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How to change texture/draw on certain areas of an imported obejct with Helixtool?

9 years ago • updated by 9 years ago • 1

I would like to only change material in certain parts of my imported object. I want to simulate brain activity. I am using an imported .obj and I would like to draw/change texture of the object only on the right side. Is that possible within Helixtoolkit?

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Yes, its possible.

If you work with a complex material, you need to create a MaterialGroup and Add all materials that will make your final material.

To apply the material in your model, you need to do this (Vb.net)

TryCast(mObj.Content, GeometryModel3D).Material = MaterialGroup

TryCast(mObj.Content, GeometryModel3D).BackMaterial = MaterialGroup

If you don't need back, just does not use them.

Example Basic Material with Image:

Dim b As New ImageBrush(TryCast(myImage, BitmapImage))

b.TileMode = 1

b.Viewport = New Rect(0, 0, b.TileMode, b.TileMode)

b.Opacity = 1

vMat = New DiffuseMaterial(b)

TryCast(vMat, DiffuseMaterial).Color = Colors.White

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