#ifndef VEC_UTIL_H_
#define VEC_UTIL_H_
#include <math.h>
#include <raylib.h>
static const Vector2 NULL_VEC2 = {0, 0};

Vector2 transform_to_center(Vector2 v) {
  int width = GetRenderWidth();
  int height = GetRenderHeight();
  Vector2 result = {v.x + width / 2.0, v.y + height / 2.0};
  return result;
}

Vector2 vec2_sum(const Vector2 *a, const Vector2 *b) {
  Vector2 result = {a->x + b->x, a->y + b->y};
  return result;
}
Vector2 vec2_diff(const Vector2 *a, const Vector2 *b) {
  Vector2 result = {a->x - b->x, a->y - b->y};
  return result;
}

float vec2_len(Vector2 v) { return sqrtf(v.x * v.x + v.y * v.y); }

Vector2 vec2_normalize(const Vector2 v) {
  float len = vec2_len(v);
  if (len == 0) {
    return NULL_VEC2;
  }
  Vector2 result = {v.x / len, v.y / len};
  return result;
}

Vector2 vec2_scale(const Vector2 *normal, const float len) {
  Vector2 result = {len * normal->x, len * normal->y};
  return result;
}

float vec2_dot(const Vector2 *a, const Vector2 *b) {
  return a->x * b->x + a->y * b->y;
}

#endif // VEC_UTIL_H_