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man pages->IRIX man pages -> standard/xfpt (3)
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### Contents

```
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.
```

```     Graphics Library Programming Guide, Feedback Mode

Page 1

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.

PPPPaaaaggggeeee 2222```
[ Back ]
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