refactor: excel parse
This commit is contained in:
Blizzard
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# Copyright (c) 2018-2024 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, Sequence, Iterable, Optional, Iterator
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from ezdxf.math import Vec3, UVec, X_AXIS, Y_AXIS, Z_AXIS, Matrix44
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from ezdxf.colors import RGB
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if TYPE_CHECKING:
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from ezdxf.layouts import BaseLayout
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__all__ = ["OCS", "UCS", "PassTroughUCS"]
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def render_axis(
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layout: BaseLayout,
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start: UVec,
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points: Sequence[UVec],
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colors: RGB = RGB(1, 3, 5),
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) -> None:
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for point, color in zip(points, colors):
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layout.add_line(start, point, dxfattribs={"color": color})
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_1_OVER_64 = 1.0 / 64.0
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class OCS:
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"""Establish an :ref:`OCS` for a given extrusion vector.
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Args:
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extrusion: extrusion vector.
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"""
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def __init__(self, extrusion: UVec = Z_AXIS):
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Az = Vec3(extrusion).normalize()
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self.transform = not Az.isclose(Z_AXIS)
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if self.transform:
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if (abs(Az.x) < _1_OVER_64) and (abs(Az.y) < _1_OVER_64):
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Ax = Y_AXIS.cross(Az)
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else:
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Ax = Z_AXIS.cross(Az)
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Ax = Ax.normalize()
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Ay = Az.cross(Ax).normalize()
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self.matrix = Matrix44.ucs(Ax, Ay, Az)
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@property
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def ux(self) -> Vec3:
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"""x-axis unit vector"""
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return self.matrix.ux if self.transform else X_AXIS
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@property
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def uy(self) -> Vec3:
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"""y-axis unit vector"""
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return self.matrix.uy if self.transform else Y_AXIS
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@property
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def uz(self) -> Vec3:
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"""z-axis unit vector"""
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return self.matrix.uz if self.transform else Z_AXIS
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def from_wcs(self, point: UVec) -> Vec3:
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"""Returns OCS vector for WCS `point`."""
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p3 = Vec3(point)
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if self.transform:
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return self.matrix.ocs_from_wcs(p3)
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else:
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return p3
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def points_from_wcs(self, points: Iterable[UVec]) -> Iterator[Vec3]:
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"""Returns iterable of OCS vectors from WCS `points`."""
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_points = Vec3.generate(points)
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if self.transform:
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from_wcs = self.matrix.ocs_from_wcs
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for point in _points:
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yield from_wcs(point)
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else:
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yield from _points
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def to_wcs(self, point: UVec) -> Vec3:
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"""Returns WCS vector for OCS `point`."""
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if self.transform:
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return self.matrix.ocs_to_wcs(point)
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else:
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return Vec3(point)
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def points_to_wcs(self, points: Iterable[UVec]) -> Iterator[Vec3]:
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"""Returns iterable of WCS vectors for OCS `points`."""
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_points = Vec3.generate(points)
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if self.transform:
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to_wcs = self.matrix.ocs_to_wcs
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for point in _points:
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yield to_wcs(point)
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else:
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yield from _points
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def render_axis(
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self,
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layout: BaseLayout,
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length: float = 1,
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colors: RGB = RGB(1, 3, 5),
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) -> None:
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"""Render axis as 3D lines into a `layout`."""
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render_axis(
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layout,
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start=(0, 0, 0),
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points=(
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self.to_wcs(X_AXIS * length),
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self.to_wcs(Y_AXIS * length),
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self.to_wcs(Z_AXIS * length),
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),
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colors=colors,
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)
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class UCS:
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"""Establish a user coordinate system (:ref:`UCS`). The UCS is defined by
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the origin and two unit vectors for the x-, y- or z-axis, all axis in
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:ref:`WCS`. The missing axis is the cross product of the given axis.
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If x- and y-axis are ``None``: ux = ``(1, 0, 0)``, uy = ``(0, 1, 0)``,
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uz = ``(0, 0, 1)``.
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Unit vectors don't have to be normalized, normalization is done at
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initialization, this is also the reason why scaling gets lost by copying or
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rotating.
