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97f515985d99d6d5e1e2c08b19154e5dc1916b71
openmesh/Apps/QtViewer/MeshViewerWidgetT.cc
Jan Möbius 97f515985d First checkin for OpenMesh 2.0 
git-svn-id: http://www.openmesh.org/svnrepo/OpenMesh/trunk@2 fdac6126-5c0c-442c-9429-916003d36597
2009-02-06 13:37:46 +00:00

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//=============================================================================
//
// OpenMesh
// Copyright (C) 2003 by Computer Graphics Group, RWTH Aachen
// www.openmesh.org
//
//-----------------------------------------------------------------------------
//
// License
//
// This library is free software; you can redistribute it and/or modify it
// under the terms of the GNU Lesser General Public License as published
// by the Free Software Foundation, version 2.1.
//
// This library is distributed in the hope that it will be useful, but
// WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// You should have received a copy of the GNU Lesser General Public
// License along with this library; if not, write to the Free Software
// Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
//
//-----------------------------------------------------------------------------
//
// $Revision: 1832 $
// $Date: 2008-05-23 11:10:37 +0200 (Fr, 23. Mai 2008) $
//
//=============================================================================
#define OPENMESHAPPS_MESHVIEWERWIDGET_CC
//== INCLUDES =================================================================
#ifdef _MSC_VER
//# pragma warning(disable: 4267 4311)
#endif
//
#include <iostream>
#include <fstream>
// --------------------
#include <QImage>
#include <QFileInfo>
#include <QKeyEvent>
// --------------------
#include <OpenMesh/Core/Utils/vector_cast.hh>
#include <OpenMesh/Tools/Utils/Timer.hh>
#include <OpenMesh/Apps/QtViewer/MeshViewerWidgetT.hh>
using namespace OpenMesh;
using namespace Qt;
#if defined(_MSC_VER)
# undef min
# undef max
#endif
using namespace Qt;
//== IMPLEMENTATION ==========================================================
template <typename M>
bool
MeshViewerWidgetT<M>::open_mesh(const char* _filename, IO::Options _opt)
{
// load mesh
// calculate normals
// set scene center and radius
mesh_.request_face_normals();
mesh_.request_face_colors();
mesh_.request_vertex_normals();
mesh_.request_vertex_colors();
mesh_.request_vertex_texcoords2D();
std::cout << "Loading from file '" << _filename << "'\n";
if ( IO::read_mesh(mesh_, _filename, _opt ))
{
// store read option
opt_ = _opt;
// update face and vertex normals
if ( ! opt_.check( IO::Options::FaceNormal ) )
mesh_.update_face_normals();
else
std::cout << "File provides face normals\n";
if ( ! opt_.check( IO::Options::VertexNormal ) )
mesh_.update_vertex_normals();
else
std::cout << "File provides vertex normals\n";
// check for possible color information
if ( opt_.check( IO::Options::VertexColor ) )
{
std::cout << "File provides vertex colors\n";
add_draw_mode("Colored Vertices");
}
else
mesh_.release_vertex_colors();
if ( _opt.check( IO::Options::FaceColor ) )
{
