layer.c File Reference

Functions for a DXF layer table (LAYER). More...

#include "layer.h"

Include dependency graph for layer.c:

Go to the source code of this file.

Functions
DxfLayer *	dxf_layer_new ()
	Allocate memory for a DXF LAYER.
DxfLayer *	dxf_layer_init (DxfLayer *layer)
	Allocate memory and initialize data fields in a DXF LAYER table.
DxfLayer *	dxf_layer_read (DxfFile *fp, DxfLayer *layer)
	Read data from a DXF file into a DXF LAYER table.
int	dxf_layer_write (DxfFile *fp, DxfLayer *layer)
	Write DXF output for a DXF LAYER table.
int	dxf_layer_free (DxfLayer *layer)
	Free the allocated memory for a DXF LAYER and all it's data fields.
void	dxf_layer_free_chain (DxfLayer *layers)
	Free the allocated memory for a chain of DXF LAYER tables and all their data fields.
int	dxf_layer_get_id_code (DxfLayer *layer)
	Get the ID code from a DXF LAYER entity.
DxfLayer *	dxf_layer_set_id_code (DxfLayer *layer, int id_code)
	Set the ID code for a DXF LAYER entity.
char *	dxf_layer_get_layer_name (DxfLayer *layer)
	Get the layer_name from a DXF LAYER entity.
DxfLayer *	dxf_layer_set_layer_name (DxfLayer *layer, char *layer_name)
	Set the layer_name for a DXF LAYER entity.
char *	dxf_layer_get_linetype (DxfLayer *layer)
	Get the linetype from a DXF LAYER entity.
DxfLayer *	dxf_layer_set_linetype (DxfLayer *layer, char *linetype)
	Set the linetype for a DXF LAYER entity.
int	dxf_layer_get_color (DxfLayer *layer)
	Get the color from a DXF LAYER entity.
DxfLayer *	dxf_layer_set_color (DxfLayer *layer, int color)
	Set the color for a DXF LAYER entity.
int	dxf_layer_is_off (DxfLayer *layer)
	Test if layer is off.
int	dxf_layer_get_flag (DxfLayer *layer)
	Get the flag from a DXF LAYER entity.
DxfLayer *	dxf_layer_set_flag (DxfLayer *layer, int flag)
	Set the flag for a DXF LAYER entity.
int	dxf_layer_is_frozen (DxfLayer *layer)
	Test if layer is frozen.
int	dxf_layer_is_locked (DxfLayer *layer)
	Test if layer is locked.
int	dxf_layer_is_xreferenced (DxfLayer *layer)
	Test if layer is externally dependent on an xref.
int	dxf_layer_is_xresolved (DxfLayer *layer)
	Test if layer is externally dependent on a xref and has been successfully resolved.
int	dxf_layer_is_referenced (DxfLayer *layer)
	Test if layer is internally referenced by an entity.
int	dxf_layer_get_plotting_flag (DxfLayer *layer)
	Get the plotting_flag from a DXF LAYER entity.
DxfLayer *	dxf_layer_set_plotting_flag (DxfLayer *layer, int plotting_flag)
	Set the plotting_flag for a DXF LAYER entity.
char *	dxf_layer_get_dictionary_owner_soft (DxfLayer *layer)
	Get the soft pointer to the dictionary owner from a DXF LAYER entity.
DxfLayer *	dxf_layer_set_dictionary_owner_soft (DxfLayer *layer, char *dictionary_owner_soft)
	Set the pointer to the dictionary_owner_soft for a DXF LAYER entity.
char *	dxf_layer_get_material (DxfLayer *layer)
	Get the pointer to the material from a DXF LAYER entity.
DxfLayer *	dxf_layer_set_material (DxfLayer *layer, char *material)
	Set the pointer to the material for a DXF LAYER entity.
char *	dxf_layer_get_dictionary_owner_hard (DxfLayer *layer)
	Get the hard pointer to the dictionary owner from a DXF LAYER entity.
DxfLayer *	dxf_layer_set_dictionary_owner_hard (DxfLayer *layer, char *dictionary_owner_hard)
	Set the pointer to the dictionary_owner_hard for a DXF LAYER entity.
int16_t	dxf_layer_get_lineweight (DxfLayer *layer)
	Get the lineweight from a DXF LAYER entity.
DxfLayer *	dxf_layer_set_lineweight (DxfLayer *layer, int16_t lineweight)
	Set the lineweight for a DXF LAYER entity.
char *	dxf_layer_get_plot_style_name (DxfLayer *layer)
	Get the plot_style_name from a DXF LAYER entity.
DxfLayer *	dxf_layer_set_plot_style_name (DxfLayer *layer, char *plot_style_name)
	Set the plot_style_name for a DXF LAYER entity.
DxfLayer *	dxf_layer_get_next (DxfLayer *layer)
	Get the pointer to the next LAYER entity from a DXF LAYER entity.
DxfLayer *	dxf_layer_set_next (DxfLayer *layer, DxfLayer *next)
	Set the pointer to the next LAYER for a DXF LAYER entity.
DxfLayer *	dxf_layer_get_last (DxfLayer *layer)
	Get the pointer to the last LAYER entity from a linked list of DXF LAYER entities.

