Codebase list ruby-fxruby / master fox-includes / FXVec3f.h
master

Tree @master (Download .tar.gz)

FXVec3f.h @master — raw · history · blame 

  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
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
/********************************************************************************
*                                                                               *
*       S i n g l e - P r e c i s i o n   3 - E l e m e n t   V e c t o r       *
*                                                                               *
*********************************************************************************
* Copyright (C) 1994,2006 by Jeroen van der Zijp.   All Rights Reserved.        *
*********************************************************************************
* This library is free software; you can redistribute it and/or                 *
* modify it under the terms of the GNU Lesser General Public                    *
* License as published by the Free Software Foundation; either                  *
* version 2.1 of the License, or (at your option) any later version.            *
*                                                                               *
* This library is distributed in the hope that it will be useful,               *
* but WITHOUT ANY WARRANTY; without even the implied warranty of                *
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU             *
* Lesser General Public License for more details.                               *
*                                                                               *
* You should have received a copy of the GNU Lesser General Public              *
* License along with this library; if not, write to the Free Software           *
* Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA.    *
*********************************************************************************
* $Id: FXVec3f.h 2346 2006-02-14 03:26:11Z lyle $                           *
********************************************************************************/
#ifndef FXVEC3F_H
#define FXVEC3F_H


namespace FX {


class FXMat3f;
class FXMat4f;


/// Single-precision 3-element vector
class FXAPI FXVec3f {
public:
  FXfloat x;
  FXfloat y;
  FXfloat z;
public:

  /// Default constructor
  FXVec3f(){}

  /// Initialize from another vector
  FXVec3f(const FXVec3f& v){x=v.x;y=v.y;z=v.z;}

  /// Initialize from array of floats
  FXVec3f(const FXfloat v[]){x=v[0];y=v[1];z=v[2];}

  /// Initialize from components
  FXVec3f(FXfloat xx,FXfloat yy,FXfloat zz=1.0f){x=xx;y=yy;z=zz;}

  /// Initialize with color
  FXVec3f(FXColor color);

  /// Return a non-const reference to the ith element
  FXfloat& operator[](FXint i){return (&x)[i];}

  /// Return a const reference to the ith element
  const FXfloat& operator[](FXint i) const {return (&x)[i];}

  /// Assign color
  FXVec3f& operator=(FXColor color);

  /// Assignment
  FXVec3f& operator=(const FXVec3f& v){x=v.x;y=v.y;z=v.z;return *this;}

  /// Assignment from array of floats
  FXVec3f& operator=(const FXfloat v[]){x=v[0];y=v[1];z=v[2];return *this;}

  /// Set value from another vector
  FXVec3f& set(const FXVec3f& v){x=v.x;y=v.y;z=v.z;return *this;}

  /// Set value from array of floats
  FXVec3f& set(const FXfloat v[]){x=v[0];y=v[1];z=v[2];return *this;}

  /// Set value from components
  FXVec3f& set(FXfloat xx,FXfloat yy,FXfloat zz){x=xx;y=yy;z=zz;return *this;}

  /// Assigning operators
  FXVec3f& operator*=(FXfloat n){x*=n;y*=n;z*=n;return *this;}
  FXVec3f& operator/=(FXfloat n){x/=n;y/=n;z/=n;return *this;}
  FXVec3f& operator+=(const FXVec3f& v){x+=v.x;y+=v.y;z+=v.z;return *this;}
  FXVec3f& operator-=(const FXVec3f& v){x-=v.x;y-=v.y;z-=v.z;return *this;}

  /// Conversions
  operator FXfloat*(){return &x;}
  operator const FXfloat*() const {return &x;}
  operator FXVec2f&(){return *reinterpret_cast<FXVec2f*>(this);}
  operator const FXVec2f&() const {return *reinterpret_cast<const FXVec2f*>(this);}

  /// Convert to color
  operator FXColor() const;

  /// Unary
  FXVec3f operator+() const { return *this; }
  FXVec3f operator-() const { return FXVec3f(-x,-y,-z); }

  /// Vector and vector
  FXVec3f operator+(const FXVec3f& v) const { return FXVec3f(x+v.x,y+v.y,z+v.z); }
  FXVec3f operator-(const FXVec3f& v) const { return FXVec3f(x-v.x,y-v.y,z-v.z); }

  /// Vector and matrix
  FXVec3f operator*(const FXMat3f& m) const;
  FXVec3f operator*(const FXMat4f& m) const;

  /// Scaling
  friend inline FXVec3f operator*(const FXVec3f& a,FXfloat n);
  friend inline FXVec3f operator*(FXfloat n,const FXVec3f& a);
  friend inline FXVec3f operator/(const FXVec3f& a,FXfloat n);
  friend inline FXVec3f operator/(FXfloat n,const FXVec3f& a);

  /// Dot product
  FXfloat operator*(const FXVec3f& v) const { return x*v.x+y*v.y+z*v.z; }

  /// Cross product
  FXVec3f operator^(const FXVec3f& v) const { return FXVec3f(y*v.z-z*v.y, z*v.x-x*v.z, x*v.y-y*v.x); }

  /// Test if zero
  bool operator!() const { return x==0.0f && y==0.0f && z==0.0f; }

  /// Equality tests
  bool operator==(const FXVec3f& v) const { return x==v.x && y==v.y && z==v.z; }
  bool operator!=(const FXVec3f& v) const { return x!=v.x || y!=v.y || z!=v.z; }

  friend inline bool operator==(const FXVec3f& a,FXfloat n);
  friend inline bool operator!=(const FXVec3f& a,FXfloat n);
  friend inline bool operator==(FXfloat n,const FXVec3f& a);
  friend inline bool operator!=(FXfloat n,const FXVec3f& a);

