gsd_cplane.c File Reference

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

#include <grass/gstypes.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. More...
void	gsd_update_cplanes (void)
	Update cplaces. More...
void	gsd_cplane_on (int num)
	ADD. More...
void	gsd_cplane_off (int num)
	Turn off clip plane. More...
void	gsd_get_cplanes_state (int *onstate)
	Get cplane state. More...
int	gsd_get_cplanes (Point4 *planes)
	Get cplaces. More...
void	gsd_update_cpnorm (int num)
	ADD. More...
void	gsd_cplane_setrot (int num, float rx, float ry, float rz)
	ADD. More...
void	gsd_cplane_settrans (int num, float tx, float ty, float tz)
	ADD. More...
void	gsd_draw_cplane_fence (geosurf *surf1, geosurf *surf2, int cpnum)
	ADD. More...
void	gsd_draw_cplane (int num)
	Draw cplane. More...

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

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_set_clipplane(), and num.

Referenced by GS_draw_lighting_model(), and GS_unset_cplane().

void gsd_cplane_on

(

int

num

)

ADD.

Parameters

num

Definition at line 104 of file gsd_cplane.c.

References first, gsd_def_cplane(), gsd_set_clipplane(), and num.

Referenced by GS_draw_lighting_model(), and GS_set_cplane().

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_def_cplane(), gsd_update_cpnorm(), num, X, and Y.

Referenced by GS_set_cplane_rot().

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_def_cplane(), num, X, and Y.

Referenced by GS_set_cplane_trans().

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(), and gsd_def_clipplane().

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

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_endpolygon(), gsd_popmatrix(), gsd_pushmatrix(), gsd_rot(), gsd_scale(), gsd_set_clipplane(), gsd_translate(), gsd_vert_func(), gsd_zwritemask(), tools::size, X, and Y.

Referenced by GS_draw_cplane().

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_set_clipplane(), gsd_wall(), VROW2Y, X, and Y.

Referenced by GS_draw_cplane(), and GS_draw_cplane_fence().

int gsd_get_cplanes

(

Point4 *

planes

)

Get cplaces.

Planes MUST be big enough to hold MAX_CPLANES Point4s

Parameters

places

surface coordinates, normal pointing away from visible side

Returns

ADD

Definition at line 162 of file gsd_cplane.c.

References X, and Y.

Referenced by gs_setlos_enterdata().

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.

Referenced by GS_alldraw_cplane_fences(), and GS_draw_lighting_model().

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().

Referenced by gsd_set_view().

void gsd_update_cpnorm

(

int

num

)

ADD.

Parameters

num

Definition at line 188 of file gsd_cplane.c.

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

Referenced by gsd_cplane_setrot().