filename = f'ais_data_hour_{hour}.csv'
时间: 2023-06-11 21:07:59 浏览: 51
这段代码是使用 f-string 格式化字符串,将 hour 变量的值嵌入到字符串中,生成一个文件名。在这个例子中,生成的文件名是以字符串 'ais_data_hour_' 开头,后面紧跟着 hour 变量的值,并以字符串 '.csv' 结尾。这个文件名可以用来创建或打开一个 CSV 格式的文件,以进行读写操作。
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AIS_InteractiveContext how to use
AIS_InteractiveContext is a class in Open CASCADE Technology (OCCT) that provides an interactive 3D viewer for displaying and manipulating 3D models. Here is an example of how to use it:
1. Create a window and a view:
```
Handle(Aspect_DisplayConnection) aDispConnection = new Aspect_DisplayConnection();
Handle(Aspect_Window) aWindow = new Aspect_Window(aDispConnection, "My Window", 0, 0, 640, 480);
Handle(V3d_Viewer) aViewer = new V3d_Viewer(aWindow);
```
2. Create an interactive context:
```
Handle(AIS_InteractiveContext) anInteractiveContext = new AIS_InteractiveContext(aViewer);
```
3. Load a 3D model:
```
Handle(AIS_Shape) aShape = new AIS_Shape(aSolid);
anInteractiveContext->Display(aShape, Standard_True);
```
4. Start the interactive viewer:
```
while(!aViewer->IsDone())
{
aViewer->Redraw();
}
```
This will display the 3D model and allow the user to interact with it using mouse and keyboard controls. You can also add more functionality, such as selecting and highlighting parts of the model, by using the methods provided by AIS_InteractiveContext.
OCC中AIS_Shape如何设置透明度
在 OCC中,可以使用AIS_Shape类中的方法SetTransparency()来设置AIS_Shape对象的透明度。该方法需要一个0到1之间的实数作为参数,其中0表示完全不透明,1表示完全透明。例如,以下代码将AIS_Shape对象的透明度设置为50%:
```cpp
Handle(AIS_Shape) myAIS_Shape = ...; // 获取AIS_Shape对象的句柄
myAIS_Shape->SetTransparency(0.5); // 设置透明度为50%
```
注意:如果要使用透明度,需要在创建AIS_Shape对象时将其渲染模式设置为Graphic3d_TOM_TRANSPARENT。例如:
```cpp
Handle(AIS_Shape) myAIS_Shape = new AIS_Shape(myShape);
myAIS_Shape->Attributes()->SetFaceBoundaryDraw(false);
myAIS_Shape->Attributes()->SetDisplayMode(Graphic3d_TOM_TRANSPARENT);
```