Ejemplo n.º 1
0
//-----------------------------------------------------------------------------
// Sorts the components of a vector
//-----------------------------------------------------------------------------
static inline void SortAbsVectorComponents( const Vector& src, int* pVecIdx )
{
	Vector absVec( fabs(src[0]), fabs(src[1]), fabs(src[2]) );

	int maxIdx = (absVec[0] > absVec[1]) ? 0 : 1;
	if (absVec[2] > absVec[maxIdx])
	{
		maxIdx = 2;
	}

	// always choose something right-handed....
	switch(	maxIdx )
	{
	case 0:
		pVecIdx[0] = 1;
		pVecIdx[1] = 2;
		pVecIdx[2] = 0;
		break;
	case 1:
		pVecIdx[0] = 2;
		pVecIdx[1] = 0;
		pVecIdx[2] = 1;
		break;
	case 2:
		pVecIdx[0] = 0;
		pVecIdx[1] = 1;
		pVecIdx[2] = 2;
		break;
	}
}
Ejemplo n.º 2
0
bool pointInSphere(GLfloat *p1, GLfloat *p2, GLfloat radius)
{
    GLfloat result[3];
    diff(p1,p2,result);
    if(absVec(result) <= radius)
        return true;
    return false;
}
Ejemplo n.º 3
0
GLfloat* norm(GLfloat *vec, GLfloat *result)
{
    GLfloat abs  = absVec(vec);
    if(abs == 1.0)
        return vec;
    if(abs != 0.0)
    {
        setVec(result, vec[0] / abs, vec[1] / abs, vec[2] / abs);
        return result;
    }
    setVec(result, 0.0, 0.0, 0.0);
    return result;
}