robbrit

/**
 * This program reads an L-system from standard input and outputs a PGM image.
 * The following characters are possible:
 *   uppercase: Move forward with pen down
 *   lowercase: Move forward with pen up
 *   +: turn left
 *   -: turn right
 *   [: push current turtle state
 *   ]: pop turtle state
 * usage: turtle ANGLE STEP_SIZE > output.pgm

robbrit

#!/usr/bin/env ruby

grammar, iterations, extra = ARGV

if grammar == nil or !File.exists?(grammar)
  puts "no grammar file"
  exit
end

symbols = {}

robbrit

#include <SDL/SDL.h>
#include <stdlib.h>
#include <time.h>
#include <math.h>

#define SIZE 800
#define PRECISION 300000

struct paird{
  double x, y;

robbrit

/* This program uses SDL.
 * To install:
 *
 *   sudo apt-get install libsdl1.2-dev
 *
 * To compile:
 *
 *   gcc -lSDL filename.c
 *
 */

robbrit

/**
 * This needs Nvidia's CUDA library, and SDL installed.
 * You can compile using nvcc:
 *
 *   nvcc -L/path/to/cuda/lib64 -lcudart `sdl-config --libs --cflags`
 *
 */

#include <stdio.h>
#include <assert.h>

robbrit

#include <SDL/SDL.h>
#include <SDL/SDL_thread.h>
#include <cmath>
#include <iostream>

using namespace std;

double scale = 1.0;
double x_offset = 0.0, y_offset = 0.0;

robbrit

require 'benchmark'
require 'andand'

class Hash
  def except(*blacklist)
    {}.tap do |h|
      (keys - blacklist).each { |k| h[k] = self[k] }
    end
  end

robbrit

class Hash
  def except(*blacklist)
    self.reject {|key, value| blacklist.include?(key) }
  end
  
  def only(*whitelist)
    self.reject {|key, value| !whitelist.include?(key) }
  end
end