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D3DXMatrixOrthoLH function (D3DX10Math.h) - Builds a left-handed orthographic projection matrix. |
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D3DXMatrixOrthoLH function (D3DX10Math.h) |
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05/31/2018 |
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Note
The D3DX10 utility library is deprecated. We recommend that you use DirectXMath instead.
Builds a left-handed orthographic projection matrix.
D3DXMATRIX* D3DXMatrixOrthoLH(
_Inout_ D3DXMATRIX *pOut,
_In_ FLOAT w,
_In_ FLOAT h,
_In_ FLOAT zn,
_In_ FLOAT zf
);-
pOut [in, out]
-
Type: D3DXMATRIX*
Pointer to the resulting D3DXMATRIX.
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w [in]
-
Type: FLOAT
Width of the view volume.
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h [in]
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Type: FLOAT
Height of the view volume.
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zn [in]
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Type: FLOAT
Minimum z-value of the view volume which is referred to as z-near.
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zf [in]
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Type: FLOAT
Maximum z-value of the view volume which is referred to as z-far.
Type: D3DXMATRIX*
Pointer to the resulting D3DXMATRIX.
All the parameters of the D3DXMatrixOrthoLH function are distances in camera space. The parameters describe the dimensions of the view volume.
The return value for this function is the same value returned in the pOut parameter. In this way, the D3DXMatrixOrthoLH function can be used as a parameter for another function.
This function uses the following formula to compute the returned matrix.
2/w 0 0 0
0 2/h 0 0
0 0 1/(zf-zn) 0
0 0 zn/(zn-zf) 1
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