depthc(3G)depthc(3G)NAMEdepthc - turns depth-cue mode on and off
FORTRAN 77 SPECIFICATION
subroutine depthc(mode)
logical mode
PARAMETERS
mode expects either .TRUE. or .FALSE..
.TRUE. turns depthcue mode on.
.FALSE. turns depthcue mode off.
DESCRIPTIONdepthc turns depth-cue mode on or off. If depth-cue mode is on, all
lines, points, characters, and polygons are drawn depth-cued. This means
only the z values and the range of color values specified by lshade or
lRGBra determine the color of the lines, points, characters, or polygons.
The z values, whose range is set by lsetde, are mapped linearly into the
range of color values. In this mode, lines that vary greatly in z value
span the range of colors specified by lshade or lRGBra.
In color index mode, the color map entries specified by lshader should be
loaded with a series of colors that gradually increase or decrease in
intensity.
SEE ALSO
lRGBra, lsetde, lshade
BUGS
On Impact depthc does not work in Color Index mode. It will always force
GOURAU, shading to be on. On Impact and Infinite Reality depthc will not
work with a singular MPROJE matrix.
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