Dario Sassi
109 lines
3.5 KiB
C++
109 lines
3.5 KiB
C++
//----------------------------------------------------------------------------
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// EgalTech 2013-2014
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//----------------------------------------------------------------------------
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// File : SceneGeom.cpp Data : 10.02.14 Versione : 1.5b1
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// Contenuto : Implementazione della gestione geometria della classe scena.
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//
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//
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//
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// Modifiche : 10.02.14 DS Creazione modulo.
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//
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//
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//----------------------------------------------------------------------------
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//--------------------------- Include ----------------------------------------
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#include "stdafx.h"
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#include "Scene.h"
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#include "/EgtDev/Include/EgtILogger.h"
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#include "/EgtDev/Include/EGnStringUtils.h"
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#include "/EgtDev/Include/EGkFrame3d.h"
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#include "/EgtDev/Include/EgtPointerOwner.h"
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#include "/EgtDev/Include/EGkGdbIterator.h"
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#include "/EgtDev/Include/EGkCurve.h"
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using namespace std ;
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//------------------------------ Constants -----------------------------------
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const int OGLMAT_DIM = 16 ;
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//----------------------------------------------------------------------------
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bool
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FrameToOpenGlMatrix( const Frame3d& frFrame, double Matrix[OGLMAT_DIM])
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{
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if ( frFrame.GetType() == Frame3d::ERR)
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return false ;
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Matrix[0] = frFrame.VersX().x ;
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Matrix[1] = frFrame.VersX().y ;
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Matrix[2] = frFrame.VersX().z ;
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Matrix[3] = 0 ;
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Matrix[4] = frFrame.VersY().x ;
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Matrix[5] = frFrame.VersY().y ;
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Matrix[6] = frFrame.VersY().z ;
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Matrix[7] = 0 ;
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Matrix[8] = frFrame.VersZ().x ;
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Matrix[9] = frFrame.VersZ().y ;
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Matrix[10] = frFrame.VersZ().z ;
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Matrix[11] = 0 ;
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Matrix[12] = frFrame.Orig().x ;
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Matrix[13] = frFrame.Orig().y ;
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Matrix[14] = frFrame.Orig().z ;
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Matrix[15] = 1 ;
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return true ;
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}
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//----------------------------------------------------------------------------
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bool
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Scene::DrawGroup( int nId)
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{
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// recupero il riferimento del gruppo
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Frame3d frFrame ;
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if ( ! m_pGeomDB->GetGroupFrame( nId, frFrame))
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return false ;
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// se non è identità, lo imposto nello stack delle matrici MODELVIEW di OpenGL
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bool bMatrix = ( frFrame.GetType() != Frame3d::TOP || ! frFrame.Orig().IsSmall()) ;
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if ( bMatrix) {
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glPushMatrix() ;
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double Matrix[OGLMAT_DIM] ;
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if ( FrameToOpenGlMatrix( frFrame, Matrix))
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glMultMatrixd( Matrix) ;
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}
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// creo un iteratore
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PtrOwner<IGdbIterator> pIter( CreateGdbIterator()) ;
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if ( ! ::IsValid( pIter))
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return false ;
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// scandisco il gruppo
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pIter->SetGDB( m_pGeomDB) ;
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bool bNext = pIter->GoToFirstInGroup( nId) ;
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while ( bNext) {
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int nGdbType = pIter->GetGdbType() ;
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if ( nGdbType == GDB_GEO) {
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const ICurve* pCurve ;
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// se curva, la emetto
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if ( ( pCurve = GetCurve( pIter->GetGeoObj())) != nullptr) {
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bool bFound ;
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PolyLine PL ;
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Point3d ptP ;
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pCurve->ApproxWithLines( 0.1, 5, PL) ;
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glBegin( GL_LINE_STRIP) ;
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for ( bFound = PL.GetFirstPoint( ptP) ; bFound ; bFound = PL.GetNextPoint( ptP)) {
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glVertex3f( (GLfloat)ptP.x, (GLfloat)ptP.y, (GLfloat)ptP.z) ;
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}
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glEnd() ;
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}
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}
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else if ( nGdbType == GDB_GROUP) {
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if ( ! DrawGroup( pIter->GetId()))
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return false ;
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}
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bNext = pIter->GoToNext() ;
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}
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// se necessario, ripristino lo stack delle matrici
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if ( bMatrix)
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glPopMatrix() ;
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return true ;
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}
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