[wadalabfont-kit] / java / Bezier.java

Annotation of /java/Bezier.java

1 :	ktanaka	1.1	import java.util.*;
2 :
3 :			public class Bezier extends OutlineComponent{
4 :			Point p0,p1,p2,p3;
5 :			public Bezier(Point p0,Point p1,Point p2,Point p3){
6 :			this.p0=p0; this.p1=p1; this.p2=p2; this.p3=p3;
7 :			}
8 :			public Bezier[] divide(){
9 :			Bezier[] ret=new Bezier[2];
10 :			Point midp=p0.inter(p3,0.5).inter(p1.inter(p2,0.5),0.75);
11 :			ret[0]=new Bezier(p0,p0.inter(p1,0.5),
12 :			p0.inter(p2,0.5).inter(p1,0.5),midp);
13 :			ret[1]=new Bezier(midp,p3.inter(p1,0.5).inter(p2,0.5),
14 :			p3.inter(p2,0.5),p3);
15 :			return ret;
16 :			}
17 :			public void render(Vector ret,double limit){
18 :			ret.addElement(p0);
19 :			if(p0.distance(p3)<limit){
20 :			ret.addElement(p3);
21 :			}
22 :			else{
23 :			Bezier[] div=divide();
24 :			div[0].render(ret,limit);
25 :			div[1].render(ret,limit);
26 :			}
27 :			}
28 :	ktanaka	1.2	public OutlineComponent plus(Point point){
29 :			return new Bezier(p0.plus(point),p1.plus(point),p2.plus(point),p3.plus(point));
30 :			}
31 :			public OutlineComponent rot(double theta){
32 :			return new Bezier(p0.rot(theta),p1.rot(theta),p2.rot(theta),p3.rot(theta));
33 :			}
34 :			public OutlineComponent times(double ratio){
35 :			return new Bezier(p0.times(ratio),p1.times(ratio),p2.times(ratio),p3.times(ratio));
36 :			}
37 :			public OutlineComponent timesY(double ratio){
38 :			return new Bezier(p0.timesY(ratio),p1.timesY(ratio),p2.timesY(ratio),p3.timesY(ratio));
39 :			}
40 :			public Point firstPoint(){ return p0;}
41 :			public Point lastPoint(){ return p3;}
42 :			public String toString(){
43 :			return "Bezier("+p0+","+p1+","+p2+","+p3+")";
44 :			}
45 :	ktanaka	1.1	}