OpenCascade 6.7.1 and Qt 5
Keywords: OpenCascade 6.7.1, Qt5, Demo
从OpenCascade6.7.0开始图形显示的初始化部分有较大改动，将原来给出的一个关于Qt的最简单的例子程序升级到最新版本：
Qt with OpenCascade: http://www.cppblog.com/eryar/archive/2013/08/18/202617.html
Qt的版本还是原来的，OpenCascade使用最新版本OpenCascade6.7.1:
Figure 1. OpenCascade Version info
主要是更改显示部分初始化部分的代码，如下所示，
void
occQt::InitializeModeler(
void
)
{
Handle_Aspect_DisplayConnection displayConnection;
Handle_Graphic3d_GraphicDriver graphicDriver;
// 1. Create a 3D viewer.
try
{
// myGraphicDevice = new Graphic3d_WNTGraphicDevice;
graphicDriver = Graphic3d::InitGraphicDriver(displayConnection);
}
catch (Standard_Failure)
{
QMessageBox::critical( this , tr( " About occQt " ),
tr( " <h2>Fatal error in graphic initialisation!</h2> " ),
QMessageBox::Apply);
}
myViewer = new V3d_Viewer(graphicDriver, Standard_ExtString( " Visu3D " ));
// myViewer->Init();
myViewer -> SetDefaultLights();
myViewer -> SetLightOn();
// 3. Create an interactive context.
myContext = new AIS_InteractiveContext(myViewer);
myContext -> SetDisplayMode(AIS_Shaded);
}
{
Handle_Aspect_DisplayConnection displayConnection;
Handle_Graphic3d_GraphicDriver graphicDriver;
// 1. Create a 3D viewer.
try
{
// myGraphicDevice = new Graphic3d_WNTGraphicDevice;
graphicDriver = Graphic3d::InitGraphicDriver(displayConnection);
}
catch (Standard_Failure)
{
QMessageBox::critical( this , tr( " About occQt " ),
tr( " <h2>Fatal error in graphic initialisation!</h2> " ),
QMessageBox::Apply);
}
myViewer = new V3d_Viewer(graphicDriver, Standard_ExtString( " Visu3D " ));
// myViewer->Init();
myViewer -> SetDefaultLights();
myViewer -> SetLightOn();
// 3. Create an interactive context.
myContext = new AIS_InteractiveContext(myViewer);
myContext -> SetDisplayMode(AIS_Shaded);
}
增加了个变换的示例，程序运行效果如下图所示：
Figure 2. Transformation in occQt
Sample code for OpenCascade6.7.1: Qt with OpenCascade
