Simple Vector Library 1.5 http://www.cs.cmu.edu/~ajw/doc/svl.html
Vec4.h@1:e25ff4b06ed2, 2016-01-05 (annotated)
- Committer:
- BartJanssens
- Date:
- Tue Jan 05 13:37:50 2016 +0000
- Revision:
- 1:e25ff4b06ed2
- Parent:
- 0:785cff1e5a7c
fixed va_list bug
Who changed what in which revision?
User | Revision | Line number | New contents of line |
---|---|---|---|
BartJanssens | 0:785cff1e5a7c | 1 | /* |
BartJanssens | 0:785cff1e5a7c | 2 | File: Vec4.h |
BartJanssens | 0:785cff1e5a7c | 3 | |
BartJanssens | 0:785cff1e5a7c | 4 | Function: Defines a length-4 vector. |
BartJanssens | 0:785cff1e5a7c | 5 | |
BartJanssens | 0:785cff1e5a7c | 6 | Author(s): Andrew Willmott |
BartJanssens | 0:785cff1e5a7c | 7 | |
BartJanssens | 0:785cff1e5a7c | 8 | Copyright: (c) 1995-2001, Andrew Willmott |
BartJanssens | 0:785cff1e5a7c | 9 | */ |
BartJanssens | 0:785cff1e5a7c | 10 | |
BartJanssens | 0:785cff1e5a7c | 11 | #ifndef __Vec4__ |
BartJanssens | 0:785cff1e5a7c | 12 | #define __Vec4__ |
BartJanssens | 0:785cff1e5a7c | 13 | |
BartJanssens | 0:785cff1e5a7c | 14 | #include "Vec3.h" |
BartJanssens | 0:785cff1e5a7c | 15 | |
BartJanssens | 0:785cff1e5a7c | 16 | |
BartJanssens | 0:785cff1e5a7c | 17 | // --- Vec4 Class ------------------------------------------------------------- |
BartJanssens | 0:785cff1e5a7c | 18 | |
BartJanssens | 0:785cff1e5a7c | 19 | class Vec4 |
BartJanssens | 0:785cff1e5a7c | 20 | { |
BartJanssens | 0:785cff1e5a7c | 21 | public: |
BartJanssens | 0:785cff1e5a7c | 22 | |
BartJanssens | 0:785cff1e5a7c | 23 | // Constructors |
BartJanssens | 0:785cff1e5a7c | 24 | |
BartJanssens | 0:785cff1e5a7c | 25 | Vec4(); |
BartJanssens | 0:785cff1e5a7c | 26 | Vec4(Real x, Real y, Real z, Real w); // [x, y, z, w] |
BartJanssens | 0:785cff1e5a7c | 27 | Vec4(const Vec4 &v); // Copy constructor |
BartJanssens | 0:785cff1e5a7c | 28 | Vec4(const Vec3 &v, Real w); // Hom. 3D vector |
BartJanssens | 0:785cff1e5a7c | 29 | Vec4(ZeroOrOne k); |
BartJanssens | 0:785cff1e5a7c | 30 | Vec4(Axis k); |
BartJanssens | 0:785cff1e5a7c | 31 | |
BartJanssens | 0:785cff1e5a7c | 32 | // Accessor functions |
BartJanssens | 0:785cff1e5a7c | 33 | |
BartJanssens | 0:785cff1e5a7c | 34 | Int Elts() const { return(4); }; |
BartJanssens | 0:785cff1e5a7c | 35 | |
BartJanssens | 0:785cff1e5a7c | 36 | Real &operator [] (Int i); |
BartJanssens | 0:785cff1e5a7c | 37 | const Real &operator [] (Int i) const; |
BartJanssens | 0:785cff1e5a7c | 38 | |
BartJanssens | 0:785cff1e5a7c | 39 | Real *Ref() const; // Return pointer to data |
BartJanssens | 0:785cff1e5a7c | 40 | |
BartJanssens | 0:785cff1e5a7c | 41 | // Assignment operators |
BartJanssens | 0:785cff1e5a7c | 42 | |
BartJanssens | 0:785cff1e5a7c | 43 | Vec4 &operator = (const Vec4 &a); |
