OGSF library - manipulating surfaces (lower level functions) More...
Go to the source code of this file.
Functions | |
| void | gsdiff_set_SDscale (float scale) |
| Set scale. More... | |
| float | gsdiff_get_SDscale (void) |
| Get scale. More... | |
| void | gsdiff_set_SDref (geosurf *gsref) |
| ADD. More... | |
| geosurf * | gsdiff_get_SDref (void) |
| ADD. More... | |
| float | gsdiff_do_SD (float val, int offset) |
| ADD. More... | |
Detailed Description
OGSF library - manipulating surfaces (lower level functions)
GRASS OpenGL gsurf OGSF Library
Routines to set up automatic on-the-fly recalculation of surface elevations, doing a "scaled difference" using another surface for reference
Note that we're using a true difference here, between data set values, no translations, etc.
- Todo:
- generalize this concept to allow transform functions which are dependent on surfaces that are dependent on other surfaces, etc., as long as the dependency doesn't loop back.
(C) 1999-2008 by the GRASS Development Team
This program is free software under the GNU General Public License (>=v2). Read the file COPYING that comes with GRASS for details.
Definition in file gsdiff.c.
Function Documentation
◆ gsdiff_do_SD()
| float gsdiff_do_SD | ( | float | val, |
| int | offset | ||
| ) |
ADD.
- Parameters
-
val offset
- Returns
- value
Definition at line 94 of file gsdiff.c.
References GET_MAPATT.
Referenced by gs_get_att_typbuff(), and gsd_wire_surf_const().
◆ gsdiff_get_SDref()
| geosurf* gsdiff_get_SDref | ( | void | ) |
ADD.
- Returns
- pointer to geosurf struct
Definition at line 77 of file gsdiff.c.
References NULL.
Referenced by gs_get_att_typbuff(), GS_get_SDsurf(), and gsd_wire_surf_const().
◆ gsdiff_get_SDscale()
| float gsdiff_get_SDscale | ( | void | ) |
◆ gsdiff_set_SDref()
| void gsdiff_set_SDref | ( | geosurf * | gsref | ) |
ADD.
- Parameters
-
gsref
Definition at line 64 of file gsdiff.c.
References ATT_TOPO, and gs_get_att_typbuff().
Referenced by GS_set_SDsurf(), and GS_unset_SDsurf().
