gvld.c File Reference

OGSF library - loading and manipulating volumes (lower level functions) More...

#include <math.h>
#include <grass/gis.h>
#include <grass/ogsf.h>
#include "mc33_table.h"

Include dependency graph for gvld.c:

Go to the source code of this file.

Macros
#define	READ()   gvl_read_char(pos[i]++, gvl->isosurf[i]->data)
#define	DISTANCE_2(x1, y1, x2, y2)    sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2))

Functions
int	gvld_vol (geovol *gvl)
	Draw volume set (slices and isosurfaces)
int	gvld_wire_vol (geovol *gvl)
	Draw volume in wire mode (bounding box)
int	gvld_isosurf (geovol *gvl)
	Draw volume isosurfaces.
int	gvld_wire_isosurf (geovol *gvl)
	Draw volume isosurface in draw mode.
int	gvld_slices (geovol *gvl)
	Draw slices.
int	gvld_slice (geovol *gvl, int ndx)
	Draw slice.
int	gvld_wire_slices (geovol *gvl)
	Draw wire slices.
int	gvld_wind3_box (geovol *gvl)
	Draw volume bounding box.

Detailed Description

OGSF library - loading and manipulating volumes (lower level functions)

GRASS OpenGL gsurf OGSF Library

(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.

Author

Tomas Paudits (February 2004)

Doxygenized by Martin Landa <landa.martin gmail.com> (May 2008)

Definition in file gvld.c.

Macro Definition Documentation

DISTANCE_2

#define DISTANCE_2	(		x1,
			y1,
			x2,
			y2
	)		sqrt((x1 - x2) * (x1 - x2) + (y1 - y2) * (y1 - y2))

Definition at line 433 of file gvld.c.

READ

#define READ

(

)

gvl_read_char(pos[i]++, gvl->isosurf[i]->data)

Definition at line 28 of file gvld.c.

Function Documentation

gvld_isosurf()

int gvld_isosurf

(

geovol *

gvl

)

Draw volume isosurfaces.

Parameters

gvl	pointer to geovol struct

Returns

-1 on failure

1 on success

Definition at line 92 of file gvld.c.

References geovol_isosurf::att, ATT_COLOR, ATT_EMIT, ATT_SHINE, geovol_isosurf_att::att_src, ATT_TRANSP, b, cell_table, CM_DIFFUSE, CONST_ATT, geovol_isosurf_att::constant, DM_GOURAUD, CELL_ENTRY::edges, g, G_debug(), G_free(), G_malloc, GS_check_cancel(), GS_get_scale(), gsd_bgnpolygon(), gsd_blend(), gsd_colormode(), gsd_do_scale(), gsd_endpolygon(), gsd_getwindow(), gsd_litvert_func(), gsd_popmatrix(), gsd_pushmatrix(), gsd_set_material(), gsd_shademodel(), gsd_translate(), gsd_zwritemask(), gvl_file_get_name(), MAP_ATT, CELL_ENTRY::nedges, CELL_ENTRY::npolys, CELL_ENTRY::polys, r, READ, X, x, Y, and Z.

Referenced by gvld_vol().

gvld_slice()

int gvld_slice	(	geovol *	gvl,
		int	ndx
	)

Draw slice.

Parameters

gvl	pointer to geovol struct
ndx

Returns

1

Definition at line 500 of file gvld.c.

References geovol_slice::data, geovol_slice::dir, DISTANCE_2, gsd_bgntmesh(), gsd_blend(), gsd_endtmesh(), gsd_litvert_func(), gsd_zwritemask(), r, geovol_slice::transp, X, x, geovol_slice::x1, geovol_slice::x2, Y, geovol_slice::y1, geovol_slice::y2, Z, geovol_slice::z1, and geovol_slice::z2.

Referenced by gvld_slices().

gvld_slices()

int gvld_slices

(

geovol *

gvl

)

Draw slices.

Parameters

gvl	pointer to geovol struct

Returns

0

Definition at line 443 of file gvld.c.

References CM_COLOR, DM_GOURAUD, G_debug(), GS_get_scale(), gsd_blend(), gsd_colormode(), gsd_do_scale(), gsd_getwindow(), gsd_popmatrix(), gsd_pushmatrix(), gsd_set_material(), gsd_shademodel(), gsd_translate(), gsd_zwritemask(), and gvld_slice().

Referenced by gvld_vol().

gvld_vol()

int gvld_vol

(

geovol *

gvl

)

Draw volume set (slices and isosurfaces)

Parameters

gvl	pointer to geovol struct

Returns

-1 on failure

1 on success

Definition at line 38 of file gvld.c.

References G_debug(), gvl_isosurf_calc(), gvl_slices_calc(), gvld_isosurf(), and gvld_slices().

Referenced by GVL_draw_vol().

gvld_wind3_box()

int gvld_wind3_box

(

geovol *

gvl

)

Draw volume bounding box.

Parameters

gvl	pointer to geovol struct

Returns

0

Definition at line 787 of file gvld.c.

References CM_COLOR, DM_FLAT, G_debug(), gsd_bgnline(), gsd_color_func(), gsd_colormode(), gsd_do_scale(), gsd_endline(), gsd_linewidth(), gsd_popmatrix(), gsd_pushmatrix(), gsd_shademodel(), gsd_translate(), gsd_vert_func(), X, Y, and Z.

Referenced by GVL_draw_vol(), and gvld_wire_vol().

gvld_wire_isosurf()

int gvld_wire_isosurf

(

geovol *

gvl

)

Draw volume isosurface in draw mode.

Parameters

gvl	pointer to geovol struct [unused]

Returns

0

Definition at line 423 of file gvld.c.

Referenced by gvld_wire_vol().

gvld_wire_slices()

int gvld_wire_slices

(

geovol *

gvl

)

Draw wire slices.

Parameters

gvl	pointer to geovol struct

Returns

0

Definition at line 678 of file gvld.c.

References CM_COLOR, geovol_slice::dir, DM_FLAT, G_debug(), gsd_bgnline(), gsd_color_func(), gsd_colormode(), gsd_do_scale(), gsd_endline(), gsd_linewidth(), gsd_popmatrix(), gsd_pushmatrix(), gsd_set_material(), gsd_shademodel(), gsd_translate(), gsd_vert_func(), X, geovol_slice::x1, geovol_slice::x2, Y, geovol_slice::y1, geovol_slice::y2, Z, geovol_slice::z1, and geovol_slice::z2.

Referenced by gvld_wire_vol().

gvld_wire_vol()

int gvld_wire_vol

(

geovol *

gvl

)

Draw volume in wire mode (bounding box)

Parameters

gvl	pointer to geovol struct

Returns

-1 on failure

1 on success

Definition at line 69 of file gvld.c.

References G_debug(), gvld_wind3_box(), gvld_wire_isosurf(), and gvld_wire_slices().

Referenced by GVL_draw_wire().