vec3d.h File Reference

#include <iostream>
#include <cmath>

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Classes
class	Vec3D
class	Vec2D

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

Function Documentation

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;
}