D3DXMatrixPerspectiveLH function

Builds a left-handed perspective projection matrix

Syntax

D3DXMATRIX* D3DXMatrixPerspectiveLH(
  _Inout_ D3DXMATRIX *pOut,
  _In_    FLOAT      w,
  _In_    FLOAT      h,
  _In_    FLOAT      zn,
  _In_    FLOAT      zf
);

Parameters

pOut [in, out]

Type: D3DXMATRIX*

Pointer to the D3DXMATRIX structure that is the result of the operation.

w [in]

Type: FLOAT

Width of the view volume at the near view-plane.

h [in]

Type: FLOAT

Height of the view volume at the near view-plane.

zn [in]

Type: FLOAT

Z-value of the near view-plane.

zf [in]

Type: FLOAT

Z-value of the far view-plane.

Return value

Type: D3DXMATRIX*

Pointer to a D3DXMATRIX structure that is a left-handed perspective projection matrix.

Remarks

All the parameters of the D3DXMatrixPerspectiveLH 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 D3DXMatrixPerspectiveLH function can be used as a parameter for another function.

This function uses the following formula to compute the returned matrix.

2*zn/w  0       0              0
0       2*zn/h  0              0
0       0       zf/(zf-zn)     1
0       0       zn*zf/(zn-zf)  0

Requirements

Header
D3dx9math.h
Library
D3dx9.lib

See also

Math Functions

D3DXMatrixPerspectiveRH

D3DXMatrixPerspectiveFovRH

D3DXMatrixPerspectiveFovLH

D3DXMatrixPerspectiveOffCenterRH

D3DXMatrixPerspectiveOffCenterLH