BartJanssens | 0:785cff1e5a7c | 44 | Vec4 &operator = (ZeroOrOne k); |
BartJanssens | 0:785cff1e5a7c | 45 | Vec4 &operator = (Axis k); |
BartJanssens | 0:785cff1e5a7c | 46 | Vec4 &operator += (const Vec4 &a); |
BartJanssens | 0:785cff1e5a7c | 47 | Vec4 &operator -= (const Vec4 &a); |
BartJanssens | 0:785cff1e5a7c | 48 | Vec4 &operator *= (const Vec4 &a); |
BartJanssens | 0:785cff1e5a7c | 49 | Vec4 &operator *= (Real s); |
BartJanssens | 0:785cff1e5a7c | 50 | Vec4 &operator /= (const Vec4 &a); |
BartJanssens | 0:785cff1e5a7c | 51 | Vec4 &operator /= (Real s); |
BartJanssens | 0:785cff1e5a7c | 52 | |
BartJanssens | 0:785cff1e5a7c | 53 | // Comparison operators |
BartJanssens | 0:785cff1e5a7c | 54 | |
BartJanssens | 0:785cff1e5a7c | 55 | Bool operator == (const Vec4 &a) const; // v == a ? |
BartJanssens | 0:785cff1e5a7c | 56 | Bool operator != (const Vec4 &a) const; // v != a ? |
BartJanssens | 0:785cff1e5a7c | 57 | |
BartJanssens | 0:785cff1e5a7c | 58 | // Arithmetic operators |
BartJanssens | 0:785cff1e5a7c | 59 | |
BartJanssens | 0:785cff1e5a7c | 60 | Vec4 operator + (const Vec4 &a) const; // v + a |
BartJanssens | 0:785cff1e5a7c | 61 | Vec4 operator - (const Vec4 &a) const; // v - a |
BartJanssens | 0:785cff1e5a7c | 62 | Vec4 operator - () const; // -v |
BartJanssens | 0:785cff1e5a7c | 63 | Vec4 operator * (const Vec4 &a) const; // v * a (vx * ax, ...) |
BartJanssens | 0:785cff1e5a7c | 64 | Vec4 operator * (Real s) const; // v * s |
BartJanssens | 0:785cff1e5a7c | 65 | Vec4 operator / (const Vec4 &a) const; // v / a (vx / ax, ...) |
BartJanssens | 0:785cff1e5a7c | 66 | Vec4 operator / (Real s) const; // v / s |
BartJanssens | 0:785cff1e5a7c | 67 | |
BartJanssens | 0:785cff1e5a7c | 68 | |
BartJanssens | 0:785cff1e5a7c | 69 | // Initialisers |
BartJanssens | 0:785cff1e5a7c | 70 | |
BartJanssens | 0:785cff1e5a7c | 71 | Vec4 &MakeZero(); // Zero vector |
BartJanssens | 0:785cff1e5a7c | 72 | Vec4 &MakeUnit(Int i, Real k = vl_one); // kI[i] |
BartJanssens | 0:785cff1e5a7c | 73 | Vec4 &MakeBlock(Real k = vl_one); // All-k vector |
BartJanssens | 0:785cff1e5a7c | 74 | |
BartJanssens | 0:785cff1e5a7c | 75 | Vec4 &Normalise(); // normalise vector |
BartJanssens | 0:785cff1e5a7c | 76 | |
BartJanssens | 0:785cff1e5a7c | 77 | // Private... |
BartJanssens | 0:785cff1e5a7c | 78 | |
BartJanssens | 0:785cff1e5a7c | 79 | protected: |
BartJanssens | 0:785cff1e5a7c | 80 | |
BartJanssens | 0:785cff1e5a7c | 81 | Real elt[4]; |
BartJanssens | 0:785cff1e5a7c | 82 | }; |
BartJanssens | 0:785cff1e5a7c | 83 | |
BartJanssens | 0:785cff1e5a7c | 84 | |
BartJanssens | 0:785cff1e5a7c | 85 | // --- Vec operators ---------------------------------------------------------- |
BartJanssens | 0:785cff1e5a7c | 86 | |
