Curve modifiers not respected by other objects/cannot be applied correctly #42680

New Issue

Matt Heimlich · 2014-11-21T21:15:32+01:00

Matt Heimlich commented

2014-11-21 21:15:32 +01:00

System Information
Win 7 x64

Blender Version
Broken in 1103abd

Short description of error
Using a shrinkwrap modifier on a curve gives the correct result in preview, but cannot be applied, and other objects relying on the curve shape use the original shape instead. Not sure if this is a failing of the modifier or just the intended behavior, but if it is intended, the modifier probably shouldn't be an option at all.

Exact steps for others to reproduce the error
http://pasteall.org/blend/32987

View curve modifier and behavior of object plane.001

**System Information** Win 7 x64 **Blender Version** Broken in 1103abd **Short description of error** Using a shrinkwrap modifier on a curve gives the correct result in preview, but cannot be applied, and other objects relying on the curve shape use the original shape instead. Not sure if this is a failing of the modifier or just the intended behavior, but if it is intended, the modifier probably shouldn't be an option at all. **Exact steps for others to reproduce the error** http://pasteall.org/blend/32987 View curve modifier and behavior of object plane.001

Matt Heimlich commented

2014-11-21 21:15:32 +01:00

Changed status to: 'Open'

Matt Heimlich commented

2014-11-21 21:15:32 +01:00

Added subscriber: @MatthewHeimlich

Sergey Sharybin was assigned by Bastien Montagne

2014-11-21 22:49:15 +01:00

Bastien Montagne commented

2014-11-21 22:49:15 +01:00

Added subscriber: @mont29

Bastien Montagne commented

2014-11-21 22:49:15 +01:00

Please always attach files here, pasteall is rather volatile storage… curveerror.blend

Sergey, think this one is for you?

Please always attach files here, pasteall is rather volatile storage… [curveerror.blend](https://archive.blender.org/developer/F125263/curveerror.blend) Sergey, think this one is for you?

Sergey Sharybin commented

2014-12-10 13:55:30 +01:00

Changed status from 'Open' to: 'Archived'

Sergey Sharybin closed this issue

2014-12-10 13:55:30 +01:00

Sergey Sharybin commented

2014-12-10 13:55:30 +01:00

The thing here is, the modifier is applied on the tessellated curve, not to the curve's CVs. This makes final result of the curve looks fine. But Curve modifier uses curve path (which is pre-tessellated spline), which gives unexpected result for you.

You can make it so shrinkwrap is applied on the CVs instead, but for that to work reliably you'll probably need to subdivide the spline couple of times to have result you're expecting here.

Thanks for the report, but it's just difference on whether modifier is applied on pre or post tesselated spline, which si totally intentional here,

The thing here is, the modifier is applied on the tessellated curve, not to the curve's CVs. This makes final result of the curve looks fine. But Curve modifier uses curve path (which is pre-tessellated spline), which gives unexpected result for you. You can make it so shrinkwrap is applied on the CVs instead, but for that to work reliably you'll probably need to subdivide the spline couple of times to have result you're expecting here. Thanks for the report, but it's just difference on whether modifier is applied on pre or post tesselated spline, which si totally intentional here,

Sign in to join this conversation.

No Label

Download

What's New

Blender Studio

Manual

Developers Blog

Documentation

Benchmark

Blender Conference

Development Fund

One-time Donations

Curve modifiers not respected by other objects/cannot be applied correctly #42680