std::cout << "File provides face colors\n";
add_draw_mode("Solid Colored Faces");
add_draw_mode("Smooth Colored Faces");
}
else
mesh_.release_face_colors();
if ( _opt.check( IO::Options::VertexTexCoord ) )
std::cout << "File provides texture coordinates\n";
// bounding box
typename Mesh::ConstVertexIter vIt(mesh_.vertices_begin());
typename Mesh::ConstVertexIter vEnd(mesh_.vertices_end());
typedef typename Mesh::Point Point;
using OpenMesh::Vec3f;
Vec3f bbMin, bbMax;
bbMin = bbMax = OpenMesh::vector_cast<Vec3f>(mesh_.point(vIt));
for (size_t count=0; vIt!=vEnd; ++vIt, ++count)
{
bbMin.minimize( OpenMesh::vector_cast<Vec3f>(mesh_.point(vIt)));
bbMax.maximize( OpenMesh::vector_cast<Vec3f>(mesh_.point(vIt)));
}
// set center and radius
set_scene_pos( (bbMin+bbMax)*0.5, (bbMin-bbMax).norm()*0.5 );
// for normal display
normal_scale_ = (bbMax-bbMin).min()*0.05f;
// info
std::clog << mesh_.n_vertices() << " vertices, "
<< mesh_.n_edges() << " edge, "
<< mesh_.n_faces() << " faces\n";
// base point for displaying face normals
{
OpenMesh::Utils::Timer t;
t.start();
mesh_.add_property( fp_normal_base_ );
typename M::FaceIter f_it = mesh_.faces_begin();
typename M::FaceVertexIter fv_it;
for (;f_it != mesh_.faces_end(); ++f_it)
{
typename Mesh::Point v(0,0,0);
for( fv_it=mesh_.fv_iter(f_it); fv_it; ++fv_it)
v += OpenMesh::vector_cast<typename Mesh::Normal>(mesh_.point(fv_it));
v *= 1.0f/3.0f;
mesh_.property( fp_normal_base_, f_it ) = v;
}
t.stop();
std::clog << "Computed base point for displaying face normals ["
<< t.as_string() << "]" << std::endl;
}
//
{
std::clog << "Computing strips.." << std::flush;
OpenMesh::Utils::Timer t;
t.start();
compute_strips();
t.stop();
std::clog << "done [" << strips_.n_strips()
<< " strips created in " << t.as_string() << "]\n";
}
//
#if defined(WIN32)
updateGL();
#endif
setWindowTitle(QFileInfo(_filename).fileName());
// loading done
return true;
}
return false;
}
//-----------------------------------------------------------------------------
template <typename M>
bool MeshViewerWidgetT<M>::open_texture( const char *_filename )
{
QImage texsrc;
QString fname = _filename;
if (texsrc.load( fname ))
{
return set_texture( texsrc );
}
return false;
}
//-----------------------------------------------------------------------------
template <typename M>
bool MeshViewerWidgetT<M>::set_texture( QImage& _texsrc )
{
if ( !opt_.vertex_has_texcoord() )
return false;
{
// adjust texture size: 2^k * 2^l
int tex_w, w( _texsrc.width() );
int tex_h, h( _texsrc.height() );
for (tex_w=1; tex_w <= w; tex_w <<= 1) {};
for (tex_h=1; tex_h <= h; tex_h <<= 1) {};
tex_w >>= 1;
tex_h >>= 1;
_texsrc = _texsrc.scaled( tex_w, tex_h, Qt::IgnoreAspectRatio, Qt::SmoothTransformation );
}
QImage texture( QGLWidget::convertToGLFormat ( _texsrc ) );
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glPixelStorei(GL_UNPACK_SKIP_ROWS, 0);
glPixelStorei(GL_UNPACK_SKIP_PIXELS, 0);
glPixelStorei(GL_UNPACK_ALIGNMENT, 1);
glPixelStorei(GL_PACK_ROW_LENGTH, 0);
glPixelStorei(GL_PACK_SKIP_ROWS, 0);
glPixelStorei(GL_PACK_SKIP_PIXELS, 0);
glPixelStorei(GL_PACK_ALIGNMENT, 1);
if ( tex_id_ > 0 )
{
