82 lines
2.5 KiB
C
82 lines
2.5 KiB
C
|
// This source code is property of the Computer Graphics and Visualization
|
||
|
|
// chair of the TU Dresden. Do not distribute!
|
||
|
|
// Copyright (C) CGV TU Dresden - All Rights Reserved
|
||
|
|
|
||
|
|
#pragma once
|
||
|
|
|
||
|
|
#include <Eigen/Core>
|
||
|
|
|
||
|
|
class Box
|
||
|
|
{
|
||
|
|
//internal storage for lower and upper corner points of the box
|
||
|
|
std::pair<Eigen::Vector3f, Eigen::Vector3f> bounds;
|
||
|
|
|
||
|
|
public:
|
||
|
|
|
||
|
|
//creates an empty box like the method Clear
|
||
|
|
Box();
|
||
|
|
|
||
|
|
//construct a box with the gven lower and upper corner points
|
||
|
|
Box(const Eigen::Vector3f& lbound, const Eigen::Vector3f& ubound);
|
||
|
|
|
||
|
|
//returns the corner point which is the lower bound of the box in all dimensions
|
||
|
|
Eigen::Vector3f& LowerBound();
|
||
|
|
|
||
|
|
//returns the corner point which is the lower bound of the box in all dimensions
|
||
|
|
const Eigen::Vector3f& LowerBound() const;
|
||
|
|
|
||
|
|
//returns the corner point which is the upper bound of the box in all dimensions
|
||
|
|
Eigen::Vector3f& UpperBound();
|
||
|
|
|
||
|
|
//returns the corner point which is the upper bound of the box in all dimensions
|
||
|
|
const Eigen::Vector3f& UpperBound() const;
|
||
|
|
|
||
|
|
//returns a vector containing the extents of the box in all dimensions
|
||
|
|
Eigen::Vector3f Extents() const;
|
||
|
|
|
||
|
|
//returns a vector containing the extents of the box in all dimensions divided by 2
|
||
|
|
Eigen::Vector3f HalfExtents() const;
|
||
|
|
|
||
|
|
//returns the center of the box
|
||
|
|
Eigen::Vector3f Center() const;
|
||
|
|
|
||
|
|
//returns the surface area of the box
|
||
|
|
float SurfaceArea() const;
|
||
|
|
|
||
|
|
//returns the volume of the box
|
||
|
|
float Volume() const;
|
||
|
|
|
||
|
|
//returns the box radius for a given direction vector a
|
||
|
|
//if the box is centered at the origin
|
||
|
|
//then the projection of the box on direction a is contained within the Interval [-r,r]
|
||
|
|
float Radius(const Eigen::Vector3f& a) const;
|
||
|
|
|
||
|
|
//returns true if the box b overlaps with the current one
|
||
|
|
bool Overlaps(const Box& b) const;
|
||
|
|
|
||
|
|
//returns true if the point p is inside this box
|
||
|
|
bool IsInside(const Eigen::Vector3f& p) const;
|
||
|
|
|
||
|
|
//returns true if box b is inside this box
|
||
|
|
bool IsInside(const Box& b) const;
|
||
|
|
|
||
|
|
//creates a box which goes from [+infinity,- infinity] in al dimensions
|
||
|
|
void Clear();
|
||
|
|
|
||
|
|
//enlarges the box such that the point p is inside afterwards
|
||
|
|
void Insert(const Eigen::Vector3f& p);
|
||
|
|
|
||
|
|
//enlarges the box such that box b is inside afterwards
|
||
|
|
void Insert(const Box& b);
|
||
|
|
|
||
|
|
//returns the point on or inside the box with the smallest distance to p
|
||
|
|
Eigen::Vector3f ClosestPoint(const Eigen::Vector3f& p) const;
|
||
|
|
|
||
|
|
//returns the squared distance between p and the box
|
||
|
|
float SqrDistance(const Eigen::Vector3f& p) const;
|
||
|
|
|
||
|
|
//returns the euclidean distance between p and the box
|
||
|
|
float Distance(const Eigen::Vector3f& p) const;
|
||
|
|
|
||
|
|
};
|