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#include <stdio.h>
#include <stdlib.h>
#include <stdbool.h>
#include <SDL2/SDL.h>
#define WINDOW_WIDTH 648
#define WINDOW_HEIGHT 480
#define CIRCLE_SIZE 100
#define HISTORY_SIZE WINDOW_WIDTH - CIRCLE_SIZE
int g_history[HISTORY_SIZE] = {0};
int main(void)
{
for (size_t i = 0; i < HISTORY_SIZE; i++)
g_history[i] = 100;
if (SDL_Init(SDL_INIT_VIDEO) != 0)
exit(1);
SDL_Window *window = SDL_CreateWindow(
"fourier-series-viz",
SDL_WINDOWPOS_UNDEFINED,
SDL_WINDOWPOS_UNDEFINED,
WINDOW_WIDTH,
WINDOW_HEIGHT,
0
);
if (window == NULL)
exit(1);
SDL_Renderer *renderer = SDL_CreateRenderer(window, -1, 0);
if (renderer == NULL)
exit(1);
bool running = true;
while (running)
{
SDL_Event e;
while (SDL_PollEvent(&e))
{
switch (e.type)
{
case SDL_QUIT:
running = false;
break;
case SDL_KEYDOWN:
switch (e.key.keysym.sym)
{
case SDLK_q:
case SDLK_ESCAPE:
running = false;
break;
}
}
}
SDL_SetRenderDrawColor(renderer, 0, 0, 0, 255);
SDL_RenderClear(renderer);
SDL_SetRenderDrawColor(renderer, 255, 255, 255, 255);
for (size_t i = 0; i < HISTORY_SIZE; i++)
{
SDL_RenderDrawPoint(renderer, CIRCLE_SIZE + i, g_history[i]);
}
SDL_RenderPresent(renderer);
SDL_Delay(5);
}
SDL_DestroyRenderer(renderer);
SDL_DestroyWindow(window);
SDL_Quit();
return 0;
}
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