我使用此代码从极坐标转换为笛卡尔坐标,反之亦然:
final double alpha = Math.atan2(y - originY, x - originX);
final int checkx = originX + (int) (radiusW * (Math.cos(alpha)));
final int checky = originY + (int) (radiusH * (Math.sin(alpha)));
final double newAlpha = Math.atan2(checky - originY, checkx - originX);
double fault = Math.toDegrees(newAlpha) - Math.toDegrees(alpha);
使用这个,我得到可以达到15度的故障,它可以更好吗?
谢谢!
编辑 :
final double alpha = Math.atan2(y - originY, x - originX);
final double checkx = originX + (radiusW * (Math.cos(alpha)));
final double checky = originY + (radiusH * (Math.sin(alpha)));
final double newAlpha = Math.atan2(checky - originY, checkx - originX);
double fault = Math.toDegrees(newAlpha) - Math.toDegrees(alpha);
试过还是一样的错误...
例如 :
public static void main(String[] args) {
int originY = 700;
int originX = 500;
int radiusW = 500;
int radiusH = 700;
int y = 800;
int x = 600;
final double alpha = Math.atan2(y - originY, x - originX);
final double checkx = originX + (radiusW * (Math.cos(alpha)));
final double checky = originY + (radiusH * (Math.sin(alpha)));
final double newAlpha = Math.atan2(checky - originY, checkx - originX);
System.out.println(Math.toDegrees(newAlpha) - Math.toDegrees(alpha));
}
输出 :
9.462322208025618