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# ***************************************************************************
# * Copyright (c) 2010 Yorik van Havre <yorik@uncreated.net> *
# * Copyright (c) 2010 Ken Cline <cline@frii.com> *
# * Copyright (c) 2020 Carlo Pavan <carlopav@gmail.com> *
# * *
# * This program is free software; you can redistribute it and/or modify *
# * it under the terms of the GNU Lesser General Public License (LGPL) *
# * as published by the Free Software Foundation; either version 2 of *
# * the License, or (at your option) any later version. *
# * for detail see the LICENCE text file. *
# * *
# * This program is distributed in the hope that it will be useful, *
# * but WITHOUT ANY WARRANTY; without even the implied warranty of *
# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
# * GNU Library General Public License for more details. *
# * *
# * You should have received a copy of the GNU Library General Public *
# * License along with this program; if not, write to the Free Software *
# * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 *
# * USA *
# * *
# ***************************************************************************
"""Provides support functions to edit Draft objects.
All functions in this module work with Object coordinate space.
No conversion to global coordinate system is needed.
To support an new Object, Draft_Edit needs at least two functions:
getObjectPts(obj): returns a list of points on which Draft_Edit will display
edit trackers
updateObject(obj, nodeIndex, v): update the give object according to the
index of a moved edit tracker and the vector of the displacement
TODO: Abstract the code that handles the preview and move the object specific
code to this module from main Draft_Edit module
"""
## @package gui_edit_draft_objects
# \ingroup draftguitools
# \brief Provides support functions to edit Draft objects.
__title__ = "FreeCAD Draft Edit Tool"
__author__ = (
"Yorik van Havre, Werner Mayer, Martin Burbaum, Ken Cline, " "Dmitry Chigrin, Carlo Pavan"
)
__url__ = "https://www.freecad.org"
## \addtogroup draftguitools
# @{
import math
import FreeCAD as App
import FreeCADGui as Gui
import DraftVecUtils
from draftutils.translate import translate
import draftutils.utils as utils
from draftutils.messages import _err
import draftguitools.gui_trackers as trackers
from draftguitools.gui_edit_base_object import GuiTools
class DraftWireGuiTools(GuiTools):
def __init__(self):
pass
def get_edit_points(self, obj):
editpoints = []
for p in obj.Points:
editpoints.append(p)
return editpoints
def update_object_from_edit_points(self, obj, node_idx, v, alt_edit_mode=0):
pts = obj.Points
tol = 0.001 # TODO : Use default precision
if node_idx == 0 and (v - pts[-1]).Length < tol:
# DNC: user moved first point over last point -> Close curve
obj.Closed = True
pts[0] = v
del pts[-1]
obj.Points = pts
return
elif node_idx == len(pts) - 1 and (v - pts[0]).Length < tol:
# DNC: user moved last point over first point -> Close curve
obj.Closed = True
del pts[-1]
obj.Points = pts
return
elif v in pts:
# DNC: checks if point enter is equal to other, this could cause a OCC problem
_err = translate("draft", "This object does not support possible " "coincident points")
App.Console.PrintMessage(_err + "\n")
return
# TODO: Make consistent operation with trackers and open wires
# See: https://forum.freecad.org/viewtopic.php?f=23&t=56661
# if obj.Closed:
# # DNC: project the new point to the plane of the face if present
# if hasattr(obj.Shape, "normalAt"):
# normal = obj.Shape.normalAt(0,0)
# point_on_plane = obj.Shape.Vertexes[0].Point
# v.projectToPlane(point_on_plane, normal)
pts[node_idx] = v
obj.Points = pts
def get_edit_point_context_menu(self, edit_command, obj, node_idx):
return [
(translate("draft", "Delete Point"), lambda: self.delete_point(obj, node_idx)),
]
def get_edit_obj_context_menu(self, edit_command, obj, position):
return [
(translate("draft", "Add Point"), lambda: self.add_point(edit_command, obj, position)),
(self.get_open_close_menu_text(obj), lambda: self.open_close_wire(obj)),
(self.get_reverse_menu_text(obj), lambda: self.reverse_wire(obj)),
]
def get_open_close_menu_text(self, obj):
"""This function is overridden in the DraftBSplineGuiTools class."""
