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I have a ifc file with with some walls & furniture.

When i am using the IfcSurfaceStyleRendering or IfcSurfaceStyleShading I makes all my walls transparent like this.

enter image description here

All the walls are IIfcWall & I have also tried IIfcStyeItem from IIfcWall.Representation but it is making transparent all the walls at same time.

Whereas I just need a single wall to remain visible like this

enter image description here

Priya
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Reza Nourbakhsh
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    please don't include images as hypelinks. – shizhen Aug 13 '18 at 03:46
  • What are you setting the transparency value to? Are you assigning the same IfcStyledItem to all walls? – Loebl Aug 20 '18 at 06:35
  • its ifc exported from **Revit2018** with **IFC4 Refrence View** setup.it looks like all the walls using same 'ifcStyledItem' @Loebl – Reza Nourbakhsh Aug 20 '18 at 06:57
  • Well you need separate styles for separate looks. Also you workflow is a bit inclear to me: Are you editing the file in Revit, or are you modifiying the file with xBIM in C#? In the latter case could you post the code you tried to change the style of the wall? – Loebl Aug 20 '18 at 11:18

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so the reason why all the walls for ifc file became transparent is that all the walls uses the IfcStyleItem.in order to make a single wall transparent u just need to create and assign a new style item to that wall.

Reza Nourbakhsh
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