Draft: Point array: Take placement of point object into account and accept more point object types
This commit is contained in:
Roy-043
@@ -23,33 +23,21 @@
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# * *
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# ***************************************************************************
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"""Provides the object code for the PointArray object.
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To Do
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-----
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This object currently uses the points inside a `Draft Block`,
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a `Part::Compound`, or a `Sketch`. To make this more general,
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this object could be augmented to extract a list of points
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from the vertices of any object with a `Part::TopoShape` (2D or 3D).
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See the `get_point_list` function for more information.
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"""
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## @package pointarray
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# \ingroup draftobjects
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# \brief Provides the object code for the PointArray object.
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import lazy_loader.lazy_loader as lz
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from PySide.QtCore import QT_TRANSLATE_NOOP
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import FreeCAD as App
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import DraftVecUtils
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import draftutils.utils as utils
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from draftutils.messages import _wrn, _err
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from draftutils.translate import translate
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from draftobjects.draftlink import DraftLink
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# Delay import of module until first use because it is heavy
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Part = lz.LazyLoader("Part", globals(), "Part")
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## \addtogroup draftobjects
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# @{
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@@ -75,7 +63,7 @@ class PointArray(DraftLink):
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properties = obj.PropertiesList
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if "Base" not in properties:
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_tip = QT_TRANSLATE_NOOP("App::Property","Base object that will be duplicated")
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_tip = QT_TRANSLATE_NOOP("App::Property", "Base object that will be duplicated")
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obj.addProperty("App::PropertyLink",
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"Base",
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"Objects",
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@@ -83,7 +71,7 @@ class PointArray(DraftLink):
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obj.Base = None
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if "PointObject" not in properties:
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_tip = QT_TRANSLATE_NOOP("App::Property", "Object containing points used to distribute the base object, for example, a sketch or a Part compound.\nThe sketch or compound must contain at least one explicit point or vertex object.")
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_tip = QT_TRANSLATE_NOOP("App::Property", "Object containing points used to distribute the copies.")
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obj.addProperty("App::PropertyLink",
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"PointObject",
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"Objects",
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@@ -91,7 +79,7 @@ class PointArray(DraftLink):
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obj.PointObject = None
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if "Count" not in properties:
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_tip = QT_TRANSLATE_NOOP("App::Property","Total number of elements in the array.\nThis property is read-only, as the number depends on the points contained within 'Point Object'.")
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_tip = QT_TRANSLATE_NOOP("App::Property", "Number of copies in the array.\nThis property is read-only, as the number depends on the points in 'Point Object'.")
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obj.addProperty("App::PropertyInteger",
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"Count",
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"Objects",
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@@ -100,7 +88,7 @@ class PointArray(DraftLink):
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obj.setEditorMode("Count", 1) # Read only
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if "ExtraPlacement" not in properties:
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_tip = QT_TRANSLATE_NOOP("App::Property","Additional placement, shift and rotation, that will be applied to each copy")
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_tip = QT_TRANSLATE_NOOP("App::Property", "Additional placement, shift and rotation, that will be applied to each copy")
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obj.addProperty("App::PropertyPlacement",
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"ExtraPlacement",
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"Objects",
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@@ -108,7 +96,7 @@ class PointArray(DraftLink):
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obj.ExtraPlacement = App.Placement()
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if self.use_link and "ExpandArray" not in properties:
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_tip = QT_TRANSLATE_NOOP("App::Property","Show the individual array elements (only for Link arrays)")
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_tip = QT_TRANSLATE_NOOP("App::Property", "Show the individual array elements (only for Link arrays)")
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obj.addProperty("App::PropertyBool",
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"ExpandArray",
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"Objects",
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@@ -118,8 +106,8 @@ class PointArray(DraftLink):
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def execute(self, obj):
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"""Run when the object is created or recomputed."""
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pt_list, count = get_point_list(obj.PointObject)
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obj.Count = count
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pt_list = get_point_list(obj.PointObject)
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obj.Count = len(pt_list)
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pls = build_placements(obj.Base, pt_list, obj.ExtraPlacement)
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return super(PointArray, self).buildShape(obj, obj.Placement, pls)
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@@ -161,82 +149,62 @@ class PointArray(DraftLink):
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_wrn("v0.19, " + obj.Label + ", " + translate("draft","added property 'ExtraPlacement'"))
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def remove_equal_vecs (vec_list):
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"""Remove equal vectors from a list.
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Parameters
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----------
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vec_list: list of App.Vectors
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Returns
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-------
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list of App.Vectors
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"""
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res_list = []
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for vec in vec_list:
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for res in res_list:
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if DraftVecUtils.equals(vec, res):
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break
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else:
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res_list.append(vec)
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return res_list
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def get_point_list(point_object):
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"""Extract a list of points from a point object.
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Parameters
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----------
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point_object: Part::Feature
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Either a `Draft Block`, a `Part::Compound`,
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or a `Sketcher::SketchObject` containing points.
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point_object: Part::Feature, Sketcher::SketchObject, Mesh::Feature
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or Points::FeatureCustom
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The object must have vertices and/or points.