  /// Inequality tests
  bool operator<(const FXVec3f& v) const { return x<v.x && y<v.y && z<v.z; }
  bool operator<=(const FXVec3f& v) const { return x<=v.x && y<=v.y && z<=v.z; }
  bool operator>(const FXVec3f& v) const { return x>v.x && y>v.y && z>v.z; }
  bool operator>=(const FXVec3f& v) const { return x>=v.x && y>=v.y && z>=v.z; }

  friend inline bool operator<(const FXVec3f& a,FXfloat n);
  friend inline bool operator<=(const FXVec3f& a,FXfloat n);
  friend inline bool operator>(const FXVec3f& a,FXfloat n);
  friend inline bool operator>=(const FXVec3f& a,FXfloat n);

  friend inline bool operator<(FXfloat n,const FXVec3f& a);
  friend inline bool operator<=(FXfloat n,const FXVec3f& a);
  friend inline bool operator>(FXfloat n,const FXVec3f& a);
  friend inline bool operator>=(FXfloat n,const FXVec3f& a);

  /// Length and square of length
  FXfloat length2() const { return x*x+y*y+z*z; }
  FXfloat length() const { return sqrtf(length2()); }

  /// Clamp values of vector between limits
  FXVec3f& clamp(FXfloat lo,FXfloat hi){x=FXCLAMP(lo,x,hi);y=FXCLAMP(lo,y,hi);z=FXCLAMP(lo,z,hi);return *this;}

  /// Lowest or highest components
  friend inline FXVec3f lo(const FXVec3f& a,const FXVec3f& b);
  friend inline FXVec3f hi(const FXVec3f& a,const FXVec3f& b);

  /// Compute normal from three points a,b,c
  friend FXAPI FXVec3f normal(const FXVec3f& a,const FXVec3f& b,const FXVec3f& c);

  /// Compute approximate normal from four points a,b,c,d
  friend FXAPI FXVec3f normal(const FXVec3f& a,const FXVec3f& b,const FXVec3f& c,const FXVec3f& d);

  /// Normalize vector
  friend FXAPI FXVec3f normalize(const FXVec3f& v);

  /// Save vector to a stream
  friend FXAPI FXStream& operator<<(FXStream& store,const FXVec3f& v);

  /// Load vector from a stream
  friend FXAPI FXStream& operator>>(FXStream& store,FXVec3f& v);
  };


inline FXVec3f operator*(const FXVec3f& a,FXfloat n){return FXVec3f(a.x*n,a.y*n,a.z*n);}
inline FXVec3f operator*(FXfloat n,const FXVec3f& a){return FXVec3f(n*a.x,n*a.y,n*a.z);}
inline FXVec3f operator/(const FXVec3f& a,FXfloat n){return FXVec3f(a.x/n,a.y/n,a.z/n);}
inline FXVec3f operator/(FXfloat n,const FXVec3f& a){return FXVec3f(n/a.x,n/a.y,n/a.z);}

inline bool operator==(const FXVec3f& a,FXfloat n){return a.x==n && a.y==n && a.z==n;}
inline bool operator!=(const FXVec3f& a,FXfloat n){return a.x!=n || a.y!=n || a.z!=n;}
inline bool operator==(FXfloat n,const FXVec3f& a){return n==a.x && n==a.y && n==a.z;}
inline bool operator!=(FXfloat n,const FXVec3f& a){return n!=a.x || n!=a.y || n!=a.z;}

inline bool operator<(const FXVec3f& a,FXfloat n){return a.x<n && a.y<n && a.z<n;}
inline bool operator<=(const FXVec3f& a,FXfloat n){return a.x<=n && a.y<=n && a.z<=n;}
inline bool operator>(const FXVec3f& a,FXfloat n){return a.x>n && a.y>n && a.z>n;}
inline bool operator>=(const FXVec3f& a,FXfloat n){return a.x>=n && a.y>=n && a.z>=n;}

inline bool operator<(FXfloat n,const FXVec3f& a){return n<a.x && n<a.y && n<a.z;}
inline bool operator<=(FXfloat n,const FXVec3f& a){return n<=a.x && n<=a.y && n<=a.z;}
inline bool operator>(FXfloat n,const FXVec3f& a){return n>a.x && n>a.y && n>a.z;}
inline bool operator>=(FXfloat n,const FXVec3f& a){return n>=a.x && n>=a.y && n>=a.z;}

inline FXVec3f lo(const FXVec3f& a,const FXVec3f& b){return FXVec3f(FXMIN(a.x,b.x),FXMIN(a.y,b.y),FXMIN(a.z,b.z));}
inline FXVec3f hi(const FXVec3f& a,const FXVec3f& b){return FXVec3f(FXMAX(a.x,b.x),FXMAX(a.y,b.y),FXMAX(a.z,b.z));}

extern FXAPI FXVec3f normal(const FXVec3f& a,const FXVec3f& b,const FXVec3f& c);
extern FXAPI FXVec3f normal(const FXVec3f& a,const FXVec3f& b,const FXVec3f& c,const FXVec3f& d);

extern FXAPI FXVec3f normalize(const FXVec3f& v);

extern FXAPI FXStream& operator<<(FXStream& store,const FXVec3f& v);
extern FXAPI FXStream& operator>>(FXStream& store,FXVec3f& v);

}

#endif