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updated the basic qt opengl example to support qt 5.0 ways of managing coords 

(simply use the new QT2VCG_X/Y helper functions to translate mouse events)
This commit is contained in:
Paolo Cignoni 2013-12-13 07:57:08 +00:00
parent 276438958f
commit fc047dbe3f
1 changed files with 56 additions and 56 deletions
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112
apps/sample/trimesh_QT/glarea.cpp
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@ -8,7 +8,7 @@
* \ * * \ *
* All rights reserved. * * All rights reserved. *
* * * *
* This program is free software; you can redistribute it and/or modify * * 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 * * it under the terms of the GNU General Public License as published by *
* the Free Software Foundation; either version 2 of the License, or * * the Free Software Foundation; either version 2 of the License, or *
* (at your option) any later version. * * (at your option) any later version. *
@ -40,52 +40,52 @@ Initial release.
GLArea::GLArea (QWidget * parent) GLArea::GLArea (QWidget * parent)
:QGLWidget (parent) :QGLWidget (parent)
{ {
drawmode= SMOOTH; drawmode= SMOOTH;
GLArea::loadTetrahedron(); GLArea::loadTetrahedron();
} }
void GLArea::selectDrawMode(int mode){ void GLArea::selectDrawMode(int mode){
drawmode=DrawMode(mode); drawmode=DrawMode(mode);
updateGL(); updateGL();
} }
void GLArea::loadMesh(QString fileName) void GLArea::loadMesh(QString fileName)
{ {
int err=vcg::tri::io::ImporterPLY<CMesh>::Open(mesh,(fileName.toStdString()).c_str()); int err=vcg::tri::io::ImporterPLY<CMesh>::Open(mesh,(fileName.toStdString()).c_str());
if(err!=0){ if(err!=0){
const char* errmsg=vcg::tri::io::ImporterPLY<CMesh>::ErrorMsg(err); const char* errmsg=vcg::tri::io::ImporterPLY<CMesh>::ErrorMsg(err);
QMessageBox::warning(this,tr("Error Loading Mesh"),QString(errmsg)); QMessageBox::warning(this,tr("Error Loading Mesh"),QString(errmsg));
} }
initMesh("Loaded \""+fileName+"\"."); initMesh("Loaded \""+fileName+"\".");
} }
void GLArea::loadTetrahedron(){ void GLArea::loadTetrahedron(){
vcg::tri::Tetrahedron(mesh); vcg::tri::Tetrahedron(mesh);
initMesh(tr("Tethraedron [builtin]")); initMesh(tr("Tethraedron [builtin]"));
} }
void GLArea::loadDodecahedron(){ void GLArea::loadDodecahedron(){
vcg::tri::Dodecahedron(mesh); vcg::tri::Dodecahedron(mesh);
initMesh(tr("Dodecahedron [builtin]")); initMesh(tr("Dodecahedron [builtin]"));
} }
void GLArea::initMesh(QString message) void GLArea::initMesh(QString message)
{ {
// update bounding box // update bounding box
vcg::tri::UpdateBounding<CMesh>::Box(mesh); vcg::tri::UpdateBounding<CMesh>::Box(mesh);
// update Normals // update Normals
vcg::tri::UpdateNormal<CMesh>::PerVertexNormalizedPerFace(mesh); vcg::tri::UpdateNormal<CMesh>::PerVertexNormalizedPerFace(mesh);
vcg::tri::UpdateNormal<CMesh>::PerFaceNormalized(mesh); vcg::tri::UpdateNormal<CMesh>::PerFaceNormalized(mesh);
// Initialize the opengl wrapper // Initialize the opengl wrapper
glWrap.m = &mesh; glWrap.m = &mesh;
glWrap.Update(); glWrap.Update();
updateGL(); updateGL();
emit setStatusBar(message); emit setStatusBar(message);
} }
void GLArea::initializeGL () void GLArea::initializeGL ()
{ {
glClearColor(0, 0, 0, 0); glClearColor(0, 0, 0, 0);
glEnable(GL_LIGHTING); glEnable(GL_LIGHTING);
glEnable(GL_LIGHT0); glEnable(GL_LIGHT0);
glEnable(GL_NORMALIZE); glEnable(GL_NORMALIZE);
@ -96,7 +96,7 @@ void GLArea::initializeGL ()
