gfx

Documentation

Overview

http://jamie-wong.com/2014/08/19/metaballs-and-marching-squares/

demonstrates how to calculate a perpendicular line to 2d given 2 points, make a line out of that based on the unit circle by the basis <cos(t), sin(t)>, then use the perp operator to get a directional basis out of it then we just scale it to get the point, we center it

https://github.com/ssloy/tinyrenderer/wiki/Lesson-2:-Triangle-rasterization-and-back-face-culling barycentric coordinates are used for interpolation between triangle coordinates

http://lodev.org/cgtutor/xortexture.html

http://nothings.org/gamedev/blend_equations_with_destination_alpha.txt

http://justin-liang.com/tutorials/canny/

cosine palettes, based on http://www.iquilezles.org/www/articles/palettes/palettes.htm

http://paulbourke.net/fractals/dla/

http://www.sunshine2k.de/coding/java/TriangleRasterization/TriangleRasterization.html http://blackpawn.com/texts/pointinpoly/ https://fgiesen.wordpress.com/2013/02/10/optimizing-the-basic-rasterizer/

http://fabiensanglard.net/fizzlefade/index.php use of LFSR to generate fill pixels on screen

ported from 9front

http://www.ohiouniversityfaculty.com/youngt/IntNumMeth/ https://blog.demofox.org/2015/08/19/gaussian-blur/ http://northstar-www.dartmouth.edu/doc/idl/html_6.2/Filtering_an_Imagehvr.html#wp1027824

use something like meshlab to view the model files

http://www.sunshine2k.de/coding/java/Houghtransformation/HoughTransform.html http://www.di.univr.it/documenti/OccorrenzaIns/matdid/matdid666794.pdf https://www.ics.uci.edu/~majumder/DIP/classes/EdgeDetect.pdf http://www.hlevkin.com/articles/SobelScharrGradients5x5.pdf

https://en.wikipedia.org/wiki/Hyperbolic_coordinates

https://keithp.com/blogs/iterative-splines/ https://keithp.com/blogs/more-iterative-splines/

http://paulbourke.net/miscellaneous/lens/

draws a convex n-gon

given a point determine if it is left or right of a line

http://paulbourke.net/geometry/polygonise/

based on http://lodev.org/cgtutor/raycasting.html

based on http://lodev.org/cgtutor/raycasting.html

observe the centroid is different for different formula one is just a center of a rect, which is wrong for non-rect one takes an average of the points one is a convex polygon

draw some snowflakes turtle graphics style

http://jwilson.coe.uga.edu/EMT668/EMT668.Folders.F97/Anderson/writeup11/writeup11.html

https://www.johndcook.com/blog/2018/08/30/drawing-spirograph-curves-in-python/

https://en.wikipedia.org/wiki/Superformula https://gpfault.net/posts/superformula.txt.html

http://www.lysator.liu.se/~mikaelk/doc/perspectivetexture/

plane algorithm based on https://casual-effects.com/gamejam/topburn/index.html

https://en.wikipedia.org/wiki/Tupper%27s_self-referential_formula

ported from https://www.a1k0n.net/2011/06/26/obfuscated-c-yahoo-logo.html