#include "pch.h" // use stdafx.h in Visual Studio 2017 and earlier
#include "Geometry.h"

AABB::AABB()
{
	min = Vec3f(1e5, 1e5, 1e5);
	max = Vec3f(0, 0, 0);
}

LineSegment::LineSegment(const Vec3f &s, const Vec3f &e) : start(s), end(e)
{
	calculate();
}

float LineSegment::getLength() const
{
	return length;
}

Vec3f LineSegment::getDir() const
{
	return dir;
}

void LineSegment::calculate()
{
	Vec3f diff = end - start;
	length = diff.length();
	dir = diff.norm();
}

FaceCenterComparator::FaceCenterComparator(const std::vector<Vec3f> &centers, int axis)
	: faceCenters(centers), longAxis(axis) {}

bool FaceCenterComparator::operator()(const size_t &a, const size_t &b) const
{
	return faceCenters[a][longAxis] < faceCenters[b][longAxis];
}