normal.cc 2 KB
 LEFEBVREJP email committed Jan 14, 2017 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 ``````/* * File: normal.cc * Author: Jordan * * Created on August 9, 2012, 7:01 PM */ #include #include #include #include "radixmath/normal.hh" namespace radix { /** * Default constructor */ Normal::Normal() : x(0.0), y(0.0), z(0.0) { } /** * Constructor * @param a */ Normal::Normal(Real a) : x(a), y(a), z(a) { } /** * Constructor * @param _x * @param _y * @param _z */ Normal::Normal(Real _x, Real _y, Real _z) : x(_x), y(_y), z(_z) { } /** * Copy constructor * @param n */ Normal::Normal(const Normal& n) : x(n.x), y(n.y), z(n.z) { } /** * Copy Vector3D constructor * @param v */ Normal::Normal(const Vector3D& v) : x(v.x), y(v.y), z(v.z) { } /** * Destructor */ Normal::~Normal() { } Normal& Normal::operator=(const Normal& rhs) { if (this == &rhs) return (*this); x = rhs.x; y = rhs.y; z = rhs.z; return (*this); } Normal& Normal::operator=(const Point3D& rhs) { x = rhs.x; y = rhs.y; z = rhs.z; return (*this); } Normal& Normal::operator=(const Vector3D& rhs) { x = rhs.x; y = rhs.y; z = rhs.z; return (*this); } void Normal::normalize(void) { Real length = std::sqrt(x * x + y * y + z * z); x /= length; y /= length; z /= length; } /** * @function operator* * @brief multiplication by a matrix on the left * * a normal is transformed by multiplying it on the left by the transpose of the upper left 3 x 3 * partition of the inverse transformation matrix */ Normal operator*(const Matrix& mat, const Normal& n) { return (Normal(mat.matrix[0][0] * n.x + mat.matrix[1][0] * n.y + mat.matrix[2][0] * n.z, mat.matrix[0][1] * n.x + mat.matrix[1][1] * n.y + mat.matrix[2][1] * n.z, mat.matrix[0][2] * n.x + mat.matrix[1][2] * n.y + mat.matrix[2][2] * n.z)); } std::string Normal::toString()const { std::stringstream stream; stream<