if obj.Closed:
return translate("draft", "Open Wire")
else:
return translate("draft", "Close Wire")
def get_reverse_menu_text(self, obj):
"""This function is overridden in the DraftBSplineGuiTools class."""
return translate("draft", "Reverse Wire")
def init_preview_object(self, obj):
return trackers.wireTracker(obj.Shape)
def update_preview_object(self, edit_command, obj, node_idx, v):
if utils.get_type(obj) in ["Wire"]:
pointList = edit_command.globalize_vectors(obj, obj.Points)
pointList[node_idx] = v
if obj.Closed:
pointList.append(pointList[0])
edit_command.ghost.updateFromPointlist(pointList)
def add_point(self, edit_command, obj, pos):
"""Add point to obj."""
info, newPoint = edit_command.get_specific_object_info(obj, pos)
if not info:
return
if not "Edge" in info["Component"]:
return
edgeIndex = int(info["Component"][4:])
newPoints = []
if hasattr(obj, "ChamferSize") and hasattr(obj, "FilletRadius"):
# TODO: If Draft_Wire fails to calculate one of the fillets or chamfers
# this algo fails to identify the correct edge
if obj.ChamferSize > 0 and obj.FilletRadius > 0:
edgeIndex = (edgeIndex + 3) / 4
elif obj.ChamferSize > 0 or obj.FilletRadius > 0:
edgeIndex = (edgeIndex + 1) / 2
for index, point in enumerate(obj.Points):
if index == edgeIndex:
newPoints.append(edit_command.localize_vector(obj, newPoint))
newPoints.append(point)
if obj.Closed and edgeIndex == len(obj.Points):
# last segment when object is closed
newPoints.append(edit_command.localize_vector(obj, newPoint))
obj.Points = newPoints
obj.recompute()
def delete_point(self, obj, node_idx):
if len(obj.Points) <= 2:
_err(translate("draft", "Active object must have more than 2 points or nodes"))
return
pts = obj.Points
pts.pop(node_idx)
obj.Points = pts
obj.recompute()
def open_close_wire(self, obj):
obj.Closed = not obj.Closed
obj.recompute()
def reverse_wire(self, obj):
obj.Points = reversed(obj.Points)
obj.recompute()
class DraftBSplineGuiTools(DraftWireGuiTools):
def get_open_close_menu_text(self, obj):
if obj.Closed:
return translate("draft", "Open Spline")
else:
return translate("draft", "Close Spline")
def get_reverse_menu_text(self, obj):
return translate("draft", "Reverse Spline")
def init_preview_object(self, obj):
return trackers.bsplineTracker()
def update_preview_object(self, edit_command, obj, node_idx, v):
pointList = edit_command.globalize_vectors(obj, obj.Points)
pointList[node_idx] = v
if obj.Closed:
pointList.append(pointList[0])
edit_command.ghost.update(pointList)
def add_point(self, edit_command, obj, pos):
"""Add point to obj."""
info, global_pt = edit_command.get_specific_object_info(obj, pos)
pt = edit_command.localize_vector(obj, global_pt)
if not info or (pt is None):
return
pts = obj.Points
if obj.Closed:
curve = obj.Shape.Edges[0].Curve
else:
curve = obj.Shape.Curve
uNewPoint = curve.parameter(obj.Placement.multVec(pt))
uPoints = curve.getKnots()
for i in range(len(uPoints) - 1):
if (uNewPoint > uPoints[i]) and (uNewPoint < uPoints[i + 1]):
pts.insert(i + 1, pt)
break
# DNC: fix: add points to last segment if curve is closed
if obj.Closed and (uNewPoint > uPoints[-1]):
pts.append(pt)
obj.Points = pts
obj.recompute()
class DraftRectangleGuiTools(GuiTools):
def __init__(self):
pass
def get_edit_points(self, obj):
"""Return the list of edipoints for the given Draft Rectangle.