---

Detailed Description

Functions for a DXF layer table (LAYER).

Author:

Copyright (C) 2008, 2012, 2013, 2014, 2015, 2017 by Bert Timmerman <bert.timmerman@xs4all.nl>.

Note:

Xref-dependent layers are output during DXFOUT.
For these layers, the associated linetype name in the DXF file is always CONTINUOUS.

---

Copyright Notices.

This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful, but WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the GNU General Public License for more details.

You should have received a copy of the GNU General Public License along with this program; if not, write to:
Free Software Foundation, Inc.,
59 Temple Place,
Suite 330,
Boston,
MA 02111 USA.

Drawing eXchange Format (DXF) is a defacto industry standard for the exchange of drawing files between various Computer Aided Drafting programs.
DXF is an industry standard designed by Autodesk(TM).
For more details see http://www.autodesk.com.

---

Definition in file layer.c.

---

Function Documentation

DxfLayer* dxf_layer_new

(

)

Allocate memory for a DXF LAYER.

Fill the memory contents with zeros.

Returns:

NULL when no memory was allocated, a pointer to the allocated memory when succesful.

Definition at line 52 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, and dxf_insert_struct::layer.

Referenced by dxf_layer_init(), and dxf_layer_read().

DxfLayer* dxf_layer_init

(

DxfLayer *

layer

)

Allocate memory and initialize data fields in a DXF LAYER table.

Returns:

NULL when no memory was allocated, a pointer to the allocated memory when succesful.

Parameters:

layer

DXF LAYER table.

Definition at line 90 of file layer.c.

References _, DXF_COLOR_BYLAYER, DXF_DEBUG_BEGIN, DXF_DEBUG_END, DXF_DEFAULT_LINETYPE, dxf_layer_new(), dxf_layer_set_color(), dxf_layer_set_dictionary_owner_hard(), dxf_layer_set_dictionary_owner_soft(), dxf_layer_set_flag(), dxf_layer_set_id_code(), dxf_layer_set_layer_name(), dxf_layer_set_linetype(), dxf_layer_set_lineweight(), dxf_layer_set_material(), dxf_layer_set_next(), dxf_layer_set_plot_style_name(), and dxf_layer_set_plotting_flag().

Referenced by dxf_layer_read().

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DxfLayer* dxf_layer_read	(	DxfFile *	fp,
		DxfLayer *	layer
	)

Read data from a DXF file into a DXF LAYER table.

The last line read from file contained the string "LAYER".
Now follows some data for the LAYER, to be terminated with a " 0" string announcing the following table, or the end of the TABLE section marker ENDTAB.
While parsing the DXF file store data in layer.

Returns:

a pointer to layer.

Parameters:

fp	DXF file pointer to an input file (or device).
layer	DXF LAYER table.

Definition at line 145 of file layer.c.

