java版 贝塞尔曲线算法

public void test() {
		CvPoint controlPoint[] = new CvPoint[4];
		controlPoint[0] = new CvPoint(50, 60); //起点
		controlPoint[1] = new CvPoint(130, 200); //控制点
		controlPoint[2] = new CvPoint(300, 360); //控制点
		controlPoint[3] = new CvPoint(400, 600); //终点
		int n = controlPoint.length - 1; //
		int i, r;
		float u;

		bezierPoint.clear();
		// u的步长决定了曲线点的精度
		for (u = 0; u <= 1; u += 0.01) {

			CvPoint p[] = new CvPoint[n + 1];
			for (i = 0; i <= n; i++) {
				p[i] = new CvPoint(controlPoint[i].x, controlPoint[i].y);
			}

			for (r = 1; r <= n; r++) {
				for (i = 0; i <= n - r; i++) {
					p[i].x = (1 - u) * p[i].x + u * p[i + 1].x;
					p[i].y = (1 - u) * p[i].y + u * p[i + 1].y;
				}
			}
			bezierPoint.add(p[0]);
		}

		for (CvPoint point : bezierPoint) {
			System.out.println(point.x + "," + point.y);
		}
	}