#pragma once

#include <stdarg.h>

struct intersection {
  float t;
  struct shape const * object;
};

#ifndef INTERSECTIONS_MAX
#define INTERSECTIONS_MAX 1024
#endif

struct intersections {
  int count;
  struct intersection i[INTERSECTIONS_MAX];
};

struct intersection intersection(float t, struct shape const * const object)
{
  return (struct intersection){ t, object };
}

inline static void intersections(struct intersections * intersections, int count, ...)
{
  va_list ap;
  va_start(ap, count);
  for (int i = 0; i < count; i++) {
    intersections->i[i] = va_arg(ap, struct intersection);
  }
  va_end(ap);

  intersections->count = count;
}