B-Rep Model Viewer

Homework for BUAA 2023 Autumn Computer Aided Design And Manufacturing.

Copyright © Tony's Studio 2023

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Reference

1. https://www.codeproject.com/Articles/23332/WPF-3D-Primer
2. https://xoax.net/blog/rendering-transparent-3d-surfaces-in-wpf-with-c/
3. https://stackoverflow.com/questions/48924505/how-to-handle-diffuse-material-transparency-in-wpf-3d

Thanks very much! 😆

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Screenshot

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How to use?

Interaction

• Left click and drag to rotate the model
• Right click and drag to translate the model (This will cause the change of rotation center)
• Scroll the mouse wheel to zoom the model
• Click Reset View button to reset the view
• Click Change Color button to change the color of the model (Not for default model)
• Check Enable Muti-color to show each face of the model in different color (Not for default model)

Menu

• File | About: Show about information
• File | Help: Show help information
• File | Exit: Exit the program
• Load | Default Model: Load the default model
• Load | From File...: Load model from file

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How to build?

It is developed with C# WPF and .NET 6 in Visual Studio 2022 Community. So you just need to open the .sln, then build and run.

The working directory of the project is set to Work\ directory under the project root folder. And it contains 3 sample models - Cube.json, Rectangular Pyramid.json and Stair.json.

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Limitations

• Cannot handle models with holes
• In theory, can only handle convex polyhedron. Simple concave polyhedron (such as the Stair.json) can be created with delicately constructed data
• When Muti-color enabled, there may be rendering error in certain view angle caused by the failure of Z-Test