Line Project tool not cutting but flattening geometry #84228
Labels
No Label
Meta
Good First Issue
Module
Animation & Rigging
Module
Core
Module
Development Management
Module
Eevee & Viewport
Module
Grease Pencil
Module
Modeling
Module
Nodes & Physics
Module
Pipeline, Assets & IO
Module
Platforms, Builds, Tests & Devices
Module
Python API
Module
Rendering & Cycles
Module
Sculpt, Paint & Texture
Module
User Interface
Module
VFX & Video
Priority
High
Priority
Low
Priority
Normal
Status
Archived
Status
Confirmed
Status
Duplicate
Status
Needs Information from Developers
Status
Needs Information from User
Status
Needs Triage
Status
Resolved
Type
Bug
Type
Design
Type
Known Issue
Type
Patch
Type
Report
Type
To Do
No Milestone
No project
No Assignees
6 Participants
Notifications
Due Date
No due date set.
Dependencies
No dependencies set.
Reference: blender/blender-manual#84228
Loading…
Reference in New Issue
No description provided.
Delete Branch "%!s(<nil>)"
Deleting a branch is permanent. Although the deleted branch may continue to exist for a short time before it actually gets removed, it CANNOT be undone in most cases. Continue?
System Information
Operating system: macOS Mojave 10.14.6
Graphics card:
Blender Version
Broken: Version 2.91.0 (2.91.0 2020-11-25) & Version 2.92.0 (2.92.0 2020-12-27)
Worked: n/a
Short description of error
Line Project tool is confusing, is it a cut tool or a flatten tool? The descriptions in Blender and on the online manual seem contradicting. Included are images of the descriptions and the results of using the tool.
Exact steps for others to reproduce the error
Start up Blender and select Sculpting from the splash screen. Use Line project on the sphere & sooner or later it will leave artifacts (squashed geometry instead of deleting it), the total face/vertices count doesn't change after using the tool.
Added subscriber: @kuzey
Added subscriber: @NelsonNAS
Have you ever heard of clipping brushes? Google it. This is how it works.
If you want to cut/remove geometry use trim.
Added subscriber: @rjg
@NelsonNAS Please keep it nice and friendly on the bug tracker.
Changed status from 'Needs Triage' to: 'Confirmed'
The tool works as designed, but I agree that this is entirely unclear from the manual pages. Based on the current description of the boolean operation on could reasonably expect that the geometry is removed as if performing a boolean difference operation based on the camera's frustum and the user's drawn line.
Added subscriber: @lowpolysaac
It's both. You cut by "projecting" the geometry into a plane. But you are not "trimming" or slicing away geometry from your model: you only displace vertices (that's why it's faster that a boolean operation I guess).
In the image (1) it's the common cutting operation but you can also do like (2) and use mask to project/flatten specific parts...
Wow what an a$$hole you are!
Show me any clipping tool that creates a unwanted flat rim around the object, I'll wait idiot!
It's clearly pushing polygons to the bounds of the object that's being displaced, instead of conforming to the remaining part of the object...this is a clearly a bug with the tool (not just a documentation error), my dude.
Thanks lopo, it's that rim of flat faces I have a problem with. If it were projecting to the inside of the remaining mesh then it would be fine, I can remesh and everything would be cool.
Suit yourself.
https://media.discordapp.net/attachments/587761956526751784/793660934715080704/2020-12-30_03-00-48.mp4
Wow...you made a whole video for me, I guess you couldn't find one that showcased it as a feature??
a) So how do you get rid of the projected flat mesh in Zbrush and more importantly, can it be done in Blender?
b) How is that result ever useful in Zbrush or Blender?
c) What's the next step in the process, extruding or clean up, remeshing?
d) why copy some tool exactly, if the result leaves you with additional steps you need to do? To me it's wrong in Zbrush and it's wrong in blender. If it's going to project faces, why not project them to the inside of remaining mesh and then you can remesh to clean up the object, as an example?
I come here try to help Blender become better and I certainly don't need some ass to jump on my case, my dude!
Added subscriber: @nelson-4
@nelson-4 @kuzey Please keep it civil! Technical discussions are fine, but name calling and insults in any shape or form have no place on the bug tracker.
Added subscriber: @PabloDobarro
@PabloDobarro Perhaps you could weigh in. This currently looks like a documentation issue to me and potentially like a limitation of the way the line project tool works. However, since I'm not familiar with the design decision that went into this tool, I don't want to have the last word on this.
Yes, this is just a documentation issue. This tool is not intended to be a boolean operation (that would be line trim, which is not implemented yet). The sculpt-dev branch already has an option to choose between projecting and fairing for this particular tool, but both of them are only moving vertices, no using booleans.
Added subscriber: @Blendify
Changed status from 'Confirmed' to: 'Resolved'
Fixed thanks for the report.