glDeleteTextures(1, &tex_id_);
}
glGenTextures(1, &tex_id_);
glBindTexture(GL_TEXTURE_2D, tex_id_);
// glTexGenfv( GL_S, GL_SPHERE_MAP, 0 );
// glTexGenfv( GL_T, GL_SPHERE_MAP, 0 );
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, GL_REPEAT);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, GL_LINEAR);
glTexParameteri(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, GL_LINEAR);
glTexImage2D(GL_TEXTURE_2D, // target
0, // level
GL_RGBA, // internal format
texture.width(), // width (2^n)
texture.height(), // height (2^m)
0, // border
GL_RGBA, // format
GL_UNSIGNED_BYTE, // type
texture.bits() ); // pointer to pixels
std::cout << "Texture loaded\n";
return true;
}
//-----------------------------------------------------------------------------
template <typename M>
void
MeshViewerWidgetT<M>::draw_openmesh(const std::string& _draw_mode)
{
typename Mesh::ConstFaceIter fIt(mesh_.faces_begin()),
fEnd(mesh_.faces_end());
typename Mesh::ConstFaceVertexIter fvIt;
#if defined(OM_USE_OSG) && OM_USE_OSG
if (_draw_mode == "OpenSG Indices") // --------------------------------------
{
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(3, GL_FLOAT, 0, mesh_.points());
glEnableClientState(GL_NORMAL_ARRAY);
glNormalPointer(GL_FLOAT, 0, mesh_.vertex_normals());
if ( tex_id_ && mesh_.has_vertex_texcoords2D() )
{
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(2, GL_FLOAT, 0, mesh_.texcoords2D());
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, tex_id_);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, tex_mode_);
}
glDrawElements(GL_TRIANGLES,
mesh_.osg_indices()->size(),
GL_UNSIGNED_INT,
&mesh_.osg_indices()->getField()[0] );
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
}
else
#endif
if (_draw_mode == "Wireframe") // -------------------------------------------
{
glBegin(GL_TRIANGLES);
for (; fIt!=fEnd; ++fIt)
{
fvIt = mesh_.cfv_iter(fIt.handle());
glVertex3fv( &mesh_.point(fvIt)[0] );
++fvIt;
glVertex3fv( &mesh_.point(fvIt)[0] );
++fvIt;
glVertex3fv( &mesh_.point(fvIt)[0] );
}
glEnd();
}
else if (_draw_mode == "Solid Flat") // -------------------------------------
{
glBegin(GL_TRIANGLES);
for (; fIt!=fEnd; ++fIt)
{
glNormal3fv( &mesh_.normal(fIt)[0] );
fvIt = mesh_.cfv_iter(fIt.handle());
glVertex3fv( &mesh_.point(fvIt)[0] );
++fvIt;
glVertex3fv( &mesh_.point(fvIt)[0] );
++fvIt;
glVertex3fv( &mesh_.point(fvIt)[0] );
}
glEnd();
}
else if (_draw_mode == "Solid Smooth") // -----------------------------------
{
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(3, GL_FLOAT, 0, mesh_.points());
glEnableClientState(GL_NORMAL_ARRAY);
glNormalPointer(GL_FLOAT, 0, mesh_.vertex_normals());
if ( tex_id_ && mesh_.has_vertex_texcoords2D() )
{
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(2, GL_FLOAT, 0, mesh_.texcoords2D());
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, tex_id_);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, tex_mode_);
}
glBegin(GL_TRIANGLES);
for (; fIt!=fEnd; ++fIt)
{
fvIt = mesh_.cfv_iter(fIt.handle());
glArrayElement(fvIt.handle().idx());
++fvIt;
glArrayElement(fvIt.handle().idx());
++fvIt;
