GP and Uv image editor - Sculpt offset #49193

New Issue

Nahuel Belich · 2016-08-29T19:12:01+02:00

Nahuel Belich commented

2016-08-29 19:12:01 +02:00

System Information
WIN 7x64
nvidia gtx 460 drv ver 350.12

Blender Version
Broken: Hash: 8a02c5f

Short description of error
On the uv/image editor, (1)Sculpting grease pencil curves, using some displace mode(grab, push, randomize) takes the grease pencil points(vertices) (2)out of the screen

Exact steps for others to reproduce the error
grease pencil test .blend
1- aim with the cursos on the uv image editor black grese pencil stroke.
2-hold E or start the sculpt operator (should be un grab at file opens)
3-try to "grab" the grease pencil stroke.

NOTE: I used the same examples and files for the several probably bugs situations, i was recommended on IRC that address a single report for each potencial bug instead to add all to a single report.

**System Information** WIN 7x64 nvidia gtx 460 drv ver 350.12 **Blender Version** Broken: Hash: 8a02c5f **Short description of error** On the uv/image editor, (1)Sculpting grease pencil curves, using some displace mode(grab, push, randomize) takes the grease pencil points(vertices) (2)out of the screen ![gp sculpt.jpeg](https://archive.blender.org/developer/F347381/gp_sculpt.jpeg) **Exact steps for others to reproduce the error** [grease pencil test .blend](https://archive.blender.org/developer/F347400/grease_pencil_test_.blend) 1- aim with the cursos on the uv image editor black grese pencil stroke. 2-hold E or start the sculpt operator (should be un grab at file opens) 3-try to "grab" the grease pencil stroke. NOTE: I used the same examples and files for the several probably bugs situations, i was recommended on IRC that address a single report for each potencial bug instead to add all to a single report.

Nahuel Belich commented

2016-08-29 19:12:01 +02:00

Changed status to: 'Open'

Nahuel Belich commented

2016-08-29 19:12:01 +02:00

Added subscriber: @NahuelBelich

Sergey Sharybin commented

2016-08-30 10:00:44 +02:00

Added subscribers: @antoniov, @Sergey

Antonio Vazquez was assigned by Sergey Sharybin

2016-08-30 10:00:44 +02:00

Sergey Sharybin commented

2016-08-30 10:00:44 +02:00

@antoniov, mind having a look here? :)

Antonio Vazquez commented

2016-08-30 11:54:53 +02:00

Added subscriber: @JoshuaLeung

Antonio Vazquez commented

2016-08-30 11:54:53 +02:00

@Sergey I don't know this part of the code. I think @JoshuaLeung is the man here.

Antonio Vazquez commented

2016-08-30 11:55:35 +02:00

@JoshuaLeung I checked and the stroke is not parented, so it's not related to matrix inverse

Antonio Vazquez commented

2016-08-30 12:54:21 +02:00

@JoshuaLeung I don't know if this can help you, but I have run some debugs and in gp_brush_grab_apply_cached() sometimes the gso->dvec field get crazy values and the result of mul_v3_v3fl(delta, gso->dvec, data->weights- [x]); is wrong.

Antonio Vazquez removed their assignment 2016-08-31 12:13:22 +02:00

Joshua Leung was assigned by Antonio Vazquez

2016-08-31 12:13:22 +02:00

Antonio Vazquez commented

2016-08-31 12:13:22 +02:00

I have tested the problem and confirmed in 2.77a. The value of mouse position is sometimes weird, specially in the first click with grab sculpt brush.

Brecht Van Lommel commented

2019-05-29 15:22:56 +02:00

Added subscriber: @brecht

Brecht Van Lommel commented

2019-05-29 15:22:56 +02:00

Changed status from 'Open' to: 'Archived'

Brecht Van Lommel closed this issue

2019-05-29 15:22:56 +02:00

Brecht Van Lommel commented

2019-05-29 15:22:56 +02:00

Grease pencil sculpting in 2.8 is completely different, assuming this is no longer relevant.

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GP and Uv image editor - Sculpt offset #49193