References _, dxf_file_struct::acad_version_number, AutoCAD_13, dxf_layer_struct::color, dxf_layer_struct::dictionary_owner_hard, dxf_layer_struct::dictionary_owner_soft, DXF_DEBUG_BEGIN, DXF_DEBUG_END, DXF_DEFAULT_LINETYPE, dxf_layer_init(), dxf_layer_new(), dxf_file_struct::filename, dxf_layer_struct::flag, dxf_file_struct::fp, dxf_layer_struct::layer_name, dxf_file_struct::line_number, dxf_layer_struct::linetype, dxf_layer_struct::lineweight, dxf_layer_struct::material, dxf_layer_struct::plot_style_name, and dxf_layer_struct::plotting_flag.

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int dxf_layer_write	(	DxfFile *	fp,
		DxfLayer *	layer
	)

Write DXF output for a DXF LAYER table.

Returns:

EXIT_SUCCESS when done, or EXIT_FAILURE when an error occurred.

Todo:

for version R14.
Implementing the start of application-defined group "{application_name", with Group code 102.
For example: "{ACAD_REACTORS" indicates the start of the AutoCAD persistent reactors group.

application-defined codes: Group codes and values within the 102 groups are application defined (optional).

End of group, "}" (optional), with Group code 102.

Parameters:

fp	DXF file pointer to an output file (or device).
layer	DXF LAYER table.

Definition at line 318 of file layer.c.

References _, dxf_file_struct::acad_version_number, AutoCAD_14, AutoCAD_2000, AutoCAD_2007, DXF_DEBUG_BEGIN, DXF_DEBUG_END, DXF_DEFAULT_LINETYPE, dxf_layer_get_color(), dxf_layer_get_dictionary_owner_soft(), dxf_layer_get_flag(), dxf_layer_get_id_code(), dxf_layer_get_layer_name(), dxf_layer_get_linetype(), dxf_layer_get_lineweight(), dxf_layer_get_material(), dxf_layer_get_plot_style_name(), dxf_layer_get_plotting_flag(), dxf_layer_set_linetype(), dxf_file_struct::fp, and dxf_layer_struct::id_code.

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int dxf_layer_free

(

DxfLayer *

layer

)

Free the allocated memory for a DXF LAYER and all it's data fields.

Returns:

EXIT_SUCCESS when done, or EXIT_FAILURE when an error occurred.

Parameters:

layer

Pointer to the memory occupied by the DXF LAYER table.

Definition at line 431 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, dxf_layer_get_dictionary_owner_hard(), dxf_layer_get_dictionary_owner_soft(), dxf_layer_get_layer_name(), dxf_layer_get_linetype(), dxf_layer_get_material(), dxf_layer_get_plot_style_name(), and dxf_layer_struct::next.

Referenced by dxf_layer_free_chain().

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void dxf_layer_free_chain

(

DxfLayer *

layers

)

Free the allocated memory for a chain of DXF LAYER tables and all their data fields.

Version:

According to DXF R10.

According to DXF R11.

According to DXF R12.

According to DXF R13.

According to DXF R14.

Parameters:

layers

pointer to the chain of DXF LAYER tables.

Definition at line 482 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, dxf_layer_free(), and dxf_layer_struct::next.

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int dxf_layer_get_id_code

(

DxfLayer *

layer

)

Get the ID code from a DXF LAYER entity.

Returns:

ID code.

Parameters:

layer

a pointer to a DXF LAYER entity.

Definition at line 515 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, and dxf_layer_struct::id_code.

Referenced by dxf_layer_write().

DxfLayer* dxf_layer_set_id_code	(	DxfLayer *	layer,
		int	id_code
	)

Set the ID code for a DXF LAYER entity.

Parameters:

layer	a pointer to a DXF LAYER entity.
id_code	Identification number for the entity. This is to be an unique (sequential) number in the DXF file.

Definition at line 550 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, and dxf_layer_struct::id_code.

Referenced by dxf_layer_init().

char* dxf_layer_get_layer_name

(

DxfLayer *

layer

)

Get the layer_name from a DXF LAYER entity.

Returns:

layer_name when sucessful, NULL when an error occurred.

Parameters:

layer

a pointer to a DXF LAYER entity.

Definition at line 592 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, and dxf_layer_struct::layer_name.

Referenced by dxf_layer_free(), and dxf_layer_write().

DxfLayer* dxf_layer_set_layer_name	(	DxfLayer *	layer,
		char *	layer_name
	)

Set the layer_name for a DXF LAYER entity.