glArrayElement(fvIt.handle().idx());
}
glEnd();
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
if ( tex_id_ && mesh_.has_vertex_texcoords2D() )
{
glDisable(GL_TEXTURE_2D);
}
}
else if (_draw_mode == "Colored Vertices") // --------------------------------
{
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(3, GL_FLOAT, 0, mesh_.points());
glEnableClientState(GL_NORMAL_ARRAY);
glNormalPointer(GL_FLOAT, 0, mesh_.vertex_normals());
if ( mesh_.has_vertex_colors() )
{
glEnableClientState( GL_COLOR_ARRAY );
glColorPointer(3, GL_UNSIGNED_BYTE, 0,mesh_.vertex_colors());
}
glBegin(GL_TRIANGLES);
for (; fIt!=fEnd; ++fIt)
{
fvIt = mesh_.cfv_iter(fIt.handle());
glArrayElement(fvIt.handle().idx());
++fvIt;
glArrayElement(fvIt.handle().idx());
++fvIt;
glArrayElement(fvIt.handle().idx());
}
glEnd();
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
}
else if (_draw_mode == "Solid Colored Faces") // -----------------------------
{
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(3, GL_FLOAT, 0, mesh_.points());
glEnableClientState(GL_NORMAL_ARRAY);
glNormalPointer(GL_FLOAT, 0, mesh_.vertex_normals());
glBegin(GL_TRIANGLES);
for (; fIt!=fEnd; ++fIt)
{
glColor( fIt.handle() );
fvIt = mesh_.cfv_iter(fIt.handle());
glArrayElement(fvIt.handle().idx());
++fvIt;
glArrayElement(fvIt.handle().idx());
++fvIt;
glArrayElement(fvIt.handle().idx());
}
glEnd();
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
}
else if (_draw_mode == "Smooth Colored Faces") // ---------------------------
{
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(3, GL_FLOAT, 0, mesh_.points());
glEnableClientState(GL_NORMAL_ARRAY);
glNormalPointer(GL_FLOAT, 0, mesh_.vertex_normals());
glBegin(GL_TRIANGLES);
for (; fIt!=fEnd; ++fIt)
{
glMaterial( fIt.handle() );
fvIt = mesh_.cfv_iter(fIt.handle());
glArrayElement(fvIt.handle().idx());
++fvIt;
glArrayElement(fvIt.handle().idx());
++fvIt;
glArrayElement(fvIt.handle().idx());
}
glEnd();
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
}
else if ( _draw_mode == "Strips'n VertexArrays" ) // ------------------------
{
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(3, GL_FLOAT, 0, mesh_.points());
glEnableClientState(GL_NORMAL_ARRAY);
glNormalPointer(GL_FLOAT, 0, mesh_.vertex_normals());
if ( tex_id_ && mesh_.has_vertex_texcoords2D() )
{
glEnableClientState(GL_TEXTURE_COORD_ARRAY);
glTexCoordPointer(2, GL_FLOAT, 0, mesh_.texcoords2D());
glEnable(GL_TEXTURE_2D);
glBindTexture(GL_TEXTURE_2D, tex_id_);
glTexEnvf(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, tex_mode_);
}
typename MyStripifier::StripsIterator strip_it = strips_.begin();
typename MyStripifier::StripsIterator strip_last = strips_.end();
// Draw all strips
for (; strip_it!=strip_last; ++strip_it)
{
glDrawElements(GL_TRIANGLE_STRIP,
strip_it->size(), GL_UNSIGNED_INT, &(*strip_it)[0] );
}
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_NORMAL_ARRAY);
glDisableClientState(GL_TEXTURE_COORD_ARRAY);
}
else if (_draw_mode == "Show Strips" && strips_.is_valid() ) // -------------
{
typename MyStripifier::StripsIterator strip_it = strips_.begin();
