OGSF library - objects management (lower level functions) More...

#include <stdlib.h>
#include <string.h>
#include <grass/gis.h>
#include <grass/ogsf.h>
#include "gsget.h"
#include "math.h"
#include "rowcol.h"

Include dependency graph for gsd_objs.c:

Go to the source code of this file.

Macros
#define	ONORM .57445626

#define	UP_NORM Octo[2]

#define	DOWN_NORM Octo[5]

#define	ORIGIN origin

Functions
void	gsd_plus (float *center, int colr, float siz)
	Draws a plus sign symbol at the specified center location.

void	gsd_line_onsurf (geosurf gs, float v1, float *v2)
	Line on surface, fix z-values.

int	gsd_nline_onsurf (geosurf gs, float v1, float v2, float pt, int n)
	Multiline on surface, fix z-values.

void	gsd_x (geosurf gs, float center, int colr, float siz)
	Draws a X symbol at the specified center location.

void	gsd_diamond (float *center, unsigned long colr, float siz)
	Draws a diamond symbol at the specified center location.

void	gsd_cube (float *center, unsigned long colr, float siz)
	Draws a cube symbol at the specified center location.

void	gsd_draw_box (float *center, unsigned long colr, float siz)
	Draws a box symbol at the specified center location.

void	gsd_drawsphere (float *center, unsigned long colr, float siz)
	Draws a sphere at the specified center location.

void	gsd_diamond_lines (void)
	Draw diamond lines.

void	gsd_draw_asterisk (float *center, unsigned long colr, float siz)
	Draws an asterisk symbol at the specified center location.

void	gsd_draw_gyro (float *center, unsigned long colr, float siz)
	Draws a gyro symbol at the specified center location.

void	gsd_3dcursor (float *pt)
	Draw 3d cursor.

void	dir_to_slope_aspect (float dir, float slope, float *aspect, int degrees)
	Converts a direction vector to slope and aspect angles.

int	gsd_north_arrow (float *pos2, float len, GLuint fontbase, unsigned long arw_clr, unsigned long text_clr)
	Draw North Arrow.

int	gsd_arrow (float center, unsigned long colr, float siz, float dir, float sz, geosurf *onsurf)
	Draws an arrow.

int	gsd_arrow_onsurf (float base, float tip, unsigned long colr, int wid, geosurf *gs)
	Draw north arrow on surface.

void	gsd_3darrow (float center, unsigned long colr, float siz1, float siz2, float dir, float sz)
	Draw 3d north arrow.

int	gsd_scalebar (float *pos2, float len, GLuint fontbase, unsigned long bar_clr, unsigned long text_clr)
	Draw Scalebar takes OpenGL coords and size.

int	gsd_scalebar_v2 (float *pos, float len, GLuint fontbase, unsigned long bar_clr, unsigned long text_clr)
	Draw Scalebar (as lines)

void	primitive_cone (unsigned long colr)
	Primitives only called after transforms.

void	primitive_cylinder (unsigned long colr, int caps)
	Primitives only called after transforms.

void	gsd_box (float center, int colr, float siz)
	Draws a box at the specified center location.

Variables
float	Octo [6][3]
	vertices for octahedron

float	OctoN [8][3]
	normals for flat-shaded octahedron

float	CubeNormals [3][3] = {{0, - .57445626 , 0}, {0, 0, .57445626 }, { .57445626 , 0, 0}}

float	CubeVertices [8][3]

float	origin [3] = {0.0, 0.0, 0.0}

float	ogverts [8][3]
	vertices & normals for octagon in xy plane

float	ogvertsplus [8][3]
	vertices for octagon in xy plane, z=1

float	Pi

float	Box [8][3]
	Vertices for box.

float	BoxN [6][3]

Detailed Description

OGSF library - objects management (lower level functions)

GRASS OpenGL gsurf OGSF Library

SPDX-FileCopyrightText: 1999-2008 GRASS Development Team SPDX-License-Identifier: GPL-2.0-or-later

Author: Bill Brown USACERL (October 1993); Doxygenized by Martin Landa <landa.martin gmail.com> (May 2008)

Definition in file gsd_objs.c.

