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author | Kartik K. Agaram <vc@akkartik.com> | 2021-07-16 08:09:42 -0700 |
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committer | Kartik K. Agaram <vc@akkartik.com> | 2021-07-16 08:28:56 -0700 |
commit | 44d26b77c45668c9b0c99894a4294cec004361fe (patch) | |
tree | 68a5dcd4971873efd4ce184e9bf9a531c2161813 /linux/raytracing/vec3.h | |
parent | ac45f097153afd3a89f43886e4124c5b2c26b98a (diff) | |
download | mu-44d26b77c45668c9b0c99894a4294cec004361fe.tar.gz |
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Diffstat (limited to 'linux/raytracing/vec3.h')
-rw-r--r-- | linux/raytracing/vec3.h | 102 |
1 files changed, 0 insertions, 102 deletions
diff --git a/linux/raytracing/vec3.h b/linux/raytracing/vec3.h deleted file mode 100644 index d8341d36..00000000 --- a/linux/raytracing/vec3.h +++ /dev/null @@ -1,102 +0,0 @@ -#ifndef VEC3_H -#define VEC3_H - -#include <cmath> -#include <iostream> - -using std::sqrt; - -class vec3 { - public: - vec3() : e{0,0,0} {} - vec3(float e0, float e1, float e2) : e{e0, e1, e2} {} - - float x() const { return e[0]; } - float y() const { return e[1]; } - float z() const { return e[2]; } - - vec3 operator-() const { return vec3(-e[0], -e[1], -e[2]); } - float operator[](int i) const { return e[i]; } - float& operator[](int i) { return e[i]; } - - vec3& operator+=(const vec3 &v) { - e[0] += v.e[0]; - e[1] += v.e[1]; - e[2] += v.e[2]; - return *this; - } - - vec3& operator*=(const float t) { - e[0] *= t; - e[1] *= t; - e[2] *= t; - return *this; - } - - vec3& operator/=(const float t) { - return *this *= 1/t; - } - - float length() const { - return sqrt(length_squared()); - } - - float length_squared() const { - return e[0]*e[0] + e[1]*e[1] + e[2]*e[2]; - } - - public: - float e[3]; -}; - -// Type aliases for vec3 -using point3 = vec3; // 3D point -using color = vec3; // RGB color - -// vec3 Utility Functions - -inline std::ostream& operator<<(std::ostream &out, const vec3 &v) { - return out << v.e[0] << ' ' << v.e[1] << ' ' << v.e[2]; -} - -inline vec3 operator+(const vec3 &u, const vec3 &v) { - return vec3(u.e[0] + v.e[0], u.e[1] + v.e[1], u.e[2] + v.e[2]); -} - -inline vec3 operator-(const vec3 &u, const vec3 &v) { - return vec3(u.e[0] - v.e[0], u.e[1] - v.e[1], u.e[2] - v.e[2]); -} - -inline vec3 operator*(const vec3 &u, const vec3 &v) { - return vec3(u.e[0] * v.e[0], u.e[1] * v.e[1], u.e[2] * v.e[2]); -} - -inline vec3 operator*(float t, const vec3 &v) { - return vec3(t*v.e[0], t*v.e[1], t*v.e[2]); -} - -inline vec3 operator*(const vec3 &v, float t) { - return t * v; -} - -inline vec3 operator/(vec3 v, float t) { - return (1/t) * v; -} - -inline float dot(const vec3 &u, const vec3 &v) { - return u.e[0] * v.e[0] - + u.e[1] * v.e[1] - + u.e[2] * v.e[2]; -} - -inline vec3 cross(const vec3 &u, const vec3 &v) { - return vec3(u.e[1] * v.e[2] - u.e[2] * v.e[1], - u.e[2] * v.e[0] - u.e[0] * v.e[2], - u.e[0] * v.e[1] - u.e[1] * v.e[0]); -} - -inline vec3 unit_vector(vec3 v) { - return v / v.length(); -} - -#endif |