CaRMtl/rene/zirkel/graphics/PolygonFiller.java
2018-09-04 22:51:42 -04:00

125 lines
2.4 KiB
Java

/*
Copyright 2006 Rene Grothmann, modified by Eric Hakenholz
This file is part of C.a.R. software.
C.a.R. is a 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, version 3 of the License.
C.a.R. 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, see <http://www.gnu.org/licenses/>.
*/
package rene.zirkel.graphics;
import rene.zirkel.objects.ConstructionObject;
/**
* @author Rene
*
*/
public class PolygonFiller {
MyGraphics G;
ConstructionObject O;
double C, R;
double C1, R1;
boolean HaveToFinish;
public static int step = 5;
public boolean Started;
boolean Solid;
double x[], y[];
int nx;
public PolygonFiller(final MyGraphics g, final ConstructionObject o) {
G = g;
O = o;
Started = false;
}
public void startPolygon(final double c, final double r) {
C = c;
R = r;
HaveToFinish = false;
nx = 0;
Started = true;
drawTo(c, r, false);
}
public void start() {
nx = 0;
Started = false;
}
public void drawTo(final double c, final double r) {
drawTo(c, r, true);
}
public void drawTo(final double c, final double r, final boolean optimized) {
if (!Started) {
startPolygon(c, r);
return;
}
if (!optimized || (c - C) * (c - C) + (r - R) * (r - R) > step) {
if (x == null) {
x = new double[1000];
y = new double[1000];
nx = 0;
}
if (nx >= x.length) {
final double xn[] = new double[2 * x.length];
final double yn[] = new double[2 * x.length];
for (int i = 0; i < nx; i++) {
xn[i] = x[i];
yn[i] = y[i];
}
x = xn;
y = yn;
}
x[nx] = c;
y[nx++] = r;
C = c;
R = r;
HaveToFinish = false;
} else {
C1 = c;
R1 = r;
HaveToFinish = true;
}
}
public void finishPolygon() {
if (HaveToFinish) {
drawTo(C1, R1, false);
HaveToFinish = false;
}
G.fillPolygon(x, y, nx, false, true, O);
Started = false;
}
public int length() {
return nx;
}
public double x(final int i) {
return x[i];
}
public double y(final int i) {
return y[i];
}
public void setGraphics(final MyGraphics g) {
G = g;
}
}