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jamis / sphere-sphere.c
Created December 28, 2018 16:03
Sphere of spheres, stress test for my ray tracer from "The Ray Tracer Challenge" (C implementation)
#include <stdio.h> /* file */
#include <stdlib.h> /* free */
#include <math.h> /* M_PI, cos, sin */
#include <limits.h> /* INT_MAX */
#include "rtc/camera.h"
#include "rtc/shapes/shape.h"
#include "rtc/shapes/sphere.h"
#include "rtc/shapes/group.h"
#include "rtc/shapes/plane.h"
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jamis / rotkohl.txt
Created February 7, 2018 05:52
Basic Rotkohl Recipe
Rotkohl is a traditional German dish made primarily of red cabbage.
My father developed a taste for it in the 1970's, when he lived in Germany
for two years, and I've been trying to find a good recipe for it for
a couple years now. Simultaneously, my dad's diet has become quite
restrictive: no oils, no sugar, etc, and all of the rotkohl recipes I've
found online include both.
The following recipe is one that I've adapted from several sources, and
it is made entirely without sugar or oil (or any of the other bells and
whistles that you'll find in other recipes). The most amazing part is that
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jamis / 000-notes.md
Created February 24, 2017 20:40
Source files for Jamis' "designing for tests" presentation at AtomicJolt

Let's talk about testing.

002-calc

  • Simple recursive-descent parser
  • Abstract Syntax Tree (AST) with three node types (Binary, Unary, Atom)
  • #evaluate is the only public API on Calc
    • parses the input
  • evaluates the AST
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jamis / 000-_init.rb
Last active March 1, 2017 16:31
Source files from a presentation to AtomicJolt about wrapping a general API (Nokogiri) with a domain specific API
# rubocop:disable Style/SingleLineMethods
require 'nokogiri'
class Object; alias try send; end
class NilClass; def try(*); nil; end; end
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jamis / change-x-for-y.rb
Created March 12, 2016 16:43
A script for searching a dictionary file for words that are relatable via a simple text substitution
# Inspired by a church billboard that read:
# "When I becomes we, illness becomes welness"
#
# usage:
# > ruby change-x-for-y.rb i we
# illness wellness
# inch wench
# it wet
# ...
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jamis / Whole Wheat Bread Recipe.txt
Last active March 19, 2019 23:41
Jamis' recipe for homemade whole wheat bread
Jamis' Whole Wheat Bread
Ingredients
(Pardon the mixed metric/imperial units. I'm a product of my time.)
450 g warm water
450 g milk
1 tbl apple cider vinegar
1 tbl shortening
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jamis / upsilon.rb
Created November 28, 2015 20:45
Implementation of an upsilon grid (tiled octagons & squares) and corresponding maze.
require 'chunky_png'
class Cell
attr_reader :row, :col
def initialize(row, col)
@row, @col = row, col
@links = {}
end
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jamis / torus-grid.rb
Last active October 17, 2017 11:40
Generate and display a toroidal grid (adaptively subdivided to reduce distortion).
require 'chunky_png'
class ToroidalGrid
class Cell
attr_reader :row, :column
attr_reader :north, :south
attr_accessor :east, :west
def initialize(row, column)
@row, @column = row, column
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jamis / mater_matcher.rb
Created October 20, 2015 16:35
Mater does Rspec: `expect.to not_to`
RSpec::Matchers.define :not_to do
match { |actual| !actual }
end
RSpec.describe "Mater" do
specify "says `to not to' to mean false" do
expect(false).to not_to
expect(true).not_to not_to
end
end
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jamis / benchmark-dup.rb
Created September 26, 2015 20:28
Compare Array#dup on 1D array, versus Marshal.load(Marshal.dump(...)) on 2D array
require 'benchmark'
N = 100_000
SIZE = 10
array_1d = Array.new(SIZE * SIZE, 0)
array_2d = Array.new(SIZE) { Array.new(SIZE, 0) }
Benchmark.bm do |bm|
bm.report("1d.dup") { N.times { array_1d.dup } }