125 lines
3.2 KiB
C++
Executable File
125 lines
3.2 KiB
C++
Executable File
/**********************************************************************
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*<
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FILE: ipoint2.h
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DESCRIPTION: Class definintion for IPoint2: Integer 2D point.
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CREATED BY: Dan Silva
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HISTORY:
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*> Copyright (c) 1994, All Rights Reserved.
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**********************************************************************/
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#ifndef __IPOINT2__
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#define __IPOINT2__
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class ostream;
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class IPoint2 {
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public:
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int x,y;
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// Constructors
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IPoint2(){}
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IPoint2(int X, int Y) { x = X; y = Y; }
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IPoint2(const IPoint2& a) { x = a.x; y = a.y; }
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IPoint2(int af[2]) { x = af[0]; y = af[1]; }
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// Access operators
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int& operator[](int i) { return (&x)[i]; }
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const int& operator[](int i) const { return (&x)[i]; }
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// Conversion function
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operator int*() { return(&x); }
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// Unary operators
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IPoint2 operator-() const { return(IPoint2(-x,-y)); }
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IPoint2 operator+() const { return *this; }
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// Assignment operators
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IPoint2& operator-=(const IPoint2&);
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IPoint2& operator+=(const IPoint2&);
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DllExport IPoint2& operator*=(int);
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DllExport IPoint2& operator/=(int);
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// Binary operators
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DllExport IPoint2 operator-(const IPoint2&) const;
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DllExport IPoint2 operator+(const IPoint2&) const;
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DllExport int DotProd(const IPoint2&) const; // DOT PRODUCT
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DllExport int operator*(const IPoint2&) const; // DOT PRODUCT
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// Relational operators
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int operator==(const IPoint2& p) const { return (x == p.x && y == p.y); }
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int operator!=(const IPoint2& p) const { return (x != p.x || y != p.y); }
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};
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int DllExport Length(const IPoint2&);
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IPoint2 DllExport Normalize(const IPoint2&); // Return a unit vector.
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IPoint2 DllExport operator*(int, const IPoint2&); // multiply by scalar
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IPoint2 DllExport operator*(const IPoint2&, int); // multiply by scalar
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IPoint2 DllExport operator/(const IPoint2&, int); // divide by scalar
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ostream DllExport &operator<<(ostream&, const IPoint2&);
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// Inlines:
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inline int MaxComponent(const IPoint2& p) { return(p.x>p.y?0:1); }
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inline int MinComponent(const IPoint2& p) { return(p.x<p.y?0:1); }
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inline int Length(const IPoint2& v) {
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return (int)sqrt((double)(v.x*v.x+v.y*v.y));
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}
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inline IPoint2& IPoint2::operator-=(const IPoint2& a) {
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x -= a.x; y -= a.y;
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return *this;
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}
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inline IPoint2& IPoint2::operator+=(const IPoint2& a) {
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x += a.x; y += a.y;
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return *this;
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}
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inline IPoint2& IPoint2::operator*=(int f) {
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x *= f; y *= f;
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return *this;
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}
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inline IPoint2& IPoint2::operator/=(int f) {
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x /= f; y /= f;
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return *this;
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}
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inline IPoint2 IPoint2::operator-(const IPoint2& b) const{
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return(IPoint2(x-b.x,y-b.y));
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}
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inline IPoint2 IPoint2::operator+(const IPoint2& b) const {
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return(IPoint2(x+b.x,y+b.y));
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}
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inline int IPoint2::DotProd(const IPoint2& b) const{
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return(x*b.x+y*b.y);
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}
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inline int IPoint2::operator*(const IPoint2& b)const {
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return(x*b.x+y*b.y);
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}
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inline IPoint2 operator*(int f, const IPoint2& a) {
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return(IPoint2(a.x*f, a.y*f));
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}
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inline IPoint2 operator*(const IPoint2& a, int f) {
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return(IPoint2(a.x*f, a.y*f));
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}
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inline IPoint2 operator/(const IPoint2& a, int f) {
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return(IPoint2(a.x/f, a.y/f));
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}
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#endif
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