vec3d.h File Reference

#include <cmath>
#include <iostream>

Go to the source code of this file.

Classes
class	Vec3D
class	AaBox3D
class	Vec2D
struct	Quaternion

Functions
void	rotate (float x0, float y0, float *x, float *y, float angle)

Function Documentation

rotate()

void rotate ( float  x0, float  y0, float *  x, float *  y, float  angle  )

inline

{
    float xa = *x - x0, ya = *y - y0;
    *x = xa * cosf(angle) - ya * sinf(angle) + x0;
    *y = xa * sinf(angle) + ya * cosf(angle) + y0;
}