void cVector::CrossProduct (cVector vector1, cVector vector2)
{
Set (vector1.y () * vector2.z () - vector1.z () * vector2.y (), // = x
vector1.z () * vector2.x () - vector1.x () * vector2.z (), // = y
vector1.x () * vector2.y () - vector1.y () * vector2.x () // = z
);
}
void cMatrix::TranslationMatrix (cVector vector)
{
Identity ();
m_fields[0][3] = vector.x ();
m_fields[1][3] = vector.y ();
m_fields[2][3] = vector.z ();
}
cVector cMatrix::ApplyRotation (cVector vector)
{
cVector vectemp;
for (int i = 0; i < 3; i++)
vectemp.setField (i, m_fields[i][0] * vector.x () +
m_fields[i][1] * vector.y () +
m_fields[i][2] * vector.z ());
return vectemp;
}
void cGraphicsMFC::vectorToPixel(cVector position, int &xpix, int &ypix, Real &zbuff)
{
/* I have to use a viewercorrection like in cGraphicsMFC::pixelToVector*/
int tempx, tempy;
cVector viewercorrection = _matrix.lastColumn();
position += viewercorrection;
_realpixelconverter.realToPixel(position.x(), position.y(), &tempx, &tempy);
xpix = tempx;
ypix = tempy;
zbuff = 0.0;
}
float cVector::DotProduct (cVector vector)
{
return x () * vector.x () + y () * vector.y () + z () * vector.z ();
}
void cParticle::SetAcceleration (cVector vector)
{
vec_acc[0] = vector.x ();
vec_acc[1] = vector.y ();
vec_acc[2] = vector.z ();
}
void cParticle::Accelerate (cVector vector)
{
vec_speed[0] += vector.x ();
vec_speed[1] += vector.y ();
vec_speed[2] += vector.z ();
}