initial
This commit is contained in:
Christian Anetzberger
259
.venv/lib/python3.12/site-packages/ezdxf/entities/vport.py
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259
.venv/lib/python3.12/site-packages/ezdxf/entities/vport.py
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# Copyright (c) 2019-2022, Manfred Moitzi
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# License: MIT License
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from __future__ import annotations
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from typing import TYPE_CHECKING, Optional
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import logging
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from ezdxf.lldxf import validator
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from ezdxf.lldxf.attributes import (
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DXFAttr,
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DXFAttributes,
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DefSubclass,
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XType,
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RETURN_DEFAULT,
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group_code_mapping,
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)
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from ezdxf.lldxf.const import DXF12, SUBCLASS_MARKER, DXF2000, DXF2007
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from ezdxf.lldxf.validator import is_valid_vport_name
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from ezdxf.math import Vec2, NULLVEC, Z_AXIS
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from ezdxf.entities.dxfentity import base_class, SubclassProcessor, DXFEntity
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from ezdxf.entities.layer import acdb_symbol_table_record
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from .factory import register_entity
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if TYPE_CHECKING:
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from ezdxf.entities import DXFNamespace
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from ezdxf.lldxf.tagwriter import AbstractTagWriter
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__all__ = ["VPort"]
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logger = logging.getLogger("ezdxf")
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acdb_vport = DefSubclass(
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"AcDbViewportTableRecord",
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{
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"name": DXFAttr(2, validator=is_valid_vport_name),
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"flags": DXFAttr(70, default=0),
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"lower_left": DXFAttr(10, xtype=XType.point2d, default=Vec2(0, 0)),
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"upper_right": DXFAttr(11, xtype=XType.point2d, default=Vec2(1, 1)),
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"center": DXFAttr(12, xtype=XType.point2d, default=Vec2(0, 0)),
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"snap_base": DXFAttr(13, xtype=XType.point2d, default=Vec2(0, 0)),
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"snap_spacing": DXFAttr(
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14, xtype=XType.point2d, default=Vec2(0.5, 0.5)
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),
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"grid_spacing": DXFAttr(
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15, xtype=XType.point2d, default=Vec2(0.5, 0.5)
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),
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"direction": DXFAttr(
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16,
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xtype=XType.point3d,
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default=Z_AXIS,
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validator=validator.is_not_null_vector,
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fixer=RETURN_DEFAULT,
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),
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"target": DXFAttr(17, xtype=XType.point3d, default=NULLVEC),
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# height: DXF reference error: listed as group code 45
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"height": DXFAttr(40, default=1000),
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"aspect_ratio": DXFAttr(41, default=1.34),
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"focal_length": DXFAttr(42, default=50),
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"front_clipping": DXFAttr(43, default=0),
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"back_clipping": DXFAttr(44, default=0),
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"snap_rotation": DXFAttr(50, default=0),
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"view_twist": DXFAttr(51, default=0),
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"view_mode": DXFAttr(71, default=0),
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"circle_sides": DXFAttr(72, default=1000),
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"fast_zoom": DXFAttr(73, default=1), # removed in R2007
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# ucs_icon:
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# bit 0: 0=hide, 1=show
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# bit 1: 0=display in lower left corner, 1=display at origin
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"ucs_icon": DXFAttr(74, default=3), # show at origin
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"snap_on": DXFAttr(75, default=0), # removed in R2007
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"grid_on": DXFAttr(76, default=0), # removed in R2007
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"snap_style": DXFAttr(77, default=0), # removed in R2007
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"snap_isopair": DXFAttr(78, default=0), # removed in R2007
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# R2000: 331 or 441 (optional) - ignored by ezdxf
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# Soft or hard-pointer ID/handle to frozen layer objects;
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# repeats for each frozen layers
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# 70: Bit flags and perspective mode
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# CTB-File?
