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Torque/SDK/lib/maxsdk31/point2.h

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+/**********************************************************************
+ *<
+	FILE: point2.h
+
+	DESCRIPTION: Class definition for Point2
+
+	CREATED BY: Dan Silva
+
+	HISTORY:
+
+ *>	Copyright (c) 1994, All Rights Reserved.
+ **********************************************************************/
+
+#ifndef __POINT2__ 
+
+#define __POINT2__
+
+class ostream;
+
+class DllExport Point2 {
+public:
+	float x,y;
+
+	// Constructors
+	Point2(){}
+	Point2(float X, float Y)  { x = X; y = Y;  }
+	Point2(double X, double Y)  { x = (float)X; y = (float)Y;  }
+	Point2(const Point2& a) { x = a.x; y = a.y; } 
+	Point2(float af[2]) { x = af[0]; y = af[1]; }
+
+    // Data members
+    static const Point2 Origin;
+    static const Point2 XAxis;
+    static const Point2 YAxis;
+
+	// Access operators
+	float& operator[](int i) { return (&x)[i]; }     
+	const float& operator[](int i) const { return (&x)[i]; }  
+	
+	// Conversion function
+	operator float*() { return(&x); }
+
+	// Unary operators
+	Point2 operator-() const { return(Point2(-x,-y)); } 
+	Point2 operator+() const { return *this; }
+    
+    // Property functions
+    float Length() const;
+    int MaxComponent() const;
+    int MinComponent() const;
+    Point2 Normalize() const; // more accurate than *this/Length();
+
+	// Assignment operators
+	Point2& operator-=(const Point2&);
+	Point2& operator+=(const Point2&);
+	Point2& operator*=(float);
+	Point2& operator/=(float);
+
+    Point2& Set(float X, float Y);
+
+	// Binary operators
+	Point2 operator-(const Point2&) const;
+	Point2 operator+(const Point2&) const;
+	float DotProd(const Point2&) const;		// DOT PRODUCT
+	float operator*(const Point2&) const;	// DOT PRODUCT
+
+	// Relational operators
+	int operator==(const Point2& p) const { return (x == p.x && y == p.y); }
+	int operator!=(const Point2& p) const { return ( (x != p.x) || (y != p.y) ); }
+    int Equals(const Point2& p, float epsilon = 1E-6f);
+    
+    // In-place normalize
+    Point2& Unify();
+    float LengthUnify();          // returns old Length
+    };
+
+
+inline float DllExport Length(const Point2&); 
+int DllExport MaxComponent(const Point2&);  // the component with the maximum abs value
+int DllExport MinComponent(const Point2&);  // the component with the minimum abs value
+Point2 DllExport Normalize(const Point2&);  // more accurate than v/Length(v)
+	 
+Point2 DllExport operator*(float, const Point2&);	// multiply by scalar
+Point2 DllExport operator*(const Point2&, float);	// multiply by scalar
+Point2 DllExport operator/(const Point2&, float);	// divide by scalar
+
+ostream DllExport &operator<<(ostream&, const Point2&);
+	 
+// Inlines:
+
+inline float Length(const Point2& v) {	
+	return (float)sqrt(v.x*v.x+v.y*v.y);
+	}
+
+inline float Point2::Length() const {	
+	return (float)sqrt(x*x+y*y);
+	}
+
+inline Point2& Point2::operator-=(const Point2& a) {	
+	x -= a.x;	y -= a.y;  
+	return *this;
+	}
+
+inline Point2& Point2::operator+=(const Point2& a) {
+	x += a.x;	y += a.y;  
+	return *this;
+	}
+
+inline Point2& Point2::operator*=(float f) {
+	x *= f;   y *= f;	
+	return *this;
+	}
+
+inline Point2& Point2::operator/=(float f) { 
+	x /= f;	y /= f;		
+	return *this; 
+	}
+
+inline Point2& Point2::Set(float X, float Y) {
+    x = X; y = Y;
+    return *this;
+    }
+
+inline Point2 Point2::operator-(const Point2& b) const{
+	return(Point2(x-b.x,y-b.y));
+	}
+
+inline Point2 Point2::operator+(const Point2& b) const {
+	return(Point2(x+b.x,y+b.y));
+	}
+
+inline float Point2::DotProd(const Point2& b) const{
+	return(x*b.x+y*b.y);
+	}
+
+inline float Point2::operator*(const Point2& b)const {
+	return(x*b.x+y*b.y);
+	}
+
+inline Point2 operator*(float f, const Point2& a) {
+	return(Point2(a.x*f, a.y*f));
+	}
+
+inline Point2 operator*(const Point2& a, float f) {
+	return(Point2(a.x*f, a.y*f));
+	}
+
+inline Point2 operator/(const Point2& a, float f) {
+	return(Point2(a.x/f, a.y/f));
+	}
+
+#endif
+