0 : Placement.Base
1 : Length
2 : Height
"""
editpoints = []
editpoints.append(App.Vector(0, 0, 0))
editpoints.append(App.Vector(obj.Length, 0, 0))
editpoints.append(App.Vector(0, obj.Height, 0))
return editpoints
def update_object_from_edit_points(self, obj, node_idx, v, alt_edit_mode=0):
if node_idx == 0:
obj.Placement.Base = obj.Placement.multVec(v)
elif node_idx == 1:
obj.Length = DraftVecUtils.project(v, App.Vector(1, 0, 0)).Length
elif node_idx == 2:
obj.Height = DraftVecUtils.project(v, App.Vector(0, 1, 0)).Length
class DraftCircleGuiTools(GuiTools):
def __init__(self):
pass
def get_edit_points(self, obj):
"""Return the list of edipoints for the given Draft Arc or Circle.
circle:
0 : Placement.Base or center
1 : radius
arc:
0 : Placement.Base or center
1 : first endpoint
2 : second endpoint
3 : midpoint
"""
editpoints = []
editpoints.append(App.Vector(0, 0, 0))
if obj.FirstAngle == obj.LastAngle:
# obj is a circle
editpoints.append(App.Vector(obj.Radius, 0, 0))
else:
# obj is an arc
editpoints.append(self.getArcStart(obj)) # First endpoint
editpoints.append(self.getArcEnd(obj)) # Second endpoint
editpoints.append(self.getArcMid(obj)) # Midpoint
return editpoints
def update_object_from_edit_points(self, obj, node_idx, v, alt_edit_mode=0):
if obj.FirstAngle == obj.LastAngle:
# object is a circle
if node_idx == 0:
obj.Placement.Base = obj.Placement.multVec(v)
elif node_idx == 1:
obj.Radius = v.Length
else:
# obj is an arc
if alt_edit_mode == 0:
import Part
if node_idx == 0:
# center point
p1 = self.getArcStart(obj)
p2 = self.getArcEnd(obj)
p0 = DraftVecUtils.project(v, self.getArcMid(obj))
obj.Radius = p1.sub(p0).Length
obj.FirstAngle = -math.degrees(DraftVecUtils.angle(p1.sub(p0)))
obj.LastAngle = -math.degrees(DraftVecUtils.angle(p2.sub(p0)))
obj.Placement.Base = obj.Placement.multVec(p0)
else:
"""Edit arc by 3 points."""
v = obj.Placement.multVec(v)
p1 = obj.Placement.multVec(self.getArcStart(obj))
p2 = obj.Placement.multVec(self.getArcMid(obj))
p3 = obj.Placement.multVec(self.getArcEnd(obj))
if node_idx == 1: # first point
p1 = v
elif node_idx == 3: # midpoint
p2 = v
elif node_idx == 2: # second point
p3 = v
arc = Part.ArcOfCircle(p1, p2, p3)
import Part
s = arc.toShape()
# Part.show(s) DEBUG
p0 = arc.Location
obj.Placement.Base = p0
obj.Radius = arc.Radius
delta = s.Vertexes[0].Point
obj.FirstAngle = -math.degrees(DraftVecUtils.angle(p1.sub(p0)))
delta = s.Vertexes[1].Point
obj.LastAngle = -math.degrees(DraftVecUtils.angle(p3.sub(p0)))
elif alt_edit_mode == 1:
# edit arc by center radius FirstAngle LastAngle
if node_idx == 0:
obj.Placement.Base = obj.Placement.multVec(v)
else:
dangle = math.degrees(math.atan2(v[1], v[0]))
if node_idx == 1:
obj.FirstAngle = dangle
elif node_idx == 2:
obj.LastAngle = dangle
elif node_idx == 3:
obj.Radius = v.Length
def get_edit_point_context_menu(self, edit_command, obj, node_idx):
actions = None
if obj.FirstAngle != obj.LastAngle:
if node_idx == 0: # user is over arc start point
return [
(
translate("draft", "Move Arc"),
lambda: self.handle_move_arc(edit_command, obj, node_idx),
),
]
elif node_idx == 1: # user is over arc start point
return [
(
translate("draft", "Set First Angle"),
lambda: self.handle_set_first_angle(edit_command, obj, node_idx),
),
]