typename MyStripifier::StripsIterator strip_last = strips_.end();
float cmax = 256.0f;
int range = 220;
int base = (int)cmax-range;
int drcol = 13;
int dgcol = 31;
int dbcol = 17;
int rcol=0, gcol=dgcol, bcol=dbcol+dbcol;
// Draw all strips
for (; strip_it!=strip_last; ++strip_it)
{
typename MyStripifier::IndexIterator idx_it = strip_it->begin();
typename MyStripifier::IndexIterator idx_last = strip_it->end();
rcol = (rcol+drcol) % range;
gcol = (gcol+dgcol) % range;
bcol = (bcol+dbcol) % range;
glBegin(GL_TRIANGLE_STRIP);
glColor3f((rcol+base)/cmax, (gcol+base)/cmax, (bcol+base)/cmax);
for ( ;idx_it != idx_last; ++idx_it )
glVertex3fv(&mesh_.point( OM_TYPENAME Mesh::VertexHandle(*idx_it))[0]);
glEnd();
}
glColor3f(1.0, 1.0, 1.0);
}
else if( _draw_mode == "Points" ) // -----------------------------------------
{
glEnableClientState(GL_VERTEX_ARRAY);
glVertexPointer(3, GL_FLOAT, 0, mesh_.points());
if (mesh_.has_vertex_colors() && use_color_)
{
glEnableClientState(GL_COLOR_ARRAY);
glColorPointer(3, GL_UNSIGNED_BYTE, 0, mesh_.vertex_colors());
}
glDrawArrays( GL_POINTS, 0, mesh_.n_vertices() );
glDisableClientState(GL_VERTEX_ARRAY);
glDisableClientState(GL_COLOR_ARRAY);
}
}
//-----------------------------------------------------------------------------
template <typename M>
void
MeshViewerWidgetT<M>::draw_scene(const std::string& _draw_mode)
{
if ( ! mesh_.n_vertices() )
return;
#if defined(OM_USE_OSG) && OM_USE_OSG
else if ( _draw_mode == "OpenSG Indices")
{
glEnable(GL_LIGHTING);
glShadeModel(GL_SMOOTH);
draw_openmesh( _draw_mode );
}
else
#endif
if ( _draw_mode == "Points" )
{
glDisable(GL_LIGHTING);
draw_openmesh(_draw_mode);
}
else if (_draw_mode == "Wireframe")
{
glDisable(GL_LIGHTING);
glPolygonMode(GL_FRONT_AND_BACK, GL_LINE);
draw_openmesh(_draw_mode);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
}
else if ( _draw_mode == "Hidden-Line" )
{
glDisable(GL_LIGHTING);
glShadeModel(GL_FLAT);
glPolygonMode(GL_FRONT_AND_BACK, GL_FILL);
glColor4f( 0.0f, 0.0f, 0.0f, 1.0f );
glDepthRange(0.01, 1.0);
draw_openmesh( "Wireframe" );
glPolygonMode( GL_FRONT_AND_BACK, GL_LINE);
glColor4f( 1.0f, 1.0f, 1.0f, 1.0f );
glDepthRange( 0.0, 1.0 );
draw_openmesh( "Wireframe" );
glPolygonMode( GL_FRONT_AND_BACK, GL_FILL);
}
else if (_draw_mode == "Solid Flat")
{
glEnable(GL_LIGHTING);
glShadeModel(GL_FLAT);
draw_openmesh(_draw_mode);
}
else if (_draw_mode == "Solid Smooth" ||
_draw_mode == "Strips'n VertexArrays" )
{
glEnable(GL_LIGHTING);
glShadeModel(GL_SMOOTH);
draw_openmesh(_draw_mode);
}
else if (_draw_mode == "Show Strips")
{
glDisable(GL_LIGHTING);
draw_openmesh(_draw_mode);
}
else if (_draw_mode == "Colored Vertices" )
{
glDisable(GL_LIGHTING);
glShadeModel(GL_SMOOTH);
draw_openmesh(_draw_mode);
}
else if (_draw_mode == "Solid Colored Faces")
{
glDisable(GL_LIGHTING);
glShadeModel(GL_FLAT);
draw_openmesh(_draw_mode);
setDefaultMaterial();
}
else if (_draw_mode == "Smooth Colored Faces" )
{
glEnable(GL_LIGHTING);
glShadeModel(GL_SMOOTH);
draw_openmesh(_draw_mode);
setDefaultMaterial();
}
if (show_vnormals_)
{
typename Mesh::VertexIter vit;
glDisable(GL_LIGHTING);
glBegin(GL_LINES);
