Dario Sassi
288 lines
9.3 KiB
C++
288 lines
9.3 KiB
C++
//----------------------------------------------------------------------------
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// EgalTech 2014-2014
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//----------------------------------------------------------------------------
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// File : SceneDirect.cpp Data : 09.10.14 Versione : 1.5j1
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// Contenuto : Implementazione disegno diretto nella scena.
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//
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//
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//
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// Modifiche : 25.02.14 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 "ObjOldGraphics.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/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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//----------------------------------------------------------------------------
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bool
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Scene::SetGeoLineAttribs( Color GLcol)
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{
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m_colorGL = GLcol ;
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return true ;
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}
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//----------------------------------------------------------------------------
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bool
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Scene::SetGeoLine( const Point3d& ptP1, const Point3d& ptP2)
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{
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m_bGeoLine = true ;
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m_ptGeoLineP1 = ptP1 ;
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m_ptGeoLineP2 = ptP2 ;
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return ( ! AreSamePointApprox( m_ptGeoLineP1, m_ptGeoLineP2)) ;
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}
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//----------------------------------------------------------------------------
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bool
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Scene::ResetGeoLine( void)
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{
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bool bOld = m_bGeoLine ;
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m_bGeoLine = false ;
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return bOld ;
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}
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//----------------------------------------------------------------------------
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bool
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Scene::SetGeoTriaAttribs( Color GTcol)
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{
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m_colorGT = GTcol ;
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return true ;
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}
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//----------------------------------------------------------------------------
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bool
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Scene::SetGeoTria( const Point3d& ptP1, const Point3d& ptP2, const Point3d& ptP3)
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{
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m_bGeoTria = true ;
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m_ptGeoTriaP1 = ptP1 ;
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m_ptGeoTriaP2 = ptP2 ;
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m_ptGeoTriaP3 = ptP3 ;
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return ( ! AreSamePointApprox( m_ptGeoTriaP1, m_ptGeoTriaP2) &&
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! AreSamePointApprox( m_ptGeoTriaP1, m_ptGeoTriaP3)) ;
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}
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//----------------------------------------------------------------------------
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bool
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Scene::ResetGeoTria( void)
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{
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bool bOld = m_bGeoTria ;
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m_bGeoTria = false ;
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return bOld ;
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}
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//----------------------------------------------------------------------------
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bool
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Scene::SetWinRectAttribs( bool bOutline, Color WRcol)
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{
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m_bOutlineWR = bOutline ;
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m_colorWR = WRcol ;
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return true ;
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}
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//----------------------------------------------------------------------------
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bool
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Scene::SetWinRect( const Point3d& ptWinRectP1, const Point3d& ptWinRectP2)
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{
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m_bWinRect = true ;
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m_ptWinRectP1 = ptWinRectP1 ;
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m_ptWinRectP2 = ptWinRectP2 ;
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return ( ! AreSamePointApprox( m_ptWinRectP1, m_ptWinRectP2)) ;
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}
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//----------------------------------------------------------------------------
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bool
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Scene::ResetWinRect( void)
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{
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bool bOld = m_bWinRect ;
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m_bWinRect = false ;
