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#include <thread>
#include <vector>
#include <iostream>
#include <chrono>
#include <complex>
#include <atomic>
#include <unistd.h>
#include <sstream>
#include "libpng_wrapper.hpp"
#include "mthread.hpp"
#include "test.hpp"
using namespace std;
//defaults
//TODO remove temp_settings
const uint32_t DEFAULT_WIDTH = 1920;
const uint32_t DEFAULT_HEIGHT = 1080;
const int DEFAULT_JOBS = 1;
const string DEFAULT_IMG_PATH = "out.png";
//CONTENDOR_HI REPLACEMENT - 50000 iterations
const complex<double> DEFAULT_MIN_CORD (-0.74364386269 - 0.00000003000, 0.13182590271 - 0.00000003000);
const complex<double> DEFAULT_MAX_CORD (-0.74364386269 + 0.00000003000, 0.13182590271 + 0.00000003000);
//CONTENDOR_ZOOM- 50000 iterations
//const complex<double> DEFAULT_MIN_CORD (-0.74364386269 - 0.00000001000, 0.13182590271 - 0.00000001000);
//const complex<double> DEFAULT_MAX_CORD (-0.74364386269 + 0.00000001000, 0.13182590271 + 0.00000001000);
const unsigned int DEFAULT_ITERS = 50000;
const unsigned int DEFAULT_BAILOUT = 256;
void print_help(char *arg, bool error) {
stringstream help_text;
help_text.precision(numeric_limits<double>::max_digits10);
help_text << "Usage: " << arg << " [options]\n"
"Options:\n"
"\t-h\tthis cruft\n"
"\t-w\timage width \t\t\t\tdefault: " << DEFAULT_WIDTH << "\n"
"\t-H\timage height\t\t\t\tdefault: " << DEFAULT_HEIGHT << "\n"
"\t-o\timage output path\t\t\tdefault: " << DEFAULT_IMG_PATH << "\n"
"\t-j\tjobs -- set this to your corecount\tdefault: " << DEFAULT_JOBS << "\n"
"\t-c\tcomplex bottom border\t\t\tdefault: " << DEFAULT_MIN_CORD << "\n"
"\t-C\tcomplex top border\t\t\tdefualt: " << DEFAULT_MAX_CORD << " \n"
"\t-i\tfractal iterations\t\t\tdefault: " << DEFAULT_ITERS << "\n"
"\t-I\tbailout value\t\t\t\tdefault: " << DEFAULT_BAILOUT << "\n"
"\nFOR COMPLEX NUMBERS: if you want to input, say, 2-3i, your option argument will be \"(2,-3)\".\n";
cout << help_text.str() << endl;
exit(error);
}
template <class t>
bool getopt_int(t& number, char *optarg, char opt, char *arg) {
try { number = stoi(optarg); }
catch(invalid_argument const&) {
cout << "You must supply an integer for option -" << opt << "." << endl;
print_help(arg, true);
return true;
}
catch(out_of_range const&) {
cout << "You must supply an integer under " << numeric_limits<t>::max() << " for option -" << opt << "." << endl;
print_help(arg, true);
return true;
}
return false;
}
int main(int argc, char **argv) {
//argument options
uint32_t width = DEFAULT_WIDTH;
uint32_t height = DEFAULT_HEIGHT;
unsigned int jobs = DEFAULT_JOBS;
string img_path = DEFAULT_IMG_PATH;
complex<double> min_cord = DEFAULT_MIN_CORD;
complex<double> max_cord = DEFAULT_MAX_CORD;
unsigned int m_iters = DEFAULT_ITERS;
unsigned int bailout = DEFAULT_BAILOUT;
bool jobs_set = false;
//I could not find a better way to turn a string into a complex variable
stringstream complex_str_buffer;
int arg;
while((arg = getopt(argc, argv, "hw:H:o:j:c:C:i:I:")) != -1) {
switch(arg) {
case 'h':
print_help(argv[0], false);
break;
case 'w':
getopt_int(width, optarg, 'w', argv[0]);
break;
case 'H':
getopt_int(height, optarg, 'H', argv[0]);
break;
case 'o':
