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// Copyright 2016 The SwiftShader Authors. All Rights Reserved.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
#ifndef Point_hpp
#define Point_hpp
namespace sw
{
struct Vector;
struct Matrix;
struct Point
{
Point();
Point(const int i);
Point(const Point &P);
Point(const Vector &v);
Point(float Px, float Py, float Pz);
Point &operator=(const Point &P);
union
{
float p[3];
struct
{
float x;
float y;
float z;
};
};
float &operator[](int i);
float &operator()(int i);
const float &operator[](int i) const;
const float &operator()(int i) const;
Point &operator+=(const Vector &v);
Point &operator-=(const Vector &v);
friend Point operator+(const Point &P, const Vector &v);
friend Point operator-(const Point &P, const Vector &v);
friend Vector operator-(const Point &P, const Point &Q);
friend Point operator*(const Matrix &M, const Point& P);
friend Point operator*(const Point &P, const Matrix &M);
friend Point &operator*=(Point &P, const Matrix &M);
float d(const Point &P) const; // Distance between two points
float d2(const Point &P) const; // Squared distance between two points
static float d(const Point &P, const Point &Q); // Distance between two points
static float d2(const Point &P, const Point &Q); // Squared distance between two points
};
}
#include "Vector.hpp"
namespace sw
{
inline Point::Point()
{
}
inline Point::Point(const int i)
{
const float s = (float)i;
x = s;
y = s;
z = s;
}
inline Point::Point(const Point &P)
{
x = P.x;
y = P.y;
z = P.z;
}
inline Point::Point(const Vector &v)
{
x = v.x;
y = v.y;
z = v.z;
}
inline Point::Point(float P_x, float P_y, float P_z)
{
x = P_x;
y = P_y;
z = P_z;
}
inline Point &Point::operator=(const Point &P)
{
x = P.x;
y = P.y;
z = P.z;
return *this;
}
inline float &Point::operator()(int i)
{
return p[i];
}
inline float &Point::operator[](int i)
{
return p[i];
}
inline const float &Point::operator()(int i) const
{
return p[i];
}
inline const float &Point::operator[](int i) const
{
return p[i];
}
}
#endif // Point_hpp