xfpt(3G)							      xfpt(3G)

NAME    [Toc]    [Back]

     xfpt, xfpti, xfpts, xfpt2,	xfpt2i,	xfpt2s,	xfpt4, xfpt4i, xfpt4s -
     multiplies	a point	by the current matrix in feedback mode

C SPECIFICATION    [Toc]    [Back]

     void xfpt(x, y, z)
     Coord x, y, z;

     void xfpti(x, y, z)
     Icoord x, y, z;

     void xfpts(x, y, z)
     Scoord x, y, z;

     void xfpt2(x, y)
     Coord x, y;

     void xfpt2i(x, y)
     Icoord x, y;

     void xfpt2s(x, y)
     Scoord x, y;

     void xfpt4(x, y, z, w)
     Coord x, y, z, w;

     void xfpt4i(x, y, z, w)
     Icoord x, y, z, w;

     void xfpt4s(x, y, z, w)
     Scoord x, y, z, w;

PARAMETERS    [Toc]    [Back]

     x	 expects the x coordinate of a point.

     y	 expects the y coordinate of a point.

     z	 expects the z coordinate of a point.  Used only by the	3-D and	4-D
	 versions of the routines; 0.0 is assumed by the others.

     w	 expects the w coordinate of a point Used only by the 4-D version of
	 the routines; 1.0 is assumed by the others.

DESCRIPTION    [Toc]    [Back]

     xfpt multiplies the specified point (x, y,	0.0, 1.0), (x, y, z, 1.0), or
     (x, y, z, w) by the current matrix	in the Geometry	Pipeline.  The 4-D
     result is not clipped or scaled, and is placed in the feedback buffer.

SEE ALSO    [Toc]    [Back]

     Graphics Library Programming Guide, Feedback Mode





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xfpt(3G)							      xfpt(3G)

NOTES    [Toc]    [Back]

     This routine is available only in feedback	mode; otherwise	it is ignored.

     This routine functions only on IRIS-4D B and G models, and	we advise
     against its use for new development.

     The processor can access full words only on full-word boundaries.	xfpt
     does not guarantee	such alignment.	 See the Graphics Library Programming
     Guide, Feedback Mode, for information on successful alignment.


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