Macro Definition Documentation

◆ DOWN_NORM

#define DOWN_NORM Octo[5]

Definition at line 65 of file gsd_objs.c.

◆ ONORM

#define ONORM .57445626

Definition at line 33 of file gsd_objs.c.

◆ ORIGIN

#define ORIGIN origin

Definition at line 66 of file gsd_objs.c.

◆ UP_NORM

#define UP_NORM Octo[2]

Definition at line 64 of file gsd_objs.c.

Function Documentation

◆ dir_to_slope_aspect()

void dir_to_slope_aspect	(	float *	dir,
		float *	slope,
		float *	aspect,
		int	degrees
	)

Converts a direction vector to slope and aspect angles.

Given a 3D direction vector, this function computes the slope and aspect angles corresponding to the vector. The aspect is the compass direction (azimuth) of the projection of the vector onto the XY plane, and the slope is the angle between the vector and the vertical axis (Z).

Parameters

[in]	dir	Pointer to an array of 3 floats representing the direction vector [dx, dy, dz].
[out]	slope	Pointer to a float where the computed slope angle will be stored (in radians or degrees).
[out]	aspect	Pointer to a float where the computed aspect angle will be stored (in radians or degrees).
[in]	degrees	If non-zero, the output angles are converted to degrees; otherwise, they are in radians.

The function handles edge cases where the direction vector is vertical or horizontal. Aspect is set to 0 if the vector has no horizontal component. Slope is negative for upward-pointing vectors, positive for downward.

Definition at line 772 of file gsd_objs.c.

References Pi, X, Y, and Z.

Referenced by gsd_3darrow(), and gsd_arrow().

◆ gsd_3darrow()

void gsd_3darrow	(	float *	center,
		unsigned long	colr,
		float	siz1,
		float	siz2,
		float *	dir,
		float	sz
	)

Draw 3d north arrow.

Parameters

center	Pointer to a float array representing the (x, y, z) coordinates of the center point.
colr	Integer representing the color to use for drawing the arrow.
siz1	size
siz2	size
dir	Direction of the arrow. Pointer to a float array representing the 3D vector (X,Y,Z).
sz	height

Definition at line 1107 of file gsd_objs.c.

References dir_to_slope_aspect(), G_debug(), GS_v3norm(), gsd_backface(), gsd_bgnlist(), gsd_calllist(), gsd_color_func(), gsd_endlist(), gsd_getshademodel(), gsd_makelist(), gsd_popmatrix(), gsd_pushmatrix(), gsd_rot(), gsd_scale(), gsd_shademodel(), gsd_translate(), primitive_cone(), primitive_cylinder(), X, Y, and Z.

Referenced by gsd_norm_arrows().

◆ gsd_3dcursor()

void gsd_3dcursor ( float * pt )

Draw 3d cursor.

Parameters

[in] pt point

Definition at line 715 of file gsd_objs.c.

References gsd_bgnline(), gsd_endline(), gsd_vert_func(), X, Y, and Z.

◆ gsd_arrow()

int gsd_arrow	(	float *	center,
		unsigned long	colr,
		float	siz,
		float *	dir,
		float	sz,
		geosurf *	onsurf
	)

Draws an arrow.

siz is height, sz is global exag to correct for.

If onsurf in non-null, z component of dir is dropped and line-on-suf is used, resulting in length of arrow being proportional to slope.

Parameters

center	Pointer to a float array representing the (x, y, z) coordinates of the center point.
colr	Integer representing the color to use for drawing the arrow.
siz	Size of the arrow.
dir	Direction of the arrow. Pointer to a float array representing the 3D vector (X,Y,Z).
sz	height, sz is global exag to correct for.
onsurf	surface (geosurf).