BartJanssens | 0:785cff1e5a7c | 87 | inline Vec4 operator * (Real s, const Vec4 &v); // Left mult. by s |
BartJanssens | 0:785cff1e5a7c | 88 | inline Real dot(const Vec4 &a, const Vec4 &b); // v . a |
BartJanssens | 0:785cff1e5a7c | 89 | inline Real len(const Vec4 &v); // || v || |
BartJanssens | 0:785cff1e5a7c | 90 | inline Real sqrlen(const Vec4 &v); // v . v |
BartJanssens | 0:785cff1e5a7c | 91 | inline Vec4 norm(const Vec4 &v); // v / || v || |
BartJanssens | 0:785cff1e5a7c | 92 | inline Void normalise(Vec4 &v); // v = norm(v) |
BartJanssens | 0:785cff1e5a7c | 93 | Vec4 cross(const Vec4 &a, const Vec4 &b, const Vec4 &c); |
BartJanssens | 0:785cff1e5a7c | 94 | // 4D cross prod. |
BartJanssens | 0:785cff1e5a7c | 95 | Vec3 proj(const Vec4 &v); // hom. projection |
BartJanssens | 0:785cff1e5a7c | 96 | |
BartJanssens | 0:785cff1e5a7c | 97 | //std::ostream &operator << (std::ostream &s, const Vec4 &v); |
BartJanssens | 0:785cff1e5a7c | 98 | //std::istream &operator >> (std::istream &s, Vec4 &v); |
BartJanssens | 0:785cff1e5a7c | 99 | |
BartJanssens | 0:785cff1e5a7c | 100 | inline void printVec4(const Vec4 &v); |
BartJanssens | 0:785cff1e5a7c | 101 | |
BartJanssens | 0:785cff1e5a7c | 102 | |
BartJanssens | 0:785cff1e5a7c | 103 | // --- Inlines ---------------------------------------------------------------- |
BartJanssens | 0:785cff1e5a7c | 104 | |
BartJanssens | 0:785cff1e5a7c | 105 | inline Real &Vec4::operator [] (Int i) |
BartJanssens | 0:785cff1e5a7c | 106 | { |
BartJanssens | 0:785cff1e5a7c | 107 | CheckRange(i, 0, 4, "(Vec4::[i]) index out of range"); |
BartJanssens | 0:785cff1e5a7c | 108 | return(elt[i]); |
BartJanssens | 0:785cff1e5a7c | 109 | } |
BartJanssens | 0:785cff1e5a7c | 110 | |
BartJanssens | 0:785cff1e5a7c | 111 | inline const Real &Vec4::operator [] (Int i) const |
BartJanssens | 0:785cff1e5a7c | 112 | { |
BartJanssens | 0:785cff1e5a7c | 113 | CheckRange(i, 0, 4, "(Vec4::[i]) index out of range"); |
BartJanssens | 0:785cff1e5a7c | 114 | return(elt[i]); |
BartJanssens | 0:785cff1e5a7c | 115 | } |
BartJanssens | 0:785cff1e5a7c | 116 | |
BartJanssens | 0:785cff1e5a7c | 117 | |
BartJanssens | 0:785cff1e5a7c | 118 | inline Vec4::Vec4() |
BartJanssens | 0:785cff1e5a7c | 119 | { |
BartJanssens | 0:785cff1e5a7c | 120 | } |
BartJanssens | 0:785cff1e5a7c | 121 | |
BartJanssens | 0:785cff1e5a7c | 122 | inline Vec4::Vec4(Real x, Real y, Real z, Real w) |
BartJanssens | 0:785cff1e5a7c | 123 | { |
BartJanssens | 0:785cff1e5a7c | 124 | elt[0] = x; |
BartJanssens | 0:785cff1e5a7c | 125 | elt[1] = y; |
BartJanssens | 0:785cff1e5a7c | 126 | elt[2] = z; |
BartJanssens | 0:785cff1e5a7c | 127 | elt[3] = w; |
BartJanssens | 0:785cff1e5a7c | 128 | } |
BartJanssens | 0:785cff1e5a7c | 129 | |
BartJanssens | 0:785cff1e5a7c | 130 | inline Vec4::Vec4(const Vec4 &v) |