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Returns
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-------
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list, int
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A list of points that have `X`, `Y`, `Z` coordinates;
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the second element is the number of elements.
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If the list is empty, the second element is zero.
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To Do
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-----
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- This function currently extracts the points inside a `Draft Block`,
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a `Part::Compound`, or a `Sketch`. To make this more general,
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this function could be augmented to extract a list of points
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from the vertices of any object with a `Part::TopoShape` (2D or 3D).
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- If the input is a `Part::Compound`, it should handle all valid types
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of objects simultaneously, that is, `Draft Points`, `Part::Vertexes`,
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`Sketches` with points, and possibly any other object with
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a `Part::TopoShape` as in the previous point.
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It should recursively call itself to extract
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points contained in nested compounds.
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list of App.Vectors
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"""
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# If its a clone, extract the real object
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while utils.get_type(point_object) == 'Clone':
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point_object = point_object.Objects[0]
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if hasattr(point_object, "Shape") and hasattr(point_object.Shape, "Vertexes"):
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pt_list = [v.Point for v in point_object.Shape.Vertexes]
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# For compatibility with previous versions: add all points from sketch (including construction geometry):
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if hasattr(point_object, 'Geometry'):
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place = point_object.Placement
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for geo in point_object.Geometry:
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if geo.TypeId == "Part::GeomPoint":
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pt_list.append(place.multVec(App.Vector(geo.X, geo.Y, geo.Z)))
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elif hasattr(point_object, "Mesh"):
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pt_list = [p.Vector for p in point_object.Mesh.Points]
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elif hasattr(point_object, "Points"):
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pt_list = point_object.Points.Points
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else:
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return []
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# If the point object doesn't have actual points
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# the point list will remain empty
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pt_list = list()
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if hasattr(point_object, 'Geometry'):
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# Intended for a Sketcher::SketchObject, which has this property
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place = point_object.Placement
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for geo in point_object.Geometry:
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# It must contain at least one Part::GeomPoint.
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if (hasattr(geo, 'X')
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and hasattr(geo, 'Y') and hasattr(geo, 'Z')):
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point = geo.copy()
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point.translate(place.Base)
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point.rotate(place)
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pt_list.append(point)
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count = len(pt_list)
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return pt_list, count
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obj_list = list()
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if hasattr(point_object, 'Links'):
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# Intended for a Part::Compound, which has this property
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obj_list = point_object.Links
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elif hasattr(point_object, 'Components'):
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# Intended for a Draft Block, which has this property
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obj_list = point_object.Components
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# These compounds should have at least one discrete point object
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# like a Draft Point or a Part::Vertex
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for _obj in obj_list:
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if hasattr(_obj, 'X') and hasattr(_obj, 'Y') and hasattr(_obj, 'Z'):
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pt_list.append(_obj)
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count = len(pt_list)
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return pt_list, count
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return remove_equal_vecs(pt_list)
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def build_placements(base_object, pt_list=None, placement=App.Placement()):
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"""Build a placements from the base object and list of points.
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Returns
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-------
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list(App.Placement)
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list of App.Placements
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"""
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if not pt_list:
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_err(translate("Draft",
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@@ -255,69 +223,12 @@ def build_placements(base_object, pt_list=None, placement=App.Placement()):
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# are combined by multiplying them.
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new_pla.Base = placement.Base
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new_pla.Rotation = original_rotation * placement.Rotation
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if point.TypeId == "Part::Vertex":
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# For this object the final position is the value of the Placement
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# plus the value of the X, Y, Z properties
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place = App.Vector(point.X,
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point.Y,
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point.Z) + point.Placement.Base
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elif hasattr(point, 'Placement'):
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# If the point object has a placement (Draft Point), use it
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# to displace the copy of the shape
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place = point.Placement.Base
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# The following old code doesn't make much sense because it uses
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# the rotation value of the auxiliary point.
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# Even if the point does have a rotation property as part of its
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# placement, rotating a point by itself is a strange workflow.
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# We want to use the position of the point but not its rotation,
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# which will probably be zero anyway.
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# Old code:
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# place = point.Placement
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# new_shape.rotate(place.Base,
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# place.Rotation.Axis,
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# math.degrees(place.Rotation.Angle))
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else:
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# In other cases (Sketch with points)
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# translate by the X, Y, Z coordinates
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place = App.Vector(point.X, point.Y, point.Z)
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new_pla.translate(place)
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new_pla.translate(point)
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pls.append(new_pla)
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return pls
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def build_copies(base_object, pt_list=None, placement=App.Placement()):
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"""Build a compound of copies from the base object and list of points.
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Returns
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-------
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Part::TopoShape
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The compound shape created by `Part.makeCompound`.
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"""
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if not pt_list:
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_err(translate("Draft",
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"Point object doesn't have a discrete point, "
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"it cannot be used for an array."))
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shape = base_object.Shape.copy()
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return shape
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copies = list()
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for pla in build_copies(base_object, pt_list, placement):
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new_shape = base_object.Shape.copy()
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new_shape.Placement = pla
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copies.append(new_shape)
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shape = Part.makeCompound(copies)
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return shape
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# Alias for compatibility with v0.18 and earlier
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_PointArray = PointArray
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