82 lines
2.0 KiB
C++
82 lines
2.0 KiB
C++
#ifndef POINT3_H
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#define POINT3_H
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#include "../Assertions.h"
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#include <cmath>
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#include "Point2.h"
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/**
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* 3D Point
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*/
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struct Point3 {
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float x;
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float y;
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float z;
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/** ctor */
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Point3() : x(0), y(0), z(0) {;}
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/** ctor */
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Point3(const float x, const float y, const float z) : x(x), y(y), z(z) {;}
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Point3 operator + (const Point3& o) const {return Point3(x+o.x, y+o.y, z+o.z);}
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Point3 operator - (const Point3& o) const {return Point3(x-o.x, y-o.y, z-o.z);}
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Point3 operator * (const Point3& o) const {return Point3(x*o.x, y*o.y, z*o.z);}
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Point3 operator * (const float v) const {return Point3(v*x, v*y, v*z);}
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Point3 operator / (const float v) const {return Point3(x/v, y/v, z/v);}
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Point3& operator *= (const float v) {x*=v; y*=v; z*=v; return *this;}
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Point3& operator /= (const float v) {x/=v; y/=v; z/=v; return *this;}
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Point3& operator += (const Point3& o) {x+=o.x; y+=o.y; z+=o.z; return *this;}
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Point3& operator -= (const Point3& o) {x-=o.x; y-=o.y; z-=o.z; return *this;}
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bool operator < (const Point3& o) const {return x<o.x && y<o.y && z<o.z;}
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bool operator == (const Point3& o) const {return x==o.x && y==o.y && z==o.z;}
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bool operator != (const Point3& o) const {return x!=o.x || y!=o.y || z!=o.z;}
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Point2 xy() const {return Point2(x,y);}
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/** read-only array access */
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float operator [] (const int idx) const {
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Assert::isBetween(idx, 0, 2, "index out of bounds");
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if (0 == idx) {return x;}
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if (1 == idx) {return y;}
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return z;
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}
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/** get the distance between this point and the other one */
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float getDistance(const Point3& o) const {
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const float dx = x - o.x;
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const float dy = y - o.y;
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const float dz = z - o.z;
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return std::sqrt(dx*dx + dy*dy + dz*dz);
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}
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float length() const {return std::sqrt(x*x + y*y + z*z);}
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float length(const float norm) const {
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return std::pow(
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(std::pow(std::abs(x),norm) +
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std::pow(std::abs(y),norm) +
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std::pow(std::abs(z),norm)
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), 1.0f/norm);
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}
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};
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#endif // POINT3_H
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