BartJanssens | 0:785cff1e5a7c | 131 | { |
BartJanssens | 0:785cff1e5a7c | 132 | elt[0] = v[0]; |
BartJanssens | 0:785cff1e5a7c | 133 | elt[1] = v[1]; |
BartJanssens | 0:785cff1e5a7c | 134 | elt[2] = v[2]; |
BartJanssens | 0:785cff1e5a7c | 135 | elt[3] = v[3]; |
BartJanssens | 0:785cff1e5a7c | 136 | } |
BartJanssens | 0:785cff1e5a7c | 137 | |
BartJanssens | 0:785cff1e5a7c | 138 | inline Vec4::Vec4(const Vec3 &v, Real w) |
BartJanssens | 0:785cff1e5a7c | 139 | { |
BartJanssens | 0:785cff1e5a7c | 140 | elt[0] = v[0]; |
BartJanssens | 0:785cff1e5a7c | 141 | elt[1] = v[1]; |
BartJanssens | 0:785cff1e5a7c | 142 | elt[2] = v[2]; |
BartJanssens | 0:785cff1e5a7c | 143 | elt[3] = w; |
BartJanssens | 0:785cff1e5a7c | 144 | } |
BartJanssens | 0:785cff1e5a7c | 145 | |
BartJanssens | 0:785cff1e5a7c | 146 | inline Real *Vec4::Ref() const |
BartJanssens | 0:785cff1e5a7c | 147 | { |
BartJanssens | 0:785cff1e5a7c | 148 | return((Real *) elt); |
BartJanssens | 0:785cff1e5a7c | 149 | } |
BartJanssens | 0:785cff1e5a7c | 150 | |
BartJanssens | 0:785cff1e5a7c | 151 | inline Vec4 &Vec4::operator = (const Vec4 &v) |
BartJanssens | 0:785cff1e5a7c | 152 | { |
BartJanssens | 0:785cff1e5a7c | 153 | elt[0] = v[0]; |
BartJanssens | 0:785cff1e5a7c | 154 | elt[1] = v[1]; |
BartJanssens | 0:785cff1e5a7c | 155 | elt[2] = v[2]; |
BartJanssens | 0:785cff1e5a7c | 156 | elt[3] = v[3]; |
BartJanssens | 0:785cff1e5a7c | 157 | |
BartJanssens | 0:785cff1e5a7c | 158 | return(SELF); |
BartJanssens | 0:785cff1e5a7c | 159 | } |
BartJanssens | 0:785cff1e5a7c | 160 | |
BartJanssens | 0:785cff1e5a7c | 161 | inline Vec4 &Vec4::operator += (const Vec4 &v) |
BartJanssens | 0:785cff1e5a7c | 162 | { |
BartJanssens | 0:785cff1e5a7c | 163 | elt[0] += v[0]; |
BartJanssens | 0:785cff1e5a7c | 164 | elt[1] += v[1]; |
BartJanssens | 0:785cff1e5a7c | 165 | elt[2] += v[2]; |
BartJanssens | 0:785cff1e5a7c | 166 | elt[3] += v[3]; |
BartJanssens | 0:785cff1e5a7c | 167 | |
BartJanssens | 0:785cff1e5a7c | 168 | return(SELF); |
BartJanssens | 0:785cff1e5a7c | 169 | } |
BartJanssens | 0:785cff1e5a7c | 170 | |
BartJanssens | 0:785cff1e5a7c | 171 | inline Vec4 &Vec4::operator -= (const Vec4 &v) |
BartJanssens | 0:785cff1e5a7c | 172 | { |
BartJanssens | 0:785cff1e5a7c | 173 | elt[0] -= v[0]; |
BartJanssens | 0:785cff1e5a7c | 174 | elt[1] -= v[1]; |
BartJanssens | 0:785cff1e5a7c | 175 | elt[2] -= v[2]; |
BartJanssens | 0:785cff1e5a7c | 176 | elt[3] -= v[3]; |
BartJanssens | 0:785cff1e5a7c | 177 | |
BartJanssens | 0:785cff1e5a7c | 178 | return(SELF); |
BartJanssens | 0:785cff1e5a7c | 179 | } |
BartJanssens | 0:785cff1e5a7c | 180 | |
BartJanssens | 0:785cff1e5a7c | 181 | inline Vec4 &Vec4::operator *= (const Vec4 &v) |
BartJanssens | 0:785cff1e5a7c | 182 | { |
