Spin Transform

Textures an image onto a three-dimensional (3-D) sheet and spins that sheet around a specified axis. If there is only one image input, it is textured onto both sides of the sheet. If there are two image inputs, the first is textured onto a forward facing sheet and the second is textured onto a backward facing sheet. The dimensions of the sheet have the same aspect ratio as the images, with their longer extent spanning the range [-1,1]. The sheets are centered at the origin in the x-y plane. Only the forward facing sheet shows, even when the backward facing sheet has a larger size.

You can also specify the number of 180-degree rotations that the sheet makes around the axis.

Note To use this transform, you need to have Microsoft Windows® 98 Second Edition or Windows 2000 installed.

Transform Specifications

The following table contains the information you need in order to use this transform in C++ and script.

Class identifier (CLSID)	CLSID_Spin
Globally unique identifier (GUID)	3D2807C2-43DE-11D2-9900-0000F803FF7A
Programmatic identifier (ProgId)	DX3DTransform.Microsoft.Spin
Category identifier (CATID)	CATID_DX3DTransform
Custom interfaces	IDXTSpin
Supported interfaces	IDXEffect
Inputs	One required of type Direct3DRMMeshBuilder3.
Output	Direct3DRMMeshBuilder3

Custom Properties

The following table lists the custom properties that control the transform output.

Property	Type	Default	Description
SpinX	float	0.0	The x-component of the spin vector.
SpinY	float	1.0	The y-component of the spin vector.
SpinZ	float	0.0	The z-component of the spin vector.
Flips	integer	1	The number of 180-degree spins.