A.N.T. Landscape broken mesh generation #85225

New Issue

Simon I. · 2021-01-30T11:41:33+01:00

Simon I. commented

2021-01-30 11:41:33 +01:00

System Information
Operating system: Linux-5.8.0-41-generic-x86_64-with-debian-bullseye-sid 64 Bits
Graphics card: Mesa Intel(R) HD Graphics 620 (KBL GT2) Intel 4.6 (Core Profile) Mesa 20.2.6

Blender Version
Broken: version:

2.92.0 Beta, branch: master, commit date: 2021-01-29 16:08, hash: 5d215d5225
2.93.0 Alpha, branch: master, commit date: 2021-01-29 16:35, hash: d0f59d3842
2.92.0 Alpha, branch: master, commit date: 2020-11-19 22:15, hash: fdd3032f8f
The bug was introduced in commit 74188e6502
Worked: 2.91.2, branch: master, commit date: 2021-01-19 16:15, hash: 5be9ef4177

Addon Information
Name: A.N.T.Landscape (0, 1, 8)
Author: Jimmy Hazevoet

Short description of error
When generating a mesh with A.N.T.Landscape, the values from the operator panel (Adjust last Operation) are misinterpreted which results in a very distorted mesh. When I try to tweak the parameters to achieve something closer to the expected result, it seems like the offset and gain values under noise settings are way to sensitive, moving them just a tiny bit changes the mesh to much.

Exact steps for others to reproduce the error

Enable Addon A.N.T.Landscape
Add Mesh --> Landscape
open Adjust last Operation Panel
Click on "Operator Presets" (at the very top of the panel)
Choose "Mountain 1"

See the result here:

And compare it to the results from the same preset from Blender 2.91.2

**System Information** Operating system: Linux-5.8.0-41-generic-x86_64-with-debian-bullseye-sid 64 Bits Graphics card: Mesa Intel(R) HD Graphics 620 (KBL GT2) Intel 4.6 (Core Profile) Mesa 20.2.6 **Blender Version** Broken: version: - 2.92.0 Beta, branch: master, commit date: 2021-01-29 16:08, hash: `5d215d5225` - 2.93.0 Alpha, branch: master, commit date: 2021-01-29 16:35, hash: `d0f59d3842` - 2.92.0 Alpha, branch: master, commit date: 2020-11-19 22:15, hash: `fdd3032f8f` The bug was introduced in commit 74188e6502 Worked: 2.91.2, branch: master, commit date: 2021-01-19 16:15, hash: `5be9ef4177` **Addon Information** Name: A.N.T.Landscape (0, 1, 8) Author: Jimmy Hazevoet **Short description of error** When generating a mesh with A.N.T.Landscape, the values from the operator panel (Adjust last Operation) are misinterpreted which results in a very distorted mesh. When I try to tweak the parameters to achieve something closer to the expected result, it seems like the offset and gain values under noise settings are way to sensitive, moving them just a tiny bit changes the mesh to much. **Exact steps for others to reproduce the error** 1. Enable Addon A.N.T.Landscape 2. Add Mesh --> Landscape 3. open Adjust last Operation Panel 4. Click on "Operator Presets" (at the very top of the panel) 5. Choose "Mountain 1" See the result here: ![ANT_2-92-0](https://archive.blender.org/developer/F9605133/ANT_2-92-0) And compare it to the results from the same preset from Blender 2.91.2 ![ANT_2-91-2](https://archive.blender.org/developer/F9605131/ANT_2-91-2)

Simon I. commented

2021-01-30 11:41:33 +01:00

Added subscriber: @Simon_I

Simon I. commented

2021-01-30 11:53:42 +01:00

When looking at A / ant_landscape I doubt that this is a problem with the addon itself. The latest change to the addon's code was from Oct 16 2020...

When looking at [A / ant_landscape ](https://developer.blender.org/diffusion/BA/browse/master/ant_landscape/) I doubt that this is a problem with the addon itself. The latest change to the addon's code was from Oct 16 2020...

Simon I. commented

2021-01-30 12:34:48 +01:00

It looks like the distortion only occurs when using Noise Type "Ridged MFractal" or "Slick Mountains"

Robert Guetzkow commented

2021-01-30 13:16:14 +01:00

Changed status from 'Needs Triage' to: 'Confirmed'

Robert Guetzkow self-assigned this 2021-01-30 13:16:14 +01:00

Robert Guetzkow commented

2021-01-30 13:23:08 +01:00

The variable scope was improperly changed in 74188e6502. The declaration of the variable pwr should not have been moved into the loop since it was previously declared outside and pwr is modified in the loop. With the error introduced in the commit the value of pwr is reset in each iteration.

The variable scope was improperly changed in 74188e6502. The declaration of the variable `pwr` should not have been moved into the loop since it was previously declared outside and `pwr` is modified in the loop. With the error introduced in the commit the value of `pwr` is reset in each iteration.

blender-admin commented

2021-02-02 20:35:47 +01:00

This issue was referenced by 4a80c0e275

This issue was referenced by 4a80c0e27519b63929aa48b6fb1d673666829b21

Robert Guetzkow commented

2021-02-02 20:41:16 +01:00

Changed status from 'Confirmed' to: 'Resolved'

Robert Guetzkow closed this issue

2021-02-02 20:41:16 +01:00

Thomas Dinges added this to the 2.92 milestone 2023-02-08 16:14:50 +01:00

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A.N.T. Landscape broken mesh generation #85225