Android 2D Graphics (circle, line, point) tool class (continuous update)

public class Circle {private PointF centerpoint;private float radius;public PointF getcenterpoint () {return centerpoint;} public void Setcenterpoint (PointF centerpoint) {this.centerpoint = CenterPoint;} public float Getradius () {return radius;} public void Setradius (float radius) {This.radius = radius;}}

public class Circleutils {/** * Center coordinates, RADIUS * @param pA * @param pB * @param pC * @return */public static circle GetC based on three points on a circle   Ircle (PointF pa,pointf pb,pointf pC) {float MAT1,MAT2,MAT3; MAT1 = ((pb.x*pb.x +pb.y*pb.y)-(pa.x*pa.x +pa.y*pa.y)) * ((PC.Y-PA.Y))-((pc.x*pc.x +pc.y*pc.y)-(pa.x*pa.x +pA.y*pA.y   )) * (PB.Y-PA.Y); MAT2 = (pb.x-pa.x) * ((PC.X*PC.X+PC.Y*PC.Y)-(pa.x*pa.x +pa.y*pa.y))-((pc.x-pa.x)) * ((PB.X*PB.X+PB.Y*PB.Y)-(   Pa.x*pa.x +pa.y*pa.y));    MAT3 = (pb.x-pa.x) * (PC.Y-PA.Y)-(pc.x-pa.x) * (PB.Y-PA.Y)); Circle Circle=new Circle (); PointF centerpoint=new PointF (); float radius;   Centerpoint.x = MAT1/MAT3;  Centerpoint.y = MAT2/MAT3; radius= (float) math.sqrt (((pa.x-centerpoint.x) * (pa.x-centerpoint.x) + (PA.Y-CENTERPOINT.Y) * (PA.Y-CENTERPOINT.Y))    ; Circle.setcenterpoint (CenterPoint);  Circle.setradius (RADIUS); return circle;} /** * To find the coordinates of a point at each end of a circular arc * @param circle * @param point at one end of STARTP arc * @param angle arc corresponding angle * @return */public PointF Getendpointofa RC (Circle Circle,poiNtF startp,float angle) {PointF centerp=circle.getcenterpoint (); PointF endpointf=new PointF () endpointf.x= (float) (centerp.x+ (startp.x-centerp.x) *math.cos (angle*math.pi/180)-( STARTP.Y-CENTERP.Y) *math.sin (angle*math.pi/180)) endpointf.y= (float) (centerp.y+ (startp.x-centerp.x) *Math.sin ( angle*math.pi/180) + (STARTP.Y-CENTERP.Y) *math.cos (angle*math.pi/180)); return endpointf;}}