Creating the transform

Transforms are simple structures. A transform contains a position, rotation, and scale. Position and scale are vectors and rotation is a quaternion. Transforms can be combined hierarchically, but this parent-child relationship should not be a part of the actual transform structure. The following steps will guide you through creating a transform structure:

1. Create a new file, Transform.h. This file is required to declare the transform structure.
2. Begin declaring the Transform structure in this new file. Start with the properties of the transform—position, rotation, and scale:

   struct Transform {
       vec3 position;
       quat rotation;
       vec3 scale;

3. Create a constructor that takes a position, rotation, and scale. This constructor should assign these values to the appropriate members of the Transform struct:

   Transform(const vec3& p, const quat& r, const vec3& s) :
     ...