elif node_idx == 2: # user is over arc end point
return [
(
translate("draft", "Set Last Angle"),
lambda: self.handle_set_last_angle(edit_command, obj, node_idx),
),
]
elif node_idx == 3: # user is over arc mid point
return [
(
translate("draft", "Set Radius"),
lambda: self.handle_set_radius(edit_command, obj, node_idx),
),
]
def handle_move_arc(self, edit_command, obj, node_idx):
edit_command.alt_edit_mode = 1
edit_command.startEditing(obj, node_idx)
def handle_set_first_angle(self, edit_command, obj, node_idx):
edit_command.alt_edit_mode = 1
edit_command.startEditing(obj, node_idx)
def handle_set_last_angle(self, edit_command, obj, node_idx):
edit_command.alt_edit_mode = 1
edit_command.startEditing(obj, node_idx)
def handle_set_radius(self, edit_command, obj, node_idx):
edit_command.alt_edit_mode = 1
edit_command.startEditing(obj, node_idx)
def get_edit_obj_context_menu(self, edit_command, obj, position):
# Do not show the `Invert arc` option for circles:
if obj.FirstAngle == obj.LastAngle:
return
return [
(translate("draft", "Invert Arc"), lambda: self.arcInvert(obj)),
]
def init_preview_object(self, obj):
return trackers.arcTracker()
def update_preview_object(self, edit_command, obj, node_idx, v):
edit_command.ghost.setCenter(obj.getGlobalPlacement().Base)
edit_command.ghost.setRadius(obj.Radius)
if obj.FirstAngle == obj.LastAngle:
# obj is a circle
edit_command.ghost.circle = True
if node_idx == 0:
edit_command.ghost.setCenter(v)
elif node_idx == 1:
radius = v.sub(obj.getGlobalPlacement().Base).Length
edit_command.ghost.setRadius(radius)
else:
if edit_command.alt_edit_mode == 0:
# edit by 3 points
if node_idx == 0:
# center point
p1 = edit_command.localize_vector(obj, obj.Shape.Vertexes[0].Point)
p2 = edit_command.localize_vector(obj, obj.Shape.Vertexes[1].Point)
p0 = DraftVecUtils.project(
edit_command.localize_vector(obj, v),
edit_command.localize_vector(
obj, (self.getArcMid(obj, global_placement=True))
),
)
edit_command.ghost.autoinvert = False
edit_command.ghost.setRadius(p1.sub(p0).Length)
edit_command.ghost.setStartPoint(obj.Shape.Vertexes[1].Point)
edit_command.ghost.setEndPoint(obj.Shape.Vertexes[0].Point)
edit_command.ghost.setCenter(edit_command.globalize_vector(obj, p0))
return
else:
p1 = self.getArcStart(obj, global_placement=True)
p2 = self.getArcMid(obj, global_placement=True)
p3 = self.getArcEnd(obj, global_placement=True)
if node_idx == 1:
p1 = v
elif node_idx == 3:
p2 = v
elif node_idx == 2:
p3 = v
edit_command.ghost.setBy3Points(p1, p2, p3)
elif edit_command.alt_edit_mode == 1:
# edit by center radius angles
edit_command.ghost.setStartAngle(math.radians(obj.FirstAngle))
edit_command.ghost.setEndAngle(math.radians(obj.LastAngle))
if node_idx == 0:
edit_command.ghost.setCenter(v)
elif node_idx == 1:
edit_command.ghost.setStartPoint(v)
elif node_idx == 2:
edit_command.ghost.setEndPoint(v)
elif node_idx == 3:
edit_command.ghost.setRadius(edit_command.localize_vector(obj, v).Length)
def getArcStart(self, obj, global_placement=False): # Returns object midpoint
if utils.get_type(obj) == "Circle":
return self.pointOnCircle(obj, obj.FirstAngle, global_placement)
def getArcEnd(self, obj, global_placement=False): # Returns object midpoint
if utils.get_type(obj) == "Circle":
return self.pointOnCircle(obj, obj.LastAngle, global_placement)
