DXF definition of an AutoCAD block entity. More...

#include <block.h>

Collaboration diagram for dxf_block_struct:

Data Fields
char *	xref_name
char *	block_name
char *	block_name_additional
char *	description
int	id_code
char *	layer
DxfPoint *	p0
int	block_type
double	extr_x0
double	extr_y0
double	extr_z0
char *	dictionary_owner_soft
struct DxfEndblk *	endblk
struct DxfBlock *	next

Detailed Description

DXF definition of an AutoCAD block entity.

The Blocks section of the DXF file contains all the Block Definitions.
This section contains the entities that make up the Blocks used in the drawing, including anonymous Blocks generated by the HATCH command and by associative dimensioning.
The format of the entities in this section is identical to those in the Entities section described later, so see that section for details.
All entities in the Blocks section appear between Block and Endblk entities.
Block and Endblk entities appear only in the Blocks section.
Block definitions are never nested (that is, no Block or Endblk entity ever appears within another Block-Endblk pair), although a Block definition can contain an INSERT entity.

External References are written in the DXF file as any Block Definition, except they also include a text string (group code 1) of the path and filename of the External Reference.

Definition at line 79 of file block.h.

Field Documentation

char* dxf_block_struct::xref_name

Xref path name.
Group code = 1.

Definition at line 83 of file block.h.

Referenced by dxf_block_free(), dxf_block_get_xref_name(), dxf_block_read(), and dxf_block_set_xref_name().

char* dxf_block_struct::block_name

Block name.
Group code = 2.

Definition at line 86 of file block.h.

Referenced by dxf_block_free(), dxf_block_get_block_name(), dxf_block_read(), and dxf_block_set_block_name().

char* dxf_block_struct::block_name_additional

Additional block name.
Group code = 3.

Definition at line 89 of file block.h.

Referenced by dxf_block_free(), dxf_block_get_block_name_additional(), dxf_block_read(), and dxf_block_set_block_name_additional().

char* dxf_block_struct::description

Block description (optional).
Group code = 4.

Definition at line 92 of file block.h.

Referenced by dxf_block_free(), dxf_block_get_description(), dxf_block_read(), and dxf_block_set_description().

int dxf_block_struct::id_code

Identification number for the entity.
This is to be an unique (sequential) number in the DXF file.
Group code = 5.

Definition at line 95 of file block.h.

Referenced by dxf_block_get_id_code(), dxf_block_read(), and dxf_block_set_id_code().

char* dxf_block_struct::layer

Layer on which the entity is drawn.
Defaults to layer "0" if no valid layername is given.
Group code = 8.

Definition at line 100 of file block.h.

Referenced by dxf_block_free(), dxf_block_get_layer(), dxf_block_read(), and dxf_block_set_layer().

DxfPoint* dxf_block_struct::p0

Base point.
Group codes = 10, 20 and 30.

Definition at line 104 of file block.h.

Referenced by dxf_block_get_p0(), dxf_block_get_x0(), dxf_block_get_y0(), dxf_block_get_z0(), dxf_block_read(), dxf_block_set_p0(), dxf_block_set_x0(), dxf_block_set_y0(), and dxf_block_set_z0().

int dxf_block_struct::block_type

Bit coded:

this is an anonymous Block generated by hatching, associative dimensioning, other internal operations, or an application.
this Block has Attributes.
this Block is an external reference (Xref).
not used.
this Block is externally dependent.
this is a resolved external reference, or dependent of an external reference.
this definition is referenced.

Group code = 70.

Definition at line 107 of file block.h.

Referenced by dxf_block_get_block_type(), dxf_block_has_attributes(), dxf_block_is_anonymous(), dxf_block_is_referenced(), dxf_block_is_xdependent(), dxf_block_is_xreferenced(), dxf_block_is_xresolved(), dxf_block_read(), and dxf_block_set_block_type().