| | |
| | | throw new RuntimeException("库位解析异常"); |
| | | } |
| | | |
| | | public static void main(String[] args) { |
| | | double[] lev = RingThroughXY(183.0, 1830.0); |
| | | System.out.printf("点的坐标为: (%.2f, %.2f)%n", lev[0], lev[1]); |
| | | } |
| | | |
| | | public static double[] RingThroughXY(double a,double b) { |
| | | // while (true){ |
| | | // if (b>=a){ |
| | | // b=b-a; |
| | | // }else { |
| | | // break; |
| | | // } |
| | | // } |
| | | double l = b/a; |
| | | // 已知数据 |
| | | double circumference = 314; // 圆周长 |
| | | double arcLength = 314*l; // 给出的弧长 |
| | | |
| | | // 计算圆的半径 |
| | | double radius = circumference / (2 * Math.PI); |
| | | |
| | | // 圆心坐标 |
| | | double centerX = 50; |
| | | double centerY = 50; |
| | | |
| | | // 求弧度 |
| | | double theta = arcLength / radius; |
| | | |
| | | // 计算点的坐标 |
| | | double x = 100-(centerX + radius * Math.cos(theta)); |
| | | double y = centerY + radius * Math.sin(theta); |
| | | |
| | | return new double[]{x,y}; |
| | | } |
| | | |
| | | |
| | | } |