3D Viewport drawing issues with zero-width curves #85664

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opened 2021-02-15 18:28:43 +01:00 by Sybren A. Stüvel · 13 comments

Sybren A. Stüvel commented

2021-02-15 18:28:43 +01:00

Member

System Information
Operating system: both Linux and Windows
Graphics card: GeForce RTX 2080

Blender Version
Broken: 2.93 alpha since cdb3cbd644
Worked: 2.92 beta and master branch before cdb3cbd644

Short description of error
Extra lines are drawn in the viewport when zero-line curves are present.

Exact steps for others to reproduce the error
Just open the attached blend file, and see two lines. The lower one on the ground plane is correct, the diagonal one pointing up from the origin is not.

drawing-problem.blend

The blend file was created by running the following script on a factory-startup:

import bpy

bpy.ops.object.select_all(action='SELECT')
bpy.ops.object.delete(use_global=False)

def create_demo_object():
    data = bpy.data.curves.new("Curve", "CURVE")
    spline = data.splines.new("POLY")
    spline.points.add(1)
    spline.points[0].co = (2, 3, 0, 0)
    spline.points[1].co = (5, 7, 0, 0)
    ob = bpy.data.objects.new("Curve", data)
    scene = bpy.context.scene
    scene.collection.objects.link(ob)

create_demo_object()

**System Information** Operating system: both Linux and Windows Graphics card: GeForce RTX 2080 **Blender Version** Broken: 2.93 alpha since cdb3cbd644 Worked: 2.92 beta and master branch before cdb3cbd644 **Short description of error** Extra lines are drawn in the viewport when zero-line curves are present. **Exact steps for others to reproduce the error** Just open the attached blend file, and see two lines. The lower one on the ground plane is correct, the diagonal one pointing up from the origin is not. ![image.png](https://archive.blender.org/developer/F9804925/image.png) [drawing-problem.blend](https://archive.blender.org/developer/F9804932/drawing-problem.blend) The blend file was created by running the following script on a factory-startup: ``` import bpy bpy.ops.object.select_all(action='SELECT') bpy.ops.object.delete(use_global=False) def create_demo_object(): data = bpy.data.curves.new("Curve", "CURVE") spline = data.splines.new("POLY") spline.points.add(1) spline.points[0].co = (2, 3, 0, 0) spline.points[1].co = (5, 7, 0, 0) ob = bpy.data.objects.new("Curve", data) scene = bpy.context.scene scene.collection.objects.link(ob) create_demo_object() ```

Sybren A. Stüvel commented

2021-02-15 18:28:43 +01:00

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Added subscriber: @dr.sybren

Added subscriber: @dr.sybren

blender-admin commented

2021-02-15 18:28:43 +01:00

#85732 was marked as duplicate of this issue

#85732 was marked as duplicate of this issue

blender-admin commented

2021-02-15 18:28:43 +01:00

blender/blender-addons#85730 was marked as duplicate of this issue

blender/blender-addons#85730 was marked as duplicate of this issue

blender-admin commented

2021-02-15 18:28:43 +01:00

#85647 was marked as duplicate of this issue

#85647 was marked as duplicate of this issue

blender-admin commented

2021-02-15 18:28:43 +01:00

#85685 was marked as duplicate of this issue

#85685 was marked as duplicate of this issue

Hans Goudey self-assigned this 2021-02-15 18:30:25 +01:00

Philipp Oeser commented

2021-02-16 09:45:24 +01:00

Member

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

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

Philipp Oeser commented

2021-02-16 11:20:25 +01:00

Member

Added subscribers: @esmilesvfx, @lichtwerk

Added subscribers: @esmilesvfx, @lichtwerk

Philipp Oeser commented

2021-02-16 11:21:22 +01:00

Member

Multiple reports are now coming in, so will set to high prio.

Multiple reports are now coming in, so will set to high prio.

Hans Goudey commented

2021-02-16 18:31:02 +01:00

Member

Thanks @lichtwerk, I'll fix this today.

Thanks @lichtwerk, I'll fix this today.

blender-admin commented

2021-02-17 04:40:16 +01:00

This issue was referenced by ab484ff22f

This issue was referenced by ab484ff22f4d9a1651f1b5b3475a222a056b001d

Hans Goudey commented

2021-02-17 04:40:35 +01:00

Member

Changed status from 'Confirmed' to: 'Resolved'

Changed status from 'Confirmed' to: 'Resolved'

Hans Goudey closed this issue

2021-02-17 04:40:35 +01:00

Philipp Oeser commented

2021-02-17 09:30:43 +01:00

Member

Added subscriber: @Edmis

Added subscriber: @Edmis

Philipp Oeser commented

2021-02-17 10:48:53 +01:00

Member

Added subscribers: @MaybeLamia, @ChrisGraz

Added subscribers: @MaybeLamia, @ChrisGraz

Thomas Dinges added this to the 2.93 LTS milestone 2023-02-07 18:46:33 +01:00

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