def updateData(self, obj, prop):
"""Execute when a property from the Proxy class is changed."""
if not hasattr(self, "arc"):
return
arcsegs = 24
vobj = obj.ViewObject
# Determine the orientation of the text by using a normal direction.
# Also calculate the arc data.
if DraftVecUtils.isNull(obj.Normal):
norm = App.Vector(0, 0, 1)
else:
norm = obj.Normal
radius = (obj.Dimline - obj.Center).Length
self.circle = Part.makeCircle(radius, obj.Center, norm,
obj.FirstAngle.Value,
obj.LastAngle.Value)
self.p2 = self.circle.Vertexes[0].Point
self.p3 = self.circle.Vertexes[-1].Point
midp = DraftGeomUtils.findMidpoint(self.circle.Edges[0])
ray = midp - obj.Center
# Set text value
if obj.LastAngle.Value > obj.FirstAngle.Value:
angle = obj.LastAngle.Value - obj.FirstAngle.Value
else:
angle = (360 - obj.FirstAngle.Value) + obj.LastAngle.Value
show_unit = True
if hasattr(vobj, "ShowUnit"):
show_unit = vobj.ShowUnit
if hasattr(vobj, "Decimals"):
self.string = units.display_external(angle, vobj.Decimals, 'Angle',
show_unit)
else:
self.string = units.display_external(angle, None, 'Angle',
show_unit)
if vobj.Override:
self.string = vobj.Override.replace("$dim", self.string)
self.text.string = utils.string_encode_coin(self.string)
self.text3d.string = utils.string_encode_coin(self.string)
# On first run the `DisplayMode` enumeration is not set, so we trap
# the exception and set the display mode using the value
# in the parameter database
try:
m = vobj.DisplayMode
except AssertionError:
m = ["2D", "3D"][utils.get_param("dimstyle", 0)]
# Set the arc
first = self.circle.FirstParameter
last = self.circle.LastParameter
if m == "3D":
# Calculate the spacing of the text
spacing = len(self.string) * vobj.FontSize.Value / 8.0
pts1 = []
cut = None
pts2 = []
for i in range(arcsegs + 1):
p = self.circle.valueAt(first + (last - first) / arcsegs * i)
if (p - midp).Length <= spacing:
if cut is None:
cut = i
else:
if cut is None:
pts1.append([p.x, p.y, p.z])
else:
pts2.append([p.x, p.y, p.z])
self.coords.point.setValues(pts1 + pts2)
pts1_num = len(pts1)
pts2_num = len(pts2)
i1 = pts1_num
i2 = i1 + pts2_num
self.arc.coordIndex.setValues(
0, pts1_num + pts2_num + 1,
list(range(pts1_num)) + [-1] + list(range(i1, i2)))
if pts1_num >= 3 and pts2_num >= 3:
self.circle1 = Part.Arc(
App.Vector(pts1[0][0], pts1[0][1], pts1[0][2]),
App.Vector(pts1[1][0], pts1[1][1], pts1[1][2]),
App.Vector(pts1[-1][0], pts1[-1][1],
pts1[-1][2])).toShape()
self.circle2 = Part.Arc(
App.Vector(pts2[0][0], pts2[0][1], pts2[0][2]),
App.Vector(pts2[1][0], pts2[1][1], pts2[1][2]),
App.Vector(pts2[-1][0], pts2[-1][1],
pts2[-1][2])).toShape()
else:
pts = []
for i in range(arcsegs + 1):
p = self.circle.valueAt(first + (last - first) / arcsegs * i)
pts.append([p.x, p.y, p.z])
self.coords.point.setValues(pts)
self.arc.coordIndex.setValues(0, arcsegs + 1,
list(range(arcsegs + 1)))
# Set the arrow coords and rotation
p2 = (self.p2.x, self.p2.y, self.p2.z)
p3 = (self.p3.x, self.p3.y, self.p3.z)
self.trans1.translation.setValue(p2)
self.coord1.point.setValue(p2)
self.trans2.translation.setValue(p3)
self.coord2.point.setValue(p3)
# Calculate small chords to make arrows look better
arrowlength = 4 * vobj.ArrowSize.Value
u1 = (self.circle.valueAt(first + arrowlength) -