Parameters:

layer	a pointer to a DXF LAYER entity.
layer_name	a string containing the layer_name for the entity.

Definition at line 627 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, and dxf_layer_struct::layer_name.

Referenced by dxf_layer_init().

char* dxf_layer_get_linetype

(

DxfLayer *

layer

)

Get the linetype from a DXF LAYER entity.

Returns:

linetype when sucessful, NULL when an error occurred.

Parameters:

layer

a pointer to a DXF LAYER entity.

Definition at line 668 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, and dxf_layer_struct::linetype.

Referenced by dxf_layer_free(), and dxf_layer_write().

DxfLayer* dxf_layer_set_linetype	(	DxfLayer *	layer,
		char *	linetype
	)

Set the linetype for a DXF LAYER entity.

Parameters:

layer	a pointer to a DXF LAYER entity.
linetype	a string containing the linetype for the entity.

Definition at line 703 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, and dxf_layer_struct::linetype.

Referenced by dxf_layer_init(), and dxf_layer_write().

int dxf_layer_get_color

(

DxfLayer *

layer

)

Get the color from a DXF LAYER entity.

Returns:

color.

Parameters:

layer

a pointer to a DXF LAYER entity.

Definition at line 743 of file layer.c.

References _, dxf_layer_struct::color, DXF_DEBUG_BEGIN, and DXF_DEBUG_END.

Referenced by dxf_layer_write().

DxfLayer* dxf_layer_set_color	(	DxfLayer *	layer,
		int	color
	)

Set the color for a DXF LAYER entity.

Parameters:

layer	a pointer to a DXF LAYER entity.
color	the color to be set for the entity.

Definition at line 777 of file layer.c.

References _, dxf_layer_struct::color, DXF_DEBUG_BEGIN, and DXF_DEBUG_END.

Referenced by dxf_layer_init().

int dxf_layer_is_off

(

DxfLayer *

layer

)

Test if layer is off.

Returns:

TRUE when layer is off, or FALSE when layer is on, or (-1) when an error occurred.

Parameters:

layer

DXF LAYER table.

Definition at line 817 of file layer.c.

References _, dxf_layer_struct::color, DXF_DEBUG_BEGIN, DXF_DEBUG_END, and FALSE.

int dxf_layer_get_flag

(

DxfLayer *

layer

)

Get the flag from a DXF LAYER entity.

Returns:

flag.

Parameters:

layer

a pointer to a DXF LAYER entity.

Definition at line 850 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, and dxf_layer_struct::flag.

Referenced by dxf_layer_write().

DxfLayer* dxf_layer_set_flag	(	DxfLayer *	layer,
		int	flag
	)

Set the flag for a DXF LAYER entity.

Parameters:

layer	a pointer to a DXF LAYER entity.
flag	a flag value for the entity.

Definition at line 885 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, and dxf_layer_struct::flag.

Referenced by dxf_layer_init().

int dxf_layer_is_frozen

(

DxfLayer *

layer

)

Test if layer is frozen.

Returns:

TRUE when layer is frozen, or FALSE when layer is thawed, or (-1) when an error occurred.

Parameters:

layer

DXF LAYER table.

Definition at line 926 of file layer.c.

References _, DXF_CHECK_BIT, DXF_DEBUG_BEGIN, DXF_DEBUG_END, FALSE, and dxf_layer_struct::flag.

int dxf_layer_is_locked

(

DxfLayer *

layer

)

Test if layer is locked.

Returns:

TRUE when layer is locked, or FALSE when layer is not locked, or (-1) when an error occurred.

Parameters:

layer

DXF LAYER table.

Definition at line 961 of file layer.c.

References _, DXF_CHECK_BIT, DXF_DEBUG_BEGIN, DXF_DEBUG_END, FALSE, and dxf_layer_struct::flag.

int dxf_layer_is_xreferenced

(

DxfLayer *

layer

)

Test if layer is externally dependent on an xref.

Returns:

TRUE when layer is externally dependent on an xref, or FALSE when layer is not externally dependent on an xref, or (-1) when an error occurred.

Parameters:

layer

DXF LAYER table.

