public Vertex3D MultiplyMatrixNoTranslate(Vertex3D v)
{
// Transform it through the current matrix set
var xp = _11 * v.X + _21 * v.Y + _31 * v.Z;
var yp = _12 * v.X + _22 * v.Y + _32 * v.Z;
var zp = _13 * v.X + _23 * v.Y + _33 * v.Z;
return(v.Set(xp, yp, zp));
}
public Vertex3D MultiplyMatrix(Vertex3D v)
{
// Transform it through the current matrix set
var xp = _11 * v.X + _21 * v.Y + _31 * v.Z + _41;
var yp = _12 * v.X + _22 * v.Y + _32 * v.Z + _42;
var zp = _13 * v.X + _23 * v.Y + _33 * v.Z + _43;
var wp = _14 * v.X + _24 * v.Y + _34 * v.Z + _44;
var invWp = 1.0f / wp;
return(v.Set(xp * invWp, yp * invWp, zp * invWp));
}
public Vertex3D MultiplyMatrix(Vertex3D v)
{
// Transform it through the current matrix set
var xp = ((((_11 * v.X) + (_21 * v.Y)) + (_31 * v.Z)) + _41);
var yp = ((((_12 * v.X) + (_22 * v.Y)) + (_32 * v.Z)) + _42);
var zp = ((((_13 * v.X) + (_23 * v.Y)) + (_33 * v.Z)) + _43);
var wp = ((((_14 * v.X) + (_24 * v.Y)) + (_34 * v.Z)) + _44);
var invWp = (1.0f / wp);
return(v.Set(xp * invWp, yp * invWp, zp * invWp));
}
public static void Reset(Vertex3D v)
{
v.Set(0, 0, 0);
}
