78 lines
2.3 KiB
C++
78 lines
2.3 KiB
C++
#include <iostream>
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#include <numeric>
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#include <cmath>
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#include <map>
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#define OLC_PGE_APPLICATION
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#include "olcPixelGameEngine.h"
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class Mandelbrot : public olc::PixelGameEngine {
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public:
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Mandelbrot() {
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sAppName = "Mandelbrot set";
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}
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bool OnUserCreate() override {
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return true;
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}
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bool OnUserUpdate(float fElapsedTime) override {
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#pragma omp parallel for schedule(dynamic)
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for (int pX = 0; pX < 1000; pX++) {
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long double mX = ((long double)pX - 1000.0f / 2.0f) / 100 * m_scale - 1 + m_x;
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#pragma omp parallel for schedule(dynamic)
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for (int pY = 0; pY < 600; pY++) {
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long double mY = (600.0f / 2.0f - (long double)pY) / 100 * m_scale - 1 + m_y;
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long double Zre = 0.0f; long double Zim = 0.0f;
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int iteration = 0;
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while ((Zre * Zre) + (Zim * Zim) <= 2 * 2 && iteration < m_maxIterations) {
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long double tX = (Zre * Zre) - (Zim * Zim) + mX;
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Zim = (2 * Zre * Zim) + mY;
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Zre = tX;
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iteration++;
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}
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long double ratio = (long double)iteration - std::log2(std::log2(Zre*Zre + Zim*Zim)) / m_maxIterations;
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<<<<<<< HEAD
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olc::Pixel colour = olc::Pixel(ratio + 255.0f, ratio + 255.0f, ratio + 255.0f);
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=======
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olc::Pixel colour = olc::Pixel(ratio, ratio, ratio);
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>>>>>>> 447c0c7a41568e3993820342ea06d7b95d1fe18c
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DrawRect(pX, pY, 1, 1, colour);
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}
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}
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if (GetKey(olc::Key::W).bHeld)
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m_y *= 1.01f;
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if (GetKey(olc::Key::S).bHeld)
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m_y /= 1.01f;
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if (GetKey(olc::Key::D).bHeld)
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m_x *= 1.01f;
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if (GetKey(olc::Key::A).bHeld)
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m_x /= 1.01f;
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if (GetKey(olc::Key::DOWN).bHeld)
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m_scale *= 1.01f;
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if (GetKey(olc::Key::UP).bHeld)
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m_scale /= 1.01f;
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std::cout << "Render time: " << fElapsedTime << std::endl;
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return true;
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}
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private:
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long double m_x = 1.0f;
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long double m_y = 1.0f;
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long double m_scale = 0.7f;
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int m_maxIterations = 100;
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std::map<int, olc::Pixel> m_palete;
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};
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int main(int argc, char** argv) {
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Mandelbrot app;
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app.Construct(1000, 600, 1, 1);
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app.Start();
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return 0;
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}
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