Main Graphics Frame

The Main Graphics Frame is the primary graphics area in the VISRAD Main Window. It is used to view the target components while setting up the grid, as well as to display results from the VISRAD calculations.

To adjust the view in the main graphics window, use the Graphics Viewing Controls.

Projection Model, Measurement Tools, and Graphics Decorators

The Main Graphics Window is displayed using Orthographic Projection. In orthographic projection, the viewing volume is a rectangular parallelepiped (box). The cross section of the viewing volume does not change with depth (unlike "perspective" projection), and therefore projected distances and angles are not affected by their depth in the viewing volume.

Several items can be used to enhance the display or measure angles and distances:

• Distance and angle measuring tools can be used by picking points with the mouse.
• Rulers with grid lines can be displayed (select the Show | Rulers or Show | Rulers and Grid Lines menu items). To adjust the units for the rulers (i.e., the distance between major ticks and grid lines), select the Set | Ruler Units menu item.
• Graphics Decorators can be overlain on the display. The visibility of Graphics Decorators can controlled using the Show | Graphics Decorators menu item.

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