Wsrtjtyk

I'm a newbie in using cgal , I tried the following example :

#include <QGuiApplication>

#include <QQmlApplicationEngine>



#include <CGAL/Exact_predicates_inexact_constructions_kernel.h>

#include <CGAL/Polyhedron_3.h>

#include <CGAL/IO/Polyhedron_iostream.h>

#include <CGAL/draw_polyhedron.h>

#include <fstream>





typedef CGAL::Exact_predicates_inexact_constructions_kernel  Kernel;

typedef CGAL::Polyhedron_3<Kernel>                       Polyhedron;

int main(int argc, char *argv)

{



    QCoreApplication::setAttribute(Qt::AA_EnableHighDpiScaling);



    QGuiApplication app(argc, argv);



    Polyhedron P;

    std::ifstream in1((argc>1)?argv[1]:"data/bones.off");

    in1 >> P;

    CGAL::draw(P);

    return app.exec();

}

.pro file :

QT += quick opengl

CONFIG += c++11

QT +=xml widgets



# The following define makes your compiler emit warnings if you use

# any feature of Qt which as been marked deprecated (the exact warnings

# depend on your compiler). Please consult the documentation of the

# deprecated API in order to know how to port your code away from it.

DEFINES += QT_DEPRECATED_WARNINGS



# You can also make your code fail to compile if you use deprecated APIs.

# In order to do so, uncomment the following line.

# You can also select to disable deprecated APIs only up to a certain version of Qt.

#DEFINES += QT_DISABLE_DEPRECATED_BEFORE=0x060000    # disables all the APIs deprecated before Qt 6.0.0



SOURCES += 

        main.cpp



RESOURCES += qml.qrc



# Additional import path used to resolve QML modules in Qt Creator's code model

QML_IMPORT_PATH =



# Additional import path used to resolve QML modules just for Qt Quick Designer

QML_DESIGNER_IMPORT_PATH =



# Default rules for deployment.

qnx: target.path = /tmp/$${TARGET}/bin

else: unix:!android: target.path = /opt/$${TARGET}/bin

!isEmpty(target.path): INSTALLS += target







unix:!macx: LIBS += -L$$PWD/../../CGAL-4.13/lib/ -lCGAL_Core



INCLUDEPATH += $$PWD/../../CGAL-4.13/include

DEPENDPATH += $$PWD/../../CGAL-4.13/include



unix:!macx: LIBS += -L$$PWD/../../CGAL-4.13/lib/ -lCGAL



INCLUDEPATH += $$PWD/../../CGAL-4.13/include

DEPENDPATH += $$PWD/../../CGAL-4.13/include



unix:!macx: LIBS += -L$$PWD/../../CGAL-4.13/lib/ -lCGAL_Qt5



INCLUDEPATH += $$PWD/../../CGAL-4.13/include

DEPENDPATH += $$PWD/../../CGAL-4.13/include



QMAKE_CXXFLAGS +=-DCGAL_USE_BASIC_VIEWER

LIBS+=-DCGAL_USE_BASIC_VIEWER









unix:!macx: LIBS += -L$$PWD/../../CGAL-4.13/lib/ -lCGAL_ImageIO



INCLUDEPATH += $$PWD/../../CGAL-4.13/include

DEPENDPATH += $$PWD/../../CGAL-4.13/include







unix:!macx: LIBS += -L$$PWD/../../../../lib64/ -lQt5Xml



INCLUDEPATH += $$PWD/../../../../lib64

DEPENDPATH += $$PWD/../../../../lib64





unix:!macx: LIBS += -L$$PWD/../../../../lib64/ -lQt5OpenGL



INCLUDEPATH += $$PWD/../../../../lib64

DEPENDPATH += $$PWD/../../../../lib64



unix:!macx: LIBS += -L$$PWD/../../../../lib64/ -lgmp



INCLUDEPATH += $$PWD/../../../../lib64

DEPENDPATH += $$PWD/../../../../lib64







unix:!macx: LIBS += -L$$PWD/../../../../lib64/ -lboost_system



INCLUDEPATH += $$PWD/../../../../lib64

DEPENDPATH += $$PWD/../../../../lib64

the source of example : https://doc.cgal.org/latest/Polyhedron/Polyhedron_2draw_polyhedron_8cpp-example.html#a2

the problem is it shows black viewer , I don't know what's the problem

I'm using qt-creator on Fedora OS
any help ,please?