Netherlands
Joined: Apr 8, 2022
Post Count: 788
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Re: Windows not see through?
With models exported from external sources you always have to wait and see how they turn out. Sometimes they are completely garbled and sometimes they are perfect. Sometimes it helps to first import them in Blender and export to the Wavefront format obj/mtl. Then import in Sweethome3D.
The window you imported can probably be fixed to make the glass transparent, IF the glass has its own material definition. First determine what the name of the glass property is: Double click the window to modify its properties. In the section 'color and texture' choose 'modify'. Try each listed property name and see what the name of the property is when the glass is blinking. That is the property name for the glass. Now how to fix it:
If you imported an obj/mtl model you already have the needed mtl file. If not export the window from Sweethome3D which will generate the obj and mtl files for you. Edit the mtl file with a plain text editor and find the section with the material name for the glass. That section probably doesn't have a line starting with 'd ' so add a line with 'd 0.4'. If there is no line with a 'Ni' value add that too: 'Ni 1.45' (both without the quotes). Ni is for the refraction of the glass which for normal window glass is around 1.45, d is the transparency where 0.0 is completely transparent to fully opaque at 1.0. For single glass 0.4 is a good value.
Save the mtl file and re-import the obj file as 'door or window' and you should have a window with transparent glass. When you are editing you can change the property name for the glass to "Glass" but you must do the same name change in the obj file.
