A downloadable tool for macOS and Linux

Linebaby is a tool for making draw-on animations with pencil lines. Draw paths using Bézier curves, give them an entrance and exit transitions, and control the path's appearance. All of the animations on this page were made with Linebaby!

A real hover-state use case.

Export

  • Sprite sheet with optional CSS (PNG)
  • Image sequence (PNG)
  • @2x retina scaling

Manual

Keyboard Controls

  • Tab: toggle between draw and select mode
  • Escape: deselect currently selected path
  • Middle click and drag/scroll: pan
  • Left/right arrow: scrub timeline
  • Space: play/pause
  • Backspace/delete: delete selected path or vertex
  • Ctrl+D: duplicate selected path

Select Mode Select Mode

Click a path to select it. Once selected, the path may be dragged to move it. A vertex can be moved by dragging it. Dragging a vertex's control point will move both control points mirrored about the vertex. To move a single control point without mirroring, hold Alt while dragging.

Draw Mode Draw Mode

Click to create a new path and add a vertex. While a path is selected, clicking will add new vertices to the end of the selected path. Press Escape to deselect a path and click to start a new path. Clicking and dragging will pull out the control points for curves.

Trim Mode Trim Mode

Trim mode is used to define the playable range of your animation. Access it from the export menu. Move your cursor left to right above the timeline and click to select an animation start time. Click again to select an animation end time.

Artboard Mode Artboard Mode

Artboard mode is used to define the export pixel dimensions and area. Access it from the export menu. Move your cursor to select the first corner of the export area. Move your cursor and click again to select the second corner.

Timeline

Timeline

Path Properties

Path Properties

Tricks

GIFs

GIF support isn't yet built into Linebaby, but generating a GIF from PNGs is not hard. Install ImageMagick and gifsicle and run these commands after exporting your animation as an image sequence:

$ mogrify -format gif -alpha remove -background white *.png
$ gifsicle --delay 4 --loopcount=forever --output out.gif *.gif

This is currently a prototype, just enough to get the job done. Here are a few limitations that may be lifted in the future:

  • Maximum of 64 paths
  • Paths have a maximum of 64 vertices
  • Maximum timeline duration is 10 seconds
  • Only one brush

Please post your cool animations!


I'm available for work!

Please get in contact if you need any kind of graphics programming, game development, or anything else interesting!

- Matt

Isaac

Published 85 days ago
StatusPrototype
CategoryTool
PlatformsmacOS, Linux
Authorwinduptoy
Tags2D, animation
Average sessionA few seconds
InputsKeyboard, Mouse
LinksHomepage, Twitter

Download

Download
linebaby.linux.zip 590 kB
Download
linebaby.mac.zip 2 MB

Development log

Comments

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(Edited 2 times) (+1)(-1)

Hello ^^

I'm very interested in this too. Can I expect a windows version anytime soon? (actually i did not see how to download the tool).

(+2)

Brian Western, 2018