img_path = optarg;
break;
case 'j':
getopt_int(jobs, optarg, 'j', argv[0]);
jobs_set = true;
break;
case 'c':
complex_str_buffer << optarg;
complex_str_buffer >> min_cord;
break;
case 'C':
complex_str_buffer << optarg;
complex_str_buffer >> max_cord;
break;
case 'i':
getopt_int(m_iters, optarg, 'i', argv[0]);
break;
case 'I':
getopt_int(bailout, optarg, 'I', argv[0]);
break;
default:
cout << "Invalid option." << endl;
print_help(argv[0], true);
exit(1);
break;
}
}
if(!jobs_set) {
cout << "\nPERFORMANCE TIP: for best preformance, set jobs to the number of cores in your CPU.\n"
"See " << argv[0] << " -h for help.\n" << endl;
}
double *vmap = new double[width * height];
unsigned int *histogram = new unsigned int[m_iters]();
unsigned int histogram_sum = 0;
double *freq_hue = new double[m_iters]();
double current_hue = 0;
unsigned int width_per_job = width / jobs;
atomic<uint32_t> progress(0);
png image(img_path, width, height);
thread threads[jobs];
//allocate worker threads, spawn workers
mthread** worker_objects = (mthread **)malloc(sizeof(mthread) * jobs);
for(unsigned int j = 0; j < jobs - 1; j++) {
worker_objects[j] = new mthread(j * width_per_job, (j + 1) * width_per_job,
min_cord, max_cord, bailout, m_iters,
image, vmap, histogram, worker_objects, j, jobs, progress);
}
//last worker thread needs the width to go all the way to the edge of the screen,
//regardless of rounding issues
worker_objects[jobs - 1] = new mthread((jobs - 1) * width_per_job, width - 1,
min_cord, max_cord, bailout, m_iters,
image, vmap, histogram, worker_objects, jobs - 1, jobs, progress);
for(unsigned int j = 0; j < jobs; j++) worker_objects[j]->dispatch();
//the progress variables is simply how many pixels we have calculated
while(progress < (height * jobs)) {
cout << "\033[2K\033[0GCalculating pixel values... " << ((float)progress / (height * jobs)) * 100 << "\% complete" << flush;
this_thread::sleep_for(chrono::milliseconds(100));
}
cout << endl;
for(unsigned int j = 0; j < jobs; j++) worker_objects[j]->join();
//now to color the image
cout << "Coloring image... (this shouldn't take more then a few seconds)" << endl;
//find the sum of all histogram values, we could ajust this to increase or decrease contrast
for(unsigned int p = 0; p < m_iters; p++) histogram_sum += histogram[p];
for(unsigned int i = 0; i < m_iters; i++) {
current_hue += histogram[i] / (double)histogram_sum;
freq_hue[i] = current_hue;
}
//now to calculate the colors
{
double below, above, hue;
int c;
uint32_t x, y;
int rgb[3];
for(y = 0; y < height; y++) {
for(x = 0; x < width; x++) {
below = freq_hue[(int)vmap[(y * width) + x]];
above = freq_hue[(int)ceil(vmap[((y * width) + x) + 1])];
hue = (((above - below) * fmod(vmap[(y * width) + x], 1.0)) + below);
rgb[0] = 255 * cos((M_PI * hue) - M_PI);
rgb[1] = 255 * cos((M_PI * hue) - ((M_PI) / 2.0));
rgb[2] = 255 * cos(M_PI * hue);
for(c = 0; c < 3; c++) if(rgb[c] < 0) rgb[c] = 0;
image.set_pixel(x, y, (png_byte)rgb[0], (png_byte)rgb[1], (png_byte)rgb[2]);
}
}
}
for(unsigned int j = 0; j < jobs; j++) delete worker_objects[j];
cout << "Image exported to " << img_path << "." << endl;
}
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