Applying scale doesn't matter on a 3D curve #82706

New Issue

Robert S · 2020-11-13T19:43:46+01:00

Robert S commented

2020-11-13 19:43:46 +01:00

System Information
Operating system: Windows 10
Graphics card: 1080ti

Blender Version
Broken: 2.90.1
Worked: -

Short description of error
After flipping an imported SVG to 3D and adding a bevel on it, the bevel's visual size and depth number stays the same after applying scale.

Exact steps for others to reproduce the error

Import the following SVG: https://en.wikipedia.org/wiki/File:Epyx_Logo.svg
Scale it up 20 times.
Join all curves together.
Choose 3D, full fill mode.
Set a bevel depth to 0.00015m
Apply scale.

Result:

Nothing happens, except for the transform window switching scale to 1.0

Expected:

Either the bevel should visually change size or the depth number should change its value.

**System Information** Operating system: Windows 10 Graphics card: 1080ti **Blender Version** Broken: 2.90.1 Worked: - **Short description of error** After flipping an imported SVG to 3D and adding a bevel on it, the bevel's visual size and depth number stays the same after applying scale. **Exact steps for others to reproduce the error** 1. Import the following SVG: https://en.wikipedia.org/wiki/File:Epyx_Logo.svg 2. Scale it up 20 times. 3. Join all curves together. 4. Choose 3D, full fill mode. 5. Set a bevel depth to 0.00015m 6. Apply scale. Result: Nothing happens, except for the transform window switching scale to 1.0 Expected: Either the bevel should visually change size or the depth number should change its value.

Robert S commented

2020-11-13 19:43:46 +01:00

Added subscriber: @RobertS

Richard Antalik commented

2020-11-14 03:23:18 +01:00

Added subscriber: @iss

Richard Antalik commented

2020-11-14 03:23:18 +01:00

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

Richard Antalik commented

2020-11-14 03:23:18 +01:00

Can't find reason why this happens but it looks it should not happen.

Evan Wilson commented

2020-11-14 06:42:25 +01:00

Added subscriber: @EAW

Evan Wilson commented

2020-11-14 06:42:25 +01:00

Nothing happens, except for the transform window switching scale to 1.0

I noticed that the mean radius changes from 1.0 to 20.0 after applying the scale. To see this, you have to jump into edit mode before and after applying the scale. I just tested and this behavior goes back to at least 2.79b. To get the 'expected' result of a much smaller bevel, I had to manually adjust the mean radius in edit mode to be 1.0. If a curve is scaled in edit mode, this issue does not occur.

Further research shows shows that this behavior is intentional. See the explanations in #35305 (Apply Scale in curves don't work as is supposed to.), #34533 (bezier curve extrusion seems to be wrong after applying scale.), and #72149 (curve geometry extrude does not respect scale.).

> Nothing happens, except for the transform window switching scale to 1.0 I noticed that the mean radius changes from 1.0 to 20.0 after applying the scale. To see this, you have to jump into edit mode before and after applying the scale. I just tested and this behavior goes back to at least 2.79b. To get the 'expected' result of a much smaller bevel, I had to manually adjust the mean radius in edit mode to be 1.0. If a curve is scaled in edit mode, this issue does not occur. --- [Further research shows](https://developer.blender.org/search/query/DH1m1SX1I0Pe/#R) shows that this behavior is intentional. See the explanations in #35305 (Apply Scale in curves don't work as is supposed to.), #34533 (bezier curve extrusion seems to be wrong after applying scale.), and #72149 (curve geometry extrude does not respect scale.).

Richard Antalik commented

2020-11-16 08:54:44 +01:00

@EAW Thanks, I have noticed that it changes the radius, but I didn't know this affects bevel. I think this is best described by #34533 so I will merge this.

Richard Antalik commented

2020-11-16 08:54:54 +01:00

Closed as duplicate of #34533

Richard Antalik closed this issue

2020-11-16 08:54:54 +01:00

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Applying scale doesn't matter on a 3D curve #82706