sigonasr2/PolygonFillRender
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Oval and Circle rendering

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sigonasr2 2022-03-22 18:47:25 -05:00
parent ec2bb7b976
commit b6c966eb57
2 changed files with 51 additions and 5 deletions
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bin/sig/Panel.class
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src/sig/Panel.java
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@ -15,6 +15,7 @@ public class Panel extends JPanel implements Runnable {
public int pixel[];
public int width=1280;
public int height=720;
final int CIRCLE_PRECISION=32;
private Thread thread;
private Image imageBuffer;
private MemoryImageSource mImageProducer;
@ -95,7 +96,7 @@ public class Panel extends JPanel implements Runnable {
x_offset+=1;
y_offset=50;
/*FillPolygon(p,Color.MAGENTA,new Point[] {
FillPolygon(p,Color.WHITE,50,50,new Point[] {
new Point(135,2),
new Point(166,96),
new Point(265,97),
@ -106,17 +107,62 @@ public class Panel extends JPanel implements Runnable {
new Point(84,156),
new Point(4,97),
new Point(103,96),
});*/
FillPolygon(p,Color.BRIGHT_CYAN,new Point[] {
});
FillPolygon(p,Color.BRIGHT_CYAN,x_offset,y_offset,new Point[] {
new Point(28,29),
new Point(78,103),
new Point(120,31),
new Point(123,221),
new Point(30,218),
});
//FillRect(p,Color.BRIGHT_RED,200,200,600,64);
FillCircle(p,Color.BRIGHT_BLUE,150,150,100);
FillOval(p,Color.BRIGHT_GREEN,300,150,100,50);
}
public void FillPolygon(int[] p,Color col,Point...points) {
public void FillRect(int[] p,Color col,double x,double y,double w,double h) {
for (int xx=0;xx<w;xx++) {
for (int yy=0;yy<h;yy++) {
int index = ((int)y+yy)*width+(int)x+xx;
p[index]=col.getColor();
}
}
}
public void FillCircle(int[] p,Color col,double center_x,double center_y,double r) {
int counter=0;
Point[] points = new Point[CIRCLE_PRECISION];
for (double theta=0;theta<Math.PI*2;theta+=((Math.PI*2)/CIRCLE_PRECISION)) {
//System.out.println("Loop "+counter+++". Theta:"+theta);
//System.out.println("X:"+(Math.sin(theta)*r+center_x)+" Y:"+(Math.cos(theta)*r+center_y));
points[counter++]=new Point((int)(Math.round(Math.sin(theta)*r+center_x)),(int)(Math.round(Math.cos(theta)*r+center_y)));
}
FillPolygon(p,col,center_x,center_y,points);
}
public void FillOval(int[] p,Color col,double center_x,double center_y,double w,double h) {
int counter=0;
Point[] points = new Point[CIRCLE_PRECISION];
double r = Math.max(w,h);
double ratio = Math.min(w,h)/r;
for (double theta=0;theta<Math.PI*2;theta+=((Math.PI*2)/CIRCLE_PRECISION)) {
//System.out.println("Loop "+counter+++". Theta:"+theta);
//System.out.println("X:"+(Math.sin(theta)*r+center_x)+" Y:"+(Math.cos(theta)*r+center_y));
Point newP = new Point((int)(Math.round(Math.sin(theta)*r)),(int)(Math.round(Math.cos(theta)*r)));
if (w<h) {
newP.x=(int)Math.round(newP.x*ratio);
} else {
newP.y=(int)Math.round(newP.y*ratio);
}
newP.x+=center_x;
newP.y+=center_y;
points[counter++]=newP;
}
FillPolygon(p,col,center_x,center_y,points);
}
public void FillPolygon(int[] p,Color col,double x_offset,double y_offset,Point...points) {
Edge[] edges = new Edge[points.length];
List<Edge> edges_sorted = new ArrayList<Edge>();
for (int i=0;i<points.length;i++) {
@ -220,7 +266,7 @@ public class Panel extends JPanel implements Runnable {
// request a JPanel re-drawing
repaint();
//System.out.println("Repaint "+frameCount++);
try {Thread.sleep(5);} catch (InterruptedException e) {}
//try {Thread.sleep(1);} catch (InterruptedException e) {}
}
}
}