Addons. Tiny CAD makes circle with spare vertex #100813

New Issue

Vyacheslav Kobozev · 2022-09-04T12:06:33+02:00

2022-09-04 12:06:33 +02:00

System Information
Operating system: Windows-10-10.0.17763-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 512.95

Blender Version
Broken: version: 3.2.2, branch: master, commit date: 2022-08-02 18:15, hash: blender/blender@bcfdb14560

Short description of error
When you use operation «CCN ressurect circle center» addon produces circle polyline with two points on the same place. It prevents to move origin to the center, when you use «Origin to selected» in the cursor or median mode and it can produce zero polygons when you extrude.

2022-09-04_13-01-16.mp4

**System Information** Operating system: Windows-10-10.0.17763-SP0 64 Bits Graphics card: NVIDIA GeForce RTX 3060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 512.95 **Blender Version** Broken: version: 3.2.2, branch: master, commit date: 2022-08-02 18:15, hash: `blender/blender@bcfdb14560` **Short description of error** When you use operation «CCN ressurect circle center» addon produces circle polyline with two points on the same place. It prevents to move origin to the center, when you use «Origin to selected» in the cursor or median mode and it can produce zero polygons when you extrude. [2022-09-04_13-01-16.mp4](https://archive.blender.org/developer/F13458233/2022-09-04_13-01-16.mp4)

Vyacheslav Kobozev commented

2022-09-04 12:06:33 +02:00

Added subscriber: @Vyach

Jesse Yurkovich commented

2022-09-04 22:21:27 +02:00

Added subscribers: @tetha.z, @deadpin

Jesse Yurkovich commented

2022-09-04 22:21:27 +02:00

CC @tetha.z

Omar Emara commented

2022-09-14 11:58:38 +02:00

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

sw-tya commented

2024-01-10 01:42:14 +01:00

Minimal steps to re-create:

Edit, Preferences, Add-ons, enable "Mesh: tinyCAD Mesh Tools"
File, New, General
Delete cube
Set view (7): Top Orthographic
Add, Mesh, Circle
Edit Mode
Move selected (all points of the circle), x=1, y=-1
Clear selected, then select 3 adjacent verts (I choose South East)
Right click, TinyCAD, CCEN
Select "num verts" to be 8
(Screenshot)
Deslect points, then select 1 of new 8 points
Select linked: Ctrl l
(Screenshot)
Observe the points selected "median point" is not in the centre.

Inspect source code at:
https://projects.blender.org/blender/blender-addons/blame/branch/main/mesh_tiny_cad/CCEN.py

Line 28:

for i in range(num_verts + 1):

The "+1" causes the created circle to overlap the first and last points generated. This has been the case forever.

Changing it to be:

for i in range(num_verts):

The number of points in the generated circle is now correct and the median is now in the centre.
Here is a screenshot demonstrating the fix:

Minimal steps to re-create: 1. Edit, Preferences, Add-ons, enable "Mesh: tinyCAD Mesh Tools" 2. File, New, General 3. Delete cube 4. Set view (7): Top Orthographic 5. Add, Mesh, Circle 6. Edit Mode 7. Move selected (all points of the circle), x=1, y=-1 8. Clear selected, then select 3 adjacent verts (I choose South East) 9. Right click, TinyCAD, CCEN 10. Select "num verts" to be 8 11. (Screenshot) ![New_circle_creation.png](/attachments/7e14f365-b7c5-4434-b84f-f5555926997a) 12. Deslect points, then select 1 of new 8 points 13. Select linked: Ctrl l 14. (Screenshot) ![8point_circle_with_9_verts.png](/attachments/a79e62f0-acf9-486e-8cc7-7566bbde08eb) 15. Observe the points selected "median point" is not in the centre. Inspect source code at: https://projects.blender.org/blender/blender-addons/blame/branch/main/mesh_tiny_cad/CCEN.py Line 28: for i in range(num_verts + 1): The "+1" causes the created circle to overlap the first and last points generated. This has been the case forever. Changing it to be: for i in range(num_verts): The number of points in the generated circle is now correct and the median is now in the centre. Here is a screenshot demonstrating the fix: ![8point_circle_corrected.png](/attachments/e4e5ae69-9999-4f8d-9ff1-d2eb8ab2fa8e)

New_circle_creation.png

296 KiB

8point_circle_with_9_verts.png

297 KiB

8point_circle_corrected.png

300 KiB

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Addons. Tiny CAD makes circle with spare vertex #100813