io_import_dxf/dxfgrabber/const.py

   1 # SPDX-License-Identifier: MIT
   2 # Copyright 2012 Manfred Moitzi
   3
   4 # Purpose: constant values
   5 # Created: 21.07.2012, taken from my ezdxf project
   6
   7 from __future__ import unicode_literals
   8 __author__ = "mozman <mozman@gmx.at>"
   9
  10 ENV_CYTHON = 'DXFGRABBER_CYTHON'
  11
  12 BYBLOCK = 0
  13 BYLAYER = 256
  14
  15 XTYPE_NONE = 0
  16 XTYPE_2D = 1
  17 XTYPE_3D = 2
  18 XTYPE_2D_3D = 3
  19
  20 acadrelease = {
  21     'AC1009': 'R12',
  22     'AC1012': 'R13',
  23     'AC1014': 'R14',
  24     'AC1015': 'R2000',
  25     'AC1018': 'R2004',
  26     'AC1021': 'R2007',
  27     'AC1024': 'R2010',
  28 }
  29
  30 dxfversion = {
  31     acad: dxf for dxf, acad in acadrelease.items()
  32 }
  33
  34 # Entity: Polyline, Polymesh
  35 # 70 flags
  36 POLYLINE_CLOSED = 1
  37 POLYLINE_MESH_CLOSED_M_DIRECTION = POLYLINE_CLOSED
  38 POLYLINE_CURVE_FIT_VERTICES_ADDED = 2
  39 POLYLINE_SPLINE_FIT_VERTICES_ADDED = 4
  40 POLYLINE_3D_POLYLINE = 8
  41 POLYLINE_3D_POLYMESH = 16
  42 POLYLINE_MESH_CLOSED_N_DIRECTION = 32
  43 POLYLINE_POLYFACE = 64
  44 POLYLINE_GENERATE_LINETYPE_PATTERN =128
  45
  46 # Entity: Polymesh
  47 # 75 surface smooth type
  48 POLYMESH_NO_SMOOTH = 0
  49 POLYMESH_QUADRIC_BSPLINE = 5
  50 POLYMESH_CUBIC_BSPLINE = 6
  51 POLYMESH_BEZIER_SURFACE = 8
  52
  53 #Entity: Vertex
  54 # 70 flags
  55 VERTEXNAMES = ('vtx0', 'vtx1', 'vtx2', 'vtx3')
  56 VTX_EXTRA_VERTEX_CREATED = 1 ## Extra vertex created by curve-fitting
  57 VTX_CURVE_FIT_TANGENT = 2    ## Curve-fit tangent defined for this vertex.
  58 ## A curve-fit tangent direction of 0 may be omitted from the DXF output, but is
  59 ## significant if this bit is set.
  60 ## 4 = unused, never set in dxf files
  61 VTX_SPLINE_VERTEX_CREATED = 8 ##Spline vertex created by spline-fitting
  62 VTX_SPLINE_FRAME_CONTROL_POINT = 16
  63 VTX_3D_POLYLINE_VERTEX = 32
  64 VTX_3D_POLYGON_MESH_VERTEX = 64
  65 VTX_3D_POLYFACE_MESH_VERTEX = 128
  66
  67 VERTEX_FLAGS = {
  68     'polyline2d': 0,
  69     'polyline3d': VTX_3D_POLYLINE_VERTEX,
  70     'polymesh': VTX_3D_POLYGON_MESH_VERTEX,
  71     'polyface': VTX_3D_POLYGON_MESH_VERTEX | VTX_3D_POLYFACE_MESH_VERTEX,
  72 }
  73 POLYLINE_FLAGS = {
  74     'polyline2d': 0,
  75     'polyline3d': POLYLINE_3D_POLYLINE,
  76     'polymesh': POLYLINE_3D_POLYMESH,
  77     'polyface': POLYLINE_POLYFACE,
  78 }
  79
  80 #---block-type flags (bit coded values, may be combined):
  81 # Entity: BLOCK
  82 # 70 flags
  83 BLK_ANONYMOUS = 1                # This is an anonymous block generated by hatching, associative dimensioning, other internal operations, or an application
  84 BLK_NON_CONSTANT_ATTRIBUTES = 2  # This block has non-constant attribute definitions (this bit is not set if the block has any attribute definitions that are constant, or has no attribute definitions at all)
  85 BLK_XREF = 4                     # This block is an external reference (xref)
  86 BLK_XREF_OVERLAY = 8             # This block is an xref overlay
  87 BLK_EXTERNAL = 16                # This block is externally dependent
  88 BLK_RESOLVED = 32                # This is a resolved external reference, or dependent of an external reference (ignored on input)
  89 BLK_REFERENCED = 64              # This definition is a referenced external reference (ignored on input)
  90
  91 LWPOLYLINE_CLOSED = 1
  92 LWPOLYLINE_PLINEGEN = 128
  93
  94 SPLINE_CLOSED = 1
  95 SPLINE_PERIODIC = 2
  96 SPLINE_RATIONAL = 4
  97 SPLINE_PLANAR = 8
  98 SPLINE_LINEAR = 16  # planar bit is also set
  99
 100 MTEXT_TOP_LEFT = 1
 101 MTEXT_TOP_CENTER = 2
 102 MTEXT_TOP_RIGHT = 3
 103 MTEXT_MIDDLE_LEFT = 4
 104 MTEXT_MIDDLE_CENTER = 5
 105 MTEXT_MIDDLE_RIGHT = 6
 106 MTEXT_BOTTOM_LEFT = 7
 107 MTEXT_BOTTOM_CENTER = 8
 108 MTEXT_BOTTOM_RIGHT = 9
 109
 110 MTEXT_LEFT_TO_RIGHT = 1
 111 MTEXT_TOP_TO_BOTTOM = 2
 112 MTEXT_BY_STYLE = 5