add vcglib
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/****************************************************************************
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* MeshLab o o *
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* An extendible mesh processor o o *
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* _ O _ *
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* Copyright(C) 2005, 2009 \/)\/ *
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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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#ifndef VCG_WRAP_QT_GLLABEL_H
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#define VCG_WRAP_QT_GLLABEL_H
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#include <QMessageBox>
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#include <wrap/qt/col_qt_convert.h>
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#include <wrap/qt/device_to_logical.h>
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#include <wrap/qt/checkGLError.h>
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#include <QPainter>
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namespace vcg
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{
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/*
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*/
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class glLabel
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{
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public:
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class Mode
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{
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public:
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Mode()
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{
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init();
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}
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Mode(Color4b _color)
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{
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init();
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color=_color;
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}
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void init()
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{
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color=vcg::Color4b(vcg::Color4b::White);
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angle=0;
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rightAlign = false;
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qFont.setStyleStrategy(QFont::NoAntialias);
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qFont.setFamily("Helvetica");
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qFont.setPixelSize(12);
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}
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Mode(QFont &_qFont, vcg::Color4b _color, float _angle,bool _rightAlign)
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{
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qFont=_qFont;
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color=_color;
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angle=_angle;
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rightAlign=_rightAlign;
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}
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float angle;
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bool rightAlign;
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vcg::Color4b color;
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QFont qFont;
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};
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private:
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static void enter2D(QPainter *painter)
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{
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glPushAttrib(GL_ENABLE_BIT|GL_VIEWPORT_BIT);
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glDisable(GL_DEPTH_TEST);
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glMatrixMode(GL_PROJECTION);
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glPushMatrix();
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glMatrixMode(GL_MODELVIEW);
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glPushMatrix();
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painter->endNativePainting();
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painter->save();
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}
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static void exit2D(QPainter *painter)
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{
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//checkGLError::qDebug("glLabel");
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painter->restore();
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painter->beginNativePainting();
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glMatrixMode(GL_PROJECTION);
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glPopMatrix();
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glMatrixMode(GL_MODELVIEW);
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glPopMatrix();
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glPopAttrib();
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}
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public:
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enum LabelPosition { TOP_LEFT, TOP_RIGHT, BOTTOM_LEFT, BOTTOM_RIGHT} ;
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static void render2D(QPainter *painter, const LabelPosition pos, const QString &text, const Mode &m=Mode())
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{
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render2D(painter,pos,0,text,m);
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}
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static void render2D(QPainter *painter, const LabelPosition pos, int linePos, const QString &text, const Mode &m=Mode())
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{
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Mode lm = m;
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if(pos == TOP_RIGHT || pos == BOTTOM_RIGHT)
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lm.rightAlign=true;
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GLint view[4];
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glGetIntegerv(GL_VIEWPORT, view);
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QFontMetrics qfm(m.qFont);
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float delta = qfm.ascent()/2;
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switch(pos)
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{
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case TOP_LEFT : render2D(painter,vcg::Point2f(delta, view[3]-3*delta - delta*3*linePos),text,lm); break;
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case TOP_RIGHT : render2D(painter,vcg::Point2f(view[2]-delta, view[3]-3*delta - delta*3*linePos),text,lm); break;
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case BOTTOM_LEFT : render2D(painter,vcg::Point2f(delta, 3*delta + delta*3*linePos),text,lm); break;
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case BOTTOM_RIGHT : render2D(painter,vcg::Point2f(view[2]-delta, 3*delta + delta*3*linePos),text,lm); break;
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}
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}
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/*
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*/
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static void render2D(QPainter *painter, const vcg::Point2f &p, const QString &text, const Mode &m)
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{
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GLint view[4];
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glGetIntegerv(GL_VIEWPORT, view);
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QFontMetrics qfm(m.qFont);
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QRect textBox = qfm.boundingRect(text);
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glLabel::enter2D(painter);
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painter->setRenderHint(QPainter::TextAntialiasing);
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painter->setPen(vcg::ColorConverter::ToQColor(m.color));
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painter->setFont(m.qFont);
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painter->translate(QPointF(p[0],view[3]-p[1]));
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painter->rotate(m.angle);
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QPoint base(0,qfm.ascent()/2);
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if(m.rightAlign)
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base.setX(-textBox.width() -qfm.maxWidth());
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painter->drawText(base,text);
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glLabel::exit2D(painter);
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glViewport(view[0],view[1],view[2],view[3]);
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}
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static void render(QPainter *painter, const vcg::Point3f &p, const QString &text)
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{
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Mode m;
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render(painter,p,text,m);
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}
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static void render(QPainter *painter, const vcg::Point3f &p, const QString &text, const Mode &m)
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{
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GLdouble model[16];
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GLdouble proj[16];
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GLint view[4];
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glGetDoublev(GL_MODELVIEW_MATRIX, model);
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glGetDoublev(GL_PROJECTION_MATRIX, proj);
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glGetIntegerv(GL_VIEWPORT, view);
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GLdouble winx,winy,winz;
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gluProject(p[0],p[1],p[2],model,proj,view,&winx,&winy,&winz);
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QFontMetrics qfm(m.qFont);
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QRect textBox = qfm.boundingRect(text);
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glLabel::enter2D(painter);
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painter->setRenderHint(QPainter::TextAntialiasing);
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painter->setPen(vcg::ColorConverter::ToQColor(m.color));
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painter->setFont(m.qFont);
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painter->translate(QPointF(QTDeviceToLogical(painter,winx),
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QTDeviceToLogical(painter,view[3]-winy)));
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painter->rotate(m.angle);
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QPoint base(0,qfm.ascent()/2);
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if(m.rightAlign)
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base.setX(-textBox.width() -qfm.maxWidth());
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painter->drawText(base,text);
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glLabel::exit2D(painter);
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}
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static void render(QPainter *painter, const vcg::Point3d &p, const QString &text)
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{ render(painter,Point3f::Construct(p),text); }
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static void render(QPainter *painter, const vcg::Point3d &p, const QString &text, const Mode &m)
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{ render(painter,Point3f::Construct(p),text,m); }
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};
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} // end namespace
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#endif
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