Returns: 1 no surface given; 0 on surface

Definition at line 944 of file gsd_objs.c.

References dir_to_slope_aspect(), GS_P2distance(), GS_v3norm(), gsd_arrow_onsurf(), gsd_bgnline(), gsd_color_func(), gsd_endline(), gsd_popmatrix(), gsd_pushmatrix(), gsd_rot(), gsd_scale(), gsd_translate(), gsd_vert_func(), NULL, ORIGIN, UP_NORM, X, Y, and Z.

Referenced by gsd_norm_arrows(), and gsd_wire_arrows().

◆ gsd_arrow_onsurf()

int gsd_arrow_onsurf	(	float *	base,
		float *	tip,
		unsigned long	colr,
		int	wid,
		geosurf *	gs
	)

Draw north arrow on surface.

Parameters

base	Pointer to a float array representing the base as a 2D vector (X,Y).
tip	Pointer to a float array representing the tip as a 2D vector (X,Y).
colr	Integer representing the color to use for drawing the arrow.
wid	Line width (see gsd_linewidth)
gs	surface (geosurf)

Returns: 0

Definition at line 1018 of file gsd_objs.c.

References DOWN_NORM, G_debug(), GS_v3add(), GS_v3cross(), GS_v3dir(), GS_v3eq(), GS_v3mag(), GS_v3mult(), gsd_color_func(), gsd_disc(), gsd_line_onsurf(), gsd_linewidth(), UP_NORM, X, Y, and Z.

Referenced by gsd_arrow().

◆ gsd_box()

void gsd_box	(	float *	center,
		int	colr,
		float *	siz
	)

Draws a box at the specified center location.

This function renders a box at the given center coordinates with the specified color and size.

Warning: siz is an array (we need it for scale only Z in histograms)

Parameters

center	Pointer to a float array representing the (x, y, z) coordinates of the center point.
colr	Integer representing the color to use for drawing the symbol.
siz	Size of the symbol.

Definition at line 1471 of file gsd_objs.c.

References Box, BoxN, gsd_bgnpolygon(), gsd_endpolygon(), gsd_getshademodel(), gsd_litvert_func(), gsd_popmatrix(), gsd_pushmatrix(), gsd_scale(), gsd_shademodel(), gsd_translate(), X, Y, and Z.

Referenced by gpd_obj().

◆ gsd_cube()

void gsd_cube	(	float *	center,
		unsigned long	colr,
		float	siz
	)

Draws a cube symbol at the specified center location.

This function renders a cube symbol at the given center coordinates with the specified color and size.

Added by Hamish Bowman Nov 2005

Parameters

center	Pointer to a float array representing the (x, y, z) coordinates of the center point.
colr	Integer representing the color to use for drawing the symbol.
siz	Size of the symbol.

Definition at line 418 of file gsd_objs.c.

References CubeNormals, CubeVertices, gsd_bgnpolygon(), gsd_endpolygon(), gsd_getshademodel(), gsd_litvert_func(), gsd_popmatrix(), gsd_pushmatrix(), gsd_scale(), gsd_shademodel(), gsd_translate(), X, Y, and Z.

Referenced by gpd_obj().

◆ gsd_diamond()

void gsd_diamond	(	float *	center,
		unsigned long	colr,
		float	siz
	)

Draws a diamond symbol at the specified center location.

This function renders a diamond symbol at the given center coordinates with the specified color and size.

Parameters

center	Pointer to a float array representing the (x, y, z) coordinates of the center point.
colr	Integer representing the color to use for drawing the symbol.
siz	Size of the symbol.

Definition at line 312 of file gsd_objs.c.

References gsd_bgnpolygon(), gsd_bgntmesh(), gsd_endpolygon(), gsd_endtmesh(), gsd_getshademodel(), gsd_litvert_func(), gsd_popmatrix(), gsd_pushmatrix(), gsd_scale(), gsd_shademodel(), gsd_swaptmesh(), gsd_translate(), Octo, OctoN, X, Y, and Z.

