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/****************************************************************************
* VCGLib o o *
* Visual and Computer Graphics Library o o *
* _ O _ *
* Copyright(C) 2007 \/)\/ *
* Visual Computing Lab /\/| *
* ISTI - Italian National Research Council | *
* \ *
* All rights reserved. *
* *
* This program is free software; you can redistribute it and/or modify *
* it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. *
* *
* This program 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 General Public License (http://www.gnu.org/licenses/gpl.txt) *
* for more details. *
* *
****************************************************************************/
/****************************************************************************
History
$Log: not supported by cvs2svn $
Revision 1.1 2007/10/18 08:52:06 benedetti
Initial release.
****************************************************************************/
#include <QtGui>
#include "glarea.h"
#include <wrap/qt/trackball.h>
GLArea::GLArea (QWidget * parent)
:QGLWidget (parent)
{
drawmode= SMOOTH;
GLArea::loadTetrahedron();
}
void GLArea::selectDrawMode(int mode){
drawmode=DrawMode(mode);
updateGL();
}
void GLArea::loadMesh(QString fileName)
{
int err=vcg::tri::io::ImporterPLY<CMesh>::Open(mesh,(fileName.toStdString()).c_str());
if(err!=0){
const char* errmsg=vcg::tri::io::ImporterPLY<CMesh>::ErrorMsg(err);
QMessageBox::warning(this,tr("Error Loading Mesh"),QString(errmsg));
}
initMesh("Loaded \""+fileName+"\".");
}
void GLArea::loadTetrahedron(){
vcg::tri::Tetrahedron(mesh);
initMesh(tr("Tethraedron [builtin]"));
}
void GLArea::loadDodecahedron(){
vcg::tri::Dodecahedron(mesh);
initMesh(tr("Dodecahedron [builtin]"));
}
void GLArea::initMesh(QString message)
{
// update bounding box
vcg::tri::UpdateBounding<CMesh>::Box(mesh);
// update Normals
vcg::tri::UpdateNormals<CMesh>::PerVertexNormalizedPerFace(mesh);
vcg::tri::UpdateNormals<CMesh>::PerFaceNormalized(mesh);
// Initialize the opengl wrapper
glWrap.m = &mesh;
glWrap.Update();
updateGL();
emit setStatusBar(message);
}
void GLArea::initializeGL ()
{
glClearColor(0, 0, 0, 0);
glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0);
glEnable(GL_NORMALIZE);
glEnable(GL_COLOR_MATERIAL);
glEnable(GL_CULL_FACE);
glEnable(GL_DEPTH_TEST);
}
void GLArea::resizeGL (int w, int h)
{
glViewport (0, 0, (GLsizei) w, (GLsizei) h);
initializeGL();
}
void GLArea::paintGL ()
{
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_PROJECTION);
glLoadIdentity();
gluPerspective(40, GLArea::width()/(float)GLArea::height(), 0.1, 100);
glMatrixMode(GL_MODELVIEW);
glLoadIdentity();
gluLookAt(0,0,5, 0,0,0, 0,1,0);
track.center=vcg::Point3f(0, 0, 0);
track.radius= 1;
track.GetView();
track.Apply(false);
glPushMatrix();
float d=1.0f/mesh.bbox.Diag();
vcg::glScale(d);
glTranslate(-glWrap.m->bbox.Center());
// the trimesh drawing calls
switch(drawmode)
{
case SMOOTH:
glWrap.Draw<vcg::GLW::DMSmooth, vcg::GLW::CMNone,vcg::GLW::TMNone> ();
break;
case POINTS:
glWrap.Draw<vcg::GLW::DMPoints, vcg::GLW::CMNone,vcg::GLW::TMNone> ();
break;
case WIRE:
glWrap.Draw<vcg::GLW::DMWire, vcg::GLW::CMNone,vcg::GLW::TMNone> ();
break;
case FLATWIRE:
glWrap.Draw<vcg::GLW::DMFlatWire, vcg::GLW::CMNone,vcg::GLW::TMNone> ();
break;
case HIDDEN:
glWrap.Draw<vcg::GLW::DMHidden, vcg::GLW::CMNone,vcg::GLW::TMNone> ();
break;
case FLAT:
glWrap.Draw<vcg::GLW::DMFlat, vcg::GLW::CMNone,vcg::GLW::TMNone> ();
break;
default:
break;
}
glPopMatrix();
track.DrawPostApply();
}
void GLArea::keyReleaseEvent (QKeyEvent * e)
{
e->ignore ();
if (e->key () == Qt::Key_Control)
track.ButtonUp (QT2VCG (Qt::NoButton, Qt::ControlModifier));
if (e->key () == Qt::Key_Shift)
track.ButtonUp (QT2VCG (Qt::NoButton, Qt::ShiftModifier));
if (e->key () == Qt::Key_Alt)
track.ButtonUp (QT2VCG (Qt::NoButton, Qt::AltModifier));
updateGL ();
}
void GLArea::keyPressEvent (QKeyEvent * e)
{
e->ignore ();
if (e->key () == Qt::Key_Control)
track.ButtonDown (QT2VCG (Qt::NoButton, Qt::ControlModifier));
if (e->key () == Qt::Key_Shift)
track.ButtonDown (QT2VCG (Qt::NoButton, Qt::ShiftModifier));
if (e->key () == Qt::Key_Alt)
track.ButtonDown (QT2VCG (Qt::NoButton, Qt::AltModifier));
updateGL ();
}
void GLArea::mousePressEvent (QMouseEvent * e)
{
e->accept ();
setFocus ();
track.MouseDown (e->x (), height () - e->y (), QT2VCG (e->button (), e->modifiers ()));
updateGL ();
}
void GLArea::mouseMoveEvent (QMouseEvent * e)
{
if (e->buttons ()) {
track.MouseMove (e->x (), height () - e->y ());
updateGL ();
}
}
void GLArea::mouseReleaseEvent (QMouseEvent * e)
{
track.MouseUp (e->x (), height () - e->y (), QT2VCG (e->button (), e->modifiers ()));
updateGL ();
}
void GLArea::wheelEvent (QWheelEvent * e)
{
const int WHEEL_STEP = 120;
track.MouseWheel (e->delta () / float (WHEEL_STEP), QTWheel2VCG (e->modifiers ()));
updateGL ();
}
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