self.circle.valueAt(first)).normalize()
u2 = (self.circle.valueAt(last) -
self.circle.valueAt(last - arrowlength)).normalize()
if hasattr(vobj, "FlipArrows") and vobj.FlipArrows:
u1 = u1.negative()
u2 = u2.negative()
w2 = self.circle.Curve.Axis
w1 = w2.negative()
v1 = w1.cross(u1)
v2 = w2.cross(u2)
_plane_rot_1 = DraftVecUtils.getPlaneRotation(u1, v1, w1)
_plane_rot_2 = DraftVecUtils.getPlaneRotation(u2, v2, w2)
q1 = App.Placement(_plane_rot_1).Rotation.Q
q2 = App.Placement(_plane_rot_2).Rotation.Q
self.trans1.rotation.setValue((q1[0], q1[1], q1[2], q1[3]))
self.trans2.rotation.setValue((q2[0], q2[1], q2[2], q2[3]))
# Set text position and rotation
self.tbase = midp
if (hasattr(vobj, "TextPosition")
and not DraftVecUtils.isNull(vobj.TextPosition)):
self.tbase = vobj.TextPosition
u3 = ray.cross(norm).normalize()
v3 = norm.cross(u3)
_plane_rot_3 = DraftVecUtils.getPlaneRotation(u3, v3, norm)
r = App.Placement(_plane_rot_3).Rotation
offset = r.multVec(App.Vector(0, 1, 0))
if hasattr(vobj, "TextSpacing"):
offset = DraftVecUtils.scaleTo(offset, vobj.TextSpacing.Value)
else:
offset = DraftVecUtils.scaleTo(offset, 0.05)
if m == "3D":
offset = offset.negative()
self.tbase = self.tbase.add(offset)
q = r.Q
self.textpos.translation.setValue(
[self.tbase.x, self.tbase.y, self.tbase.z])
self.textpos.rotation = coin.SbRotation(q[0], q[1], q[2], q[3])
# Set the angle property
_round_1 = round(obj.Angle, utils.precision())
_round_2 = round(angle, utils.precision())
if _round_1 != _round_2:
obj.Angle = angle
def updateData(self, obj, prop):
"""Execute when a property from the Proxy class is changed.
It only runs if `Start`, `End`, `Dimline`, or `Direction` changed.
"""
if prop not in ("Start", "End", "Dimline", "Direction"):
return
if obj.Start == obj.End:
return
if not hasattr(self, "node"):
return
vobj = obj.ViewObject
# Calculate the 4 points
#
# | d |
# ---p2-------------c----p3---- c
# | |
# | |
# p1 p4
#
# - `c` is the `Dimline`, a point that lies on the dimension line
# or on its extension.
# - The line itself between `p2` to `p3` is the `base`.
# - The distance between `p2` (`base`) to `p1` is `proj`, an extension
# line from the dimension to the measured object.
# - If the `proj` distance is zero, `p1` and `p2` are the same point,
# and same with `p3` and `p4`.
#
self.p1 = obj.Start
self.p4 = obj.End
base = None
if (hasattr(obj, "Direction")
and not DraftVecUtils.isNull(obj.Direction)):
v2 = self.p1 - obj.Dimline
v3 = self.p4 - obj.Dimline
v2 = DraftVecUtils.project(v2, obj.Direction)
v3 = DraftVecUtils.project(v3, obj.Direction)
self.p2 = obj.Dimline + v2
self.p3 = obj.Dimline + v3
if DraftVecUtils.equals(self.p2, self.p3):
base = None
proj = None
else:
base = Part.LineSegment(self.p2, self.p3).toShape()
proj = DraftGeomUtils.findDistance(self.p1, base)
if proj:
proj = proj.negative()
if not base:
if DraftVecUtils.equals(self.p1, self.p4):
base = None
proj = None
else:
base = Part.LineSegment(self.p1, self.p4).toShape()
proj = DraftGeomUtils.findDistance(obj.Dimline, base)
if proj:
self.p2 = self.p1 + proj.negative()
self.p3 = self.p4 + proj.negative()
else:
self.p2 = self.p1
self.p3 = self.p4
if proj:
if hasattr(vobj, "ExtLines") and hasattr(vobj, "ScaleMultiplier"):
