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D3DXColorLerp function

Uses linear interpolation to create a color value.

Syntax


D3DXCOLOR* D3DXColorLerp(
  _Inout_       D3DXCOLOR *pOut,
  _In_    const D3DXCOLOR *pC1,
  _In_    const D3DXCOLOR *pC2,
  _In_          FLOAT     s
);

Parameters

pOut [in, out]

Type: D3DXCOLOR*

Pointer to a D3DXCOLOR structure that is the result of the operation.

pC1 [in]

Type: const D3DXCOLOR*

Pointer to a source D3DXCOLOR structure.

pC2 [in]

Type: const D3DXCOLOR*

Pointer to a source D3DXCOLOR structure.

s [in]

Type: FLOAT

Parameter that linearly interpolates between the colors, pC1 and pC2, treating them both as 4D vectors. There are no limits on the value of s.

Return value

Type: D3DXCOLOR*

This function returns a pointer to a D3DXCOLOR structure that is the result of the linear interpolation.

Remarks

The return value for this function is the same value returned in the pOut parameter. In this way, the D3DXColorLerp function can be used as a parameter for another function.

This function interpolates the red, green, blue, and alpha components of a D3DXCOLOR structure between two colors, as shown in the following example.


   
pOut->r = pC1->r + s * (pC2->r - pC1->r);


If you are linearly interpolating between the colors A and B, and s is 0, the resulting color is A. If s is 1, the resulting color is color B.

Requirements

Header

D3dx9math.h

Library

D3dx9.lib

See also

D3DXColorModulate
D3DXColorNegative
D3DXColorScale

 

 

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