Error animating advanced spline.

[strujillodv]

Synfig version & platform: AppImage 1.3.14 - Archlinux KDE

Issue description:

Animate an advanced spline doesn't work well in development version 1.3.14.

You searched for -> Version 1.2.2

https://drive.google.com/file/d/1N7LegIjv0jKZtsYe0gDWepUZFnG6Io8p/view?usp=sharing

The opted -> Version 1.3.14

https://drive.google.com/file/d/1LgKH5AcSeAv8Ve_xKrUs_j9c6R3Efa4X/view?usp=sharing

File exercise: https://drive.google.com/file/d/1QtYhewPdsbh80UH9HNHr2M5Vsz0Mp50q/view?usp=sharing

[rodolforg]

1.3.11 : ok
1.3.12 : bad :P

@strujillodv , in the meanwhile, just type a number close enough to 1.0 in width point poistion, like 0.9999 , but no 1.0

[strujillodv]

@rodolforg, Changing to a value less than 1.0 it does not work,

[rodolforg]

Here it worked: the starting point fixed in 0.00001 instead of 0 and end width point moves until 0.9999 or something like that.
I'll try again later.

Devs: Anyway, after a git bisect, the guilty commit
c35c747

[FirasH]

#1329 is the same issue?

[morevnaproject]

Agrh, again outline issues! 🤣

[rodolforg]

Looped advanced-outline layers with 3 vertices and 2 width points (called here as WP).
I changed the Side Type Before of the first WP and the Side Type After of the last WP as shown. The remaining side types are set Interpolation.
I also changed the position of both WP as also shown.

So we can notice that the specific cases of WP in the boundaries are an issue.
Other issue is that the sharp cuspid is not as expected (it doesn't "go straight" to the corner).
And for last we can see that if a WP is at the beginning (0.0), it shows the cuspid shape even though the last WP is not near the end of spline (as shown in second row of last column)

@morevnaproject

[rodolforg]

I colored to highlight what is wrong (red) and what is right (green) regarding the WP positions and the cuspid shape.

looped-advanced-line-tip-test.zip

[morevnaproject]

@rodolforg Thank you so much! I am investigating this issue now... ^__^

[morevnaproject]

You searched for -> Version 1.2.2

The opted -> Version 1.3.14

I can see there are two different issues here.

First one - line visible where is shouldn't - is addressed in #1518.

Second issue is in looped spline (triangle) - the position of animated widthpoint is wrong. This is related to issue discussed in #314 (comment). It was fixed, but seems it still appears for cases when widthpoint is animated. Needs further investigation. (Possibly, I need to look how Animated valuenode handles widthpoints...)

[rodolforg]

Second issue is in looped spline (triangle) - the position of animated widthpoint is wrong. This is related to issue discussed in #314 (comment)

I don't think it is wrong.
The Sif file was created in 1.3.14. Opening it in 1.2 will always have this problem.
The inverse (file 1.2 in 1.3.14) was fixed

[morevnaproject]

Hey, you right! False alarm. 😄
That's great!

[strujillodv]

@morevnaproject The error continues

Synfig-git built on July 17

Synfig stable

[rodolforg]

@strujillodv It was fixed in master and 1.3.x branches.

What git branch did you use it?

[strujillodv]

@rodolforg this is the version

[rodolforg]

@strujillodv strange enough I can't find that Revision ID in master branch.
However, the fix was merged into master branch July 12.

So please update your master branch and build it again:

• If you downloaded the sourcecode in a zip file, redo it
• If you used git commands, call git pull origin

[strujillodv]

@rodolforg Sorry, my mistake had not updated the repository before testing.

It is working very well

Gif created with Synfig-git