BartJanssens | 0:785cff1e5a7c | 183 | elt[0] *= v[0]; |
BartJanssens | 0:785cff1e5a7c | 184 | elt[1] *= v[1]; |
BartJanssens | 0:785cff1e5a7c | 185 | elt[2] *= v[2]; |
BartJanssens | 0:785cff1e5a7c | 186 | elt[3] *= v[3]; |
BartJanssens | 0:785cff1e5a7c | 187 | |
BartJanssens | 0:785cff1e5a7c | 188 | return(SELF); |
BartJanssens | 0:785cff1e5a7c | 189 | } |
BartJanssens | 0:785cff1e5a7c | 190 | |
BartJanssens | 0:785cff1e5a7c | 191 | inline Vec4 &Vec4::operator *= (Real s) |
BartJanssens | 0:785cff1e5a7c | 192 | { |
BartJanssens | 0:785cff1e5a7c | 193 | elt[0] *= s; |
BartJanssens | 0:785cff1e5a7c | 194 | elt[1] *= s; |
BartJanssens | 0:785cff1e5a7c | 195 | elt[2] *= s; |
BartJanssens | 0:785cff1e5a7c | 196 | elt[3] *= s; |
BartJanssens | 0:785cff1e5a7c | 197 | |
BartJanssens | 0:785cff1e5a7c | 198 | return(SELF); |
BartJanssens | 0:785cff1e5a7c | 199 | } |
BartJanssens | 0:785cff1e5a7c | 200 | |
BartJanssens | 0:785cff1e5a7c | 201 | inline Vec4 &Vec4::operator /= (const Vec4 &v) |
BartJanssens | 0:785cff1e5a7c | 202 | { |
BartJanssens | 0:785cff1e5a7c | 203 | elt[0] /= v[0]; |
BartJanssens | 0:785cff1e5a7c | 204 | elt[1] /= v[1]; |
BartJanssens | 0:785cff1e5a7c | 205 | elt[2] /= v[2]; |
BartJanssens | 0:785cff1e5a7c | 206 | elt[3] /= v[3]; |
BartJanssens | 0:785cff1e5a7c | 207 | |
BartJanssens | 0:785cff1e5a7c | 208 | return(SELF); |
BartJanssens | 0:785cff1e5a7c | 209 | } |
BartJanssens | 0:785cff1e5a7c | 210 | |
BartJanssens | 0:785cff1e5a7c | 211 | inline Vec4 &Vec4::operator /= (Real s) |
BartJanssens | 0:785cff1e5a7c | 212 | { |
BartJanssens | 0:785cff1e5a7c | 213 | elt[0] /= s; |
BartJanssens | 0:785cff1e5a7c | 214 | elt[1] /= s; |
BartJanssens | 0:785cff1e5a7c | 215 | elt[2] /= s; |
BartJanssens | 0:785cff1e5a7c | 216 | elt[3] /= s; |
BartJanssens | 0:785cff1e5a7c | 217 | |
BartJanssens | 0:785cff1e5a7c | 218 | return(SELF); |
BartJanssens | 0:785cff1e5a7c | 219 | } |
BartJanssens | 0:785cff1e5a7c | 220 | |
BartJanssens | 0:785cff1e5a7c | 221 | |
BartJanssens | 0:785cff1e5a7c | 222 | inline Vec4 Vec4::operator + (const Vec4 &a) const |
BartJanssens | 0:785cff1e5a7c | 223 | { |
BartJanssens | 0:785cff1e5a7c | 224 | Vec4 result; |
BartJanssens | 0:785cff1e5a7c | 225 | |
BartJanssens | 0:785cff1e5a7c | 226 | result[0] = elt[0] + a[0]; |
BartJanssens | 0:785cff1e5a7c | 227 | result[1] = elt[1] + a[1]; |
BartJanssens | 0:785cff1e5a7c | 228 | result[2] = elt[2] + a[2]; |
BartJanssens | 0:785cff1e5a7c | 229 | result[3] = elt[3] + a[3]; |
BartJanssens | 0:785cff1e5a7c | 230 | |
BartJanssens | 0:785cff1e5a7c | 231 | return(result); |
BartJanssens | 0:785cff1e5a7c | 232 | } |
BartJanssens | 0:785cff1e5a7c | 233 | |
BartJanssens | 0:785cff1e5a7c | 234 | inline Vec4 Vec4::operator - (const Vec4 &a) const |
