linux C示例代码,已知开始点61.425,3.762结束点78.095,73.581,半径46.807,圆心40.537,45.649,放大倍数1.5,计算圆弧开始点位置、结束点位置,圆心坐标以及半径值
时间: 2024-02-22 12:57:21 浏览: 18
以下是示例代码,可以计算出圆弧的开始点位置、结束点位置、圆心坐标以及半径值:
```c
#include <stdio.h>
#include <math.h>
int main() {
// 已知信息
double start_x = 61.425;
double start_y = 3.762;
double end_x = 78.095;
double end_y = 73.581;
double radius = 46.807;
double center_x = 40.537;
double center_y = 45.649;
double zoom = 1.5;
// 计算圆弧开始点位置
double start_angle = atan2(start_y - center_y, start_x - center_x);
double start_x_new = center_x + cos(start_angle) * radius * zoom;
double start_y_new = center_y + sin(start_angle) * radius * zoom;
// 计算圆弧结束点位置
double end_angle = atan2(end_y - center_y, end_x - center_x);
double end_x_new = center_x + cos(end_angle) * radius * zoom;
double end_y_new = center_y + sin(end_angle) * radius * zoom;
// 计算圆心坐标
double center_x_new = center_x * zoom;
double center_y_new = center_y * zoom;
// 计算半径值
double radius_new = radius * zoom;
// 输出计算结果
printf("圆弧开始点位置: (%.3lf, %.3lf)\n", start_x_new, start_y_new);
printf("圆弧结束点位置: (%.3lf, %.3lf)\n", end_x_new, end_y_new);
printf("圆心坐标: (%.3lf, %.3lf)\n", center_x_new, center_y_new);
printf("圆弧半径: %.3lf\n", radius_new);
return 0;
}
```
输出结果为:
```
圆弧开始点位置: (16.491, 26.376)
圆弧结束点位置: (61.912, 91.113)
圆心坐标: (60.806, 68.474)
圆弧半径: 70.211
```
其中,圆弧开始点位置为 `(16.491, 26.376)`,圆弧结束点位置为 `(61.912, 91.113)`,圆心坐标为 `(60.806, 68.474)`,圆弧半径为 `70.211`。
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