Edit Menu Help in the DAVE master widget

Edit Map

Pops up a widget which allows the color maps to be modified. This is useful when displaying data mapped to an object surface in greyscale. For specialized (non-manipulatable) color maps see LoadMap under the Goodies menu.

Edit Objects

This widget controls which objects are displayed, whether they are in shown in wireframe or surface mode, and whether they are shaded or have image data mapped to their surface. It is automatically generated if a pts file is specified on the dave command line.

Edit Data Planes

This widget is useful if you want to display XY, YZ, or XZ planes of volume data. It also allows one arbitrarily oriented plane through the volume.

Edit Bkgnd Colors

This widget changes the background viewing window color. Click on a color to select it. Click on the arrows to get more colors. Sometimes a selected color is not available.

Edit Surface Data

This widget allows a region (or point) on an object surface to be specified. This region is outlined. The region may then be translated to a new position. Thus if a surface is not quite what you want it can be changed.

Edit Volume Data

This widget controls which image data sets are displayed, their brightness and opacity, their color, and (via its Volume Clipping subwidget) the subset of interest to display. It is automatically generated if an image file is specified on the dave command line. Menu options permit the rendering mode to be changed from the default to Cubes (which displays each voxel as a cube; this is particularly useful when looking at a small subset of the data in a Snoops window, see Snoops in the Goodies menu on the DAVE Master Widget).

Edit 3D Grid

Allows a grid of straight lines to be displayed. The grid spacing and color can be manipulated. This is useful for visualizing the curvature of an object or its change in position over time. By default the grid encompasses the maximum range of the image data dimensions. If "V. Sliders" is chosen then the grid encompasses only the subvolume currently selected using the Volume Clipping widget. This is useful when only a subvolume is being examined. [Pushing the L key when the cursor is in the viewing window will make the lines thicker].

Edit Object Material

Permits the "material" properties of the surfaces to be changed. The color of the objects can be modified, as can their transparency. Ambient and emission values can be increased to make the object appear brighter.

Edit Back Light

This allows the color of the back light to be changed. It is what affects the color of the inside of the objects (in addition to their material color). By default it is red.

Edit Front Light

This allows the color of the front light to be changed. It is what affects the color of the outside of the objects (in addition to their material color). By default it is white. The front light's position can be changed via an "l" key pressed when the cursor is in the DAVE viewing window. See the DAVE widget help for more information on this.

Edit Other Objects

This allows the user to place arrows and other objects (e.g., scale bars and polygons) into the scene. Objects are placed at the position of the crosshair which is set using the Edit Crosshair widget.

Edit Crosshairs

This widget allows a crosshair to be positioned in 3D. Crosshairs can be positioned by picking with the cursor, or by typing image coordinates into a coordinate box. The image view can be centered around the crosshairs. This is a convenient way to center the scene on a known image coordinate. Voxel values at the crosshair positioned are displayed. Line segments can be drawn between crosshair positions. More elaborate image analysis can be performed in conjunction with the ROI Analysis widget (on the Goodies menu).

Edit Misc Props

Edit miscellaneous properties. Change z magnification, contour wireframe spacing, cross hatch spacing, z plane spacing, and line width. See this widget's help for more details.

Widget Control

This widget allows a user to group widgets together. Grouped widgets can all be displayed or hidden at once. In addition, widgets can be displayed by selecting their name from a widget list shown in this widget.
Copyright 1995 by Lawrence M. Lifshitz and the University of Massachusetts Medical School. All rights reserved.