plot_sin.c

#include "ctermui_screen.h"
#include <math.h>
#include <time.h>

#define SIZE 50

void generate_data(float xvalues[], float yvalues[]) {
  srand(time(NULL));
  for (int i = 0; i < SIZE; ++i) {
    xvalues[i] = i;
    yvalues[i] = sin(i);
  }
}

void periodic(ctermui_screen_t *screen_p) {
  ctermui_screen_t screen = *screen_p;
  ctermui_layout_t root = screen->root;
  ctermui_component_t c = root->components[0];
  ScatterPlot *plt = (ScatterPlot *)c->core_component;
  float xvalues[SIZE];
  float yvalues[SIZE];
  if (screen->loop_count % 100 == 0) {

    for (int i = 0; i < SIZE; i++) {
      plt->xvalues[i]++;
      plt->yvalues[i] = sin(plt->xvalues[i]);
    }
    ctermui_screen_refresh_layout(screen, root);
  }
}

int main() {

  ctermui_screen_t screen = ctermui_screen_init();
  ctermui_layout_t root = ctermui_layout_new_root(
      CTERMUI_HORIZONTAL, screen->width, screen->height);

  float xvalues[SIZE];
  float yvalues[SIZE];
  generate_data(xvalues, yvalues);
  ctermui_component_t plt = ctermui_new_scatter_plot(
      "scatter_plot", xvalues, yvalues, SIZE, CTERMUI_BRIGHT_CYAN,
      CTERMUI_EMPTY, CTERMUI_BRIGHT_RED, '*', 1);
  ctermui_layout_add_component(root, plt);
  ctermui_screen_set_layout_root(screen, root);
  ctermui_screen_loop_start(screen, periodic, 10000);
}