Explode Transform

Generates a three-dimensional (3-D) explosion effect. The faces of the 3-D model rotate and tumble as they move outward in the direction of their normal. The explosion characteristics and rotations are adjustable. The tumbling is optional.

Note To use this transform, you need to have Microsoft® DirectX® Media 6, 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_Explode
Globally unique identifier (GUID)	141DBAF1-55FB-11D1-B83E-00A0C933BE86
Programmatic identifier (ProgId)	DX3DTransform.Microsoft.Explode
Category identifier (CATID)	CATID_DX3DTransform
Custom interfaces	IExplode
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
Tumble	Boolean	TRUE	If TRUE, causes the faces to tumble as they move rather than maintain the orientation of their normal.
MaxRotations	integer	2	The maximum rotations of a face as the faces move away from their original positions. The actual number of rotations and the direction of the rotation for any given face is randomly selected.
FinalVelocity	float	2.0	Controls the speed of the faces as they move.
PositionJump	float	0.5	An initial displacement for all fragments at the start, causing the explosion to initially appear faster.
DecayTime	float	0.1	The decay time of the explosion. This controls how quickly the fragments slow down to the final velocity after the start of the explosion. This value must be greater than 0.

Remarks

The magnitude of the distance of each fragment from the original position is given by the following equation.
Delta = FinalVelocity * t + PositionJump +  PositionJump * e^(-t/DecayTime)
Where t is a number from 0.0 through 1.0.