Referenced by gpd_obj().

◆ gsd_diamond_lines()

void gsd_diamond_lines ( void )

Draw diamond lines.

Definition at line 573 of file gsd_objs.c.

References gsd_bgnline(), gsd_endline(), gsd_vert_func(), and Octo.

Referenced by gsd_draw_asterisk().

◆ gsd_draw_asterisk()

void gsd_draw_asterisk	(	float *	center,
		unsigned long	colr,
		float	siz
	)

Draws an asterisk symbol at the specified center location.

This function renders an asterisk symbol at the given center coordinates with the specified color and size.

Parameters

center	Pointer to a float array representing the (x, y, z) coordinates of the center point.
colr	Integer representing the color to use for drawing the symbol.
siz	Size of the symbol.

Definition at line 604 of file gsd_objs.c.

References gsd_color_func(), gsd_diamond_lines(), gsd_popmatrix(), gsd_pushmatrix(), gsd_rot(), gsd_scale(), gsd_translate(), X, Y, and Z.

Referenced by gpd_obj().

◆ gsd_draw_box()

void gsd_draw_box	(	float *	center,
		unsigned long	colr,
		float	siz
	)

Draws a box symbol at the specified center location.

This function renders a box symbol at the given center coordinates with the specified color and size.

Added by Hamish Bowman Nov 2005

Parameters

center	Pointer to a float array representing the (x, y, z) coordinates of the center point.
colr	Integer representing the color to use for drawing the symbol.
siz	Size of the symbol.

Definition at line 498 of file gsd_objs.c.

References CubeVertices, gsd_bgnline(), gsd_color_func(), gsd_endline(), gsd_popmatrix(), gsd_pushmatrix(), gsd_scale(), gsd_translate(), gsd_vert_func(), X, Y, and Z.

Referenced by gpd_obj().

◆ gsd_draw_gyro()

void gsd_draw_gyro	(	float *	center,
		unsigned long	colr,
		float	siz
	)

Draws a gyro symbol at the specified center location.

This function renders a gyro symbol at the given center coordinates with the specified color and size.

Parameters

center	Pointer to a float array representing the (x, y, z) coordinates of the center point.
colr	Integer representing the color to use for drawing the symbol.
siz	Size of the symbol.

Definition at line 663 of file gsd_objs.c.

References gsd_bgnline(), gsd_circ(), gsd_color_func(), gsd_endline(), gsd_popmatrix(), gsd_pushmatrix(), gsd_rot(), gsd_scale(), gsd_translate(), gsd_vert_func(), Octo, X, Y, and Z.

Referenced by gpd_obj().

◆ gsd_drawsphere()

void gsd_drawsphere	(	float *	center,
		unsigned long	colr,
		float	siz
	)

Draws a sphere at the specified center location.

This function renders a sphere at the given center coordinates with the specified color and size.

Parameters

center	Pointer to a float array representing the (x, y, z) coordinates of the center point.
colr	Integer representing the color to use for drawing the sphere.
siz	Size of the sphere.

Definition at line 561 of file gsd_objs.c.

References gsd_color_func(), and gsd_sphere().

Referenced by GS_draw_lighting_model(), and GS_draw_lighting_model1().

◆ gsd_line_onsurf()

void gsd_line_onsurf	(	geosurf *	gs,
		float *	v1,
		float *	v2
	)

Line on surface, fix z-values.

Todo:: remove fudge, instead fudge the Z buffer

Parameters

gs	surface (geosurf)
v1	first point (X,Y)
v2	second point (X,Y)

Definition at line 167 of file gsd_objs.c.

References FUDGE, gsd_bgnline(), gsd_endline(), gsd_vert_func(), gsdrape_get_segments(), and Z.

Referenced by GS_draw_line_onsurf(), gsd_arrow_onsurf(), and gsd_x().