void GLArea::resizeGL (int w, int h) void GLArea::resizeGL (int w, int h)
{ {
glViewport (0, 0, (GLsizei) w, (GLsizei) h); glViewport (0, 0, (GLsizei) w, (GLsizei) h);
initializeGL(); initializeGL();
} }
@ -105,46 +105,46 @@ void GLArea::paintGL ()
glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT); glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
glMatrixMode(GL_PROJECTION); glMatrixMode(GL_PROJECTION);
glLoadIdentity(); glLoadIdentity();
gluPerspective(40, GLArea::width()/(float)GLArea::height(), 0.1, 100); gluPerspective(25, GLArea::width()/(float)GLArea::height(), 0.1, 100);
glMatrixMode(GL_MODELVIEW); glMatrixMode(GL_MODELVIEW);
glLoadIdentity(); glLoadIdentity();
gluLookAt(0,0,5, 0,0,0, 0,1,0); gluLookAt(0,0,5, 0,0,0, 0,1,0);
track.center=vcg::Point3f(0, 0, 0); track.center=vcg::Point3f(0, 0, 0);
track.radius= 1; track.radius= 1;
track.GetView(); track.GetView();
track.Apply(); track.Apply();
glPushMatrix(); glPushMatrix();
float d=1.0f/mesh.bbox.Diag(); float d=2.0f/mesh.bbox.Diag();
vcg::glScale(d); vcg::glScale(d);
glTranslate(-glWrap.m->bbox.Center()); glTranslate(-glWrap.m->bbox.Center());
// the trimesh drawing calls // the trimesh drawing calls
switch(drawmode) switch(drawmode)
{ {
case SMOOTH: case SMOOTH:
glWrap.Draw<vcg::GLW::DMSmooth, vcg::GLW::CMNone,vcg::GLW::TMNone> (); glWrap.Draw<vcg::GLW::DMSmooth, vcg::GLW::CMNone,vcg::GLW::TMNone> ();
break; break;
case POINTS: case POINTS:
glWrap.Draw<vcg::GLW::DMPoints, vcg::GLW::CMNone,vcg::GLW::TMNone> (); glWrap.Draw<vcg::GLW::DMPoints, vcg::GLW::CMNone,vcg::GLW::TMNone> ();
break; break;
case WIRE: case WIRE:
glWrap.Draw<vcg::GLW::DMWire, vcg::GLW::CMNone,vcg::GLW::TMNone> (); glWrap.Draw<vcg::GLW::DMWire, vcg::GLW::CMNone,vcg::GLW::TMNone> ();
break; break;
case FLATWIRE: case FLATWIRE:
glWrap.Draw<vcg::GLW::DMFlatWire, vcg::GLW::CMNone,vcg::GLW::TMNone> (); glWrap.Draw<vcg::GLW::DMFlatWire, vcg::GLW::CMNone,vcg::GLW::TMNone> ();
break; break;
case HIDDEN: case HIDDEN:
glWrap.Draw<vcg::GLW::DMHidden, vcg::GLW::CMNone,vcg::GLW::TMNone> (); glWrap.Draw<vcg::GLW::DMHidden, vcg::GLW::CMNone,vcg::GLW::TMNone> ();
break; break;
case FLAT: case FLAT:
glWrap.Draw<vcg::GLW::DMFlat, vcg::GLW::CMNone,vcg::GLW::TMNone> (); glWrap.Draw<vcg::GLW::DMFlat, vcg::GLW::CMNone,vcg::GLW::TMNone> ();
break; break;
default: default:
break; break;
} }
glPopMatrix(); glPopMatrix();
track.DrawPostApply(); track.DrawPostApply();
} }
void GLArea::keyReleaseEvent (QKeyEvent * e) void GLArea::keyReleaseEvent (QKeyEvent * e)
{ {
@ -174,21 +174,21 @@ void GLArea::mousePressEvent (QMouseEvent * e)
{ {
e->accept (); e->accept ();
setFocus (); setFocus ();
track.MouseDown (e->x (), height () - e->y (), QT2VCG (e->button (), e->modifiers ())); track.MouseDown (QT2VCG_X(this,e), QT2VCG_Y(this,e), QT2VCG (e->button (), e->modifiers ()));
updateGL (); updateGL ();
} }
void GLArea::mouseMoveEvent (QMouseEvent * e) void GLArea::mouseMoveEvent (QMouseEvent * e)
{ {
if (e->buttons ()) { if (e->buttons ()) {
track.MouseMove (e->x (), height () - e->y ()); track.MouseMove (QT2VCG_X(this,e), QT2VCG_Y(this,e));
updateGL (); updateGL ();
} }
} }
void GLArea::mouseReleaseEvent (QMouseEvent * e) void GLArea::mouseReleaseEvent (QMouseEvent * e)
{ {
track.MouseUp (e->x (), height () - e->y (), QT2VCG (e->button (), e->modifiers ())); track.MouseUp (QT2VCG_X(this,e), QT2VCG_Y(this,e), QT2VCG (e->button (), e->modifiers ()));
updateGL (); updateGL ();
} }