#include "vec_utils.h"


bool vec2_is_null(Vector2 v) {
  if (v.x == 0 && v.y == 0) {
    return true;
  }
  return false;
}

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;
}