def getArcMid(self, obj, global_placement=False): # Returns object midpoint
if utils.get_type(obj) == "Circle":
if obj.LastAngle > obj.FirstAngle:
midAngle = obj.FirstAngle + (obj.LastAngle - obj.FirstAngle) / 2.0
else:
midAngle = obj.FirstAngle + (obj.LastAngle - obj.FirstAngle) / 2.0
midAngle += App.Units.Quantity(180, App.Units.Angle)
return self.pointOnCircle(obj, midAngle, global_placement)
def pointOnCircle(self, obj, angle, global_placement=False):
if utils.get_type(obj) == "Circle":
px = obj.Radius * math.cos(math.radians(angle))
py = obj.Radius * math.sin(math.radians(angle))
p = App.Vector(px, py, 0.0)
if global_placement:
p = obj.getGlobalPlacement().multVec(p)
return p
return None
def arcInvert(self, obj):
obj.FirstAngle, obj.LastAngle = obj.LastAngle, obj.FirstAngle
obj.recompute()
class DraftEllipseGuiTools(GuiTools):
def __init__(self):
pass
def get_edit_points(self, obj):
editpoints = []
editpoints.append(App.Vector(0, 0, 0))
editpoints.append(App.Vector(obj.MajorRadius, 0, 0))
editpoints.append(App.Vector(0, obj.MinorRadius, 0))
return editpoints
def update_object_from_edit_points(self, obj, node_idx, v, alt_edit_mode=0):
if node_idx == 0:
obj.Placement.Base = obj.Placement.multVec(v)
elif node_idx == 1:
if v.Length >= obj.MinorRadius:
obj.MajorRadius = v.Length
else:
obj.MajorRadius = obj.MinorRadius
elif node_idx == 2:
if v.Length <= obj.MajorRadius:
obj.MinorRadius = v.Length
else:
obj.MinorRadius = obj.MajorRadius
class DraftPolygonGuiTools(GuiTools):
def __init__(self):
pass
def get_edit_points(self, obj):
editpoints = []
editpoints.append(App.Vector(0, 0, 0))
if obj.DrawMode == "inscribed":
editpoints.append(obj.Placement.inverse().multVec(obj.Shape.Vertexes[0].Point))
else:
editpoints.append(
obj.Placement.inverse().multVec(
(obj.Shape.Vertexes[0].Point + obj.Shape.Vertexes[1].Point) / 2
)
)
return editpoints
def update_object_from_edit_points(self, obj, node_idx, v, alt_edit_mode=0):
if node_idx == 0:
obj.Placement.Base = obj.Placement.multVec(v)
elif node_idx == 1:
obj.Radius = v.Length
obj.recompute()
class DraftDimensionGuiTools(GuiTools):
def __init__(self):
pass
def get_edit_points(self, obj):
editpoints = []
p = obj.ViewObject.Proxy.textpos.translation.getValue()
editpoints.append(obj.Start)
editpoints.append(obj.End)
editpoints.append(obj.Dimline)
editpoints.append(App.Vector(p[0], p[1], p[2]))
return editpoints
def update_object_from_edit_points(self, obj, node_idx, v, alt_edit_mode=0):
if node_idx == 0:
obj.Start = v
elif node_idx == 1:
obj.End = v
elif node_idx == 2:
obj.Dimline = v
elif node_idx == 3:
obj.ViewObject.TextPosition = v
class DraftLabelGuiTools(GuiTools):
def __init__(self):
pass
def get_edit_points(self, obj):
editpoints = []
if obj.StraightDirection != "Custom":
editpoints.append(obj.Points[0])
editpoints.append(obj.Points[1])
editpoints.append(obj.Points[2])
if editpoints[0].isEqual(editpoints[1], 0.001):
# If StraightDistance == 0.0, editpoint 1 is exactly on editpoint 0 => Move slightly editpoint 1 to allow selection of editpoint 0
editpoints[1] = 0.9 * editpoints[1] + 0.1 * editpoints[2]
else:
pass # TODO : support custom direction with any number of points
return editpoints
def update_object_from_edit_points(self, obj, node_idx, v, alt_edit_mode=0):
