Vector Editor based on Paper.js
A working version can be found at https://w00dn.github.io/papergrapher/
raster image tracer (+by user input, ~several of http://paperjs.org/examples/ or geometrizer / primitive.js)
vectors are low-res pictures detailed gradually (~kanji or progressive jpeg), halftone points / lines / shapes in RGB or CMYK
storyboards as vectorized photos; connect to Panoramera
handle mouse velocity
http://paperjs.org/features/#mouse-interaction
http://paperjs.org/tutorials/interaction/mouse-tool-events/
http://paperjs.org/tutorials/interaction/creating-mouse-tools/