Ax * 2, Ay * 2, Bx * 2, By * 2);
for (int[] point: points) plot(point[0] / 2, point[1] / 2, 50);
}
}
private List<int[]> linex(int Ax, int Ay, final int Bx, final int By) {
// Bresenham's line drawing algorithm
ArrayList<int[]> points = new ArrayList<int[]>();
int dX = Math.abs(Bx-Ax);
int dY = Math.abs(By-Ay);
int Xincr, Yincr;
@ -209,7 +222,7 @@ public class RasterPlotter {
final int dPru = dPr - (dX<<1);
int P = dPr - dX;
for (; dX>=0; dX--) {
plot(Ax, Ay);
points.add(new int[]{Ax, Ay});
if (P > 0) {
Ax+=Xincr;
Ay+=Yincr;
@ -224,7 +237,7 @@ public class RasterPlotter {
final int dPru = dPr - (dY<<1);
int P = dPr - dY;
for (; dY>=0; dY--) {
plot(Ax, Ay);
points.add(new int[]{Ax, Ay});
if (P > 0) {
Ax+=Xincr;
Ay+=Yincr;
@ -235,6 +248,7 @@ public class RasterPlotter {
}
}
}
return points;
}
public void lineDot(final int x0, final int y0, final int x1, final int y1, final int radius, final int distance, final long lineColor, final long dotColor) {