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Arch: added IFC export preference option to choose triangulation style for non-planar shapes

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This commit is contained in:
Yorik van Havre
2015-10-28 17:24:43 -02:00
parent fc8e2eed64
commit e7d16c5f62
2 changed files with 38 additions and 14 deletions
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20
src/Mod/Arch/Resources/ui/preferences-ifc.ui
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@@ -314,6 +314,26 @@
</item>
</layout>
</item>
<item>
<layout class="QHBoxLayout" name="horizontalLayout_8">
<item>
<widget class="Gui::PrefCheckBox" name="checkBox_4">
<property name="toolTip">
<string>Curved shapes that cannot be represented as curves in IFC are decomposed into flat facets. If this is checked, simple triangulation will be used, otherwise some additional calculation is done to join coplanar facets.</string>
</property>
<property name="text">
<string>Use classic triangulation</string>
</property>
<property name="prefEntry" stdset="0">
<cstring>ifcClassicTriangulation</cstring>
</property>
<property name="prefPath" stdset="0">
<cstring>Mod/Arch</cstring>
</property>
</widget>
</item>
</layout>
</item>
</layout>
</widget>
</item>

32
src/Mod/Arch/importIFC.py
View File

@@ -1175,6 +1175,7 @@ def getRepresentation(ifcfile,context,obj,forcebrep=False,subtraction=False,tess
fcsolid.scale(0.001) # to meters
faces = []
curves = False
shapetype = "brep"
for fcface in fcsolid.Faces:
for e in fcface.Edges:
if not isinstance(e.Curve,Part.Line):
@@ -1182,17 +1183,19 @@ def getRepresentation(ifcfile,context,obj,forcebrep=False,subtraction=False,tess
curves = True
break
if curves:
#shapetype = "triangulated"
#tris = fcsolid.tessellate(tessellation)
#for tri in tris[1]:
# pts = [ifcfile.createIfcCartesianPoint(tuple(tris[0][i])) for i in tri]
# loop = ifcfile.createIfcPolyLoop(pts)
# bound = ifcfile.createIfcFaceOuterBound(loop,True)
# face = ifcfile.createIfcFace([bound])
# faces.append(face)
fcsolid = Arch.removeCurves(fcsolid)
shapetype = "brep"
if FreeCAD.ParamGet("User parameter:BaseApp/Preferences/Mod/Arch").GetBool("ifcClassicTriangulation",False):
shapetype = "triangulated"
tris = fcsolid.tessellate(tessellation)
for tri in tris[1]:
pts = [ifcfile.createIfcCartesianPoint(tuple(tris[0][i])) for i in tri]
loop = ifcfile.createIfcPolyLoop(pts)
bound = ifcfile.createIfcFaceOuterBound(loop,True)
face = ifcfile.createIfcFace([bound])
faces.append(face)
fcsolid = Part.Shape() # empty shape so below code is not executed
else:
fcsolid = Arch.removeCurves(fcsolid)
for fcface in fcsolid.Faces:
loops = []
verts = [v.Point for v in Part.Wire(Part.__sortEdges__(fcface.OuterWire.Edges)).Vertexes]
@@ -1220,9 +1223,10 @@ def getRepresentation(ifcfile,context,obj,forcebrep=False,subtraction=False,tess
face = ifcfile.createIfcFace(loops)
faces.append(face)
shell = ifcfile.createIfcClosedShell(faces)
shape = ifcfile.createIfcFacetedBrep(shell)
shapes.append(shape)
if faces:
shell = ifcfile.createIfcClosedShell(faces)
shape = ifcfile.createIfcFacetedBrep(shell)
shapes.append(shape)
if shapes: