Dec 16, 2025, 1:36:14 PM
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Sweet Home 3D Forum » List all forums » » Forum: 3D problems » » » Thread: Large wall tilts when curved. Math error? » » » » Post: Large wall tilts when curved. Math error? |
Print at Dec 16, 2025, 1:36:14 PM |
| Posted by Keet at Apr 8, 2022, 8:32:13 AM |
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Large wall tilts when curved. Math error? I wanted to create a curved car ramp to an upper level 3.50m higher by using a thick and long wall that I could export as an object. What happens is that curving the wall causes the wall to tilt a little. This is easy to reproduce: Draw a wall 40 meters long and 5 meters wide. Now give it a slope from 0.1cm to 350cm and curve it in a 90° angle. What happens is that the wall tilts with half of the the width disappearing into the ground. You can see that when looking at the low end in 3D view. I put a little box at the low end to see how large the height difference was: The tilt is quite extensive when using such a large wall, more than 3cm above and below the ground level. I assume this happens as the result of using the center of the wall as the calculation center. I think it is a mathematical error when the wall curve is calculated for 3D view because both the top and the ground level should always remain horizontal. Overall not a problem for what I intended to do. I can either live with it or use another program to draw the ramp but the better solution would be to revise the wall calculation so remove the tilt. ------------------------ Debian 10 (Mate desktop) Sweethome3D v6.4.2. ---------------------------------------- Dodecagon.nl 1300+ 3D models, manuals, and projects |
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