if obj.StraightDirection != "Custom":
if node_idx == 0:
vector_p1_p2 = obj.Placement.inverse().multVec(
obj.Points[1]
) - obj.Placement.inverse().multVec(v)
if obj.StraightDirection == "Horizontal":
if round(vector_p1_p2.y, utils.precision()) == 0.0:
obj.StraightDistance = vector_p1_p2.x
elif obj.StraightDirection == "Vertical":
if round(vector_p1_p2.x, utils.precision()) == 0.0:
obj.StraightDistance = vector_p1_p2.y
obj.Placement.Base = v
elif node_idx == 1:
vector_p1_p2 = obj.Placement.inverse().multVec(v) - obj.Placement.inverse().multVec(
obj.Placement.Base
)
if obj.StraightDirection == "Horizontal":
if round(vector_p1_p2.y, utils.precision()) == 0.0:
obj.StraightDistance = vector_p1_p2.x
else:
obj.Placement.Base = obj.Placement.Base + (v - obj.Points[1])
elif obj.StraightDirection == "Vertical":
if round(vector_p1_p2.x, utils.precision()) == 0.0:
obj.StraightDistance = vector_p1_p2.y
else:
obj.Placement.Base = obj.Placement.Base + (v - obj.Points[1])
elif node_idx == 2:
obj.TargetPoint = v
else:
pass # TODO : support custom direction with any number of points
class DraftBezCurveGuiTools(GuiTools):
def __init__(self):
pass
def get_edit_points(self, obj):
editpoints = []
for p in obj.Points:
editpoints.append(p)
return editpoints
def update_object_from_edit_points(self, obj, node_idx, v, alt_edit_mode=0):
pts = obj.Points
# DNC: check for coincident startpoint/endpoint to auto close the curve
tol = 0.001
if (
((node_idx == 0) and ((v - pts[-1]).Length < tol))
or (node_idx == len(pts) - 1)
and ((v - pts[0]).Length < tol)
):
obj.Closed = True
# DNC: checks if point enter is equal to other, this could cause a OCC problem
if v in pts:
_err = translate("draft", "This object does not support possible " "coincident points")
App.Console.PrintMessage(_err + "\n")
return
pts = self.recomputePointsBezier(obj, pts, node_idx, v, obj.Degree, moveTrackers=False)
if obj.Closed:
# check that the new point lies on the plane of the wire
if hasattr(obj.Shape, "normalAt"):
normal = obj.Shape.normalAt(0, 0)
point_on_plane = obj.Shape.Vertexes[0].Point
v.projectToPlane(point_on_plane, normal)
pts[node_idx] = v
obj.Points = pts
def get_edit_point_context_menu(self, edit_command, obj, node_idx):
return [
(translate("draft", "Delete Point"), lambda: self.delete_point(obj, node_idx)),
(translate("draft", "Make Sharp"), lambda: self.smoothBezPoint(obj, node_idx, "Sharp")),
(
translate("draft", "Make Tangent"),
lambda: self.smoothBezPoint(obj, node_idx, "Tangent"),
),
(
translate("draft", "Make Symmetric"),
lambda: self.smoothBezPoint(obj, node_idx, "Symmetric"),
),
]
def get_edit_obj_context_menu(self, edit_command, obj, position):
return [
(translate("draft", "Add Point"), lambda: self.add_point(edit_command, obj, position)),
(self.get_open_close_menu_text(obj), lambda: self.open_close_wire(obj)),
(translate("draft", "Reverse Curve"), lambda: self.reverse_wire(obj)),
]
def get_open_close_menu_text(self, obj):
if obj.Closed:
return translate("draft", "Open Curve")
else:
return translate("draft", "Close Curve")
def init_preview_object(self, obj):
return trackers.bezcurveTracker()
def update_preview_object(self, edit_command, obj, node_idx, v):
plist = edit_command.globalize_vectors(obj, obj.Points)
pointList = self.recomputePointsBezier(
