1 // Created by: NW,JPB,CAL
2 // Copyright (c) 1991-1999 Matra Datavision
3 // Copyright (c) 1999-2014 OPEN CASCADE SAS
5 // This file is part of Open CASCADE Technology software library.
7 // This library is free software; you can redistribute it and/or modify it under
8 // the terms of the GNU Lesser General Public License version 2.1 as published
9 // by the Free Software Foundation, with special exception defined in the file
10 // OCCT_LGPL_EXCEPTION.txt. Consult the file LICENSE_LGPL_21.txt included in OCCT
11 // distribution for complete text of the license and disclaimer of any warranty.
13 // Alternatively, this file may be used under the terms of Open CASCADE
14 // commercial license or contractual agreement.
16 // Modified 27/12/98 : FMN ; PERF: OPTIMISATION LOADER (LOPTIM)
21 //-Design Declaration des variables specifiques aux vecteurs
23 //-Warning Un vecteur est defini par ses composantes ou par
25 // Il peut etre normalise
34 #include <Graphic3d_Vector.ixx>
36 #include <Standard_Boolean.hxx>
40 //-Global data definitions
42 #define Graphic3d_Vector_MyEpsilon 0.000001
44 // -- les coordonnees du vecteur
45 // MyX : Standard_ShortReal;
46 // MyY : Standard_ShortReal;
47 // MyZ : Standard_ShortReal;
49 // -- la norme du vecteur
50 // MyNorme : Standard_ShortReal;
54 Graphic3d_Vector::Graphic3d_Vector ():
55 MyX (Standard_ShortReal (1.0)),
56 MyY (Standard_ShortReal (1.0)),
57 MyZ (Standard_ShortReal (1.0)),
58 MyNorme (Standard_ShortReal (1.0)) {
61 Graphic3d_Vector::Graphic3d_Vector (const Standard_Real AX, const Standard_Real AY, const Standard_Real AZ):
62 MyX (Standard_ShortReal (AX)),
63 MyY (Standard_ShortReal (AY)),
64 MyZ (Standard_ShortReal (AZ)),
65 MyNorme (Standard_ShortReal (Graphic3d_Vector::NormeOf (AX, AY, AZ))) {
68 Graphic3d_Vector::Graphic3d_Vector (const Graphic3d_Vertex& APoint1, const Graphic3d_Vertex& APoint2) {
70 MyX = APoint2.X() - APoint1.X();
71 MyY = APoint2.Y() - APoint1.Y();
72 MyZ = APoint2.Z() - APoint1.Z();
74 MyNorme = Standard_ShortReal (Graphic3d_Vector::NormeOf (MyX, MyY, MyZ));
82 void Graphic3d_Vector::Coord (Standard_Real& AX, Standard_Real& AY, Standard_Real& AZ) const {
84 AX = Standard_Real (MyX);
85 AY = Standard_Real (MyY);
86 AZ = Standard_Real (MyZ);
90 Standard_Real Graphic3d_Vector::X () const {
92 return Standard_Real (MyX);
96 Standard_Real Graphic3d_Vector::Y () const {
98 return Standard_Real (MyY);
102 Standard_Real Graphic3d_Vector::Z () const {
104 return Standard_Real (MyZ);
108 void Graphic3d_Vector::Normalize () {
110 if (Abs (MyNorme) <= RealEpsilon ())
111 Graphic3d_VectorError::Raise ("The norm is null");
113 if (!IsNormalized()) // CQO CTS40181
120 MyNorme = Standard_ShortReal (1.0);
124 void Graphic3d_Vector::SetCoord (const Standard_Real Xnew, const Standard_Real Ynew, const Standard_Real Znew) {
126 MyX = Standard_ShortReal (Xnew);
127 MyY = Standard_ShortReal (Ynew);
128 MyZ = Standard_ShortReal (Znew);
130 MyNorme = Standard_ShortReal (Graphic3d_Vector::NormeOf (Standard_Real (MyX), Standard_Real (MyY), Standard_Real (MyZ)));
134 void Graphic3d_Vector::SetXCoord (const Standard_Real Xnew) {
136 MyX = Standard_ShortReal (Xnew);
138 MyNorme = Standard_ShortReal (Graphic3d_Vector::NormeOf (Standard_Real (MyX), Standard_Real (MyY), Standard_Real (MyZ)));
142 void Graphic3d_Vector::SetYCoord (const Standard_Real Ynew) {
144 MyY = Standard_ShortReal (Ynew);
146 MyNorme = Standard_ShortReal (Graphic3d_Vector::NormeOf (Standard_Real (MyX), Standard_Real (MyY), Standard_Real (MyZ)));
150 void Graphic3d_Vector::SetZCoord (const Standard_Real Znew) {
152 MyZ = Standard_ShortReal (Znew);
154 MyNorme = Standard_ShortReal (Graphic3d_Vector::NormeOf (Standard_Real (MyX), Standard_Real (MyY), Standard_Real (MyZ)));
158 Standard_Boolean Graphic3d_Vector::LengthZero () const {
160 return (Abs (Standard_Real (MyNorme)) <= RealEpsilon ());
164 Standard_Boolean Graphic3d_Vector::IsNormalized () const {
166 return (Abs (Standard_Real (MyNorme) - 1.0) <=
167 Graphic3d_Vector_MyEpsilon);
171 Standard_Boolean Graphic3d_Vector::IsParallel (const Graphic3d_Vector& AV1, const Graphic3d_Vector& AV2) {
173 Standard_Real aDif1 = 0, aDif2 = 0, aDif3 = 0;
175 aDif1 = AV1.X () * AV2.Y () - AV1.Y () * AV2.X ();
176 aDif2 = AV1.X () * AV2.Z () - AV1.Z () * AV2.X ();
177 aDif3 = AV1.Y () * AV2.Z () - AV1.Z () * AV2.Y ();
179 return ( (Abs (aDif1) <= Graphic3d_Vector_MyEpsilon) &&
180 (Abs (aDif2) <= Graphic3d_Vector_MyEpsilon) &&
181 (Abs (aDif3) <= Graphic3d_Vector_MyEpsilon) );
184 Standard_Real Graphic3d_Vector::NormeOf (const Standard_Real AX, const Standard_Real AY, const Standard_Real AZ) {
186 return (Sqrt (AX*AX+AY*AY+AZ*AZ));
190 Standard_Real Graphic3d_Vector::NormeOf (const Graphic3d_Vector& AVector) {
192 Standard_Real X, Y, Z;
194 AVector.Coord(X, Y, Z);
195 return (Graphic3d_Vector::NormeOf (X, Y, Z));