Pohlke
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This add-on (v1.1.2) is part of the presentation The Missing Camera or: How I Learned to Stop Worrying and Love Oblique Projection at BCON24.
Usage
- Place cursor.
- Add a Pohlke camera.
- From the 'Pohlke' tool menu ('N' shortcut).
- Selecting 'Pohlke Camera' from the add menu ('Shift + A' shortcut).
- A camera is created.
- Change projection presets and parameters in the 'Adjust Last Operation panel'.
How it works
- Axonometric projections are determined by the projected axis angle pairs.
- Oblique projections automatically modify the X pixel ratio prior to rendering.
References
The add-on is named after Karl Wilhelm Pohlke, author of a generalizing parallel projection theorem in 1853. The cover image is a detail of plate VIII "Palatin" from "L'art de bâtir chez les Romains" by Auguste Choisy (Ducher et Cie, Paris, 1873).
Citation
A paper has not yet been published on the add-on, but if you use it in your academic work you can cite it from Zenodo:
Rippinger, J., Bertin, I., & Lefèvre, M. (2026). Pohlke [Computer software]. Zenodo. https://doi.org/10.5281/ZENODO.7330245
Contributors
What's New
2.0.0 March 12th, 2026
Big thanks to ianb1204 for his hard work!
- Core changes to source code: complete rewrite of the codebase architecture for better modularity and maintainability.
- Added alpha & beta angle parameters: users can freely input paper-plane angles (α and β) to define custom projections.
- Added scale info: dynamic display of axis reduction factors (x, y, z) while adjusting angles.
- Added automatic camera rotation and altitude computation based on α and β variables.
- Added projection mode toggle: switch to choose between axonometric (orthogonal) and oblique modes.
- Added quick toggles between Above (top-down) and Below (bottom-up) views.
- Added toggle for quadrant (
++,+−,−+,−−) selection to orient view. - Added live parameter updates with real-time camera repositioning in the 3D Viewport.
- Added geometry functions: centralized mathematical logic in utils/geometry_math.py to handle complex projection calculations independently of the Blender UI.
- Added tests: integrated a comprehensive suite of unit tests using pytest to validate geometric functions and prevent mathematical regressions.
- Added CI/CD pipeline: Woodpecker CI configuration (.woodpecker/test.yaml) to automate testing across multiple Python versions (3.11, 3.12, 3.12).
- Added documentation: explanation, reference and generated API sections.
This is so useful, especially for architectural representations 💯
Great work!
This was so needed in Blender! Thank you
I had to make a python script in a .blend file to do that thing and it was less good, thanks so much and long live to you (btw, great graphic appearance for your add-on man)