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Args:
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origin: defines the UCS origin in world coordinates
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ux: defines the UCS x-axis as vector in :ref:`WCS`
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uy: defines the UCS y-axis as vector in :ref:`WCS`
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uz: defines the UCS z-axis as vector in :ref:`WCS`
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"""
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def __init__(
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self,
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origin: UVec = (0, 0, 0),
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ux: Optional[UVec] = None,
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uy: Optional[UVec] = None,
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uz: Optional[UVec] = None,
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):
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if ux is None and uy is None:
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_ux: Vec3 = X_AXIS
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_uy: Vec3 = Y_AXIS
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_uz: Vec3 = Z_AXIS
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elif ux is None:
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_uy = Vec3(uy).normalize()
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_uz = Vec3(uz).normalize()
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_ux = Vec3(uy).cross(uz).normalize()
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elif uy is None:
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_ux = Vec3(ux).normalize()
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_uz = Vec3(uz).normalize()
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_uy = Vec3(uz).cross(ux).normalize()
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elif uz is None:
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_ux = Vec3(ux).normalize()
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_uy = Vec3(uy).normalize()
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_uz = Vec3(ux).cross(uy).normalize()
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else: # all axis are given
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_ux = Vec3(ux).normalize()
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_uy = Vec3(uy).normalize()
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_uz = Vec3(uz).normalize()
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self.matrix: Matrix44 = Matrix44.ucs(_ux, _uy, _uz, Vec3(origin))
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@property
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def ux(self) -> Vec3:
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"""x-axis unit vector"""
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return self.matrix.ux
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@property
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def uy(self) -> Vec3:
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"""y-axis unit vector"""
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return self.matrix.uy
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@property
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def uz(self) -> Vec3:
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"""z-axis unit vector"""
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return self.matrix.uz
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@property
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def origin(self) -> Vec3:
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"""Returns the origin"""
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return self.matrix.origin
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@origin.setter
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def origin(self, v: UVec) -> None:
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"""Set origin."""
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self.matrix.origin = v
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def copy(self) -> UCS:
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"""Returns a copy of this UCS."""
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return UCS(self.origin, self.ux, self.uy, self.uz)
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def to_wcs(self, point: Vec3) -> Vec3:
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"""Returns WCS point for UCS `point`."""
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return self.matrix.transform(point)
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def points_to_wcs(self, points: Iterable[Vec3]) -> Iterator[Vec3]:
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"""Returns iterable of WCS vectors for UCS `points`."""
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return self.matrix.transform_vertices(points)
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def direction_to_wcs(self, vector: Vec3) -> Vec3:
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"""Returns WCS direction for UCS `vector` without origin adjustment."""
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return self.matrix.transform_direction(vector)
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def from_wcs(self, point: Vec3) -> Vec3:
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"""Returns UCS point for WCS `point`."""
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return self.matrix.ucs_vertex_from_wcs(point)
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def points_from_wcs(self, points: Iterable[Vec3]) -> Iterator[Vec3]:
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"""Returns iterable of UCS vectors from WCS `points`."""
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from_wcs = self.from_wcs
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for point in points:
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yield from_wcs(point)
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def direction_from_wcs(self, vector: Vec3) -> Vec3:
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"""Returns UCS vector for WCS `vector` without origin adjustment."""
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return self.matrix.ucs_direction_from_wcs(vector)
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def to_ocs(self, point: Vec3) -> Vec3:
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"""Returns OCS vector for UCS `point`.
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The :class:`OCS` is defined by the z-axis of the :class:`UCS`.
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"""
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wpoint = self.to_wcs(point)
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return OCS(self.uz).from_wcs(wpoint)
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def points_to_ocs(self, points: Iterable[Vec3]) -> Iterator[Vec3]:
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"""Returns iterable of OCS vectors for UCS `points`.
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The :class:`OCS` is defined by the z-axis of the :class:`UCS`.
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Args:
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points: iterable of UCS vertices
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"""
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wcs = self.to_wcs
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ocs = OCS(self.uz)
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for point in points:
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yield ocs.from_wcs(wcs(point))
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def to_ocs_angle_deg(self, angle: float) -> float:
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"""Transforms `angle` from current UCS to the parent coordinate system
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(most likely the WCS) including the transformation to the OCS
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established by the extrusion vector :attr:`UCS.uz`.
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Args:
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angle: in UCS in degrees
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"""
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return self.ucs_direction_to_ocs_direction(
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Vec3.from_deg_angle(angle)
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).angle_deg
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def to_ocs_angle_rad(self, angle: float) -> float:
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"""Transforms `angle` from current UCS to the parent coordinate system
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(most likely the WCS) including the transformation to the OCS
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established by the extrusion vector :attr:`UCS.uz`.
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Args:
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angle: in UCS in radians
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"""
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return self.ucs_direction_to_ocs_direction(Vec3.from_angle(angle)).angle
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def ucs_direction_to_ocs_direction(self, direction: Vec3) -> Vec3:
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"""Transforms UCS `direction` vector into OCS direction vector of the
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parent coordinate system (most likely the WCS), target OCS is defined by
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the UCS z-axis.
