#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#define PI3.1415927
typedef struct _Point_
{
double x;
double y;
double angle;
} POINT;
double AngleToRadian(double p_pAngle)
{
double Radian = PI*p_pAngle/180;
return Radian;
}
double RadianToAngle(double p_pRadian)
{
return 180*p_pRadian/PI;
}
int main()
{
//double PI = 3.1415927;
POINT orgPoint1 = {0,0,0};//初始原点
POINT orgPoint2 = {0,0,270};//变换后的原点
POINT p1 = {2,1,0};//变换前的点
POINT p2 = {0,0,0};//变换后的点
double L = sqrt(p1.x*p1.x + p1.y*p1.y);
double Afa = AngleToRadian(orgPoint2.angle);//变换后与原坐标系X轴的夹角
double Belta = asin(p1.y/L);//原坐标点与X轴的夹角
double Germa = Belta - Afa;
p2.x = L*cos(Germa);
p2.y = L*sin(Germa);
printf("原点(%.2f,%.2f)\r\n",orgPoint1.x,orgPoint1.y);
printf("变换后的原点(%.2f,%.2f),角度 %.2f\r\n",orgPoint2.x,orgPoint2.y,orgPoint2.angle);
printf("斜边长度(%.2f)\r\n",L);
printf("贝塔 变换前点与X轴的夹角 弧度(%.2f) 角度(%.2f)\r\n",Belta,RadianToAngle(Belta));
printf("伽马 弧度(%.2f) 角度(%.2f)\r\n",Germa,RadianToAngle(Germa));
printf("变换后的点(%.2f,%.2f)\r\n",p2.x,p2.y);
getchar();
return 0;
}