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SbVec4f.h
00001 #ifndef COIN_SBVEC4F_H
00002 #define COIN_SBVEC4F_H
00003 
00004 /**************************************************************************\
00005  *
00006  *  This file is part of the Coin 3D visualization library.
00007  *  Copyright (C) by Kongsberg Oil & Gas Technologies.
00008  *
00009  *  This library is free software; you can redistribute it and/or
00010  *  modify it under the terms of the GNU General Public License
00011  *  ("GPL") version 2 as published by the Free Software Foundation.
00012  *  See the file LICENSE.GPL at the root directory of this source
00013  *  distribution for additional information about the GNU GPL.
00014  *
00015  *  For using Coin with software that can not be combined with the GNU
00016  *  GPL, and for taking advantage of the additional benefits of our
00017  *  support services, please contact Kongsberg Oil & Gas Technologies
00018  *  about acquiring a Coin Professional Edition License.
00019  *
00020  *  See http://www.coin3d.org/ for more information.
00021  *
00022  *  Kongsberg Oil & Gas Technologies, Bygdoy Alle 5, 0257 Oslo, NORWAY.
00023  *  http://www.sim.no/  sales@sim.no  coin-support@coin3d.org
00024  *
00025 \**************************************************************************/
00026 
00027 #include <stdio.h>
00028 
00029 #include <Inventor/SbBasic.h>
00030 #ifndef NDEBUG
00031 #include <Inventor/errors/SoDebugError.h>
00032 #endif // !NDEBUG
00033 
00034 class SbVec4d;
00035 class SbVec4b;
00036 class SbVec4s;
00037 class SbVec4i32;
00038 class SbVec3f;
00039 
00040 class COIN_DLL_API SbVec4f {
00041 public:
00042   SbVec4f(void) { }
00043   SbVec4f(const float v[4]) { vec[0] = v[0]; vec[1] = v[1]; vec[2] = v[2]; vec[3] = v[3]; }
00044   SbVec4f(float x, float y, float z, float w) { vec[0] = x; vec[1] = y; vec[2] = z; vec[3] = w; }
00045   explicit SbVec4f(const SbVec4d & v) { setValue(v); }
00046   explicit SbVec4f(const SbVec4b & v) { setValue(v); }
00047   explicit SbVec4f(const SbVec4s & v) { setValue(v); }
00048   explicit SbVec4f(const SbVec4i32 & v) { setValue(v); }
00049 
00050   SbVec4f & setValue(const float v[4]) { vec[0] = v[0]; vec[1] = v[1]; vec[2] = v[2]; vec[3] = v[3]; return *this; }
00051   SbVec4f & setValue(float x, float y, float z, float w) { vec[0] = x; vec[1] = y; vec[2] = z; vec[3] = w; return *this; }
00052   SbVec4f & setValue(const SbVec4d & v);
00053   SbVec4f & setValue(const SbVec4b & v);
00054   SbVec4f & setValue(const SbVec4s & v);
00055   SbVec4f & setValue(const SbVec4i32 & v);
00056 
00057   const float * getValue(void) const { return vec; }
00058   void getValue(float & x, float & y, float & z, float & w) const { x = vec[0]; y = vec[1]; z = vec[2]; w = vec[3]; }
00059 
00060   float & operator [] (int i) { return vec[i]; }
00061   const float & operator [] (int i) const { return vec[i]; }
00062 
00063   SbBool equals(const SbVec4f & v, float tolerance) const;
00064   float dot(const SbVec4f & v) const { return vec[0] * v[0] + vec[1] * v[1] + vec[2] * v[2] + vec[3] * v[3]; }
00065   void getReal(SbVec3f & v) const;
00066   float length(void) const;
00067   float sqrLength(void) const { return vec[0] * vec[0] + vec[1] * vec[1] + vec[2] * vec[2] + vec[3] * vec[3]; }
00068   void negate(void) { vec[0] = -vec[0]; vec[1] = -vec[1]; vec[2] = -vec[2]; vec[3] = -vec[3]; }
00069   float normalize(void);
00070 
00071   SbVec4f & operator *= (float d) { vec[0] *= d; vec[1] *= d; vec[2] *= d; vec[3] *= d; return *this; }
00072   SbVec4f & operator /= (float d) { SbDividerChk("SbVec4f::operator/=(float)", d); return operator *= (1.0f / d); }
00073   SbVec4f & operator += (const SbVec4f & v) { vec[0] += v[0]; vec[1] += v[1]; vec[2] += v[2]; vec[3] += v[3]; return *this; }
00074   SbVec4f & operator -= (const SbVec4f & v) { vec[0] -= v[0]; vec[1] -= v[1]; vec[2] -= v[2]; vec[3] -= v[3]; return *this; }
00075   SbVec4f operator - (void) const { return SbVec4f(-vec[0], -vec[1], -vec[2], -vec[3]); }
00076 
00077   void print(FILE * fp) const;
00078 
00079 protected:
00080   float vec[4];
00081 
00082 }; // SbVec4f
00083 
00084 COIN_DLL_API inline SbVec4f operator * (const SbVec4f & v, float d) {
00085   SbVec4f val(v); val *= d; return val;
00086 }
00087 
00088 COIN_DLL_API inline SbVec4f operator * (float d, const SbVec4f & v) {
00089   SbVec4f val(v); val *= d; return val;
00090 }
00091 
00092 COIN_DLL_API inline SbVec4f operator / (const SbVec4f & v, float d) {
00093   SbDividerChk("operator/(SbVec4f,float)", d);
00094   SbVec4f val(v); val /= d; return val;
00095 }
00096 
00097 COIN_DLL_API inline SbVec4f operator + (const SbVec4f & v1, const SbVec4f & v2) {
00098   SbVec4f v(v1); v += v2; return v;
00099 }
00100 
00101 COIN_DLL_API inline SbVec4f operator - (const SbVec4f & v1, const SbVec4f & v2) {
00102   SbVec4f v(v1); v -= v2; return v;
00103 }
00104 
00105 COIN_DLL_API inline int operator == (const SbVec4f & v1, const SbVec4f & v2) {
00106   return ((v1[0] == v2[0]) && (v1[1] == v2[1]) && (v1[2] == v2[2]) && (v1[3] == v2[3]));
00107 }
00108 
00109 COIN_DLL_API inline int operator != (const SbVec4f & v1, const SbVec4f & v2) {
00110   return !(v1 == v2);
00111 }
00112 
00113 #endif // !COIN_SBVEC4F_H

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