Excuse me, how to convert CAD three-dimensional into three-dimensional view? There is a way to load hidden lines, so that dotted lines will be projected automatically, which is what I need.

1. The steps to use the flatshot command are as follows:

1. Sets the view of the 3D model, such as the top view.

2. At the command prompt, enter flatshot.

3. In the Plane Photography dialog box, under Target, click one of the options. Change the color and line type settings of Foreground Line and Blurred Line (that is, the line type required to load hidden lines here). Click "Create".

4. Specify the insertion point of the block on the screen. Adjust the base point, scale and rotation angle if necessary.

Creates a block consisting of two-dimensional geometry projected onto the XY plane of the current UCS.

Second, use the "solprof" command.

1. Activate the viewport in the layout to set the view of the 3D model, such as the top view.

2. At the command prompt, enter solprof.

3. At the command prompt, press enter three times, and then select the default value.

4. In this way, a plane outline map is generated, which is located on two floors. The layer at the beginning of PH- is the hidden line layer, and the layer at the beginning of PV- is the visible layer. You can use the Layer Properties Manager to set the required linetype, and the viewport will freeze the layers that don't need to be displayed.

The lower version of CAD can only use the second method, and the version after 2008 can use both methods.