31 lines
771 B
C++
31 lines
771 B
C++
#ifndef _POINT_H_
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#define _POINT_H_
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#include <iostream>
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// A simple 3D point class. In this simple world, we'll follow the
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// convention often used in Computer Graphics. y is the vertical
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// axes, "pointing" up. The x and z axes define the ground plane.
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class Point {
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public:
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// CONSTRUCTOR
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Point(double x, double y, double z) : x_(x),y_(y),z_(z) {}
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// ACCESSORS
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double get_x() const { return x_; }
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double get_y() const { return y_; }
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double get_z() const { return z_; }
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private:
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// REPRESENTATION
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double x_,y_,z_;
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};
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// A helper function to print a Point.
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std::ostream& operator<< (std::ostream &ostr, const Point &p);
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// A helper function to compute the slope between two Points.
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double compute_slope(const Point &a, const Point &b);
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#endif |