◆ gsd_nline_onsurf()

int gsd_nline_onsurf	(	geosurf *	gs,
		float *	v1,
		float *	v2,
		float *	pt,
		int	n
	)

Multiline on surface, fix z-values.

Todo:: remove fudge, instead fudge the Z buffer

Like above, except only draws first n points of line, or np, whichever is less. Returns number of points used. Fills pt with last pt drawn.

Parameters

	gs	surface (geosurf)
	v1	Pointer to a float array representing the first point as a vector.
	v2	Pointer to a float array representing the second point as a vector.
[out]	pt
[in]	n	number of segments

Returns: int

Definition at line 212 of file gsd_objs.c.

References FUDGE, gsd_bgnline(), gsd_endline(), gsd_vert_func(), gsdrape_get_segments(), X, Y, and Z.

Referenced by GS_draw_nline_onsurf().

◆ gsd_north_arrow()

int gsd_north_arrow	(	float *	pos2,
		float	len,
		GLuint	fontbase,
		unsigned long	arw_clr,
		unsigned long	text_clr
	)

Draw North Arrow.

Takes OpenGL coords and size

Parameters

pos2	Pointer to a float array representing the position as a 3D vector (X,Y,Z).
len
fontbase
arw_clr	north arrow color
text_clr	text color

Returns: 1

Todo:

Store arrow somewhere to enable it's removal/change.

Add option to specify north text and font.

Definition at line 847 of file gsd_objs.c.

References GS_done_draw(), GS_set_draw(), gsd_bgnpolygon(), gsd_color_func(), gsd_do_scale(), gsd_endpolygon(), gsd_flush(), GSD_FRONT, gsd_get_txtheight(), gsd_get_txtwidth(), gsd_popmatrix(), gsd_pushmatrix(), Ntop, X, Y, and Z.

Referenced by Nviz_draw_all(), and Nviz_draw_arrow().

◆ gsd_plus()

void gsd_plus	(	float *	center,
		int	colr,
		float	siz
	)

Draws a plus sign symbol at the specified center location.

This function renders a plus sign ('+') symbol at the given center coordinates with the specified color and size.

Parameters

center	Pointer to a float array representing the (x, y, z) coordinates of the center point.
colr	Integer representing the color to use for drawing the symbol.
siz	Size of the symbol.

Definition at line 130 of file gsd_objs.c.

References gsd_bgnline(), gsd_color_func(), gsd_endline(), gsd_vert_func(), X, Y, and Z.

◆ gsd_scalebar()

int gsd_scalebar	(	float *	pos2,
		float	len,
		GLuint	fontbase,
		unsigned long	bar_clr,
		unsigned long	text_clr
	)

Draw Scalebar takes OpenGL coords and size.

Adapted from gsd_north_arrow Hamish Bowman Dec 2006

Parameters

pos2	Pointer to a float array representing the scalebar position as a 3D vector (X,Y,Z).
len
fontbase	font-base
bar_clr	barscale color. Integer representing the color to use for the barscale.
text_clr	test color. Integer representing the color to use for the text.

Returns: 1

Definition at line 1189 of file gsd_objs.c.

References G_database_unit_name(), GS_done_draw(), GS_set_draw(), gsd_bgnpolygon(), gsd_color_func(), gsd_do_scale(), gsd_endpolygon(), gsd_flush(), GSD_FRONT, gsd_get_txtheight(), gsd_get_txtwidth(), gsd_popmatrix(), gsd_pushmatrix(), Ntop, TRUE, X, Y, and Z.

◆ gsd_scalebar_v2()

int gsd_scalebar_v2	(	float *	pos,
		float	len,
		GLuint	fontbase,
		unsigned long	bar_clr,
		unsigned long	text_clr
	)

Draw Scalebar (as lines)

Adapted from gsd_scalebar A.Kratochvilova 2011

Parameters

pos	Pointer to a float array representing the scalebar position as a 3D vector (X,Y,Z).
len
fontbase	font-base (unused)
bar_clr	barscale color. Integer representing the color to use for the barscale.
text_clr	Text color (unused). Integer representing the color to use for the text.

