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vpTracePixel(3)		   Library Functions Manual	       vpTracePixel(3)

NAME
       vpTracePixel - print a trace of the voxels composited into a pixel

SYNOPSIS
       #include	<volpack.h>

       vpResult
       vpTracePixel(vpc, trace_u, trace_v)
	   vpContext *vpc;
	   int trace_u,	trace_v;

ARGUMENTS
       vpc    VolPack context from vpCreateContext.

       trace_u,	trace_v
	      Intermediate image coordinates of	the pixel to trace.

DESCRIPTION
       This  routine  is for debugging the rendering algorithms.  If (trace_u,
       trace_v)	is a valid set of coordinates in the intermediate image	then a
       printout	 appears during	rendering showing a trace of all of the	voxels
       that contribute to the pixel.  The intermediate image is	not  the  same
       as the final image; see vpGetvpSetImage(3).

       The  VolPack  library must be compiled with the -DDEBUG compiler	option
       for this	function to have any effect.

SEE ALSO
       VolPack(3)

VolPack							       vpTracePixel(3)
NAME | SYNOPSIS | ARGUMENTS | DESCRIPTION | SEE ALSO

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