216 lines
7.2 KiB
C++
216 lines
7.2 KiB
C++
/****************************************************************************
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**
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** Copyright (C) 2011 Nokia Corporation and/or its subsidiary(-ies).
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** All rights reserved.
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** Contact: Nokia Corporation (qt-info@nokia.com)
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**
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** This file is part of the examples of the Qt Toolkit.
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**
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** $QT_BEGIN_LICENSE:BSD$
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** You may use this file under the terms of the BSD license as follows:
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**
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** "Redistribution and use in source and binary forms, with or without
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** modification, are permitted provided that the following conditions are
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** met:
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** * Redistributions of source code must retain the above copyright
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** notice, this list of conditions and the following disclaimer.
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** * Redistributions in binary form must reproduce the above copyright
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** notice, this list of conditions and the following disclaimer in
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** the documentation and/or other materials provided with the
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** distribution.
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** * Neither the name of Nokia Corporation and its Subsidiary(-ies) nor
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** the names of its contributors may be used to endorse or promote
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** products derived from this software without specific prior written
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** permission.
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**
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** THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
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** "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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** LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
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** A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
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** OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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** SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
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** LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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** DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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** THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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** (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
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** OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE."
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** $QT_END_LICENSE$
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**
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****************************************************************************/
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#include "glwidget.h"
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#include <wrap/qt/trackball.h>
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#include <wrap/gl/picking.h>
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#include <wrap/qt/anttweakbarMapper.h>
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TwBar *bar;
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char * filename;/// filename of the mesh to load
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CMesh mesh; /// the active mesh instance
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vcg::GlTrimesh<CMesh> glWrap; /// the active mesh opengl wrapper
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vcg::Trackball track; /// the active manipulator
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GLW::DrawMode drawmode=GLW::DMFlatWire; /// the current drawmode
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void TW_CALL loadTetrahedron(void *){
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vcg::tri::Tetrahedron(mesh);
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vcg::tri::UpdateBounding<CMesh>::Box(mesh);
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vcg::tri::UpdateNormal<CMesh>::PerVertexNormalizedPerFace(mesh);
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vcg::tri::UpdateNormal<CMesh>::PerFaceNormalized(mesh);
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glWrap.m = &mesh;
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glWrap.Update();
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}
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void TW_CALL loadMesh(void *)
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{
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if(filename==0) return;
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int err=vcg::tri::io::ImporterPLY<CMesh>::Open(mesh,(char*)filename);
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if(err==ply::E_NOERROR)
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{
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vcg::tri::UpdateBounding<CMesh>::Box(mesh);
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vcg::tri::UpdateNormal<CMesh>::PerVertexNormalizedPerFace(mesh);
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vcg::tri::UpdateNormal<CMesh>::PerFaceNormalized(mesh);
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glWrap.m = &mesh;
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glWrap.Update();
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}
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}
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GLWidget::GLWidget(QWidget *parent)
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: QGLWidget(QGLFormat(QGL::SampleBuffers), parent)
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{
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filename=0;
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hasToPick=false;
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setWindowTitle(tr("Hello GL"));
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bar = TwNewBar("TweakBar");
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TwCopyCDStringToClientFunc (CopyCDStringToClient);
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TwAddVarRW(bar,"Input",TW_TYPE_CDSTRING, &filename," label='Filepath' group=SetMesh help=` Name of the file to load` ");
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TwAddButton(bar,"Load from file",loadMesh,0, " label='Load Mesh' group=SetMesh help=`load the mesh` ");
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TwAddButton(bar,"Use tetrahedron",loadTetrahedron,0, " label='Make Tetrahedron' group=SetMesh help=`use tetrahedron.` ");
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// ShapeEV associates Shape enum values with labels that will be displayed instead of enum values
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TwEnumVal drawmodes[6] = { {GLW::DMSmooth, "Smooth"}, {GLW::DMPoints, "Per Points"}, {GLW::DMWire, "Wire"}, {GLW::DMFlatWire, "FlatWire"},{GLW::DMHidden, "Hidden"},{GLW::DMFlat, "Flat"}};
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// Create a type for the enum shapeEV
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TwType drawMode = TwDefineEnum("DrawMode", drawmodes, 6);
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// add 'g_CurrentShape' to 'bar': this is a variable of type ShapeType. Its key shortcuts are [<] and [>].
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TwAddVarRW(bar, "Draw Mode", drawMode, &drawmode, " keyIncr='<' keyDecr='>' help='Change draw mode.' ");
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}
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void GLWidget::initializeGL ()
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{
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glewInit();
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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 GLWidget::resizeGL (int w, int h)
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{
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glViewport (0, 0, (GLsizei) w, (GLsizei) h);
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TwWindowSize(w, h);
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initializeGL();
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}
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void GLWidget::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, GLWidget::width()/(float)GLWidget::height(), 0.1, 100);
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glMatrixMode(GL_MODELVIEW);
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glLoadIdentity();
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gluLookAt(0,0,3.5f, 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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glPushMatrix();
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track.Apply();
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glPushMatrix();
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if(mesh.vert.size()>0)
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{
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vcg::glScale(2.0f/mesh.bbox.Diag());
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glTranslate(-mesh.bbox.Center());
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glWrap.Draw(GLW::DrawMode(drawmode),GLW::CMNone,GLW::TMNone);
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}
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glPopMatrix();
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track.DrawPostApply();
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glPopMatrix();
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if(hasToPick)
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{
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hasToPick=false;
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Point3f pp;
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if(Pick<Point3f>(pointToPick[0],pointToPick[1],pp))
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{
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track.Translate(-pp);
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track.Scale(1.25f);
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QCursor::setPos(mapToGlobal(QPoint(width()/2+2,height()/2+2)));
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}
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}
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TwDraw();
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}
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void GLWidget::keyReleaseEvent (QKeyEvent * e)
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{
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e->ignore ();
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if (e->key () == Qt::Key_Control) track.ButtonUp (QT2VCG (Qt::NoButton, Qt::ControlModifier));
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if (e->key () == Qt::Key_Shift) track.ButtonUp (QT2VCG (Qt::NoButton, Qt::ShiftModifier));
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if (e->key () == Qt::Key_Alt) track.ButtonUp (QT2VCG (Qt::NoButton, Qt::AltModifier));
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updateGL ();
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}
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void GLWidget::keyPressEvent (QKeyEvent * e)
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{
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e->ignore ();
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if (e->key () == Qt::Key_Control) track.ButtonDown (QT2VCG (Qt::NoButton, Qt::ControlModifier));
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if (e->key () == Qt::Key_Shift) track.ButtonDown (QT2VCG (Qt::NoButton, Qt::ShiftModifier));
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if (e->key () == Qt::Key_Alt) track.ButtonDown (QT2VCG (Qt::NoButton, Qt::AltModifier));
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TwKeyPressQt(e);
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updateGL ();
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}
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void GLWidget::mousePressEvent (QMouseEvent * e)
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{
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if(!TwMousePressQt(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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}
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updateGL ();
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}
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void GLWidget::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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TwMouseMotion(e->x (), e->y ());
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}
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void GLWidget::mouseDoubleClickEvent (QMouseEvent * e)
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{
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hasToPick=true;
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pointToPick=Point2i(e->x(),height()-e->y());
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updateGL ();
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}
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void GLWidget::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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TwMouseReleaseQt(e);
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updateGL ();
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}
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void GLWidget::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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