IDirect3DRMInterpolator Interface

Interpolators provide a way of storing actions and applying them to objects with automatic calculation of in-between values. For example, you can set a scene's background color to red at time zero and green at time ten, and the interpolator will automatically tint successive scenes to blend from red to green. With an interpolator, you can blend colors, move objects smoothly between positions, morph meshes, and perform many other transformations.

In the Direct3D Retained-Mode implementation, interpolators are a generalization of the IDirect3DRMAnimation interface that increases the kinds of object parameters you can animate. While the IDirect3DRMAnimation interface allows animation of an object's position, size and orientation, the IDirect3DRMInterpolator interface further enables animation of colors, meshes, textures, and materials.