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BoundBox: support for flat and linear degenerate cases

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Bounding box of a sketch on a standard plane is a planar face.
This commit is contained in:
DeepSOIC 2015-10-17 16:22:17 +03:00
parent 164057a827
commit 642d5634e3
1 changed files with 29 additions and 2 deletions
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31
latticeBoundBox.py
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@ -10,7 +10,26 @@ __url__ = ""
# -------------------------- common stuff --------------------------------------------------
def boundBox2RealBox(bb):
return Part.makeBox(bb.XLength,bb.YLength,bb.ZLength,FreeCAD.Vector(bb.XMin, bb.YMin, bb.ZMin),FreeCAD.Vector(0,0,1))
base = FreeCAD.Vector(bb.XMin, bb.YMin, bb.ZMin)
OX = FreeCAD.Vector(1, 0, 0)
OY = FreeCAD.Vector(0, 1, 0)
OZ = FreeCAD.Vector(0, 0, 1)
if bb.XLength > DistConfusion and bb.YLength > DistConfusion and bb.ZLength > DistConfusion :
return Part.makeBox(bb.XLength,bb.YLength,bb.ZLength, base, OZ)
elif bb.XLength > DistConfusion and bb.YLength > DistConfusion:
return Part.makePlane(bb.XLength, bb.YLength, base, OZ, OX)
elif bb.XLength > DistConfusion and bb.ZLength > DistConfusion :
return Part.makePlane(bb.XLength, bb.ZLength, base, OY*-1, OX)
elif bb.YLength > DistConfusion and bb.ZLength > DistConfusion :
return Part.makePlane(bb.YLength, bb.ZLength, base, OX, OY)
elif bb.XLength > DistConfusion:
return Part.makeLine(base, base + OX*bb.XLength)
elif bb.YLength > DistConfusion:
return Part.makeLine(base, base + OY*bb.YLength)
elif bb.ZLength > DistConfusion:
return Part.makeLine(base, base + OZ*bb.ZLength)
else:
raise ValueError("Bounding box is zero")
def getPrecisionBoundBox(shape):
# First, get imprecise bound box. Since the imprecise one
@ -18,7 +37,15 @@ def getPrecisionBoundBox(shape):
# it to ensure it does not touch the shape.
bb = shape.BoundBox
bb.enlarge(2)
if bb.XLength < DistConfusion:
bb.XMin = bb.XMin - 1.0
bb.XMax = bb.XMax + 1.0
if bb.YLength < DistConfusion:
bb.YMin = bb.YMin - 1.0
bb.YMax = bb.YMax + 1.0
if bb.ZLength < DistConfusion:
bb.ZMin = bb.ZMin - 1.0
bb.ZMax = bb.ZMax + 1.0
# Make a boundingbox shape and compute distances from faces
# of this enlarged bounding box to the actual shape. Shrink
# the boundbox by the distances.