120 lines
3.1 KiB
C++
120 lines
3.1 KiB
C++
/* basics.h
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*
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* Declaration of basic types.
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*
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* - Vector3 is a three tuple vector of x, y, and z.
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* - Ray is a vector plus a direction.
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* - Color is a four tuple of red, green, blue, and alpha.
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*
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* Eryn Wells <eryn@erynwells.me>
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*/
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#ifndef __BASICS_H__
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#define __BASICS_H__
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#include <iostream>
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#include "types.hh"
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/*
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* XXX: THIS SHOULD NOT BE HERE. REMOVE IT WHEN MOVING TO CHARLES NAMESPACE IS
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* DONE.
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*/
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using charles::Double;
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struct Vector3
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{
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Vector3();
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Vector3(Double x, Double y, Double z);
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Vector3 &operator=(const Vector3 &v);
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Vector3 &operator*=(const Double &rhs);
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Vector3 &operator/=(const Double &rhs);
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Vector3 &operator+=(const Vector3 &rhs);
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Vector3 &operator-=(const Vector3 &rhs);
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Vector3 operator*(const Double &rhs) const;
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Vector3 operator/(const Double &rhs) const;
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Vector3 operator+(const Vector3 &rhs) const;
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Vector3 operator-(const Vector3 &rhs) const;
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Vector3 operator-() const;
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bool operator==(const Vector3 &rhs) const;
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bool operator!=(const Vector3 &rhs) const;
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Double length2() const;
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Double length() const;
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Double dot(const Vector3 &v) const;
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Vector3 cross(const Vector3 &v) const;
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Vector3 &normalize();
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static const Vector3 Zero;
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// Unit vectors in each of the three cartesian directions.
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static const Vector3 X, Y, Z;
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Double x, y, z;
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};
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const Vector3 operator*(const Double &lhs, const Vector3 &rhs);
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std::ostream &operator<<(std::ostream &os, const Vector3 &v);
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Vector3 LinearCombination(const Double k1, const Vector3& v1,
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const Double k2, const Vector3& v2,
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const Double k3, const Vector3& v3);
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struct Ray
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{
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Ray();
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Ray(Vector3 o, Vector3 d);
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Vector3 parameterize(const float t) const;
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Vector3 origin, direction;
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};
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std::ostream &operator<<(std::ostream &os, const Ray &r);
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struct Color
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{
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Color();
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Color(const float &r, const float &g, const float &b);
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Color(const float &r, const float &g, const float &b, const float &a);
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Color &operator*=(const float &rhs);
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Color &operator/=(const float &rhs);
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Color &operator+=(const float &rhs);
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Color &operator-=(const float &rhs);
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Color operator*(const float &rhs) const;
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Color operator/(const float &rhs) const;
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Color operator+(const float &rhs) const;
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Color operator-(const float &rhs) const;
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Color &operator=(const Color &rhs);
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// These operators blend the two colors.
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Color &operator*=(const Color &rhs);
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Color &operator/=(const Color &rhs);
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Color &operator+=(const Color &rhs);
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Color &operator-=(const Color &rhs);
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Color operator*(const Color &rhs) const;
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Color operator/(const Color &rhs) const;
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Color operator+(const Color &rhs) const;
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Color operator-(const Color &rhs) const;
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static const Color Black;
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static const Color White;
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static const Color Red;
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static const Color Green;
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static const Color Blue;
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float red, green, blue, alpha;
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};
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const Color operator*(const float &lhs, const Color &rhs);
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std::ostream &operator<<(std::ostream &os, const Color &c);
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#endif
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