Code:
<ModelVisual3D.Content>
<Model3DGroup x:Name="Gleba">
<Model3DGroup.Transform>
<ScaleTransform3D ScaleX="1" ScaleY="1" ScaleZ="0.08" CenterX="0" CenterY="0" CenterZ="0" />
</Model3DGroup.Transform>
<GeometryModel3D x:Name="Binary_STL_output_from_Blender__">
<GeometryModel3D.Geometry>
<MeshGeometry3D Positions="0.536354,0.89785,0.0293576 0.536354,-0.89785,0.0293576 -0.536354,-0.897849,0.0293576 -0.536354,0.89785,0.0293576 0.536354,0.897849,-0.0293576 -0.536354,0.89785,-0.0293576 -0.536354,-0.897849,-0.0293576 0.536354,-0.89785,-0.0293576 0.536354,0.89785,0.0293576 0.536354,0.897849,-0.0293576 0.536354,-0.89785,-0.0293576 0.536354,-0.89785,0.0293576 0.536354,-0.89785,0.0293576 0.536354,-0.89785,-0.0293576 -0.536354,-0.897849,-0.0293576 -0.536354,-0.897849,0.0293576 -0.536354,-0.897849,0.0293576 -0.536354,-0.897849,-0.0293576 -0.536354,0.89785,-0.0293576 -0.536354,0.89785,0.0293576 0.536354,0.897849,-0.0293576 0.536354,0.89785,0.0293576 -0.536354,0.89785,0.0293576 -0.536354,0.89785,-0.0293576" TriangleIndices="0,1,2 0,2,3 4,5,6 4,6,7 8,9,10 8,10,11 12,13,14 12,14,15 16,17,18 16,18,19 20,21,22 20,22,23" Normals="0,0,-1 0,0,-1 0,0,-1 0,0,-1 0,0,1 0,0,1 0,0,1 0,0,1 -1,1.65965e-007,1.01515e-006 -1,3.3193e-007,-4.0606e-006 -1,1.65965e-007,1.01515e-006 -1,0,6.0909e-006 4.723e-007,1,-3.55303e-006 7.77905e-007,1,-9.13636e-006 4.723e-007,1,-3.55303e-006 1.66694e-007,1,2.0303e-006 1,-1.32772e-007,-2.0303e-006 1,-1.32772e-007,-2.0303e-006 1,-1.32772e-007,-2.0303e-006 1,-1.32772e-007,-2.0303e-006 -3.88952e-007,-1,6.0909e-006 -3.33388e-007,-1,7.10605e-006 -3.88952e-007,-1,6.0909e-006 -4.44517e-007,-1,5.07575e-006" TextureCoordinates="" />
</GeometryModel3D.Geometry>
<GeometryModel3D.Material>
<MaterialGroup>
<DiffuseMaterial>
<DiffuseMaterial.Brush>
<ImageBrush ImageSource="C:\Users\Grzybu\Desktop\WPF 3D Kulki MOJE\WpfBalls\bin\Debug\gleba.png"
Stretch="Fill" TileMode="None" ViewportUnits="Absolute" Viewport="0 0 1 1"
AlignmentX="Left" AlignmentY="Top" Opacity="1.000000"/>
</DiffuseMaterial.Brush>
</DiffuseMaterial>
<DiffuseMaterial>
<DiffuseMaterial.Brush>
<SolidColorBrush Color="LightGray" Opacity=".2"></SolidColorBrush>
</DiffuseMaterial.Brush>
</DiffuseMaterial>
</MaterialGroup>
</GeometryModel3D.Material>
</GeometryModel3D>
</Model3DGroup>
</ModelVisual3D.Content>