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