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return bOld ;
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}
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//----------------------------------------------------------------------------
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bool
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Scene::DrawDirect( void)
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{
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// eseguo disegni diretti
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bool bOk = true ;
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if ( m_bGeoLine) {
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if ( ! DrawGeoLine())
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bOk = false ;
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}
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if ( m_bGeoTria) {
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if ( ! DrawGeoTria())
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bOk = false ;
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}
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if ( m_bWinRect) {
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if ( ! DrawWinRect())
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bOk = false ;
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}
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return bOk ;
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}
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//----------------------------------------------------------------------------
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bool
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Scene::DrawGeoLine( void)
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{
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// disegno linea in geometria globale
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glBegin( GL_LINES) ;
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glColor3f( m_colorGL.GetRed(), m_colorGL.GetGreen(), m_colorGL.GetBlue()) ;
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glVertex3f( float( m_ptGeoLineP1.x), float( m_ptGeoLineP1.y), float( m_ptGeoLineP1.z)) ;
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glVertex3f( float( m_ptGeoLineP2.x), float( m_ptGeoLineP2.y), float( m_ptGeoLineP2.z)) ;
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glEnd() ;
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return true ;
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}
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//----------------------------------------------------------------------------
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bool
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Scene::DrawGeoTria( void)
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{
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// disegno triangolo in geometria globale
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glBegin( GL_LINE_LOOP) ;
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glColor3f( m_colorGT.GetRed(), m_colorGT.GetGreen(), m_colorGT.GetBlue()) ;
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glVertex3f( float( m_ptGeoTriaP1.x), float( m_ptGeoTriaP1.y), float( m_ptGeoTriaP1.z)) ;
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glVertex3f( float( m_ptGeoTriaP2.x), float( m_ptGeoTriaP2.y), float( m_ptGeoTriaP2.z)) ;
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glVertex3f( float( m_ptGeoTriaP3.x), float( m_ptGeoTriaP3.y), float( m_ptGeoTriaP3.z)) ;
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glEnd() ;
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return true ;
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}
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//----------------------------------------------------------------------------
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bool
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Scene::DrawWinRect( void)
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{
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// rendo neutre matrici di proiezione e di modello/vista
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glMatrixMode( GL_PROJECTION) ;
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glPushMatrix() ;
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glLoadIdentity() ;
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glMatrixMode( GL_MODELVIEW) ;
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glPushMatrix() ;
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glLoadIdentity() ;
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// recupero le dimensioni della viewport
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GLint vPort[ 4] ;
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glGetIntegerv( GL_VIEWPORT, vPort) ;
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// estremi del rettangolo nel riferimento Win ( 0,0 in alto a sinistra e Y verso il basso)
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double dWinXmin = min( m_ptWinRectP1.x, m_ptWinRectP2.x) ;
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double dWinXmax = max( m_ptWinRectP1.x, m_ptWinRectP2.x) ;
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double dWinYmin = min( m_ptWinRectP1.y, m_ptWinRectP2.y) ;
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double dWinYmax = max( m_ptWinRectP1.y, m_ptWinRectP2.y) ;
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// estremi del rettangolo nel riferimento View (0,0 in centro, quindi estremi -1,-1 e +1,+1 assi soliti)
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float dViewXmin = float( - 1 + 2 * ( 1 + dWinXmin) / ( vPort[2] + 1)) ;
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float dViewXmax = float( - 1 + 2 * ( 1 + dWinXmax) / ( vPort[2] + 1)) ;
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float dViewYmin = float( - 1 + 2 * ( vPort[3] - dWinYmax) / ( vPort[3] + 1)) ;
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float dViewYmax = float( - 1 + 2 * ( vPort[3] - dWinYmin) / ( vPort[3] + 1)) ;
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// eseguo il disegno del rettangolo
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if ( ! m_bNewWay) {
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if ( m_bOutlineWR) {
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glBegin( GL_LINE_LOOP) ;
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glColor3f( m_colorWR.GetRed(), m_colorWR.GetGreen(), m_colorWR.GetBlue()) ;
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glVertex3f( dViewXmin, dViewYmin, 0.5) ;
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glVertex3f( dViewXmax, dViewYmin, 0.5) ;
