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)