gsd_cplane.c File Reference

OGSF library - manipulating surfaces (lower level functions). More...

#include <grass/ogsf.h>
#include "rowcol.h"

Include dependency graph for gsd_cplane.c:

Go to the source code of this file.

Functions
void	gsd_def_cplane (int num, float *pt, float *norm)
	Define cplace.
void	gsd_update_cplanes (void)
	Update cplaces.
void	gsd_cplane_on (int num)
	ADD.
void	gsd_cplane_off (int num)
	Turn off clip plane.
void	gsd_get_cplanes_state (int *onstate)
	Get cplane state.
int	gsd_get_cplanes (Point4 *planes)
	Get cplaces.
void	gsd_update_cpnorm (int num)
	ADD.
void	gsd_cplane_setrot (int num, float rx, float ry, float rz)
	ADD.
void	gsd_cplane_settrans (int num, float tx, float ty, float tz)
	ADD.
void	gsd_draw_cplane_fence (geosurf *surf1, geosurf *surf2, int cpnum)
	ADD.
void	gsd_draw_cplane (int num)
	Draw cplane.

Detailed Description

OGSF library - manipulating surfaces (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

Bill Brown USACERL, GMSL/University of Illinois (January 1993)

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

Definition in file gsd_cplane.c.

Function Documentation

gsd_cplane_off()

void gsd_cplane_off

(

int

num

)

Turn off clip plane.

Parameters

num

cplane id

Definition at line 126 of file gsd_cplane.c.

References gsd_cplane_off(), and gsd_set_clipplane().

Referenced by GS_draw_lighting_model(), GS_unset_cplane(), and gsd_cplane_off().

gsd_cplane_on()

void gsd_cplane_on

(

int

num

)

ADD.

Parameters

num

Definition at line 104 of file gsd_cplane.c.

References gsd_cplane_on(), gsd_def_cplane(), and gsd_set_clipplane().

Referenced by GS_draw_lighting_model(), GS_set_cplane(), and gsd_cplane_on().

gsd_cplane_setrot()

void gsd_cplane_setrot	(	int	num,
		float	rx,
		float	ry,
		float	rz )

ADD.

Parameters

num
rx,ry,rz

Definition at line 211 of file gsd_cplane.c.

References gsd_cplane_setrot(), gsd_def_cplane(), gsd_update_cpnorm(), X, and Y.

Referenced by GS_set_cplane_rot(), and gsd_cplane_setrot().

gsd_cplane_settrans()

void gsd_cplane_settrans	(	int	num,
		float	tx,
		float	ty,
		float	tz )

ADD.

Parameters

num
tx,ty,tz

Definition at line 229 of file gsd_cplane.c.

References gsd_cplane_settrans(), gsd_def_cplane(), X, and Y.

Referenced by GS_set_cplane_trans(), and gsd_cplane_settrans().

gsd_def_cplane()

void gsd_def_cplane	(	int	num,
		float *	pt,
		float *	norm )

Define cplace.

Parameters

num
pt
norm

Definition at line 55 of file gsd_cplane.c.

References GS_dv3norm(), GS_get_scale(), GS_get_zrange(), gsd_def_clipplane(), and gsd_def_cplane().

Referenced by gsd_cplane_on(), gsd_cplane_setrot(), gsd_cplane_settrans(), gsd_def_cplane(), and gsd_update_cplanes().

gsd_draw_cplane()

void gsd_draw_cplane

(

int

num

)

Draw cplane.

Parameters

num

Definition at line 296 of file gsd_cplane.c.

References GS_default_draw_color(), GS_get_longdim(), GS_global_exag(), gsd_bgnpolygon(), gsd_blend(), gsd_color_func(), gsd_do_scale(), gsd_draw_cplane(), gsd_endpolygon(), gsd_popmatrix(), gsd_pushmatrix(), gsd_rot(), gsd_scale(), gsd_set_clipplane(), gsd_translate(), gsd_vert_func(), gsd_zwritemask(), X, and Y.

Referenced by GS_draw_cplane(), and gsd_draw_cplane().

gsd_draw_cplane_fence()

void gsd_draw_cplane_fence	(	geosurf *	surf1,
		geosurf *	surf2,
		int	cpnum )

ADD.

Parameters

surf1	first surface (geosurf)
surf2	second surface (geosurf) [unused]
cpnum

Definition at line 247 of file gsd_cplane.c.

References GS_P2distance(), GS_v3norm(), gsd_draw_cplane_fence(), gsd_set_clipplane(), gsd_wall(), VROW2Y, X, and Y.

Referenced by GS_draw_cplane(), GS_draw_cplane_fence(), and gsd_draw_cplane_fence().

gsd_get_cplanes()

int gsd_get_cplanes

(

Point4 *

planes

)

Get cplaces.

Planes MUST be big enough to hold MAX_CPLANES Point4s

Parameters

planes

surface coordinates, normal pointing away from visible side

Returns

ADD

Definition at line 162 of file gsd_cplane.c.

References gsd_get_cplanes(), X, and Y.

Referenced by gs_setlos_enterdata(), and gsd_get_cplanes().

gsd_get_cplanes_state()

void gsd_get_cplanes_state

(

int *

onstate

)

Get cplane state.

onstate MUST be big enough to hold MAX_CPLANES ints

Parameters

onstate

Definition at line 142 of file gsd_cplane.c.

References gsd_get_cplanes_state().

Referenced by GS_alldraw_cplane_fences(), GS_draw_lighting_model(), and gsd_get_cplanes_state().

gsd_update_cplanes()

void gsd_update_cplanes

(

void

)

Update cplaces.

Called when viewing matrix changes

Definition at line 86 of file gsd_cplane.c.

References gsd_def_cplane(), and gsd_update_cplanes().

Referenced by gsd_set_view(), and gsd_update_cplanes().

gsd_update_cpnorm()

void gsd_update_cpnorm

(

int

num

)

ADD.

Parameters

num

Definition at line 188 of file gsd_cplane.c.

References gsd_update_cpnorm(), P_popmatrix(), P_pushmatrix(), P_rot(), P_transform(), X, and Y.

Referenced by gsd_cplane_setrot(), and gsd_update_cpnorm().