Returns: 1

Definition at line 1278 of file gsd_objs.c.

References GS_done_draw(), GS_set_draw(), gsd_bgnline(), gsd_color_func(), gsd_do_scale(), gsd_endline(), gsd_flush(), GSD_FRONT, gsd_linewidth(), gsd_popmatrix(), gsd_pushmatrix(), gsd_vert_func(), Ntop, X, Y, and Z.

Referenced by Nviz_draw_all(), and Nviz_draw_scalebar().

◆ gsd_x()

void gsd_x	(	geosurf *	gs,
		float *	center,
		int	colr,
		float	siz
	)

Draws a X symbol at the specified center location.

This function renders a x ('X') symbol at the given center coordinates with the specified color and size.

Note gs: NULL if flat

Parameters

gs	surface (geosurf)
center	Pointer to a float array representing the (x, y, z) coordinates of the center point.
colr	Integer representing the color to use for drawing the symbol.
siz	Size of the symbol.

Definition at line 259 of file gsd_objs.c.

References gsd_bgnline(), gsd_color_func(), gsd_endline(), gsd_line_onsurf(), gsd_vert_func(), X, Y, and Z.

Referenced by gk_draw_path(), and gpd_obj().

◆ primitive_cone()

void primitive_cone ( unsigned long colr )

Primitives only called after transforms.

Center is actually center at base of 8 sided cone

Parameters

colr	Integer representing the color to use for drawing the cone.

Definition at line 1341 of file gsd_objs.c.

References gsd_bgntfan(), gsd_endtfan(), gsd_litvert_func2(), ogverts, UP_NORM, X, Y, and Z.

Referenced by gsd_3darrow().

◆ primitive_cylinder()

void primitive_cylinder	(	unsigned long	colr,
		int	caps
	)

Primitives only called after transforms.

Center is actually center at base of 8 sided cylinder

Parameters

colr	Integer representing the color to use for drawing the cylinder.
caps	If non zero, draw caps at the bottom and top of the cylinder.

Definition at line 1378 of file gsd_objs.c.

References DOWN_NORM, gsd_bgnqstrip(), gsd_bgntfan(), gsd_endqstrip(), gsd_endtfan(), gsd_litvert_func2(), ogverts, ogvertsplus, ORIGIN, and UP_NORM.

Referenced by gsd_3darrow().

Variable Documentation

◆ Box

float Box[8][3]

Initial value:

= {{1.0, 1.0, -1.0},  {-1.0, 1.0, -1.0}, {-1.0, 1.0, 1.0},
                   {1.0, 1.0, 1.0},   {1.0, -1.0, -1.0}, {-1.0, -1.0, -1.0},
                   {-1.0, -1.0, 1.0}, {1.0, -1.0, 1.0}}

Vertices for box.

Definition at line 1451 of file gsd_objs.c.

Referenced by dig_line_box(), gsd_box(), Vect_box_clip(), Vect_get_area_box(), Vect_get_constraint_box(), Vect_get_isle_box(), Vect_get_line_box(), Vect_get_map_box(), Vect_get_map_box1(), Vect_line_box(), Vect_point_in_box(), Vect_point_in_box_2d(), Vect_region_box(), Vect_select_areas_by_box(), Vect_select_isles_by_box(), Vect_select_lines_by_box(), and Vect_select_nodes_by_box().

◆ BoxN

float BoxN[6][3]

Initial value:

= {{0, 0, - .57445626 }, {0, 0, .57445626 }, {0, .57445626 , 0},

{0, - .57445626 , 0}, { .57445626 , 0, 0}, {- .57445626 , 0, 0}}

Definition at line 1455 of file gsd_objs.c.

Referenced by gsd_box().

