关于OpenCV的Mat画图问题

由于OpenCV的java版本画图有太多错误，只能自己编写画图的代码，在一个函数中，编写出画圆和深度距离的代码，

代码如下：

public int CircleMyMat(Mat Show, Point3 Center, double Radius, Scalar COLOR ,int Width)
{
//请空画布为白色
Show = Mat.zeros(Show.size(), CvType.CV_8UC3);
//Core.bitwise_not(Show, Show);//反色！

double[] C= Show.get(0, 0);
C[0]= 0;C[1]= 0;C[2]= 255;//C[0]= 0;C[1]= 0;C[2]= 0;

//1.获取圈的值//画出圆！
int CenterX = (int) Center.x;
int CenterY = (int) Center.y;
int    R = (int)Radius;
List<Point3 >  CirclePoints = new LinkedList<Point3 >();
//得到圆上点的值！
int MaxX= CenterX + (int)R;
int MinX= CenterX - (int)R;

int i =0; int X =0; int Y =0;
for(i = 0-R; i<R ;++i){
Point3 PointIn= new Point3();
PointIn.x  = i + CenterX ;
PointIn.y  = Math.sqrt( Math.abs(R*R - i*i) );//这个公式ZTMD关键！
PointIn.y  = CenterY + PointIn.y ;
CirclePoints.add(PointIn);
}
//取下半部分！
for(i = 0-R; i<R ;++i){
Point3 PointIn= new Point3();
PointIn.x  = i + CenterX ;
PointIn.y  = Math.sqrt( Math.abs(R*R - i*i) );//这个公式ZTMD关键！
PointIn.y  = CenterY - PointIn.y ;
PointIn.z  = 1;
CirclePoints.add(PointIn);
}

//2.获取Z值//画在右方如何？//固定缩放系数//保证不要跑出边界！
int CenterZ = (int) Center.z;
int Zl      = CenterZ;//Zl直接作为长度被使用！

//2.2 。画出一条线来！
Point ttt0 = new Point();
Point ttt1 = new Point();
ttt0.x = CenterX;
ttt0.y = CenterY;
ttt1.x = CenterX +  Zl;//ttt1.x = CenterX + 20;//
ttt1.y = CenterY;
lineMyMat(Show, ttt0, ttt1, COLOR ,Width);

//3.画出圈来！//在此调整粗细！
double[] P;
int Idx =0;
for( Idx=0; Idx< CirclePoints.size(); ++Idx)
{
P= C;
X= (int )CirclePoints.get(Idx).x;
Y= (int )CirclePoints.get(Idx).y;
Show.put(Y,X, P);//frameRf.put(Y, X, P);
++X;++Y;
Show.put( Y, X, C);
++X;++Y;
Show.put( Y, X, C);
}

return 1;
}

出现了无法画图的问题，总是找不到原因。

最后，把

Show = Mat.zeros(Show.size(), CvType.CV_8UC3);

注销掉，程序可以运行了。

原因到底是什么，一时难以理解......................