D3DXVec3Unproject

Projects a vector from screen space into object space.

D3DXVECTOR3 * D3DXVec3Unproject(
  D3DXVECTOR3 * pOut,
  CONST D3DXVECTOR3 * pV,
  CONST D3DVIEWPORT9 * pViewport,
  CONST D3DXMATRIX * pProjection,
  CONST D3DXMATRIX * pView,
  CONST D3DXMATRIX * pWorld
);

Parameters

pOut

[in, out] Pointer to the D3DXVECTOR3 structure that is the result of the operation.

pV

[in] Pointer to the source D3DXVECTOR3 structure.

pViewport

[in] Pointer to a D3DVIEWPORT9 structure, representing the viewport.

pProjection

[in] Pointer to a D3DXMATRIX structure, representing the projection matrix.

pView

[in] Pointer to a D3DXMATRIX structure, representing the view matrix.

pWorld

[in] Pointer to a D3DXMATRIX structure, representing the world matrix.

Return Values

Pointer to a D3DXVECTOR3 structure that is the vector projected from screen space to object space.

Remarks

The return value for this function is the same value returned in the pOut parameter. In this way, the D3DXVec3Unproject function can be used as a parameter for another function.

Requirements

Header: Declared in D3dx9math.h.

See Also

D3DXVec3Project