◆ CubeNormals

float CubeNormals[3][3] = {{0, - .57445626 , 0}, {0, 0, .57445626 }, { .57445626 , 0, 0}}

???? not sure if any of these are needed for correct lighting. float CubeNormals[6][3] = { {ONORM, 0, 0}, {-ONORM, 0, 0}, {0, ONORM, 0}, {0, -ONORM, 0}, {0, 0, ONORM}, {0, 0, -ONORM} };

Definition at line 56 of file gsd_objs.c.

Referenced by gsd_cube().

◆ CubeVertices

float CubeVertices[8][3]

Initial value:

= {
    {-1.0, -1.0, -1.0}, {1.0, -1.0, -1.0}, {1.0, 1.0, -1.0}, {-1.0, 1.0, -1.0},
    {-1.0, -1.0, 1.0},  {1.0, -1.0, 1.0},  {1.0, 1.0, 1.0},  {-1.0, 1.0, 1.0}}

Definition at line 58 of file gsd_objs.c.

Referenced by gsd_cube(), and gsd_draw_box().

◆ Octo

float Octo[6][3]

Initial value:

= {{1.0, 0.0, 0.0}, {0.0, 1.0, 0.0}, {0.0, 0.0, 1.0},

{-1.0, 0.0, 0.0}, {0.0, -1.0, 0.0}, {0.0, 0.0, -1.0}}

vertices for octahedron

Definition at line 30 of file gsd_objs.c.

Referenced by gsd_diamond(), gsd_diamond_lines(), and gsd_draw_gyro().

◆ OctoN

float OctoN[8][3]

Initial value:

= {
    { .57445626 ,  .57445626 ,  .57445626 },   {- .57445626 ,  .57445626 ,  .57445626 },   { .57445626 , - .57445626 ,  .57445626 },
    {- .57445626 , - .57445626 ,  .57445626 }, { .57445626 ,  .57445626 , - .57445626 },   {- .57445626 ,  .57445626 , - .57445626 },
    { .57445626 , - .57445626 , - .57445626 }, {- .57445626 , - .57445626 , - .57445626 },
}

normals for flat-shaded octahedron

Definition at line 38 of file gsd_objs.c.

Referenced by gsd_diamond().

◆ ogverts

float ogverts[8][3]

vertices & normals for octagon in xy plane

Definition at line 71 of file gsd_objs.c.

Referenced by primitive_cone(), and primitive_cylinder().

◆ ogvertsplus

float ogvertsplus[8][3]

vertices for octagon in xy plane, z=1

Definition at line 76 of file gsd_objs.c.

Referenced by primitive_cylinder().

◆ origin

float origin[3] = {0.0, 0.0, 0.0}

Definition at line 62 of file gsd_objs.c.

◆ Pi

float Pi

Definition at line 78 of file gsd_objs.c.

Referenced by dir_to_slope_aspect().

Macros

Functions

Variables

Detailed Description

Macro Definition Documentation

◆ DOWN_NORM

◆ ONORM

◆ ORIGIN

◆ UP_NORM

Function Documentation

◆ dir_to_slope_aspect()

◆ gsd_3darrow()

◆ gsd_3dcursor()

◆ gsd_arrow()

◆ gsd_arrow_onsurf()

◆ gsd_box()

◆ gsd_cube()

◆ gsd_diamond()

◆ gsd_diamond_lines()

◆ gsd_draw_asterisk()

◆ gsd_draw_box()

◆ gsd_draw_gyro()

◆ gsd_drawsphere()

◆ gsd_line_onsurf()

◆ gsd_nline_onsurf()

◆ gsd_north_arrow()

◆ gsd_plus()

◆ gsd_scalebar()

◆ gsd_scalebar_v2()

◆ gsd_x()

◆ primitive_cone()

◆ primitive_cylinder()

Variable Documentation

◆ Box

◆ BoxN

◆ CubeNormals

◆ CubeVertices

◆ Octo

◆ OctoN

◆ ogverts

◆ ogvertsplus

◆ origin

◆ Pi