Bounding Prism

       Ribbon: View – Visibility Manager >  Bounding Prism

       Menu: View >  Bounding Prism

       Menu: Modify – Clip >  Bounding Prism

       Toolbar: View toolbar >  Bounding Prism

 Command line: MCLIP

For each model or paper space viewport, you can create a bounding prism – an area in a three-dimensional space, beyond which all the graphics are not displayed.

The prism is constructed taking into account the direction of the UCS axes. The upper part of the prism is blue, the lower part is orange. A gray outline of the prism is displayed in the XY plane of the current UCS.

The prism can be created by specifying a contour on the screen (rectangular or polygonal), on the basis of an existing polyline or based on a bounding box of selected objects.

The created prism can be stretched, compressed, and resized by dragging edges and faces.

So, you can grab any area of the face and move it along its normal (in the case of a rectangular prism) or in any direction (in the case of a polygonal prism). Hidden faces can be moved by grabbing one of their edges. Snaps and orthographic drawing modes can be used.

The entire prism can be dragged while holding down CTRL.

A bounding prism is created for each viewport. It will not restrict the image in other viewports.

At the time of creating or editing a prism, it is displayed in all viewports, but its effect only applies to the screen in which it was created or was selected for editing. When you finish adjusting the prism, it will crop the image only in the viewport for which it was created.

To create a new or edit an existing prism, go to the desired viewport and run the Bounding prism command.

While editing a prism, you can switch to another viewport to continue editing it from a more comfortable angle. At the same time, editing of the prism that belongs to the previous viewport (in which the Bounding Prism Bounding prism command was run) will continue in the new viewport, and not the current one. A prism in its own viewport is displayed more vividly than in the others so that it is always clear which viewport it belongs to, regardless of which viewport is currently active.

When saving a document, prisms are also saved for their viewports.

An existing prism can be deleted or enabled/disabled. If the prism is disabled, graphics outside the prism become visible. Disabled prism object is still present in the model space and can be switched on later.

Options:

Options for creating a new prism:

Options appear when there is no prism in the viewport or when New option is selected.