NAME

depthcue - turns on and off depth-cue mode

SPECIFICATION

C
depthcue(mode)
Boolean mode;

FORTRAN
subroutine depthc(mode)
logical mode

Pascal
procedure depthcue(mode: Boolean);

DESCRIPTION

depthcue sets the current depth cue mode. If mode is TRUE all line and points drawn will be drawn depth cued. This means that the color of the lines and points is determined from their z values and the range of color indices specified by shaderange.  The z values, whose range is set by the setdepth command, are mapped linearly into the range of color indices.  In this mode, lines with large delta z’s will span the full range of colors, typically appearing bright at one end and dim at the other. 

In order for depth cueing to work properly the color map locations in the range specified by shaderange must be loaded with a series of colors gradually increasing or decreasing in intensity. 

SEE ALSO

setdepth, shaderange

Version 2.4  —  May 08, 1986