# G2_SetBG3Affine

## C Specification

      #include <nitro/gx/g2.h>

      void G2_SetBG3Affine(
          const MtxFx22 * mtx,
          int centerX,
          int centerY,
          int x1,
          int y1
      );

## Arguments

`mtx` | Conversion matrix xyxyxy
`centerX` | x-component of the coordinates of the center of rotation
`centerY` | y-component of the coordinates of the center of rotation
`x1` | x-component of the coordinates before rotation
`y1` | y-component of the coordinates before rotation

## Return Values

None.

## Description

This function sets the BG3 affine transformation. The point `(x2, y2)` after affine transformation is obtained with the following formula:

## See Also

G2_SetBG2Affine

## Revision History

01/19/2004 Initial version.

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