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glVertex3f( dViewXmax, dViewYmax, 0.5) ;
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glVertex3f( dViewXmin, dViewYmax, 0.5) ;
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glEnd() ;
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}
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else {
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glEnable( GL_BLEND) ;
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glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) ;
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glBegin( GL_TRIANGLE_STRIP) ;
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glColor4f( m_colorWR.GetRed(), m_colorWR.GetGreen(), m_colorWR.GetBlue(), m_colorWR.GetAlpha()) ;
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glVertex3f( dViewXmin, dViewYmin, 0.5) ;
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glVertex3f( dViewXmax, dViewYmin, 0.5) ;
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glVertex3f( dViewXmin, dViewYmax, 0.5) ;
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glVertex3f( dViewXmax, dViewYmax, 0.5) ;
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glEnd() ;
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glDisable( GL_BLEND) ;
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}
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}
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else {
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// predispongo VAO e VBO usa e getta
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unsigned int nVaoId ;
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unsigned int nVboId ;
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// definizione
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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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glGenBuffers( 1, &nVboId) ;
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glBindBuffer( GL_ARRAY_BUFFER, nVboId) ;
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glBufferData( GL_ARRAY_BUFFER, 4 * SIZEV3F, NULL, GL_STATIC_DRAW) ;
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glVertexPointer( 3, GL_FLOAT, SIZEV3F, ((void*)(0))) ;
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glEnableClientState( GL_VERTEX_ARRAY) ;
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// se contorno
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if ( m_bOutlineWR) {
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// assegno i vertici (ordine S)
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Vert3f v3V ;
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v3V.Set( dViewXmin, dViewYmin, 0.5) ;
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glBufferSubData( GL_ARRAY_BUFFER, 0 * SIZEV3F, SIZEV3F, &v3V) ;
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v3V.Set( dViewXmax, dViewYmin, 0.5) ;
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glBufferSubData( GL_ARRAY_BUFFER, 1 * SIZEV3F, SIZEV3F, &v3V) ;
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v3V.Set( dViewXmax, dViewYmax, 0.5) ;
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glBufferSubData( GL_ARRAY_BUFFER, 2 * SIZEV3F, SIZEV3F, &v3V) ;
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v3V.Set( dViewXmin, dViewYmax, 0.5) ;
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glBufferSubData( GL_ARRAY_BUFFER, 3 * SIZEV3F, SIZEV3F, &v3V) ;
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// imposto colore
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glColor3f( m_colorWR.GetRed(), m_colorWR.GetGreen(), m_colorWR.GetBlue()) ;
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// disegno
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glDrawArrays( GL_LINE_LOOP, 0, 4) ;
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}
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// altrimenti area
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else {
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// assegno i vertici (ordine S)
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Vert3f v3V ;
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v3V.Set( dViewXmin, dViewYmin, 0.5) ;
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glBufferSubData( GL_ARRAY_BUFFER, 0 * SIZEV3F, SIZEV3F, &v3V) ;
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v3V.Set( dViewXmax, dViewYmin, 0.5) ;
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glBufferSubData( GL_ARRAY_BUFFER, 1 * SIZEV3F, SIZEV3F, &v3V) ;
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v3V.Set( dViewXmin, dViewYmax, 0.5) ;
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glBufferSubData( GL_ARRAY_BUFFER, 2 * SIZEV3F, SIZEV3F, &v3V) ;
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v3V.Set( dViewXmax, dViewYmax, 0.5) ;
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glBufferSubData( GL_ARRAY_BUFFER, 3 * SIZEV3F, SIZEV3F, &v3V) ;
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// imposto blending e colore
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glEnable( GL_BLEND) ;
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glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA) ;
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glColor4f( m_colorWR.GetRed(), m_colorWR.GetGreen(), m_colorWR.GetBlue(), m_colorWR.GetAlpha()) ;
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// disegno
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glDrawArrays( GL_TRIANGLE_STRIP, 0, 4) ;
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// disabilito blending
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glDisable( GL_BLEND) ;
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}
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// cancello VAO e VBO
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glBindBuffer( GL_ARRAY_BUFFER, 0) ;
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glDeleteBuffers( 1, &nVboId) ;
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glBindVertexArray( 0) ;
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glDeleteVertexArrays( 1, &nVaoId) ;
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}
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// ripristino le matrici di proiezione e di modello/vista originali
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glMatrixMode( GL_PROJECTION) ;
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glPopMatrix() ;
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glMatrixMode( GL_MODELVIEW) ;
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glPopMatrix() ;
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return true ;
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} |