The cross section curve of Prismatic shape is either self intersecting or not a planar. Prismatic Shape graphics cannot be computed. Make sure that the Cross Section Curve is planar and non self intersecting. - Intergraph Smart 3D - Troubleshooting - Hexagon

Intergraph Smart 3D Troubleshooting Reference

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English
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Intergraph Smart 3D
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Troubleshooting
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Troubleshooting
Smart 3D Version
13.1

Meaning: The cross-section curve of the prismatic shape either intersects with the shape, or the curve is not planar. Because of this, Smart 3D cannot generate the shape.

Recovery: Edit the cross-section curve so that it does not intersect with the shape, and verify that the curve is planar.