Module: Free Slice ()

Description:

The Free Slice module enables display of arbitrarily oriented slices in a seismic volume. This is a specialized Slice module provided for convenience in seismic visualizations (see also Inline, Crossline, and Time Slice). The mapping type is set by default to Colormap (an external seismic colormap is used).

Connections:

Data [required]
The seismic volume data object to be visualized. See Seismic Volume Data Object.

Colormap [optional]
The colormap used for mapping (Amplitude_BlueBrownRed.am by default). See also Colormap.

Ports:

Orientation

This port provides three buttons for resetting the slice orientation.

Options

If the adjust view toggle is set (set by default), the camera of the selected viewer is reset each time a new slice orientation is selected.

With the rotate toggle you can switch the rotate handle for the free slice on and off.

If the immediate toggle is set, the slice is updated every time you drag it with the mouse in the 3D viewer. Otherwise, only the bounding box of the free slice is moved and the update takes place when the mouse button is released.

The fit to points toggle lets you reset the free slice plane by clicking on at least 3 different points in the scene. After enabling this toggle, you should switch to interaction mode by pressing the ESC key inside the viewer. Then click 3 times at different points on any geometry in the scene. The free slice will then be automatically adjusted to match these points. The virtual trackball - visible when the rotate toggle is active - will be moved to the center of the picked points. After 3 points have been picked, this toggle is automatically unchecked, unless you pressed the shift key. Shift-clicking allows you to select more than 3 points. In this case the plane that best fits the selected points will be computed.

If the lighting toggle is set, the slice is lit.

Slice Options

If equal resolution is set (unset by default), all slices are drawn using the same resolution. You can toggle lighting on or off.

Interpolation

Specifies the interpolation type (nearest value or linear interpolation).

Mapping Type

This option menu controls how scalar values are mapped to screen colors. A Colormap can be used to activate pseudo-coloring. The mapping type is set by default to Colormap.

Colormap

This port is displayed if Colormap is selected. Choose a colormap to map data to colors (connected to Amplitude_BlueBrownRed.am by default).

Translate

This slider allows you to select different slices. The slices may also be picked with the mouse and dragged directly in the 3D viewer.

Transparency

This radio box port determines the transparency of the slice. None means that the slice is fully opaque. Binary means that black parts are fully transparent while other parts are opaque. Alpha means that opacity is taken as is.

Embossing

Enables/disables embossing. This rendering technique (also known as "bump mapping") emphasizes gradient changes in the data on the slice. Note that this feature requires programmable shader support in the graphics hardware.

Embossing Factor

This port is displayed if embossing is enabled and specifies the intensity of the embossing effect. Default value is 0 (no embossing). Values can be positive or negative. Note that this feature requires programmable shader support in the graphics hardware.