http://www.redblobgames.com/ học thuật toán làm game
http://www.learnsvg.com/
SVG
Matrix
http://www.coranac.com/documents/geomatrix/
http://bl.ocks.org/mbostock/raw/10591444/b34b3579998f4988da04337310901519df0afc93/ Matrix transform
http://bl.ocks.org/mbostock/10591444
http://codepen.io/ktamas77/pen/EkrCl
http://freespace.virgin.net/hugo.elias/routines/3d_to_2d.htm
3D Svg
https://github.com/ndebeiss/svg3d
http://www2.fc.unesp.br/wrva/artigos/50227.pdf Perspective distortion
http://bl.ocks.org/mbostock/10591444 Perspective distortion example
http://www.math.utah.edu/~treiberg/Perspect/Perspect.htm
