GRASS cairo display driver - draw raster. More...
Go to the source code of this file.
Macros | |
| #define | MAX_IMAGE_SIZE 32767 |
Functions | |
| void | Cairo_begin_raster (int mask, int s[2][2], double d[2][2]) |
| Start drawing raster. | |
| int | Cairo_raster (int n, int row, const unsigned char *red, const unsigned char *grn, const unsigned char *blu, const unsigned char *nul) |
| Draw raster row. | |
| void | Cairo_end_raster (void) |
| Finish drawing raster. | |
Detailed Description
GRASS cairo display driver - draw raster.
(C) 2007-2014 by Lars Ahlzen and 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 cairodriver/raster.c.
Macro Definition Documentation
◆ MAX_IMAGE_SIZE
| #define MAX_IMAGE_SIZE 32767 |
Definition at line 21 of file cairodriver/raster.c.
Referenced by Cairo_begin_raster().
Function Documentation
◆ Cairo_begin_raster()
| void Cairo_begin_raster | ( | int | mask, |
| int | s[2][2], | ||
| double | d[2][2] ) |
Start drawing raster.
- Todo
- are top and left swapped?
- Parameters
-
mask non-zero int for mask s source (map) extent (left, right, top, bottom) d destination (image) extent (left, right, top, bottom)
Definition at line 71 of file cairodriver/raster.c.
References ca, G_debug(), G_fatal_error(), and MAX_IMAGE_SIZE.
Referenced by Cairo_Driver().
◆ Cairo_end_raster()
| void Cairo_end_raster | ( | void | ) |
Finish drawing raster.
Definition at line 180 of file cairodriver/raster.c.
References ca, cairo, G_debug(), and G_free().
Referenced by Cairo_Driver().
◆ Cairo_raster()
| int Cairo_raster | ( | int | n, |
| int | row, | ||
| const unsigned char * | red, | ||
| const unsigned char * | grn, | ||
| const unsigned char * | blu, | ||
| const unsigned char * | nul ) |
