Trab4: prm.cpp Source File

00001 /*
00002 ** ----------------------------------------------------------------
00003 ** prm.cpp  -  Primitive class.
00004 **
00005 ** ----------------------------------------------------------------
00006 */
00007 
00030 /*
00031 ** ---------------------------------------------------------------
00032 ** Global variables and symbols:
00033 */
00034 #include <stdlib.h>
00035 #include <stdio.h>
00036 #include "prm.h"
00037 
00038 /*
00039 ** ---------------------------------------------------------------
00040 ** Initialization of class variables:
00041 */
00044 Prm* Prm::prm_head = 0L;
00045 
00048 const double Prm::COORD_TOL = 0.001;
00049 
00050 /*
00051 ** ---------------------------------------------------------------
00052 ** Public constructor and destructor functions:
00053 **
00054 */
00055 /*=========================  Prm::Prm  =========================*/
00056 
00057 Prm::Prm( )
00058 {
00059  Reset( );
00060  InsertFront( );
00061 }
00062 
00063 /*=========================  Prm::Prm  =========================*/
00064 
00065 Prm::Prm( int back )
00066 {
00067  Reset( );
00068  if( !back )
00069   InsertFront( );
00070  else
00071   InsertBack( );
00072 }
00073 
00074 /*=========================  Prm::~Prm  ========================*/
00075 
00076 Prm::~Prm( )
00077 {
00078  RemoveFromList( );
00079 }
00080 
00081 /*
00082 ** ---------------------------------------------------------------
00083 ** Public class functions:
00084 **
00085 */
00086 /*=======================  Prm::DeleteList  ======================*/
00087 
00088 void Prm::DeleteList( void )
00089 {
00090  while( prm_head != NULL )
00091  {
00092   delete prm_head;
00093  }
00094 }
00095 
00096 /*==========================  Prm::First  ========================*/
00097 
00098 Prm* Prm::First( void )
00099 {
00100  return( prm_head );
00101 }
00102 
00103 /*==========================  Prm::Last  =========================*/
00104 
00105 Prm* Prm::Last( void )
00106 {
00107  if( prm_head == NULL )
00108   return( NULL );
00109 
00110  return( prm_head->prev );
00111 }
00112 
00113 /*=======================  Prm::SelectAll  =======================*/
00114 
00115 void Prm::SelectAll( )
00116 {
00117  Prm* prm;
00118 
00119  for( prm = First( ); prm != NULL; prm = prm->Next( ) )
00120  {
00121   prm->sel = 1;
00122  }
00123 }
00124 
00125 /*======================  Prm::UnselectAll  ======================*/
00126 
00127 void Prm::UnselectAll( )
00128 {
00129  Prm* prm;
00130 
00131  for( prm = First( ); prm != NULL; prm = prm->Next( ) )
00132  {
00133   prm->sel = 0;
00134  }
00135 }
00136 
00137 /*======================  Prm::GetGlobalBox  =====================*/
00138 
00139 int Prm::GetGlobalBox( double* xmin, double* xmax, 
00140                        double* ymin, double* ymax )
00141 {
00142 /*** COMPLETE HERE: 01 ***/
00143
00144
00145
00146
00147
00148
00149
00150
00151
00152
00153
00154
00155
00156
00157
00158
00159 /*** COMPLETE HERE: 01 ***/
00160 
00161  return( 1 );
00162 }
00163 
00164 /*
00165 ** ---------------------------------------------------------------
00166 ** Private general instance (object) functions
00167 ** (implemented in base class):
00168 **
00169 */
00170 /*========================  Prm::Reset  ========================*/
00171 
00172 void Prm::Reset( void )
00173 {
00174 /* Set default initial values for a primitive.
