Using 3D Clipping to Maintain Good Visibility

3D Clipping in the main window

The 3D Clipping tool helps maintain good visibility when drawing by hiding objects that obscure your view while designing. An easy and accessible way to use the clipping tool is from the 2D view toolbar:

Use the tool to draw a rectangle around the objects that you wish to show, and your selection is then sent to the Photo Lab. If you want the clipping to be even more precise, you will also find it in the 3D component tab. Basically, it uses negative and positive rectangles to either hide or show objects in the drawing area:


Negative rectangles (blue) hide objects that are fully included, while positive rectangles (green) show objects that are touched by the rectangle. Here is an example shown in both 2D and 3D:


After selecting which rectangle you wish to use, move the mouse pointer to the drawing area. Click the rectangle in place and stretch it to the desired size.


  • As long as there only are positive rectangles in the drawing area, CET Designer automatically assumes that you want to hide everything else (i.e. as if you had placed one large hide rectangle covering the entire drawing). This is intended to make it easier to quickly show only a small selection of objects, without having to first place a hide rectangle.
  • The rectangles are visible in both the 2D and 3D views and when they overlap, positive ones always predominates negative ones.
  • In the main window, the 3D clipping is only available with the advanced graphics engine.


Here is a short video showing just how to use the 3D Clipping found on the 3D component tab:


3D Clipping in Photo Lab

3D clipping can also be used in Photo Lab to control what will be visible in renderings. The 3D clipping in the main window is not synchronized with the 3D clipping in the Photo Lab. The only situation where the 3D clipping has any connection to the Photo Lab is when a View Render has been completed and the shortcut button to send the rendering to the Photo Lab is used. In that case, the 3D clipping in use will also be transferred to the Photo Lab. However, to be able to access the 3D clipping in Photo Lab, you have to switch to 2D:


  • Every photo in the photo series owns its 3D clips. This means that each photo can have its own unique clipping settings.
  • In the Photo Lab, the 3D clipping is available with both the simple and advanced graphics engines.

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