D3DMXMatrixIdentity
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4/8/2010
This inline function returns the identity matrix in floating point format.
Syntax
D3DMXMATRIX* D3DMXMatrixIdentity(
D3DMXMATRIX* pOut
);
Parameters
- pOut
[in, out] Pointer to the D3DMXMATRIX structure that is the result of the operation.
Return Value
Pointer to a D3DMXMATRIX structure that is the identity matrix.
Remarks
The identity matrix is a matrix in which all coefficients are 0 except the [1,1][2,2][3,3][4,4] coefficients, which are set to 1. The identity matrix is special in that when it is applied to vertices, they are unchanged. The identity matrix is used as the starting point for matrices that will modify vertex values to create rotations, translations, and any other transformations that can be represented by a 4 ×4 matrix.
The return value for this function is the same value returned in the pOut parameter. In this way, the D3DMXMatrixIdentity function can be used as a parameter for another function.
Requirements
| Header | d3dmx.h |
| Library | Implemented in d3dmxmath.inl |
| Windows Embedded CE | Windows Embedded CE 6.0 and later |
| Windows Mobile | Pocket PC for Windows Mobile Version 5.0 and later, Smartphone for Windows Mobile Version 5.0 and later |