obj, plist, node_idx, v, obj.Degree, moveTrackers=False
)
edit_command.ghost.update(pointList, obj.Degree)
def recomputePointsBezier(self, obj, pts, idx, v, degree, moveTrackers=False):
"""
(object, Points as list, nodeIndex as Int, App.Vector of new point, moveTrackers as Bool)
return the new point list, applying the App.Vector to the given index point
"""
# DNC: allows one to close the curve by placing ends close to each other
tol = 0.001
if (
((idx == 0) and ((v - pts[-1]).Length < tol))
or (idx == len(pts) - 1)
and ((v - pts[0]).Length < tol)
):
obj.Closed = True
# DNC: fix error message if edited point coincides with one of the existing points
# if ( v in pts ) == False:
knot = None
ispole = idx % degree
if ispole == 0: # knot
if degree >= 3:
if idx >= 1: # move left pole
knotidx = idx if idx < len(pts) else 0
pts[idx - 1] = pts[idx - 1] + v - pts[knotidx]
# if moveTrackers: # trackers are reset after editing
# self.trackers[obj.Name][idx-1].set(pts[idx-1])
if idx < len(pts) - 1: # move right pole
pts[idx + 1] = pts[idx + 1] + v - pts[idx]
# if moveTrackers:
# self.trackers[obj.Name][idx+1].set(pts[idx+1])
if idx == 0 and obj.Closed: # move last pole
pts[-1] = pts[-1] + v - pts[idx]
# if moveTrackers:
# self.trackers[obj.Name][-1].set(pts[-1])
elif ispole == 1 and (idx >= 2 or obj.Closed): # right pole
knot = idx - 1
changep = idx - 2 # -1 in case of closed curve
elif ispole == degree - 1 and idx <= len(pts) - 3: # left pole
knot = idx + 1
changep = idx + 2
elif ispole == degree - 1 and obj.Closed and idx == len(pts) - 1: # last pole
knot = 0
changep = 1
if knot is not None: # we need to modify the opposite pole
segment = int(knot / degree) - 1
cont = obj.Continuity[segment] if len(obj.Continuity) > segment else 0
if cont == 1: # tangent
pts[changep] = obj.Proxy.modifytangentpole(pts[knot], v, pts[changep])
# if moveTrackers:
# self.trackers[obj.Name][changep].set(pts[changep])
elif cont == 2: # symmetric
pts[changep] = obj.Proxy.modifysymmetricpole(pts[knot], v)
# if moveTrackers:
# self.trackers[obj.Name][changep].set(pts[changep])
pts[idx] = v
return pts # returns the list of new points, taking into account knot continuity
def smoothBezPoint(self, obj, point, style="Symmetric"):
"""called when changing the continuity of a knot"""
style2cont = {"Sharp": 0, "Tangent": 1, "Symmetric": 2}
if point is None:
return
if not (utils.get_type(obj) == "BezCurve"):
return
pts = obj.Points
deg = obj.Degree
if deg < 2:
return
if point % deg != 0: # point is a pole
if deg >= 3: # allow one to select poles
if (point % deg == 1) and (point > 2 or obj.Closed): # right pole
knot = point - 1
keepp = point
changep = point - 2
elif point < len(pts) - 3 and point % deg == deg - 1: # left pole
knot = point + 1
keepp = point
changep = point + 2
elif point == len(pts) - 1 and obj.Closed: # last pole
# if the curve is closed the last pole has the last
# index in the points lists
knot = 0
keepp = point
changep = 1
else:
App.Console.PrintWarning(
translate("draft", "Cannot change knot belonging to pole %d" % point) + "\n"
)
return
if knot:
if style == "Tangent":
pts[changep] = obj.Proxy.modifytangentpole(
pts[knot], pts[keepp], pts[changep]
)
elif style == "Symmetric":
pts[changep] = obj.Proxy.modifysymmetricpole(pts[knot], pts[keepp])