# The scale multiplier also affects the value
# of the extension line; this makes sure a maximum length
# is used if the calculated value is larger than it.
dmax = vobj.ExtLines.Value * vobj.ScaleMultiplier
if dmax and proj.Length > dmax:
if dmax > 0:
self.p1 = self.p2 + DraftVecUtils.scaleTo(proj, dmax)
self.p4 = self.p3 + DraftVecUtils.scaleTo(proj, dmax)
else:
rest = proj.Length + dmax
self.p1 = self.p2 + DraftVecUtils.scaleTo(proj, rest)
self.p4 = self.p3 + DraftVecUtils.scaleTo(proj, rest)
else:
proj = (self.p3 - self.p2).cross(App.Vector(0, 0, 1))
# Calculate the arrow positions
p2 = (self.p2.x, self.p2.y, self.p2.z)
p3 = (self.p3.x, self.p3.y, self.p3.z)
self.trans1.translation.setValue(p2)
self.coord1.point.setValue(p2)
self.trans2.translation.setValue(p3)
self.coord2.point.setValue(p3)
# Calculate dimension and extension lines overshoots positions
self.transDimOvershoot1.translation.setValue(p2)
self.transDimOvershoot2.translation.setValue(p3)
self.transExtOvershoot1.translation.setValue(p2)
self.transExtOvershoot2.translation.setValue(p3)
# Determine the orientation of the text by using a normal direction.
# By default the value of +Z will be used, or a calculated value
# from p2 and p3. So the text will lie on the XY plane
# or a plane coplanar with p2 and p3.
u = self.p3 - self.p2
u.normalize()
if proj:
_norm = u.cross(proj)
norm = _norm.negative()
else:
norm = App.Vector(0, 0, 1)
# If `Normal` exists and is different from the default `(0,0,0)`,
# it will be used.
if hasattr(obj, "Normal") and not DraftVecUtils.isNull(obj.Normal):
norm = App.Vector(obj.Normal)
if not DraftVecUtils.isNull(norm):
norm.normalize()
# Calculate the position of the arrows and extension lines
v1 = norm.cross(u)
_plane_rot = DraftVecUtils.getPlaneRotation(u, v1, norm)
rot1 = App.Placement(_plane_rot).Rotation.Q
self.transDimOvershoot1.rotation.setValue(
(rot1[0], rot1[1], rot1[2], rot1[3]))
self.transDimOvershoot2.rotation.setValue(
(rot1[0], rot1[1], rot1[2], rot1[3]))
if hasattr(vobj, "FlipArrows") and vobj.FlipArrows:
u = u.negative()
v2 = norm.cross(u)
_plane_rot = DraftVecUtils.getPlaneRotation(u, v2, norm)
rot2 = App.Placement(_plane_rot).Rotation.Q
self.trans1.rotation.setValue((rot2[0], rot2[1], rot2[2], rot2[3]))
self.trans2.rotation.setValue((rot2[0], rot2[1], rot2[2], rot2[3]))
if self.p1 != self.p2:
u3 = self.p1 - self.p2
u3.normalize()
v3 = norm.cross(u3)
_plane_rot = DraftVecUtils.getPlaneRotation(u3, v3, norm)
rot3 = App.Placement(_plane_rot).Rotation.Q
self.transExtOvershoot1.rotation.setValue(
(rot3[0], rot3[1], rot3[2], rot3[3]))
self.transExtOvershoot2.rotation.setValue(
(rot3[0], rot3[1], rot3[2], rot3[3]))
# Offset is the distance from the dimension line to the textual
# element that displays the value of the measurement
if hasattr(vobj, "TextSpacing") and hasattr(vobj, "ScaleMultiplier"):
ts = vobj.TextSpacing.Value * vobj.ScaleMultiplier
offset = DraftVecUtils.scaleTo(v1, ts)
else:
offset = DraftVecUtils.scaleTo(v1, 0.05)
rott = rot1
