#include "Vector.h"

#include <math.h>

Vector Vector_withValues(float x, float y, float z) {
	Vector vector;
	
	vector.x = x;
	vector.y = y;
	vector.z = z;
	return vector;
}

void Vector_normalize(Vector * vector) {
	float magnitude;
	
	magnitude = sqrt((vector->x * vector->x) + (vector->y * vector->y) + (vector->z * vector->z));
	vector->x /= magnitude;
	vector->y /= magnitude;
	vector->z /= magnitude;
}

Vector Vector_normalized(Vector vector) {
	Vector_normalize(&vector);
	return vector;
}

float Vector_magnitude(Vector vector) {
	return sqrt((vector.x * vector.x) + (vector.y * vector.y) + (vector.z * vector.z));
}

float Vector_magnitudeSquared(Vector vector) {
	return ((vector.x * vector.x) + (vector.y * vector.y) + (vector.z * vector.z));
}

Vector Vector_add(Vector vector1, Vector vector2) {
	return Vector_withValues((vector1.x + vector2.x), (vector1.y + vector2.y), (vector1.z + vector2.z));
}

Vector Vector_subtract(Vector vector1, Vector vector2) {
	return Vector_withValues((vector1.x - vector2.x), (vector1.y - vector2.y), (vector1.z - vector2.z));
}

float Vector_dot(Vector vector1, Vector vector2) {
	return ((vector1.x * vector2.x) + (vector1.y * vector2.y) + (vector1.z * vector2.z));
}

Vector Vector_cross(Vector vector1, Vector vector2) {
	Vector result;
	
	result.x = ((vector1.y * vector2.z) - (vector1.z * vector2.y));
	result.y = ((vector1.z * vector2.x) - (vector1.x * vector2.z));
	result.z = ((vector1.x * vector2.y) - (vector1.y * vector2.x));
	return result;
}