this.x = X; this.y = Y; this.z = Z; } public double X { get { return x; } set { x = value; } } public double Y { get { return x; } set { x = value; } } public double Z { get { return x; } set { x = value; } } } //在此简化了点状Geometry的设计，实际产品中还包含Project（坐标变换）等复杂操作 class PointGeometry { private Point value;
public PointGeometry(double X, double Y, double Z) { value = new Point(X, Y, Z); } public PointGeometry(Point value) { //结构的赋值将分配新的内存 this.value = value; } public double X { get { return value.X; } set { this.value.X = value; }
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