Definition at line 996 of file layer.c.

References _, DXF_CHECK_BIT, DXF_DEBUG_BEGIN, DXF_DEBUG_END, FALSE, and dxf_layer_struct::flag.

int dxf_layer_is_xresolved

(

DxfLayer *

layer

)

Test if layer is externally dependent on a xref and has been successfully resolved.

Returns:

TRUE when layer is externally dependent on a xref and has been successfully resolved, or FALSE when layer is not externally dependent on a xref and has not been successfully resolved, or (-1) when an error occurred.

Parameters:

layer

DXF LAYER table.

Definition at line 1033 of file layer.c.

References _, DXF_CHECK_BIT, DXF_DEBUG_BEGIN, DXF_DEBUG_END, FALSE, and dxf_layer_struct::flag.

int dxf_layer_is_referenced

(

DxfLayer *

layer

)

Test if layer is internally referenced by an entity.

Returns:

TRUE when layer is internally referenced by an entity, or FALSE when layer is not internally referenced by an entity, or (-1) when an error occurred.

Parameters:

layer

DXF LAYER table.

Definition at line 1069 of file layer.c.

References _, DXF_CHECK_BIT, DXF_DEBUG_BEGIN, DXF_DEBUG_END, FALSE, and dxf_layer_struct::flag.

int dxf_layer_get_plotting_flag

(

DxfLayer *

layer

)

Get the plotting_flag from a DXF LAYER entity.

Returns:

flag.

Parameters:

layer

a pointer to a DXF LAYER entity.

Definition at line 1102 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, and dxf_layer_struct::plotting_flag.

Referenced by dxf_layer_write().

DxfLayer* dxf_layer_set_plotting_flag	(	DxfLayer *	layer,
		int	plotting_flag
	)

Set the plotting_flag for a DXF LAYER entity.

Parameters:

layer	a pointer to a DXF LAYER entity.
plotting_flag	a plotting_flag value for the entity.

Definition at line 1137 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, and dxf_layer_struct::plotting_flag.

Referenced by dxf_layer_init().

char* dxf_layer_get_dictionary_owner_soft

(

DxfLayer *

layer

)

Get the soft pointer to the dictionary owner from a DXF LAYER entity.

Returns:

soft pointer to the dictionary owner.

Warning:

No checks are performed on the returned pointer (string).

Parameters:

layer

a pointer to a DXF LAYER entity.

Definition at line 1180 of file layer.c.

References _, dxf_layer_struct::dictionary_owner_soft, DXF_DEBUG_BEGIN, and DXF_DEBUG_END.

Referenced by dxf_layer_free(), and dxf_layer_write().

DxfLayer* dxf_layer_set_dictionary_owner_soft	(	DxfLayer *	layer,
		char *	dictionary_owner_soft
	)

Set the pointer to the dictionary_owner_soft for a DXF LAYER entity.

Parameters:

layer	a pointer to a DXF LAYER entity.
dictionary_owner_soft	a string containing the pointer to the dictionary_owner_soft for the entity.

Definition at line 1216 of file layer.c.

References _, dxf_layer_struct::dictionary_owner_soft, DXF_DEBUG_BEGIN, and DXF_DEBUG_END.

Referenced by dxf_layer_init().

char* dxf_layer_get_material

(

DxfLayer *

layer

)

Get the pointer to the material from a DXF LAYER entity.

Returns:

a pointer to material when successful, or NULL when an error occurred.

Warning:

No checks are performed on the returned pointer.

Parameters:

layer

a pointer to a DXF LAYER entity.

Definition at line 1260 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, and dxf_layer_struct::material.

Referenced by dxf_layer_free(), and dxf_layer_write().

DxfLayer* dxf_layer_set_material	(	DxfLayer *	layer,
		char *	material
	)

Set the pointer to the material for a DXF LAYER entity.

Returns:

a pointer to layer when successful, or NULL when an error occurred.

Parameters:

layer	a pointer to a DXF LAYER entity.
material	a string containing the pointer to the material for the entity.

Definition at line 1298 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, and dxf_layer_struct::material.

