Fonts with self-intersections not displayed correctly #42071

New Issue

pistol ioan · 2014-10-04T10:39:18+02:00

pistol ioan commented

2014-10-04 10:39:18 +02:00

Short description of error
Some fonts downloaded from Google Fonts like Quicksand, Raleway, Comfortaa, Jura, have editable properties (width and others) and therefore have geometry full of intersections.

The scanfill in Blender has a limitation that does not consider the direction of the contours (clockwise with counterclockwise) to define a hole.
Here is a GIF showing how the direction of the contour should influence the result:

Here are some examples of fonts showing the problem:


Roboto Flex	Quicksand	KG Broken Vessels Sketch	Comfortaa

Exact steps for others to reproduce the error

Download any of the mentioned fonts.
Open simple .blend file with fonts implemented.
fontissues.blend
KG_Broken_Vessels_Sketch.blend
KGBrokenVesselsSketch.ttf

Comfortaa-New.zip
Quicksand-New.zip

**Short description of error** Some fonts downloaded from Google Fonts like `Quicksand`, `Raleway`, `Comfortaa`, `Jura`, have editable properties (width and others) and therefore have geometry full of intersections. The `scanfill` in Blender has a limitation that does not consider the direction of the contours (clockwise with counterclockwise) to define a hole. Here is a **GIF** showing how the direction of the contour should influence the result: ![GIF.gif](https://archive.blender.org/developer/F9577758/GIF.gif) Here are some examples of fonts showing the problem: |![image.png](https://archive.blender.org/developer/F13969815/image.png)|![image.png](https://archive.blender.org/developer/F9560856/image.png)|![KG_Broken_Vessels_Sketch.jpg](https://archive.blender.org/developer/F114626/KG_Broken_Vessels_Sketch.jpg)|![Screenshot_1.png](https://archive.blender.org/developer/F13966663/Screenshot_1.png) | -- | -- | -- | -- | |Roboto Flex|Quicksand|KG Broken Vessels Sketch|Comfortaa **Exact steps for others to reproduce the error** - Download any of the mentioned fonts. - Open simple .blend file with fonts implemented. [fontissues.blend](https://archive.blender.org/developer/F9560862/fontissues.blend) [KG_Broken_Vessels_Sketch.blend](https://archive.blender.org/developer/F114628/KG_Broken_Vessels_Sketch.blend) [KGBrokenVesselsSketch.ttf](https://archive.blender.org/developer/F114625/KGBrokenVesselsSketch.ttf) [Comfortaa-New.zip](https://archive.blender.org/developer/F9560863/Comfortaa-New.zip) [Quicksand-New.zip](https://archive.blender.org/developer/F9560866/Quicksand-New.zip)

pistol ioan commented

2014-10-04 10:39:18 +02:00

Changed status to: 'Open'

pistol ioan commented

2014-10-04 10:39:18 +02:00

Added subscriber: @istoltoto

blender-admin commented

2014-10-04 10:39:18 +02:00

#102753 was marked as duplicate of this issue

blender-admin commented

2014-10-04 10:39:18 +02:00

#94764 was marked as duplicate of this issue

blender-admin commented

2014-10-04 10:39:18 +02:00

#84629 was marked as duplicate of this issue

Sergey Sharybin was assigned by Bastien Montagne

2014-10-04 12:03:55 +02:00

Bastien Montagne commented

2014-10-04 12:03:55 +02:00

Added subscriber: @mont29

Bastien Montagne commented

2014-10-04 12:03:55 +02:00

Hmmmm… that font has some weird crossing cruves, not sure our filling algorithm supports that? Sergey should know. ;)

Sergey Sharybin commented

2014-10-07 11:23:13 +02:00

Changed status from 'Open' to: 'Archived'

Sergey Sharybin closed this issue

2014-10-07 11:23:13 +02:00

Sergey Sharybin commented

2014-10-07 11:23:13 +02:00

Added subscriber: @ideasman42

Sergey Sharybin commented

2014-10-07 11:23:13 +02:00

It's not supported. Self-intersections confuses the scanfill used for tessellation. Known limitation, not a bug. Thanks for the report anyway.

@ideasman42, CCing you so you can use the file as a reference when looking into some possible improvements.

It's not supported. Self-intersections confuses the scanfill used for tessellation. Known limitation, not a bug. Thanks for the report anyway. @ideasman42, CCing you so you can use the file as a reference when looking into some possible improvements.

pistol ioan commented

2014-10-08 07:23:18 +02:00

Same problem i found with this font:
http://www.fontspace.com/david-kerkhoff/dk-crayon-crumble

Many thanks for investigate this.

Same problem i found with this font: http://www.fontspace.com/david-kerkhoff/dk-crayon-crumble Many thanks for investigate this.

Campbell Barton commented

2021-01-28 21:11:34 +01:00

Added subscribers: @ReljaTrajkovic, @mano-wii, @rjg

Germano Cavalcante commented

2022-01-12 20:35:26 +01:00

Added subscriber: @Kent-Davis

Germano Cavalcante changed title from ~~Font not working or displayed correctly in Blender~~ to Fonts with self-intersections not displayed correctly

2023-01-10 15:42:36 +01:00

Germano Cavalcante commented

2023-01-10 15:43:31 +01:00

Added subscribers: @hxika, @DuarteRamos, @HooglyBoogly, @PratikPB2123, @Harley