git-svn-id: svn://svn.icms.temple.edu/lammps-ro/trunk@24 f3b2605a-c512-4ea7-a41b-209d697bcdaa

lib/poems/vect3.cpp

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+/*
+ *_________________________________________________________________________*
+ *      POEMS: PARALLELIZABLE OPEN SOURCE EFFICIENT MULTIBODY SOFTWARE     *
+ *      DESCRIPTION: SEE READ-ME                                           *
+ *      FILE NAME: vect3.cpp                                               *
+ *      AUTHORS: See Author List                                           * 
+ *      GRANTS: See Grants List                                            *
+ *      COPYRIGHT: (C) 2005 by Authors as listed in Author's List          *
+ *      LICENSE: Please see License Agreement                              *
+ *      DOWNLOAD: Free at www.rpi.edu/~anderk5                             *
+ *      ADMINISTRATOR: Prof. Kurt Anderson                                 *
+ *                     Computational Dynamics Lab                          *
+ *                     Rensselaer Polytechnic Institute                    *
+ *                     110 8th St. Troy NY 12180                           * 
+ *      CONTACT:        anderk5@rpi.edu                                    *
+ *_________________________________________________________________________*/
+
+#include "vect3.h"
+
+using namespace std;
+
+Vect3::Vect3(){
+  numrows = 3; numcols = 1;
+}
+Vect3::~Vect3(){
+}
+
+Vect3::Vect3(const Vect3& A){  // copy constructor
+  numrows = 3; numcols = 1;
+
+  elements[0] = A.elements[0];
+  elements[1] = A.elements[1];
+  elements[2] = A.elements[2];
+}
+
+Vect3::Vect3(const VirtualMatrix& A){  // copy constructor
+  numrows = 3; numcols = 1;
+
+  // error check
+  if( (A.GetNumRows() != 3) || (A.GetNumCols() != 1) ){
+    cerr << "illegal matrix size" << endl;
+    exit(0);
+  }
+
+  for(int i=0;i<3;i++)
+    elements[i] = A.BasicGet(i,0);
+}
+
+double& Vect3::operator_1int (int i){ // array access
+	if(i<1 || i>3){
+		cerr << "matrix index invalid in operator ()" << endl;
+		exit(1);
+	}
+  return elements[i-1];
+}
+
+double Vect3::Get_1int(int i) const{
+  return elements[i-1];
+}
+
+void Vect3::Set_1int(int i, double value){
+  elements[i-1] = value;
+}
+
+double Vect3::BasicGet_1int(int i) const{
+  return elements[i];
+}
+
+void Vect3::BasicSet_1int(int i, double value){
+  elements[i] = value;
+}
+
+void Vect3::BasicIncrement_1int(int i, double value){
+  elements[i] += value;
+}
+
+void Vect3::Const(double value){
+  elements[0] = value;
+  elements[1] = value;
+  elements[2] = value;
+}
+
+MatrixType Vect3::GetType() const{
+  return VECT3;
+}
+
+istream& Vect3::ReadData(istream& c){  //input
+  for(int i=0;i<3;i++)
+    c >> elements[i];
+  return c;
+}
+
+ostream& Vect3::WriteData(ostream& c) const{  //output
+  for(int i=0;i<3;i++)
+    c << elements[i] << ' ';
+  return c;
+}
+
+void Vect3::AssignVM(const VirtualMatrix& A){
+  // error check
+  if( (A.GetNumRows() != 3) || (A.GetNumCols() != 1) ){
+    cerr << "illegal matrix size" << endl;
+    exit(0);
+  }
+
+  for(int i=0;i<numrows;i++)
+    elements[i] = A.BasicGet(i,0);
+}
+
+Vect3& Vect3::operator=(const Vect3& A){ // assignment operator
+  elements[0] = A.elements[0];
+  elements[1] = A.elements[1];
+  elements[2] = A.elements[2];
+  return *this;
+}
+
+Vect3& Vect3::operator=(const VirtualMatrix& A){ // overloaded =
+  // error check
+  if( (A.GetNumRows() != 3) || (A.GetNumCols() != 1) ){
+    cerr << "illegal matrix size" << endl;
+    exit(0);
+  }
+
+  for(int i=0;i<numrows;i++)
+    elements[i] = A.BasicGet(i,0);
+  return *this;
+}
+
+Vect3& Vect3::operator*=(double b){
+  elements[0] *= b;
+  elements[1] *= b;
+  elements[2] *= b;
+  return *this;
+}
+
+Vect3& Vect3::operator+=(const Vect3& A){
+  elements[0] += A.elements[0];
+  elements[1] += A.elements[1];
+  elements[2] += A.elements[2];
+  return *this;
+}
+
+Vect3& Vect3::operator-=(const Vect3& A){
+  elements[0] -= A.elements[0];
+  elements[1] -= A.elements[1];
+  elements[2] -= A.elements[2];
+  return *this;
+}