else: # sharp
pass #
else:
App.Console.PrintWarning(translate("draft", "Selection is not a knot") + "\n")
return
else: # point is a knot
if style == "Sharp":
if obj.Closed and point == len(pts) - 1:
knot = 0
else:
knot = point
elif style == "Tangent" and point > 0 and point < len(pts) - 1:
prev, next = obj.Proxy.tangentpoles(pts[point], pts[point - 1], pts[point + 1])
pts[point - 1] = prev
pts[point + 1] = next
knot = point # index for continuity
elif style == "Symmetric" and point > 0 and point < len(pts) - 1:
prev, next = obj.Proxy.symmetricpoles(pts[point], pts[point - 1], pts[point + 1])
pts[point - 1] = prev
pts[point + 1] = next
knot = point # index for continuity
elif obj.Closed and (style == "Symmetric" or style == "Tangent"):
if style == "Tangent":
pts[1], pts[-1] = obj.Proxy.tangentpoles(pts[0], pts[1], pts[-1])
elif style == "Symmetric":
pts[1], pts[-1] = obj.Proxy.symmetricpoles(pts[0], pts[1], pts[-1])
knot = 0
else:
App.Console.PrintWarning(
translate("draft", "Endpoint of Bézier curve cannot be smoothed") + "\n"
)
return
segment = knot // deg # segment index
newcont = obj.Continuity[:] # don't edit a property inplace !!!
if not obj.Closed and (len(obj.Continuity) == segment - 1 or segment == 0):
pass # open curve
elif (
len(obj.Continuity) >= segment
or obj.Closed
and segment == 0
and len(obj.Continuity) > 1
):
newcont[segment - 1] = style2cont.get(style)
else: # should not happen
App.Console.PrintWarning(
"Continuity indexing error:"
+ "point:%d deg:%d len(cont):%d" % (knot, deg, len(obj.Continuity))
)
obj.Points = pts
obj.Continuity = newcont
def add_point(self, edit_command, obj, pos):
"""Add point to obj and reset trackers."""
info, pt = edit_command.get_specific_object_info(obj, pos)
if not info or (pt is None):
return
import Part
pts = obj.Points
if not info["Component"].startswith("Edge"):
return # clicked control point
edgeindex = int(info["Component"].lstrip("Edge")) - 1
wire = obj.Shape.Wires[0]
bz = wire.Edges[edgeindex].Curve
param = bz.parameter(pt)
seg1 = wire.Edges[edgeindex].copy().Curve
seg2 = wire.Edges[edgeindex].copy().Curve
seg1.segment(seg1.FirstParameter, param)
seg2.segment(param, seg2.LastParameter)
if edgeindex == len(wire.Edges):
# we hit the last segment, we need to fix the degree
degree = wire.Edges[0].Curve.Degree
seg1.increase(degree)
seg2.increase(degree)
edges = (
wire.Edges[0:edgeindex]
+ [Part.Edge(seg1), Part.Edge(seg2)]
+ wire.Edges[edgeindex + 1 :]
)
pts = edges[0].Curve.getPoles()[0:1]
for edge in edges:
pts.extend(edge.Curve.getPoles()[1:])
if obj.Closed:
pts.pop()
c = obj.Continuity
# assume we have a tangent continuity for an arbitrarily split
# segment, unless it's linear
cont = 1 if (obj.Degree >= 2) else 0
obj.Continuity = c[0:edgeindex] + [cont] + c[edgeindex:]
obj.Points = pts
obj.recompute()
def delete_point(self, obj, node_idx):
if len(obj.Points) <= 2:
_err(translate("draft", "Active object must have more than two points/nodes"))
return
pts = obj.Points
pts.pop(node_idx)
obj.Points = pts
obj.Proxy.resetcontinuity(obj)
obj.recompute()
def open_close_wire(self, obj):
obj.Closed = not obj.Closed
obj.recompute()
def reverse_wire(self, obj):
obj.Points = reversed(obj.Points)
obj.recompute()
## @}
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