Referenced by dxf_layer_init().

char* dxf_layer_get_dictionary_owner_hard

(

DxfLayer *

layer

)

Get the hard pointer to the dictionary owner from a DXF LAYER entity.

Returns:

hard pointer to the dictionary owner.

Warning:

No checks are performed on the returned pointer (string).

Parameters:

layer

a pointer to a DXF LAYER entity.

Definition at line 1342 of file layer.c.

References _, dxf_layer_struct::dictionary_owner_hard, DXF_DEBUG_BEGIN, and DXF_DEBUG_END.

Referenced by dxf_layer_free().

DxfLayer* dxf_layer_set_dictionary_owner_hard	(	DxfLayer *	layer,
		char *	dictionary_owner_hard
	)

Set the pointer to the dictionary_owner_hard for a DXF LAYER entity.

Parameters:

layer	a pointer to a DXF LAYER entity.
dictionary_owner_hard	a string containing the pointer to the dictionary_owner_hard for the entity.

Definition at line 1378 of file layer.c.

References _, dxf_layer_struct::dictionary_owner_hard, DXF_DEBUG_BEGIN, and DXF_DEBUG_END.

Referenced by dxf_layer_init().

int16_t dxf_layer_get_lineweight

(

DxfLayer *

layer

)

Get the lineweight from a DXF LAYER entity.

Returns:

lineweight when successful, or EXIT_FAILURE when an error occurred.

Parameters:

layer

a pointer to a DXF LAYER entity.

Definition at line 1420 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, and dxf_layer_struct::lineweight.

Referenced by dxf_layer_write().

DxfLayer* dxf_layer_set_lineweight	(	DxfLayer *	layer,
		int16_t	lineweight
	)

Set the lineweight for a DXF LAYER entity.

Returns:

a pointer to layer when successful, or NULL when an error occurred.

Parameters:

layer	a pointer to a DXF LAYER entity.
lineweight	the lineweight to be set for the entity.

Definition at line 1451 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, and dxf_layer_struct::lineweight.

Referenced by dxf_layer_init().

char* dxf_layer_get_plot_style_name

(

DxfLayer *

layer

)

Get the plot_style_name from a DXF LAYER entity.

Returns:

a pointer to plot_style_name when sucessful, or NULL when an error occurred.

Parameters:

layer

a pointer to a DXF LAYER entity.

Definition at line 1485 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, and dxf_layer_struct::plot_style_name.

Referenced by dxf_layer_free(), and dxf_layer_write().

DxfLayer* dxf_layer_set_plot_style_name	(	DxfLayer *	layer,
		char *	plot_style_name
	)

Set the plot_style_name for a DXF LAYER entity.

Returns:

a pointer to layer when successful, or NULL when an error occurred.

Parameters:

layer	a pointer to a DXF LAYER entity.
plot_style_name	a string containing the plot_style_name for the entity.

Definition at line 1523 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, and dxf_layer_struct::plot_style_name.

Referenced by dxf_layer_init().

DxfLayer* dxf_layer_get_next

(

DxfLayer *

layer

)

Get the pointer to the next LAYER entity from a DXF LAYER entity.

Returns:

pointer to the next LAYER entity.

Warning:

No checks are performed on the returned pointer.

Parameters:

layer

a pointer to a DXF LAYER entity.

Definition at line 1567 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, and dxf_layer_struct::next.

DxfLayer* dxf_layer_set_next	(	DxfLayer *	layer,
		DxfLayer *	next
	)

Set the pointer to the next LAYER for a DXF LAYER entity.

Parameters:

layer	a pointer to a DXF LAYER entity.
next	a pointer to the next LAYER for the entity.

Definition at line 1603 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, and dxf_layer_struct::next.

Referenced by dxf_layer_init().

DxfLayer* dxf_layer_get_last

(

DxfLayer *

layer

)

Get the pointer to the last LAYER entity from a linked list of DXF LAYER entities.

Returns:

pointer to the last LAYER entity.

Warning:

No checks are performed on the returned pointer.

Parameters:

layer

a pointer to a DXF LAYER entity.

Definition at line 1646 of file layer.c.

References _, DXF_DEBUG_BEGIN, DXF_DEBUG_END, and dxf_layer_struct::next.