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BIM: Change from RGBT to RGBA for IFC

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Currently users by default have transparent window frames and doors.

Turns out that at some point there was a switch from RGBT to RGBA, which
means last transparency element differs in the range of transparency
that it specifies (RGBT, where 1 - fully visible, RGBA where 1 - fully
transparent). As the changed happened, all of the windows and door
became transparent.

This patch changes that, from RGBT to RGBA so we will map transparency
properly, as well as adding a possibility to set transparency through
material.
This commit is contained in:
tetektoza
2025-05-11 21:31:15 +02:00
parent 223234952a
commit 5e46843031
2 changed files with 9 additions and 8 deletions
Download Patch File Download Diff File Expand all files Collapse all files

1
src/Mod/BIM/importers/exportIFC.py
View File

@@ -2346,6 +2346,7 @@ def getRepresentation(
if hasattr(obj,"Material"):
if obj.Material:
m = obj.Material.Label
rgbt[i] = (rgbt[i][0], rgbt[i][1], rgbt[i][2], obj.Material.Transparency/100.0)
psa = ifcbin.createIfcPresentationStyleAssignment(m,rgbt[i][0],rgbt[i][1],rgbt[i][2],rgbt[i][3])
surfstyles[key] = psa
isi = ifcfile.createIfcStyledItem(shape,[psa],None)

16
src/Mod/BIM/importers/exportIFCHelper.py
View File

@@ -381,13 +381,13 @@ class recycler:
self.rgbs[key] = c
return c
def createIfcSurfaceStyleRendering(self,col,trans=0):
def createIfcSurfaceStyleRendering(self,col,trans=1):
key = (col.Red,col.Green,col.Blue,trans)
if self.compress and key in self.ssrenderings:
self.spared += 1
return self.ssrenderings[key]
else:
if trans == 0:
if trans == 1:
trans = None
c = self.ifcfile.createIfcSurfaceStyleRendering(col,trans,None,None,None,None,None,None,"FLAT")
if self.compress:
@@ -405,7 +405,7 @@ class recycler:
self.transformationoperators[key] = c
return c
def createIfcSurfaceStyle(self,name,r,g,b,t=0):
def createIfcSurfaceStyle(self,name,r,g,b,a=1):
if name:
key = name + str((r,g,b))
else:
@@ -415,22 +415,22 @@ class recycler:
return self.sstyles[key]
else:
col = self.createIfcColourRgb(r,g,b)
ssr = self.createIfcSurfaceStyleRendering(col,t)
ssr = self.createIfcSurfaceStyleRendering(col,a)
c = self.ifcfile.createIfcSurfaceStyle(name,"BOTH",[ssr])
if self.compress:
self.sstyles[key] = c
return c
def createIfcPresentationStyleAssignment(self,name,r,g,b,t=0,ifc4=False):
def createIfcPresentationStyleAssignment(self,name,r,g,b,a=1,ifc4=False):
if name:
key = name+str((r,g,b,t))
key = name+str((r,g,b,a))
else:
key = str((r,g,b,t))
key = str((r,g,b,a))
if self.compress and key in self.psas:
self.spared += 1
return self.psas[key]
else:
iss = self.createIfcSurfaceStyle(name,r,g,b,t)
iss = self.createIfcSurfaceStyle(name,r,g,b,a)
if ifc4:
c = iss
else: