Dario Sassi
308 lines
9.5 KiB
C++
308 lines
9.5 KiB
C++
//----------------------------------------------------------------------------
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// EgalTech 2014-2014
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//----------------------------------------------------------------------------
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// File : ObjNewGraphics.cpp Data : 10.02.14 Versione : 1.5b1
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// Contenuto : Implementazione della classe grafica di un oggetto geometrico.
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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 "ObjNewGraphics.h"
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#include "Scene.h"
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#include "GraphObjs.h"
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#include "/EgtDev/Include/EGkPolyLine.h"
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#include "/EgtDev/Include/EGkGdbConst.h"
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#include "/EgtDev/Include/EGKTriangle3d.h"
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//--------------------------- Macro ------------------------------------------
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// Per funzioni glew dipendenti dal context
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#define glewGetContext() (( m_pScene != nullptr) ? m_pScene->glewGetContext() : nullptr)
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//----------------------------------------------------------------------------
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ObjNewGraphics::~ObjNewGraphics( void)
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{
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Clear() ;
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}
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//----------------------------------------------------------------------------
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void
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ObjNewGraphics::Reset( void)
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{
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m_bValid = false ;
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m_nCurrMode = GL_NONE ;
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}
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//----------------------------------------------------------------------------
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void
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ObjNewGraphics::Clear( void)
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{
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DeleteVaoVbo() ;
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m_ngaList.clear() ;
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m_bValid = false ;
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m_nCurrMode = GL_NONE ;
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}
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//----------------------------------------------------------------------------
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bool
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ObjNewGraphics::AddColor( const Color& colC)
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{
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return AddColor( colC.GetRed(), colC.GetGreen(), colC.GetBlue(), colC.GetAlpha()) ;
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}
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//----------------------------------------------------------------------------
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bool
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ObjNewGraphics::AddPoint( const Point3d& ptP)
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{
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if ( m_pScene == nullptr || ! m_pScene->MakeCurrent())
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return false ;
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// definisco i buffer per la scheda grafica e vi inserisco i nuovi vertici
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unsigned int nVaoId ;
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glGenVertexArrays( 1, &nVaoId) ;
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if ( nVaoId == 0)
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return false ;
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glBindVertexArray( nVaoId) ;
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unsigned int nVboId ;
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glGenBuffers( 1, &nVboId) ;
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if ( nVboId == 0) {
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glBindVertexArray( 0) ;
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glDeleteVertexArrays( 1, &nVaoId) ;
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return false ;
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}
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glBindBuffer( GL_ARRAY_BUFFER, nVboId) ;
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glBufferData( GL_ARRAY_BUFFER, 1 * SIZEV3F, NULL, GL_STATIC_DRAW) ;
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Vert3f v3V( ptP) ;
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glBufferSubData( GL_ARRAY_BUFFER, 0, SIZEV3F, &v3V) ;
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int nCount = 1 ;
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glVertexPointer( 3, GL_FLOAT, 0, ((void*)(0))) ;
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glEnableClientState( GL_VERTEX_ARRAY) ;
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glBindVertexArray( 0) ;
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// aggiungo i dati in lista
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AddVerts( GL_POINTS, nCount, nVaoId, nVboId) ;
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// dichiaro valida la grafica
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m_bValid = true ;
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return true ;
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}
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//----------------------------------------------------------------------------
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bool
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ObjNewGraphics::AddPolyLine( const PolyLine& PL)
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{
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if ( m_pScene == nullptr || ! m_pScene->MakeCurrent())
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return false ;
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// definisco i buffer per la scheda grafica e vi inserisco i nuovi vertici
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unsigned int nVaoId ;
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glGenVertexArrays( 1, &nVaoId) ;
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if ( nVaoId == 0)
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return false ;
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glBindVertexArray( nVaoId) ;
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unsigned int nVboId ;
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glGenBuffers( 1, &nVboId) ;
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if ( nVboId == 0) {
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glBindVertexArray( 0) ;
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glDeleteVertexArrays( 1, &nVaoId) ;
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return false ;
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}
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glBindBuffer( GL_ARRAY_BUFFER, nVboId) ;
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glBufferData( GL_ARRAY_BUFFER, PL.GetPointNbr() * SIZEV3F, NULL, GL_STATIC_DRAW) ;
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Point3d ptP ;
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Vert3f v3V ;
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int nCount = 0 ;
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for ( bool bFound = PL.GetFirstPoint( ptP) ; bFound ; bFound = PL.GetNextPoint( ptP)) {
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v3V.Set( ptP) ;
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glBufferSubData( GL_ARRAY_BUFFER, nCount * SIZEV3F, SIZEV3F, &v3V) ;
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++ nCount ;
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}
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glVertexPointer( 3, GL_FLOAT, 0, ((void*)(0))) ;
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glEnableClientState( GL_VERTEX_ARRAY) ;
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glBindVertexArray( 0) ;
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// aggiungo i dati in lista
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AddVerts( GL_LINE_STRIP, nCount, nVaoId, nVboId) ;
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// dichiaro valida la grafica
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m_bValid = true ;
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return true ;
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}
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//----------------------------------------------------------------------------
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bool
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ObjNewGraphics::StartTriangles( int nNum)
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{
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if ( m_pScene == nullptr || ! m_pScene->MakeCurrent())
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return false ;
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// modo corrente deve essere nullo
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if ( m_nCurrMode != GL_NONE)
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return false ;
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// inizializzo emissione triangoli
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unsigned int nVaoId ;
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glGenVertexArrays( 1, &nVaoId) ;
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if ( nVaoId == 0)
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return false ;
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glBindVertexArray( nVaoId) ;
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unsigned int nVboId ;
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glGenBuffers( 1, &nVboId) ;
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if ( nVboId == 0) {
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glBindVertexArray( 0) ;
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glDeleteVertexArrays( 1, &nVaoId) ;
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return false ;
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}
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glBindBuffer( GL_ARRAY_BUFFER, nVboId) ;
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// 3 float per le coordinate e 3 per la normale
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glBufferData( GL_ARRAY_BUFFER, 6 * nNum * SIZEV3F, NULL, GL_STATIC_DRAW) ;
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// aggiungo i dati in lista
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AddVerts( GL_TRIANGLES, 0, nVaoId, nVboId) ;
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// dichiaro modo triangoli
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m_nCurrMode = GL_TRIANGLES ;
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return true ;
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}
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//----------------------------------------------------------------------------
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bool
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ObjNewGraphics::AddTriangle( const Triangle3d& Tria)
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{
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if ( m_pScene == nullptr || ! m_pScene->MakeCurrent())
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return false ;
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// modo corrente deve essere triangoli
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if ( m_nCurrMode != GL_TRIANGLES)
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return false ;
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// recupero il conteggio dei vertici
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int nCount = m_ngaList.back().m_nCount ;
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// emetto i vertici del triangolo
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for ( int i = 0 ; i < 3 ; ++ i) {
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Vert3f v3V( Tria.GetP( i)) ;
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glBufferSubData( GL_ARRAY_BUFFER, 2 * nCount * SIZEV3F, SIZEV3F, &v3V) ;
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Vert3f v3N( Tria.GetN()) ;
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glBufferSubData( GL_ARRAY_BUFFER, ( 2 * nCount + 1) * SIZEV3F, SIZEV3F, &v3N) ;
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++ nCount ;
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}
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// aggiorno il conteggio
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m_ngaList.back().m_nCount = nCount ;
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return true ;
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}
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//----------------------------------------------------------------------------
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bool
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ObjNewGraphics::EndTriangles( void)
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{
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if ( m_pScene == nullptr || ! m_pScene->MakeCurrent())
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return false ;
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// modo corrente deve essere triangoli
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if ( m_nCurrMode != GL_TRIANGLES)
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return false ;
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// termino il modo triangoli
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glVertexPointer( 3, GL_FLOAT, 2 * SIZEV3F, ((void*)(0))) ;
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glEnableClientState( GL_VERTEX_ARRAY) ;
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glNormalPointer( GL_FLOAT, 2 * SIZEV3F, ((void*)( 1 * SIZEV3F))) ;
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glEnableClientState( GL_NORMAL_ARRAY) ;
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glBindVertexArray( 0) ;
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// dichiaro modalità standard
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m_nCurrMode = GL_NONE ;
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// dichiaro valida la grafica
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m_bValid = true ;
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return true ;
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}
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//----------------------------------------------------------------------------
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bool
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ObjNewGraphics::Draw( int nStat, int nMark)
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{
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if ( m_pScene == nullptr || ! m_pScene->MakeCurrent())
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return false ;
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// se vuoto non faccio alcunché
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if ( m_ngaList.size() == 0)
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return true ;
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// gestione stato di visualizzazione
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if ( nStat == GDB_ST_OFF)
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return true ;
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if ( nStat == GDB_ST_SEL) {
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glPointSize( 5) ;
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glLineWidth( 3) ;
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}
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// ciclo di disegno
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NGALIST::iterator iIter ;
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for ( iIter = m_ngaList.begin() ; iIter != m_ngaList.end() ; ++ iIter) {
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switch ( iIter->m_nType) {
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case NewGrAtom::VERTS :
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if ( iIter->m_nCount > 0 && iIter->m_nVaoId != 0) {
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glBindVertexArray( iIter->m_nVaoId) ;
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glDrawArrays( iIter->m_nMode, 0, iIter->m_nCount) ;
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glBindVertexArray( 0) ;
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}
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break ;
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case NewGrAtom::COLOR :
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glColor4f( iIter->m_fRed, iIter->m_fGreen, iIter->m_fBlue, iIter->m_fAlpha) ;
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break ;
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}
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}
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// se marcato, disegno halo
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if ( nMark == GDB_MK_ON) {
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// dimensioni per halo
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glPointSize( 7) ;
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glLineWidth( 5) ;
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// colore di marcatura
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Color colMark = ( ( GetScene() != nullptr) ? GetScene()->GetMark() : Color( 192, 192, 0)) ;
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glColor4f( colMark.GetRed(), colMark.GetGreen(), colMark.GetBlue(), colMark.GetAlpha()) ;
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// ciclo di disegno
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NGALIST::iterator iIter ;
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for ( iIter = m_ngaList.begin() ; iIter != m_ngaList.end() ; ++ iIter) {
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switch ( iIter->m_nType) {
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case NewGrAtom::VERTS :
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if ( iIter->m_nCount > 0 && iIter->m_nVaoId != 0) {
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glBindVertexArray( iIter->m_nVaoId) ;
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glDrawArrays( iIter->m_nMode, 0, iIter->m_nCount) ;
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glBindVertexArray( 0) ;
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}
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break ;
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case NewGrAtom::COLOR :
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// si usa il colore di marcatura
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break ;
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}
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}
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}
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// se necessario, ripristino la normale visualizzazione
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if ( nStat == GDB_ST_SEL || nMark == GDB_MK_ON) {
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glPointSize( 3) ;
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glLineWidth( 1) ;
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}
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return true ;
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}
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//----------------------------------------------------------------------------
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bool
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ObjNewGraphics::DeleteVaoVbo( void)
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{
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if ( m_pScene == nullptr || ! m_pScene->MakeCurrent())
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return false ;
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// ciclo di cancellazione VAO/VBO
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NGALIST::iterator iIter ;
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for ( iIter = m_ngaList.begin() ; iIter != m_ngaList.end() ; ++ iIter) {
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if ( iIter->m_nType == NewGrAtom::VERTS && iIter->m_nCount > 0) {
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glBindBuffer( GL_ARRAY_BUFFER, 0) ;
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glDeleteBuffers( 1, &iIter->m_nVboId) ;
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glBindVertexArray( 0) ;
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glDeleteVertexArrays( 1, &iIter->m_nVaoId) ;
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iIter->m_nCount = 0 ;
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}
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}
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return true ;
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}
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