if hasattr(vobj, "FlipText") and vobj.FlipText:
_rott = App.Rotation(rott[0], rott[1], rott[2], rott[3])
rott = _rott.multiply(App.Rotation(norm, 180)).Q
offset = offset.negative()
# On first run the `DisplayMode` enumeration is not set, so we trap
# the exception and set the display mode using the value
# in the parameter database
try:
m = vobj.DisplayMode
except AssertionError:
m = ["2D", "3D"][utils.get_param("dimstyle", 0)]
if m == "3D":
offset = offset.negative()
# The position of the text element in the dimension is provided
# in absolute coordinates by the value of `TextPosition`,
# if it is different from the default `(0,0,0)`
if (hasattr(vobj, "TextPosition")
and not DraftVecUtils.isNull(vobj.TextPosition)):
self.tbase = vobj.TextPosition
else:
# Otherwise the position is calculated from the end points
# of the dimension line, and the offset that depends
# on `TextSpacing`
center = self.p2 + (self.p3 - self.p2).multiply(0.5)
self.tbase = center + offset
self.textpos.translation.setValue(
[self.tbase.x, self.tbase.y, self.tbase.z])
self.textpos.rotation = coin.SbRotation(rott[0], rott[1], rott[2],
rott[3])
show_unit = True
if hasattr(vobj, "ShowUnit"):
show_unit = vobj.ShowUnit
# Set text element showing the value of the dimension
length = (self.p3 - self.p2).Length
unit = None
if hasattr(vobj, "UnitOverride"):
unit = vobj.UnitOverride
# Special representation if we use 'Building US' scheme
u_params = App.ParamGet("User parameter:BaseApp/Preferences/Units")
if u_params.GetInt("UserSchema", 0) == 5:
s = App.Units.Quantity(length, App.Units.Length).UserString
self.string = s.replace("' ", "'- ") # feet
self.string = s.replace("+", " ")
elif hasattr(vobj, "Decimals"):
self.string = units.display_external(length, vobj.Decimals,
'Length', show_unit, unit)
else:
self.string = units.display_external(length, None, 'Length',
show_unit, unit)
if hasattr(vobj, "Override") and vobj.Override:
self.string = vobj.Override.replace("$dim", self.string)
self.text.string = utils.string_encode_coin(self.string)
self.text3d.string = utils.string_encode_coin(self.string)
# Set the lines
if m == "3D":
# Calculate the spacing of the text
textsize = len(self.string) * vobj.FontSize.Value / 4.0
spacing = (self.p3 - self.p2).Length / 2.0 - textsize
self.p2a = self.p2 + DraftVecUtils.scaleTo(self.p3 - self.p2,
spacing)
self.p2b = self.p3 + DraftVecUtils.scaleTo(self.p2 - self.p3,
spacing)
self.coords.point.setValues([[self.p1.x, self.p1.y, self.p1.z],
[self.p2.x, self.p2.y, self.p2.z],
[self.p2a.x, self.p2a.y, self.p2a.z],
[self.p2b.x, self.p2b.y, self.p2b.z],
[self.p3.x, self.p3.y, self.p3.z],
[self.p4.x, self.p4.y, self.p4.z]])
# self.line.numVertices.setValues([3, 3])
self.line.coordIndex.setValues(0, 7, (0, 1, 2, -1, 3, 4, 5))
else:
self.coords.point.setValues([[self.p1.x, self.p1.y, self.p1.z],
[self.p2.x, self.p2.y, self.p2.z],
[self.p3.x, self.p3.y, self.p3.z],
[self.p4.x, self.p4.y, self.p4.z]])
# self.line.numVertices.setValue(4)
self.line.coordIndex.setValues(0, 4, (0, 1, 2, 3))
