Search found 19 matches

by Bobo the King
Sun Jan 14, 2018 6:04 am
Forum: Animation related help
Topic: Derivatives and integrals of curves
Replies: 0
Views: 215

Derivatives and integrals of curves

Right off the bat, I'd like to emphasize that I'm not interested in the time derivative of functions, which I know can be accomplished under the Convert menu. I'm interested in producing some plots of displacement, velocity, and acceleration. What I would like to do is draw a Bezier curve representi...
by Bobo the King
Sun Nov 05, 2017 9:13 pm
Forum: Animation related help
Topic: Define a mathematical function from a graph
Replies: 8
Views: 616

Re: Define a mathematical function from a graph

Ok, now i quite understand what you want and how your clever hack works and that it is in fact lacks the obvious disadvantage of my approach and solves the broader problem of extracting (approximate) Y for any valid X. It's just that "parallel" movement isn't best to illustrate that since...
by Bobo the King
Sun Nov 05, 2017 6:10 pm
Forum: Animation related help
Topic: Define a mathematical function from a graph
Replies: 8
Views: 616

Re: Define a mathematical function from a graph

I'm trying to come up with a protocol entirely within Synfig in which the user inputs an x value and a corresponding y value is output. As a simple example, Synfig does not at this time support the inverse cosine function. The user could try to approximate it with a Taylor series or some kind of fan...
by Bobo the King
Sun Nov 05, 2017 6:45 am
Forum: Animation related help
Topic: Define a mathematical function from a graph
Replies: 8
Views: 616

Re: Define a mathematical function from a graph

Here's my tutorial on how to do this in Synfig. I'm open to any and all constructive criticism or other feedback. If you like it enough, I'd be honored to see it published on the wiki. Suppose you wish to work in Synfig with numbers on a graph. It could be a graph that already exists and you simply ...
by Bobo the King
Thu Nov 02, 2017 6:00 am
Forum: Animation related help
Topic: Define a mathematical function from a graph
Replies: 8
Views: 616

Define a mathematical function from a graph

Suppose I have an arbitrary function that I'd like to import into Synfig for multiple purposes. As a real-world example, I'd like to work with the refractive index of water, graphed below: http://www.philiplaven.com/Segelstein_Real_RI_10nm-10m.gif (Graph shamelessly ripped from this webpage .) I wou...
by Bobo the King
Thu Jul 28, 2016 6:14 am
Forum: Animation related help
Topic: Change the starting point for width points on a closed advanced outline
Replies: 2
Views: 1869

Re: Change the starting point for width points on a closed advanced outline

Am I missing something? Is there a simple way to alter where the line begins drawing such that I can smoothly animate it going from start to finish? You can adjust the position of the width handles (http://wiki.synfig.org/Handle) circle_widthhandles.gif On this example, i have added two width handl...
by Bobo the King
Thu Jul 28, 2016 5:42 am
Forum: Synfig related help
Topic: File does not load: "Unexpected element" errors
Replies: 5
Views: 1933

Re: File does not load: "Unexpected element" errors

Here's a quick update on my animation. It was for a job interview for a teaching position and I finished it Sunday evening. I believe it impressed the committee because I got the job! I'd like to extend my tremendous and heartfelt thanks to Svarov and BobSynfig for helping fix the file and explainin...
by Bobo the King
Sat Jul 23, 2016 10:02 pm
Forum: Synfig related help
Topic: File does not load: "Unexpected element" errors
Replies: 5
Views: 1933

Re: File does not load: "Unexpected element" errors

Ah, silly me. I should have realized the file was compressed, though I didn't know it could be decompressed in 7Zip. Thanks!

And just so you know, my animation is running fine in 1.1.10. I have ported some files from 1.0.2 to 1.1.10, but I don't believe this was one of them.

Thanks again!
by Bobo the King
Sat Jul 23, 2016 1:29 pm
Forum: Synfig related help
Topic: File does not load: "Unexpected element" errors
Replies: 5
Views: 1933

Re: File does not load: "Unexpected element" errors

Thank you so much! I've looked over the repaired animation and it looks great! I'm really glad the information was all there. I will be sure to keep multiple save files handy from now on. By the way, for future reference, how did you edit the file? I tried opening it in a text editor but (unsurprisi...
by Bobo the King
Fri Jul 22, 2016 3:14 am
Forum: Synfig related help
Topic: File does not load: "Unexpected element" errors
Replies: 5
Views: 1933

File does not load: "Unexpected element" errors

I've been working on a project for about four days and all my progress seems to have been lost because my screen is flooded with "unexpected element" errors and the file fails to load. This is the only forum topic I was able to find that addresses these errors, but I was unable to learn ho...
by Bobo the King
Thu Jul 21, 2016 5:27 am
Forum: Animation related help
Topic: Change the starting point for width points on a closed advanced outline
Replies: 2
Views: 1869

Change the starting point for width points on a closed advanced outline

Draw a closed curve with the Advanced Outline tool (I happened to create mine using the circle tool). Now suppose you'd like to animate it being drawn. Piece of cake: all you have to do is set your width point positions to 0, then animate one of them increasing from 0 to 1. (You also need to change ...
by Bobo the King
Thu Dec 10, 2015 4:42 pm
Forum: Debugging
Topic: Orders of operation in the "Speed" and "Time Offset" parameters
Replies: 3
Views: 1673

Re: Orders of operation in the "Speed" and "Time Offset" parameters

Ah, that's a great idea! I'll consider using it in the long term, although my project is a little group-heavy and I might find the creation of yet more groups a bit difficult to navigate. Still, I think that's going to be the way to go. Thanks!
by Bobo the King
Thu Dec 10, 2015 10:14 am
Forum: Debugging
Topic: Orders of operation in the "Speed" and "Time Offset" parameters
Replies: 3
Views: 1673

Orders of operation in the "Speed" and "Time Offset" parameters

Hey it's me again. This is a problem that may just as well fall under the "Animation related help" or "Feature discussions" subforums, but I've decided to post it here. I'm basically trying to do a little lip-syncing, so I want to delay an animation until I need it and match its ...
by Bobo the King
Mon Dec 07, 2015 2:43 pm
Forum: Animation related help
Topic: Linking to a spline linked to a spline
Replies: 4
Views: 3985

Re: Linking to a spline linked to a spline

Yeah, that's what I'm coming up with. I may just do that. I'll see if it gives me the results I'm looking for. Thanks! Edit: Nope, didn't work. I was hoping to also link the tangent handles to the splines (or to other splines) so that it would create a rounded front to the curve. Instead, I'll be an...
by Bobo the King
Mon Dec 07, 2015 12:12 pm
Forum: Animation related help
Topic: Linking to a spline linked to a spline
Replies: 4
Views: 3985

Re: Linking to a spline linked to a spline

But I don't want the whole region to move with the spline, just some of its vertices. I'd (eventually) like the region to "grow" around the first spline.

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