Transition from Unity Engine to Unity Mathematics
Multiplication
Instead of using the * operator when multiplying vectors and matrices, use the math.mul method.
# Engine
Vector3 x = new Vector3(1, 2, 3);
Vector3 y = new Vector3(4, 5, 6);
Vector3 z = x * y;
# Mathematics
float3 x = new float3(1, 2, 3);
float3 y = new float3(4, 5, 6);
float3 z = math.mul(x, y);
Quaternion
Mathematics quaternion are stored in radian values.
Methods Ownership
Many class / struct methods, has inverting matrices, are now static methods part of the math library. We also added a few in HPMath.
# Engine
Quaternion rot = Quaternion.Euler(30, 0, 0);
Matrix4x4 m = Matrix4x4.TRS(Vector3.zero, rot, Vector3.one);
Matrix4x4 inv = m.inverse;
# Mathematics
quaternion rot = HPMath.EulerZXYDegrees(30, 0, 0);
double4x4 m = HPMath.TRS(double3.zero, rot, new float3(1f);
Matrix4x4 inv = math.inverse(m);
Normalization
You can normalize a double3 with math.normalize method, but if you want the same behaviour you had with Unity Engine, you must use math.normalizesafe.