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"""
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return OCS(self.uz).from_wcs(self.direction_to_wcs(direction))
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def rotate(self, axis: UVec, angle: float) -> UCS:
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"""Returns a new rotated UCS, with the same origin as the source UCS.
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The rotation vector is located in the origin and has :ref:`WCS`
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coordinates e.g. (0, 0, 1) is the WCS z-axis as rotation vector.
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Args:
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axis: arbitrary rotation axis as vector in :ref:`WCS`
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angle: rotation angle in radians
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"""
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t = Matrix44.axis_rotate(Vec3(axis), angle)
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ux, uy, uz = t.transform_vertices([self.ux, self.uy, self.uz])
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return UCS(origin=self.origin, ux=ux, uy=uy, uz=uz)
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def rotate_local_x(self, angle: float) -> UCS:
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"""Returns a new rotated UCS, rotation axis is the local x-axis.
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Args:
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angle: rotation angle in radians
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"""
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t = Matrix44.axis_rotate(self.ux, angle)
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uy, uz = t.transform_vertices([self.uy, self.uz])
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return UCS(origin=self.origin, ux=self.ux, uy=uy, uz=uz)
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def rotate_local_y(self, angle: float) -> UCS:
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"""Returns a new rotated UCS, rotation axis is the local y-axis.
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Args:
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angle: rotation angle in radians
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"""
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t = Matrix44.axis_rotate(self.uy, angle)
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ux, uz = t.transform_vertices([self.ux, self.uz])
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return UCS(origin=self.origin, ux=ux, uy=self.uy, uz=uz)
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def rotate_local_z(self, angle: float) -> UCS:
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"""Returns a new rotated UCS, rotation axis is the local z-axis.
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Args:
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angle: rotation angle in radians
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"""
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t = Matrix44.axis_rotate(self.uz, angle)
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ux, uy = t.transform_vertices([self.ux, self.uy])
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return UCS(origin=self.origin, ux=ux, uy=uy, uz=self.uz)
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def shift(self, delta: UVec) -> UCS:
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"""Shifts current UCS by `delta` vector and returns `self`.
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Args:
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delta: shifting vector
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"""
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self.origin += Vec3(delta)
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return self
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def moveto(self, location: UVec) -> UCS:
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"""Place current UCS at new origin `location` and returns `self`.
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Args:
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location: new origin in WCS
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"""
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self.origin = Vec3(location)
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return self
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def transform(self, m: Matrix44) -> UCS:
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"""General inplace transformation interface, returns `self` (floating
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interface).
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Args:
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m: 4x4 transformation matrix (:class:`ezdxf.math.Matrix44`)
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"""
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self.matrix *= m
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return self
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@property
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def is_cartesian(self) -> bool:
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"""Returns ``True`` if cartesian coordinate system."""
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return self.matrix.is_cartesian
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@staticmethod
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def from_x_axis_and_point_in_xy(
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origin: UVec, axis: UVec, point: UVec
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) -> UCS:
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"""Returns a new :class:`UCS` defined by the origin, the x-axis vector
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and an arbitrary point in the xy-plane.
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Args:
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origin: UCS origin as (x, y, z) tuple in :ref:`WCS`
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axis: x-axis vector as (x, y, z) tuple in :ref:`WCS`
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point: arbitrary point unlike the origin in the xy-plane as
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(x, y, z) tuple in :ref:`WCS`
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"""
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x_axis = Vec3(axis)
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z_axis = x_axis.cross(Vec3(point) - origin)
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return UCS(origin=origin, ux=x_axis, uz=z_axis)
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@staticmethod
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def from_x_axis_and_point_in_xz(
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origin: UVec, axis: UVec, point: UVec
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) -> UCS:
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"""Returns a new :class:`UCS` defined by the origin, the x-axis vector
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and an arbitrary point in the xz-plane.
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Args:
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origin: UCS origin as (x, y, z) tuple in :ref:`WCS`
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axis: x-axis vector as (x, y, z) tuple in :ref:`WCS`
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point: arbitrary point unlike the origin in the xz-plane as
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(x, y, z) tuple in :ref:`WCS`
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"""
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x_axis = Vec3(axis)
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xz_vector = Vec3(point) - origin
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y_axis = xz_vector.cross(x_axis)
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return UCS(origin=origin, ux=x_axis, uy=y_axis)
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@staticmethod
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def from_y_axis_and_point_in_xy(
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origin: UVec, axis: UVec, point: UVec
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) -> UCS:
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"""Returns a new :class:`UCS` defined by the origin, the y-axis vector
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and an arbitrary point in the xy-plane.