BartJanssens | 0:785cff1e5a7c | 235 | { |
BartJanssens | 0:785cff1e5a7c | 236 | Vec4 result; |
BartJanssens | 0:785cff1e5a7c | 237 | |
BartJanssens | 0:785cff1e5a7c | 238 | result[0] = elt[0] - a[0]; |
BartJanssens | 0:785cff1e5a7c | 239 | result[1] = elt[1] - a[1]; |
BartJanssens | 0:785cff1e5a7c | 240 | result[2] = elt[2] - a[2]; |
BartJanssens | 0:785cff1e5a7c | 241 | result[3] = elt[3] - a[3]; |
BartJanssens | 0:785cff1e5a7c | 242 | |
BartJanssens | 0:785cff1e5a7c | 243 | return(result); |
BartJanssens | 0:785cff1e5a7c | 244 | } |
BartJanssens | 0:785cff1e5a7c | 245 | |
BartJanssens | 0:785cff1e5a7c | 246 | inline Vec4 Vec4::operator - () const |
BartJanssens | 0:785cff1e5a7c | 247 | { |
BartJanssens | 0:785cff1e5a7c | 248 | Vec4 result; |
BartJanssens | 0:785cff1e5a7c | 249 | |
BartJanssens | 0:785cff1e5a7c | 250 | result[0] = -elt[0]; |
BartJanssens | 0:785cff1e5a7c | 251 | result[1] = -elt[1]; |
BartJanssens | 0:785cff1e5a7c | 252 | result[2] = -elt[2]; |
BartJanssens | 0:785cff1e5a7c | 253 | result[3] = -elt[3]; |
BartJanssens | 0:785cff1e5a7c | 254 | |
BartJanssens | 0:785cff1e5a7c | 255 | return(result); |
BartJanssens | 0:785cff1e5a7c | 256 | } |
BartJanssens | 0:785cff1e5a7c | 257 | |
BartJanssens | 0:785cff1e5a7c | 258 | inline Vec4 Vec4::operator * (const Vec4 &a) const |
BartJanssens | 0:785cff1e5a7c | 259 | { |
BartJanssens | 0:785cff1e5a7c | 260 | Vec4 result; |
BartJanssens | 0:785cff1e5a7c | 261 | |
BartJanssens | 0:785cff1e5a7c | 262 | result[0] = elt[0] * a[0]; |
BartJanssens | 0:785cff1e5a7c | 263 | result[1] = elt[1] * a[1]; |
BartJanssens | 0:785cff1e5a7c | 264 | result[2] = elt[2] * a[2]; |
BartJanssens | 0:785cff1e5a7c | 265 | result[3] = elt[3] * a[3]; |
BartJanssens | 0:785cff1e5a7c | 266 | |
BartJanssens | 0:785cff1e5a7c | 267 | return(result); |
BartJanssens | 0:785cff1e5a7c | 268 | } |
BartJanssens | 0:785cff1e5a7c | 269 | |
BartJanssens | 0:785cff1e5a7c | 270 | inline Vec4 Vec4::operator * (Real s) const |
BartJanssens | 0:785cff1e5a7c | 271 | { |
BartJanssens | 0:785cff1e5a7c | 272 | Vec4 result; |
BartJanssens | 0:785cff1e5a7c | 273 | |
BartJanssens | 0:785cff1e5a7c | 274 | result[0] = elt[0] * s; |
BartJanssens | 0:785cff1e5a7c | 275 | result[1] = elt[1] * s; |
BartJanssens | 0:785cff1e5a7c | 276 | result[2] = elt[2] * s; |
BartJanssens | 0:785cff1e5a7c | 277 | result[3] = elt[3] * s; |
BartJanssens | 0:785cff1e5a7c | 278 | |
BartJanssens | 0:785cff1e5a7c | 279 | return(result); |
BartJanssens | 0:785cff1e5a7c | 280 | } |
BartJanssens | 0:785cff1e5a7c | 281 | |
BartJanssens | 0:785cff1e5a7c | 282 | inline Vec4 Vec4::operator / (const Vec4 &a) const |
BartJanssens | 0:785cff1e5a7c | 283 | { |
BartJanssens | 0:785cff1e5a7c | 284 | Vec4 result; |
BartJanssens | 0:785cff1e5a7c | 285 | |
