95 lines
2.1 KiB
C++
95 lines
2.1 KiB
C++
#pragma once
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#include "vec.hpp"
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#include <cstddef>
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#include <cstdlib>
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#include <cstdio>
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#include <functional>
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#include <unistd.h>
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#include <termios.h>
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#include <vector>
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struct Screen {
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/**
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* Unit pixel information struct
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*/
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struct Symbol {
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char sym;
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vec<3> color = {0,0,0};
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bool visible = true;
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Symbol &operator=(char c) { sym = c; return *this; };
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};
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/**
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* Function taking screen coords and space coords and returning a Symbol for
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* that position
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*/
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using char_shader_t = std::function<Symbol(int, int, float, float)>;
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std::size_t w, h;
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float dx = 0, dy = 0;
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float sx = 1, sy = 1.8;
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void draw();
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void clear();
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Symbol &at(std::size_t n);
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Symbol &at(int x, int y);
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Symbol &at(float x, float y);
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void resize(std::size_t n);
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void resize(std::size_t x, std::size_t y);
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std::pair<float, float> screen_to_xy(int w, int h);
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std::pair<int, int> xy_to_screen(float x, float y);
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Screen(std::size_t n) : buf(nullptr) { resize(n); }
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Screen(std::size_t x, std::size_t y) : buf(nullptr) { resize(x, y); }
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~Screen() { delete[] buf; }
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std::vector<const vec<2>*> points;
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std::vector<std::pair<const vec<2>*,const vec<2>*>> vecs;
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char_shader_t shader;
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bool draw_vecs = true;
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private:
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Symbol *buf;
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Symbol _dummy;
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static inline void gotoxy(int x, int y)
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{
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std::printf("\033[%d;%dH", y, x);
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}
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};
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using colorizer_t = std::function<vec<3>(float)>;
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struct TanhColorizer {
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float scale = 1.0;
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float translate = 0.0;
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vec<3> operator()(float y);
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private:
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static vec<3> hsl_to_rgb(float h, float s, float l);
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static float hue_to_rgb(float p, float q, float t);
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};
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static termios old, current;
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static inline void enter_noncanonical_mode(void)
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{
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tcgetattr(STDIN_FILENO, &old);
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current = old;
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current.c_lflag &= ~ICANON; /* disable buffered i/o */
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current.c_lflag &= ~ECHO; /* set no echo mode */
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current.c_cc[VMIN] = 0;/* no wait */
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current.c_cc[VTIME] = 0;/* no wait */
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tcsetattr(STDIN_FILENO, TCSANOW, ¤t);
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}
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static inline void enter_canonical_mode(void){ tcsetattr(0, TCSANOW, &old); }
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