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Args:
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origin: UCS origin as (x, y, z) tuple in :ref:`WCS`
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axis: y-axis vector as (x, y, z) tuple in :ref:`WCS`
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point: arbitrary point unlike the origin in the xy-plane as
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(x, y, z) tuple in :ref:`WCS`
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"""
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y_axis = Vec3(axis)
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xy_vector = Vec3(point) - origin
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z_axis = xy_vector.cross(y_axis)
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return UCS(origin=origin, uy=y_axis, uz=z_axis)
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@staticmethod
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def from_y_axis_and_point_in_yz(
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origin: UVec, axis: UVec, point: UVec
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) -> UCS:
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"""Returns a new :class:`UCS` defined by the origin, the y-axis vector
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and an arbitrary point in the yz-plane.
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Args:
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origin: UCS origin as (x, y, z) tuple in :ref:`WCS`
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axis: y-axis vector as (x, y, z) tuple in :ref:`WCS`
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point: arbitrary point unlike the origin in the yz-plane as
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(x, y, z) tuple in :ref:`WCS`
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"""
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y_axis = Vec3(axis)
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yz_vector = Vec3(point) - origin
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x_axis = yz_vector.cross(y_axis)
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return UCS(origin=origin, ux=x_axis, uy=y_axis)
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@staticmethod
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def from_z_axis_and_point_in_xz(
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origin: UVec, axis: UVec, point: UVec
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) -> UCS:
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"""Returns a new :class:`UCS` defined by the origin, the z-axis vector
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and an arbitrary point in the xz-plane.
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Args:
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origin: UCS origin as (x, y, z) tuple in :ref:`WCS`
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axis: z-axis vector as (x, y, z) tuple in :ref:`WCS`
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point: arbitrary point unlike the origin in the xz-plane as
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(x, y, z) tuple in :ref:`WCS`
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"""
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z_axis = Vec3(axis)
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y_axis = z_axis.cross(Vec3(point) - origin)
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return UCS(origin=origin, uy=y_axis, uz=z_axis)
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@staticmethod
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def from_z_axis_and_point_in_yz(
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origin: UVec, axis: UVec, point: UVec
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) -> UCS:
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"""Returns a new :class:`UCS` defined by the origin, the z-axis vector
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and an arbitrary point in the yz-plane.
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Args:
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origin: UCS origin as (x, y, z) tuple in :ref:`WCS`
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axis: z-axis vector as (x, y, z) tuple in :ref:`WCS`
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point: arbitrary point unlike the origin in the yz-plane as
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(x, y, z) tuple in :ref:`WCS`
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"""
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z_axis = Vec3(axis)
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yz_vector = Vec3(point) - origin
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x_axis = yz_vector.cross(z_axis)
|
||||
return UCS(origin=origin, ux=x_axis, uz=z_axis)
|
||||
|
||||
def render_axis(
|
||||
self,
|
||||
layout: BaseLayout,
|
||||
length: float = 1,
|
||||
colors: RGB = RGB(1, 3, 5),
|
||||
):
|
||||
"""Render axis as 3D lines into a `layout`."""
|
||||
render_axis(
|
||||
layout,
|
||||
start=self.origin,
|
||||
points=(
|
||||
self.to_wcs(X_AXIS * length),
|
||||
self.to_wcs(Y_AXIS * length),
|
||||
self.to_wcs(Z_AXIS * length),
|
||||
),
|
||||
colors=colors,
|
||||
)
|
||||
|
||||
|
||||
class PassTroughUCS(UCS):
|
||||
"""UCS is equal to the WCS and OCS (extrusion = 0, 0, 1)"""
|
||||
|
||||
def __init__(self):
|
||||
super().__init__()
|
||||
|
||||
def to_wcs(self, point: Vec3) -> Vec3:
|
||||
return point
|
||||
|
||||
def points_to_wcs(self, points: Iterable[Vec3]) -> Iterator[Vec3]:
|
||||
return iter(points)
|
||||
|
||||
def to_ocs(self, point: Vec3) -> Vec3:
|
||||
return point
|
||||
|
||||
def points_to_ocs(self, points: Iterable[Vec3]) -> Iterator[Vec3]:
|
||||
return iter(points)
|
||||
|
||||
def to_ocs_angle_deg(self, angle: float) -> float:
|
||||
return angle
|
||||
|
||||
def to_ocs_angle_rad(self, angle: float) -> float:
|
||||
return angle
|
||||
|
||||
def from_wcs(self, point: Vec3) -> Vec3:
|
||||
return point
|
||||
|
||||
def points_from_wcs(self, points: Iterable[Vec3]) -> Iterator[Vec3]:
|
||||
return iter(points)
|
||||
Reference in New Issue
Block a user