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"plot_style_sheet": DXFAttr(1, dxfversion=DXF2007),
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# Render mode:
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# 0 = 2D Optimized (classic 2D)
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# 1 = Wireframe
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# 2 = Hidden line
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# 3 = Flat shaded
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# 4 = Gouraud shaded
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# 5 = Flat shaded with wireframe
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# 6 = Gouraud shaded with wireframe
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# All rendering modes other than 2D Optimized engage the new 3D graphics
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# pipeline. These values directly correspond to the SHADEMODE command and
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# the AcDbAbstractViewTableRecord::RenderMode enum
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"render_mode": DXFAttr(
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281,
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default=0,
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dxfversion=DXF2000,
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validator=validator.is_in_integer_range(0, 7),
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fixer=RETURN_DEFAULT,
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),
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# Value of UCSVP for this viewport. If set to 1, then viewport stores its
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# own UCS which will become the current UCS whenever the viewport is
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# activated. If set to 0, UCS will not change when this viewport is
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# activated
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"ucs_vp": DXFAttr(
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65,
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dxfversion=DXF2000,
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default=0,
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validator=validator.is_integer_bool,
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fixer=RETURN_DEFAULT,
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),
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"ucs_origin": DXFAttr(110, xtype=XType.point3d, dxfversion=DXF2000),
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"ucs_xaxis": DXFAttr(
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111,
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xtype=XType.point3d,
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dxfversion=DXF2000,
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validator=validator.is_not_null_vector,
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),
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"ucs_yaxis": DXFAttr(
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112,
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xtype=XType.point3d,
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dxfversion=DXF2000,
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validator=validator.is_not_null_vector,
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),
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# Handle of AcDbUCSTableRecord if UCS is a named UCS. If not present,
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# then UCS is unnamed:
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"ucs_handle": DXFAttr(345, dxfversion=DXF2000),
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# Handle of AcDbUCSTableRecord of base UCS if UCS is orthographic (79 code
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# is non-zero). If not present and 79 code is non-zero, then base UCS is
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# taken to be WORLD:
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"base_ucs_handle": DXFAttr(346, dxfversion=DXF2000),
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# UCS ortho type:
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# 0 = UCS is not orthographic
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# 1 = Top
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# 2 = Bottom
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# 3 = Front
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# 4 = Back
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# 5 = Left
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# 6 = Right
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"ucs_ortho_type": DXFAttr(
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79,
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dxfversion=DXF2000,
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validator=validator.is_in_integer_range(0, 7),
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),
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"elevation": DXFAttr(146, dxfversion=DXF2000, default=0),
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"unknown1": DXFAttr(60, dxfversion=DXF2000),
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"shade_plot_setting": DXFAttr(170, dxfversion=DXF2007),
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"major_grid_lines": DXFAttr(61, dxfversion=DXF2007),
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# Handle to background object
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"background_handle": DXFAttr(332, dxfversion=DXF2007, optional=True),
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# Handle to shade plot object
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"shade_plot_handle": DXFAttr(333, dxfversion=DXF2007, optional=True),
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# Handle to visual style object
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"visual_style_handle": DXFAttr(348, dxfversion=DXF2007, optional=True),
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"default_lighting_on": DXFAttr(
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292,
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dxfversion=DXF2007,
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validator=validator.is_integer_bool,
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),
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# Default lighting type:
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# 0 = One distant light
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# 1 = Two distant lights
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"default_lighting_type": DXFAttr(
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282,
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dxfversion=DXF2007,
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validator=validator.is_integer_bool,
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),
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"brightness": DXFAttr(141, dxfversion=DXF2000),
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"contrast": DXFAttr(142, dxfversion=DXF2000),
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"ambient_color_aci": DXFAttr(63, dxfversion=DXF2000, optional=True),
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"ambient_true_color": DXFAttr(421, dxfversion=DXF2000, optional=True),
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"ambient_color_name": DXFAttr(431, dxfversion=DXF2000, optional=True),
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# Hard-pointer handle to sun object:
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"sun_handle": DXFAttr(361, dxfversion=DXF2007, optional=True),
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},
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)
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acdb_vport_group_codes = group_code_mapping(acdb_vport)
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@register_entity
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class VPort(DXFEntity):
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"""DXF VIEW entity"""
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DXFTYPE = "VPORT"
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DXFATTRIBS = DXFAttributes(base_class, acdb_symbol_table_record, acdb_vport)
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def load_dxf_attribs(
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self, processor: Optional[SubclassProcessor] = None
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) -> DXFNamespace:
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dxf = super().load_dxf_attribs(processor)
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if processor:
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processor.fast_load_dxfattribs(
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dxf, acdb_vport_group_codes, subclass=2
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)
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return dxf
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def export_entity(self, tagwriter: AbstractTagWriter) -> None:
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super().export_entity(tagwriter)
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dxfversion = tagwriter.dxfversion
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if dxfversion > DXF12:
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tagwriter.write_tag2(SUBCLASS_MARKER, acdb_symbol_table_record.name)
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tagwriter.write_tag2(SUBCLASS_MARKER, acdb_vport.name)
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self.dxf.export_dxf_attribs(
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tagwriter,
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[
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"name",
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"flags",
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"lower_left",
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"upper_right",
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"center",
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"snap_base",
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"snap_spacing",
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"grid_spacing",
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"direction",
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"target",
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"height",
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"aspect_ratio",
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"focal_length",
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"front_clipping",
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"back_clipping",
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"snap_rotation",
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"view_twist",
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"view_mode",
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"circle_sides",
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"fast_zoom",
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"ucs_icon",
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"snap_on",
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"grid_on",
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"snap_style",
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"snap_isopair",
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"plot_style_sheet",
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"render_mode",
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"ucs_vp",
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"ucs_origin",
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"ucs_xaxis",
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"ucs_yaxis",
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"ucs_handle",
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"base_ucs_handle",
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"ucs_ortho_type",
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"elevation",
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"unknown1",
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"shade_plot_setting",
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"major_grid_lines",
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"background_handle",
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"shade_plot_handle",
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"visual_style_handle",
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"default_lighting_on",
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"default_lighting_type",
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"brightness",
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"contrast",
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"ambient_color_aci",
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"ambient_true_color",
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"ambient_color_name",
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],
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)
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def reset_wcs(self) -> None:
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"""Reset coordinate system to the :ref:`WCS`."""
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self.dxf.ucs_vp = 1
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self.dxf.ucs_origin = (0, 0, 0)
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self.dxf.ucs_xaxis = (1, 0, 0)
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self.dxf.ucs_yaxis = (0, 1, 0)
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self.dxf.ucs_ortho_type = 0
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self.dxf.discard("ucs_handle")
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self.dxf.discard("base_ucs_handle")
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