public static XMVector RotationAxis(XMVector axis, float angle)
{
Debug.Assert(!XMVector3.Equal(axis, XMGlobalConstants.Zero), "Reviewed");
Debug.Assert(!XMVector3.IsInfinite(axis), "Reviewed");
XMVector normal = XMVector3.Normalize(axis);
return(XMQuaternion.RotationNormal(normal, angle));
}
public static XMVector FromPoints(XMVector point1, XMVector point2, XMVector point3)
{
XMVector v21 = XMVector.Subtract(point1, point2);
XMVector v31 = XMVector.Subtract(point1, point3);
XMVector n = XMVector3.Cross(v21, v31);
n = XMVector3.Normalize(n);
XMVector d = XMPlane
.DotNormal(n, point1)
.Negate();
return(XMVector.Select(d, n, XMGlobalConstants.Select1110));
}