glColor3f(1.000f, 0.803f, 0.027f); // orange
for(vit=mesh_.vertices_begin(); vit!=mesh_.vertices_end(); ++vit)
{
glVertex( vit );
glVertex( mesh_.point( vit ) + normal_scale_*mesh_.normal( vit ) );
}
glEnd();
}
if (show_fnormals_)
{
typename Mesh::FaceIter fit;
glDisable(GL_LIGHTING);
glBegin(GL_LINES);
glColor3f(0.705f, 0.976f, 0.270f); // greenish
for(fit=mesh_.faces_begin(); fit!=mesh_.faces_end(); ++fit)
{
glVertex( mesh_.property(fp_normal_base_, fit) );
glVertex( mesh_.property(fp_normal_base_, fit) +
normal_scale_*mesh_.normal( fit ) );
}
glEnd();
}
}
//-----------------------------------------------------------------------------
template <typename M>
void
MeshViewerWidgetT<M>::enable_strips()
{
if (!f_strips_)
{
f_strips_ = true;
add_draw_mode("Strips'n VertexArrays");
add_draw_mode("Show Strips");
}
}
//-----------------------------------------------------------------------------
template <typename M>
void
MeshViewerWidgetT<M>::disable_strips()
{
if (f_strips_)
{
f_strips_ = false;
del_draw_mode("Show Strips");
del_draw_mode("Strip'n VertexArrays");
}
}
//-----------------------------------------------------------------------------
#define TEXMODE( Mode ) \
tex_mode_ = Mode; std::cout << "Texture mode set to " << #Mode << std::endl
template <typename M>
void
MeshViewerWidgetT<M>::keyPressEvent( QKeyEvent* _event)
{
switch( _event->key() )
{
case Key_D:
if ( mesh_.has_vertex_colors() && (current_draw_mode()=="Points") )
{
use_color_ = !use_color_;
std::cout << "use color: " << (use_color_?"yes\n":"no\n");
if (!use_color_)
glColor3f(1.0f, 1.0f, 1.0f);
updateGL();
}
break;
case Key_N:
if ( _event->modifiers() & ShiftModifier )
{
show_fnormals_ = !show_fnormals_;
std::cout << "show face normals: " << (show_fnormals_?"yes\n":"no\n");
}
else
{
show_vnormals_ = !show_vnormals_;
std::cout << "show vertex normals: " << (show_vnormals_?"yes\n":"no\n");
}
updateGL();
break;
case Key_I:
std::cout << "\n# Vertices : " << mesh_.n_vertices() << std::endl;
std::cout << "# Edges : " << mesh_.n_edges() << std::endl;
std::cout << "# Faces : " << mesh_.n_faces() << std::endl;
std::cout << "binary input : " << opt_.check(opt_.Binary) << std::endl;
std::cout << "swapped input : " << opt_.check(opt_.Swap) << std::endl;
std::cout << "vertex normal : "
<< opt_.check(opt_.VertexNormal) << std::endl;
std::cout << "vertex texcoord: "
<< opt_.check(opt_.VertexTexCoord) << std::endl;
std::cout << "vertex color : "
<< opt_.check(opt_.VertexColor) << std::endl;
std::cout << "face normal : "
<< opt_.check(opt_.FaceNormal) << std::endl;
std::cout << "face color : "
<< opt_.check(opt_.FaceColor) << std::endl;
this->QGLViewerWidget::keyPressEvent( _event );
break;
case Key_T:
switch( tex_mode_ )
{
case GL_MODULATE: TEXMODE(GL_DECAL); break;
case GL_DECAL: TEXMODE(GL_BLEND); break;
case GL_BLEND: TEXMODE(GL_REPLACE); break;
case GL_REPLACE: TEXMODE(GL_MODULATE); break;
}
updateGL();
break;
default:
this->QGLViewerWidget::keyPressEvent( _event );
}
}
#undef TEXMODE
//=============================================================================
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