00175  */
00176  this->next = NULL;
00177  this->prev = NULL;
00178  this->type = PRM_UNDEF;
00179  this->sel = 0;
00180  this->color = 0L;
00181  this->height = 0.0;
00182 }
00183 
00184 /*======================  Prm::InsertFront  ======================*/
00185 
00186 void Prm::InsertFront( void )
00187 {
00188 /*** COMPLETE HERE: 02 ***/
00189
00190
00191
00192
00193
00194
00195
00196
00197
00198
00199
00200
00201
00202 /*** COMPLETE HERE: 02 ***/
00203 }
00204 
00205 /*======================  Prm::InsertBack  =======================*/
00206 
00207 void Prm::InsertBack( void )
00208 {
00209 /*** COMPLETE HERE: 03 ***/
00210
00211
00212
00213
00214
00215
00216
00217
00218
00219
00220
00221
00222
00223 /*** COMPLETE HERE: 03 ***/
00224 }
00225 
00226 /*=====================  Prm::RemoveFromList  ====================*/
00227 
00228 void Prm::RemoveFromList( void )
00229 {
00230 /*** COMPLETE HERE: 04 ***/
00231
00232
00233
00234
00235
00236
00237
00238
00239
00240
00241
00242
00243
00244
00245
00246 /*** COMPLETE HERE: 04 ***/
00247 }
00248 
00249 /*
00250 ** ---------------------------------------------------------------
00251 ** Public general instance (object) functions
00252 ** (implemented in base class):
00253 **
00254 */
00255 /*==========================  Prm::Next  =========================*/
00256 
00257 Prm* Prm::Next( void )
00258 {
00259  if( this == prm_head->prev )
00260   return( NULL );
00261 
00262  return( this->next );
00263 }
00264 
00265 /*========================  Prm::Previous  =======================*/
00266 
00267 Prm* Prm::Previous( void )
00268 {
00269  if( this == prm_head )
00270   return( NULL );
00271 
00272  return( this->prev );
00273 }
00274 
00275 /*=======================  Prm::MoveFront  =======================*/
00276 
00277 void Prm::MoveFront( void )
00278 {
00279 /* Handle case in which the current primitive is already at the 
00280  * beginning of list. This also considers the case of a single
00281  * primitive list.
00282  */
00283  if( this == prm_head )
00284   return;
00285 
00286 /* When we get here, there are at least two primitives in
00287  * the list and the primitive to move is not the first one.
00288  * Therefore, it is just necessary to remove from its 
00289  * current position in the list and inserts it at the beginning
00290  * of list.
00291  */
00292  this->RemoveFromList( );
00293  this->InsertFront( );
00294 }
00295 
00296 /*========================  Prm::MoveBack  =======================*/
00297 
00298 void Prm::MoveBack( void )
00299 {
00300 /* Handle case in which the current primitive is already at the 
00301  * end of list. This also considers the case of a single
00302  * primitive list.
00303  */
00304  if( this == prm_head->prev )
00305   return;
00306 
00307 /* When we get here, there are at least two primitives in
00308  * the list and the primitive to move is not the last one.
00309  * Therefore, it is just necessary to remove from its 
00310  * current position in the list and inserts it at the end
00311  * of list.
00312  */
00313  this->RemoveFromList( );
00314  this->InsertBack( );
00315 }
00316 
00317 /*========================  Prm::GetType  ========================*/
00318 
00319 Prm::Type Prm::GetType( void  )
00320 {
00321  return( this->type );
00322 }
00323 
00324 /*=========================  Prm::Select  ========================*/
00325 
00326 void Prm::Select( void )
00327 {
00328  this->sel = 1;
00329 }
00330 
00331 /*========================  Prm::Unselect  =======================*/
00332 
00333 void Prm::Unselect( void )
00334 {
00335  this->sel = 0;
00336 }
00337 
00338 /*=====================  Prm::CheckSelected  =====================*/
00339 
00340 int Prm::CheckSelected( void )
00341 {
00342  return( this->sel );
00343 }
00344 
00345 /*========================  Prm::SetColor  =======================*/
00346 
00347 void Prm::SetColor( long int color )
00348 {
00349  this->color = color;
00350 }
00351 
00352 /*========================  Prm::GetColor  =======================*/
00353 
00354 long int Prm::GetColor( void )
00355 {
00356  return( this->color );
00357 }
00358 
00359 /*========================  Prm::SetHeight  ======================*/
00360 
00361 void Prm::SetHeight( double height )
00362 {
00363  this->height = height;
00364 }
00365 
00366 /*========================  Prm::GetHeight  ======================*/
00367 
00368 double Prm::GetHeight( void )
00369 {
00370  return( this->height );
00371 }
00372