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Clipping planes and ortho planes in Display settings provide The Clipping & Ortho Planes section provides tools that let you clip, or hide, a portion portions of the display displayed volume. This tool is These tools are especially useful for visualizing the interior regions of datasets that are too opaque to visualize in normal 3D display mode.

Interface

The clipping planes and ortho planes Clipping & Ortho Planes tool is found in the Display settings panel in Aivia below the in 3D Display Options panel. The table header contains controls for adding or , removing, and resetting planes as well as toggling and setting the color of Clipping Caps. Each clipping/ortho plane has its own table row represents a single instance of the clipping plane or ortho slice with tools and options that are applied to the specified instancefor the specific plane. An example of the clipping plane display Clipping & Ortho Planes table is shown below:.

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Table header

The table header contains descriptions for each column on in the display table as well as global options for adding and removing the planes. The four (4) buttons are:, removing, and resetting planes as well as toggling and setting the color of Clipping Caps. The buttons in the table header are described in the table below.

Name	Icon	Description
Add new clipping planeClipping Plane		Adds a new clipping plane to the display
Add new ortho slicerOrtho Plane		Adds a new ortho slice plane to the display
Reset plane positionPlane Position		Resets the position of the selected plane back to the center of the scene
Delete selected planeSelected Plane		Removes the selected plane from the display
Delete All Planes	Image Added	Removes all planes from the display
Toggle Clipping Caps	Image Added	Toggles the display of Clipping Caps, which are colored areas where mesh interiors intersect the plane Clipping Caps cannot be used with transparent meshes.
Set Clipping Caps Color	Image Added	Opens a color picker from which the color of the Clipping Caps can be selected

Table row

Each table row represents a single clipping/ortho plane or ortho slice on the display displayed image has a table row. Options in each row (see the table below) can be used to independently control the behavior of each clipping/ortho plane. The effects of the clipping plane is planes are cumulative when the multiple planes are toggled on. Each row can be controlled independently to customize the behavior for each clipping plane or ortho slice. There are six (6) controls: 

Name	Icon	Description
Show expanded optionsExpanded Options		Shows expanded clipping plane options for precise positioning of the clipping plane
Show/hide clipping planeHide Clipping Plane		Toggles the display of the clipping plane; when the clipping plane is hidden, it will is not be used for clipping away portions of the displayed scene
Flip clipping planeClipping Plane		Flips the face that which side of the clipping plane is shown and which side is clipped away in the display
Plane orientationOrientation		Specifies the translation axis for the selected clipping plane, ; there are four (4) options: Along Along the X axis Along Along the Y axis Along Along the Z axis Advanced Advanced or free orientation
Toggle volume clippingVolume Clipping		Toggles clipping of the volume rendering (i.e. channel display) by the specified plane
Toggle mesh clippingMesh Clipping		Toggles clipping of the mesh/surface rendering (i.e. objects) by the specified plane

Additionally, a slider is provided on in each table row that lets you adjust the relative position of the clipping/ortho plane or ortho slice along the specified axis.

On-

view control

Each clipping plane and ortho slicer also contains an on-screen /ortho plane can be adjusted in the Image Viewer with a control widget that lets you move the clipping plane along the specified axis. When you mouse over the control, it will become highlighted in The clipping/ortho plane must be selected in the Clipping & Ortho Planes table for its widget to be shown. The row of the selected plane is blue in the table, and the selected plane has a red border in the Image Viewer. Deselect a plane in the Clipping & Ortho Planes table to hide its widget and border. Basic Widgets with one (1) control are available for planes with the Plane Orientation set as X, Y, or Z, and Advanced Widgets with nine (9) controls are available for planes with the Plane Orientation set as Advanced. When you mouse over a widget control, it turns white to indicate the selected control. There are two (2) different control widgets - basic and advanced, which are shown below (click to expand):

Basic

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The red arrow is always orthogonal to the clipping plane (i.e. pointing away from the plane) and is used for translating the clipping plane along the 3D volume.

The widget is accompanied by a red boundary along the edge of the 3D display to indicate the position of the clipping plane on screen. To hide the display of the widget and the plane, click on the table row to de-select it.

Widget

The Basic Widget allows you to translate the clipping/ortho plane along the axis that is orthogonal to the plane, which is the same as the axis indicated in the Axis column of the Clipping & Ortho Planes table for the selected clipping/ortho plane.

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Basic Widget

Advanced Widget

The Advanced Widget allows you to set the position and orientation of the clipping/ortho plane when its Plane Orientation is set as Advanced. 

Using clipping and ortho planes

To add a clipping plane, click on the Add new clipping plane Clipping Plane icon  icon on in the table header. The clipping plane will be is added to the display with portions of the scene clipped away (see right, click to enlarge).

To add an ortho plane, click on the Add Ortho Plane icon Image Added.

Adjust plane position

To adjust If the position Plane Orientation of the clipping/ortho plane , left click and drag red arrow on screen to move the plane along the axis of the red arrow.

Alternately, you can also adjust the position by left click and dragging the slider on the table row of the selected clipping plane to position the plane.

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For precise positioning of the clipping plane at a known voxel location, you can expand the table row by clicking on the Expand Image Removed icon to show the Position textbox. Enter the plane position value into the textbox and press Enter to confirm.

is set as X, Y, or Z, the position of the clipping/ortho plane can be adjusted using the on-view Basic Widget, slider in the plane's table row, or Position textbox in the expanded plane options.

If the Plane Orientation of the clipping/ortho plane is set as Advanced, the position of the clipping/ortho plane can be adjusted using the on-view Advanced Widget or Position textboxes in the expanded plane options. There is no slider in the plane's table row when the Plane Orientation is Advanced.

Ortho-plane thickness can be adjusted using the Thickness textbox in the expanded plane options.

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Toggle mesh and volume clipping

You can toggle clipping of the displayed channel, objects, or both by clicking on the 

Volume icon Image Modified 

and/or Mesh icon Image Modified 

in the table row of the clipping

/ortho plane. A comparison of the

clipping modes

is shown below:

You can specify different display types (volume or mesh) to clip the clipping mode for each clipping/ortho plane independently to customize the display of the clipped scene in the 3D viewView.

Flip display clipping

You can specify which face the side of a clipping plane clips to clip away by clicking on the Flip Image Removed icon to toggle which side of the clipping plane to remove from the displayFlip Clipping Plane icon Image Added. A blue bounding box surrounding the Flip Clipping Plane icon on in the table row indicates that the clipping plane is flipped from its default orientation.By  By default, the clipping plane hides the portion of the image that is closer to the image origin (0,0,0) and progressively hiding those further away. When flip is toggled, the clipping plane will preserve the display that is closer to the origin and progressively hiding as the plane approaches the origin.See see the figures to the right for a comparison between flipped and unflipped clipping display.The orientation of the on-screen controls are also flipped when flip is enabled so that it is possible to manipulate the clipping plane controlsnon-flipped clipping displays).

Toggle Clipping Caps

You can toggle Clipping Caps using the Toggle Clipping Caps icon Image Added to fill the regions where meshes intersect the clipping/ortho plane with a solid color (see the figure to the right). You can specify the color of the Clipping Caps by clicking on the Set Clipping Caps Color icon Image Added and then selecting the desired color from the color picker. You may not show Clipping Caps while any meshes have greater than 0% transparency.