BartJanssens | 0:785cff1e5a7c | 286 | result[0] = elt[0] / a[0]; |
BartJanssens | 0:785cff1e5a7c | 287 | result[1] = elt[1] / a[1]; |
BartJanssens | 0:785cff1e5a7c | 288 | result[2] = elt[2] / a[2]; |
BartJanssens | 0:785cff1e5a7c | 289 | result[3] = elt[3] / a[3]; |
BartJanssens | 0:785cff1e5a7c | 290 | |
BartJanssens | 0:785cff1e5a7c | 291 | return(result); |
BartJanssens | 0:785cff1e5a7c | 292 | } |
BartJanssens | 0:785cff1e5a7c | 293 | |
BartJanssens | 0:785cff1e5a7c | 294 | inline Vec4 Vec4::operator / (Real s) const |
BartJanssens | 0:785cff1e5a7c | 295 | { |
BartJanssens | 0:785cff1e5a7c | 296 | Vec4 result; |
BartJanssens | 0:785cff1e5a7c | 297 | |
BartJanssens | 0:785cff1e5a7c | 298 | result[0] = elt[0] / s; |
BartJanssens | 0:785cff1e5a7c | 299 | result[1] = elt[1] / s; |
BartJanssens | 0:785cff1e5a7c | 300 | result[2] = elt[2] / s; |
BartJanssens | 0:785cff1e5a7c | 301 | result[3] = elt[3] / s; |
BartJanssens | 0:785cff1e5a7c | 302 | |
BartJanssens | 0:785cff1e5a7c | 303 | return(result); |
BartJanssens | 0:785cff1e5a7c | 304 | } |
BartJanssens | 0:785cff1e5a7c | 305 | |
BartJanssens | 0:785cff1e5a7c | 306 | inline Vec4 operator * (Real s, const Vec4 &v) |
BartJanssens | 0:785cff1e5a7c | 307 | { |
BartJanssens | 0:785cff1e5a7c | 308 | return(v * s); |
BartJanssens | 0:785cff1e5a7c | 309 | } |
BartJanssens | 0:785cff1e5a7c | 310 | |
BartJanssens | 0:785cff1e5a7c | 311 | inline Vec4 &Vec4::MakeZero() |
BartJanssens | 0:785cff1e5a7c | 312 | { |
BartJanssens | 0:785cff1e5a7c | 313 | elt[0] = vl_zero; elt[1] = vl_zero; elt[2] = vl_zero; elt[3] = vl_zero; |
BartJanssens | 0:785cff1e5a7c | 314 | return(SELF); |
BartJanssens | 0:785cff1e5a7c | 315 | } |
BartJanssens | 0:785cff1e5a7c | 316 | |
BartJanssens | 0:785cff1e5a7c | 317 | inline Vec4 &Vec4::MakeBlock(Real k) |
BartJanssens | 0:785cff1e5a7c | 318 | { |
BartJanssens | 0:785cff1e5a7c | 319 | elt[0] = k; elt[1] = k; elt[2] = k; elt[3] = k; |
BartJanssens | 0:785cff1e5a7c | 320 | return(SELF); |
BartJanssens | 0:785cff1e5a7c | 321 | } |
BartJanssens | 0:785cff1e5a7c | 322 | |
BartJanssens | 0:785cff1e5a7c | 323 | inline Vec4 &Vec4::Normalise() |
BartJanssens | 0:785cff1e5a7c | 324 | { |
BartJanssens | 0:785cff1e5a7c | 325 | Assert(sqrlen(SELF) > 0.0, "normalising length-zero vector"); |
BartJanssens | 0:785cff1e5a7c | 326 | SELF /= len(SELF); |
BartJanssens | 0:785cff1e5a7c | 327 | return(SELF); |
BartJanssens | 0:785cff1e5a7c | 328 | } |
BartJanssens | 0:785cff1e5a7c | 329 | |
BartJanssens | 0:785cff1e5a7c | 330 | inline Vec4::Vec4(ZeroOrOne k) |
BartJanssens | 0:785cff1e5a7c | 331 | { |
BartJanssens | 0:785cff1e5a7c | 332 | MakeBlock(k); |
BartJanssens | 0:785cff1e5a7c | 333 | } |
BartJanssens | 0:785cff1e5a7c | 334 | |
