Edit Object Properties Help

Clicking the middle mouse button while the cursor is in the viewing window, will cause the crosshair (assuming it is on, see Edit->Crosshair->Show) to jump to the nearest object. While the button is down the name of that object is also highlighted in blue.

Clicking on the object name will also cause the crosshair to jump to the first point in that object (unless a time series is being displayed and "track time series points" is set). Again, the name is highlighted in blue while the button is down.

The following are toggles:

ON/OFF

Specifies whether the particular object should be displayed or not.

WIRE/SURF

Specifies whether the object should be displayed as a wireframe or a surface. Note: Use Edit->Misc Props -> Line Width from the DAVE master widget to make all wireframes thicker or thinner. The color of the box is the same as the color of the wireframe or of the (diffuse component of the) surface (depending upon whether the button is set to WIRE or SURF).

NORM/DATA

In NORM mode the surface will appear shaded based upon the light source and its material properties (see Edit Materials). This is usually white on the outside and red on the inside. In DATA mode, image data (specified on the command line with -I) values are mapped as intensities onto the surface instead. No shading based upon light source is performed and the inside and outside of the object appear the same color. The color map used for this (-IC # on the command line) can be modified using the Edit Map widget. A specialized colormap can also be loaded (specify the map number with -IC # and load it via the Load Map widget from the Goodies menu in the DAVE master widget). Even when an object is in WIRE mode the image data will get mapped to the display.

Color

Pops up a color widget so that the color of the wireframe version of the object can be modified.

Buttons to the right of "ALL"

These operate the same as the buttons above, but affect all the objects simultaneously.

Note: if more than 15 objects are present, the 16th object is listed at the bottom. Clicking with the middle mouse button on the object name will change the 16th entry to the next object (e.g, the 17th object). Alternatively, holding the right mouse button down while on the name will pop-up a menu of additional object which can be chosen.

Object Properties Menu

Object Clipping: Puts up a widget to allow subsets of each object to be displayed. See the help for the widget once it is displayed for more details.

Edit Object Materials: Puts up a widget for changing each object's color (when displayed as a surface) and transparency. See the help button on this widget for more details.

Sync Time Series: DAVE can associate a "time" with an object. This is done by including a comment line in the object's pts file, e.g.: #time=1 If you have done this, then checking this option causes all changes to an object in one time period to be propagated to the same numbered object in all the time periods in a series (e.g., if you change its color).

Draw objects in front of volume data: Sometimes objects are obscured by volume data. If you want to be able to clearly see the objects (e.g., want to know where the wireframes really are), check this option. The object will ALWAYS be drawn as if it were in front of the data volume (this may look somewhat funny, especially in stereo, since the stereo clues say that the object is inside the data volume but visually they appear in front).

Write Object Drawing Inst: When reading in complicated objects (e.g, branching blood vessels), it may take DAVE a long time to figure out how to stretch a surface over the wireframe data. This option tells DAVE to write out these drawing instructions so that the next time the data is read in (with the -a option), it can be quickly displayed as a surface. The -w and -W options on the command line will also cause DAVE to write a drawing instruction file.