Turns depth-cueing on and off.
FORTRAN (libfgl.a)
void depthcue(Int32 mode)
SUBROUTINE DEPTHC(mode) LOGICAL mode;
The depthcue subroutine turns depth-cueing on or off. If the value of the mode parameter is TRUE, depth-cueing is enabled, and all lines, points, characters, and polygons drawn by the system are depth-cued. This means that the color of the lines, points, characters, or polygons are determined by the z values and the range of color indexes specified by the lshaderange or lRGBrange subroutine determines the color of the lines, points, characters, or polygons.
The z values, whose range is set by the lsetdepth subroutine, are mapped linearly into the range of color indexes. In this mode, lines that vary greatly in z value span the range of colors specified by the lshaderange subroutine.
For depth-cueing to work properly, the color map locations specified by the lshaderange subroutine must be loaded with a series of colors that gradually increase or decrease in intensity.
| mode | Specifies a value indicating OFF or ON state of depth-cueing. Values for the mode parameter are as follows: |
| 1 = True (ON) | |
| 0 = False (OFF) |
The example C language program depthcue.c uses the depthcue subroutine to turn on depth-cueing.
This subroutine is part of GL in the AIXwindows Environment/6000 Version 1, Release 2 with AIXwindows/3D Feature.
| /usr/include/gl/gl.h | Contains C language constant and variable type definitions for GL. |
| /usr/include/gl/fgl.h | Contains FORTRAN constant and variable type definitions for GL. |
Indicating whether depth-cue mode is on or off with the getdcm subroutine.
Setting the range of RGB colors used for depth-cueing with the lRGBrange subroutine.
Setting the viewport depth range with the lsetdepth subroutine.
Setting the range of color indexes used for depth-cueing with the lshaderange subroutine.
AIX Graphics Library Overview, Performing Depth-Cueing, and Working in Color Map and RGB Modes.