Add changeable direction of gravity to support generation #357

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MrUnknownDE · 2026-04-05T16:20:13+02:00

MrUnknownDE commented

2026-04-05 16:20:13 +02:00

Originally created by @HarrierPigeon on 3/11/2026

Description

This adds the ability to change the direction of support generation, and takes the concept of gravity and broadens it to any arbitrary X-axis and Y-axis angle between -45 and 45 degrees.

This is my first PR to an open source project ever, so please let me know if there's anything I need to change.

Ground plane tilt is configurable per-printer in printer settings.
Added a visual indicator of the direction of gravity to the build plate at the (0,0,0) XYZ axes that shows up when tilt(s) are applied.
The Support Painting interface has been modified to also be aware of the direction of tilt

Screenshots/Recordings/Graphs

Additional Printer Settings

Visual Indicator

Support Generation

Normal Supports, X=45, Y=-45

Tree Supports, X=45, Y=-45

Support Painter

https://github.com/user-attachments/assets/7d37732c-c738-4429-b99e-b5879df48aa7

Tests

Builds tested primarily on Ubuntu 24.04 with local builds.

*Originally created by @HarrierPigeon on 3/11/2026* # Description This adds the ability to change the direction of support generation, and takes the concept of gravity and broadens it to any arbitrary X-axis and Y-axis angle between -45 and 45 degrees. This is my first PR to an open source project *ever*, so please let me know if there's anything I need to change. - Ground plane tilt is configurable per-printer in printer settings. - Added a visual indicator of the direction of gravity to the build plate at the (0,0,0) XYZ axes that shows up when tilt(s) are applied. - The Support Painting interface has been modified to also be aware of the direction of tilt # Screenshots/Recordings/Graphs ## Additional Printer Settings <img width="1204" height="1016" alt="{75BFD5D8-3B5A-496D-A4E1-A2A864FE9962}" src="https://github.com/user-attachments/assets/364764da-645f-44ce-87fa-541675b012e4" /> ## Visual Indicator <img width="641" height="491" alt="{A4B74A03-31A2-449F-A424-AB856F490DA0}" src="https://github.com/user-attachments/assets/5ae4f9c2-7283-4e38-8e46-c4fabf68d5e7" /> ## Support Generation ### Normal Supports, X=45, Y=-45 <img width="641" height="491" alt="{A4B74A03-31A2-449F-A424-AB856F490DA0}" src="https://github.com/user-attachments/assets/77e1e6f9-467f-4495-9d1b-f1f9486bb9fd" /> ### Tree Supports, X=45, Y=-45 <img width="1674" height="979" alt="{1C299393-BC4D-498A-A6F1-AC3DB1AB3295}" src="https://github.com/user-attachments/assets/70c6fa3f-79b4-4362-8f16-29a9997afe74" /> ### Support Painter https://github.com/user-attachments/assets/7d37732c-c738-4429-b99e-b5879df48aa7 # Tests Builds tested primarily on Ubuntu 24.04 with local builds.

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Reference: github/OrcaSlicer#357