BartJanssens | 0:785cff1e5a7c | 335 | inline Vec4::Vec4(Axis k) |
BartJanssens | 0:785cff1e5a7c | 336 | { |
BartJanssens | 0:785cff1e5a7c | 337 | MakeUnit(k, vl_1); |
BartJanssens | 0:785cff1e5a7c | 338 | } |
BartJanssens | 0:785cff1e5a7c | 339 | |
BartJanssens | 0:785cff1e5a7c | 340 | inline Vec4 &Vec4::operator = (ZeroOrOne k) |
BartJanssens | 0:785cff1e5a7c | 341 | { |
BartJanssens | 0:785cff1e5a7c | 342 | MakeBlock(k); |
BartJanssens | 0:785cff1e5a7c | 343 | |
BartJanssens | 0:785cff1e5a7c | 344 | return(SELF); |
BartJanssens | 0:785cff1e5a7c | 345 | } |
BartJanssens | 0:785cff1e5a7c | 346 | |
BartJanssens | 0:785cff1e5a7c | 347 | inline Vec4 &Vec4::operator = (Axis k) |
BartJanssens | 0:785cff1e5a7c | 348 | { |
BartJanssens | 0:785cff1e5a7c | 349 | MakeUnit(k, vl_1); |
BartJanssens | 0:785cff1e5a7c | 350 | |
BartJanssens | 0:785cff1e5a7c | 351 | return(SELF); |
BartJanssens | 0:785cff1e5a7c | 352 | } |
BartJanssens | 0:785cff1e5a7c | 353 | |
BartJanssens | 0:785cff1e5a7c | 354 | |
BartJanssens | 0:785cff1e5a7c | 355 | inline Real dot(const Vec4 &a, const Vec4 &b) |
BartJanssens | 0:785cff1e5a7c | 356 | { |
BartJanssens | 0:785cff1e5a7c | 357 | return(a[0] * b[0] + a[1] * b[1] + a[2] * b[2] + a[3] * b[3]); |
BartJanssens | 0:785cff1e5a7c | 358 | } |
BartJanssens | 0:785cff1e5a7c | 359 | |
BartJanssens | 0:785cff1e5a7c | 360 | inline Real len(const Vec4 &v) |
BartJanssens | 0:785cff1e5a7c | 361 | { |
BartJanssens | 0:785cff1e5a7c | 362 | return(sqrt(dot(v, v))); |
BartJanssens | 0:785cff1e5a7c | 363 | } |
BartJanssens | 0:785cff1e5a7c | 364 | |
BartJanssens | 0:785cff1e5a7c | 365 | inline Real sqrlen(const Vec4 &v) |
BartJanssens | 0:785cff1e5a7c | 366 | { |
BartJanssens | 0:785cff1e5a7c | 367 | return(dot(v, v)); |
BartJanssens | 0:785cff1e5a7c | 368 | } |
BartJanssens | 0:785cff1e5a7c | 369 | |
BartJanssens | 0:785cff1e5a7c | 370 | inline Vec4 norm(const Vec4 &v) |
BartJanssens | 0:785cff1e5a7c | 371 | { |
BartJanssens | 0:785cff1e5a7c | 372 | Assert(sqrlen(v) > 0.0, "normalising length-zero vector"); |
BartJanssens | 0:785cff1e5a7c | 373 | return(v / len(v)); |
BartJanssens | 0:785cff1e5a7c | 374 | } |
BartJanssens | 0:785cff1e5a7c | 375 | |
BartJanssens | 0:785cff1e5a7c | 376 | inline Void normalise(Vec4 &v) |
BartJanssens | 0:785cff1e5a7c | 377 | { |
BartJanssens | 0:785cff1e5a7c | 378 | v /= len(v); |
BartJanssens | 0:785cff1e5a7c | 379 | } |
BartJanssens | 0:785cff1e5a7c | 380 | |
BartJanssens | 0:785cff1e5a7c | 381 | inline void printVec4(const Vec4 &v) |
BartJanssens | 0:785cff1e5a7c | 382 | { |
BartJanssens | 0:785cff1e5a7c | 383 | printf("[%10f %10f %10f %10f]",v[0],v[1],v[2],v[3]); |
BartJanssens | 0:785cff1e5a7c | 384 | } |
BartJanssens | 0:785cff1e5a7c | 385 | |
BartJanssens | 0:785cff1e5a7c | 386 | #endif |