JReality

View Menu ______________________________________________________________ | CM Surveyor | |------------------------------------------------------------| #2 Menus | File Personal Environ Section Fidelity View Help | |---------------------------------------|---------------|----| | | Field Of View | | | Clip Ratio | | Visibility | ----------------- Purpose: Provides control over how much of the 3D model being viewed is actually rendered. Usage: To Display Menu: press left mouse button while cursor is over View menu bar item. To Select a Menu Item: display the View menu, drag cursor over the desired menu item, then release the mouse button. Notes: All View menu items are dialog windows.

Field Of View ______________________________________________________________ | CM Surveyor | |------------------------------------------------------------| #2 Menus | File Personal Environ Section Fidelity View Help | |---------------------------------------|---------------|----| | | Field Of View | | | Clip Ratio | | Visibility | ----------------- ____________________________ | Field of View Dialog | |--------------------------| | |/\| Accept | | |~~| | | | | | |+------------+| | | || 45.0 || | Reset | |+------------+| | | | Degrees | | | | |__| | | |--| Cancel | | |__| | | |\/| | ---------------------------- Purpose: Changes the angle of the view cone, which changes the amount of the scene that is visible in the 3D VR Window. The effect is similar to changing the zoom setting on a camera. Usage: To Change the Field of View: adjust the Degrees scrollbar to the desired value, then click Accept. To Restore the Previous Field of View: press Reset instead of Accept after sliding the scrollbar. The scrollbar is returned to the last Accept'ed setting. To Dismiss the Field of View Dialog: press Cancel. Also resets the scrollbar to the last Accept'ed value. Notes: Changing the viewpoint (attained by moving the avatar) will require occasional changes to the field of view. For example, a smaller field of view, such as the 45 degree Java3D default, is suitable for viewing the scene from afar. Moving inside a building generally requires the field of view to be increased to around 90 degrees. Moving into a very confined space such as a closet may require a field of view of 100 or more. Large field of view values tend to produce perspective-distorted images. In general, it is best to select the smallest field of view that allows the scene to be viewed comfortably.

Clip Ratio ______________________________________________________________ | CM Surveyor | |------------------------------------------------------------| #2 Menus | File Personal Environ Section Fidelity View Help | |---------------------------------------|---------------|----| | | Field Of View | | | Clip Ratio | | Visibility | ----------------- ________________________________ | Clip Ratio Dialog | |------------------------------| | |/\| Accept | | |~~| | | | | | |+----------------+| | | || 1000.0 || | Reset | |+----------------+| | | | Back/Front Ratio |__| | | |--| | | | | Cancel | | |__| | | |\/| | -------------------------------- Purpose: Changes to relative positions of the front and back clipping planes. Usage: To Change the Clip Ratio: adjust the Back/Front Ratio scrollbar to the desired value, then click Accept. To Restore the Previous Clip Ratio: press Reset instead of Accept after sliding the scrollbar. The scrollbar is returned to the last Accept'ed setting. To Dismiss the Clip Ratio Dialog: press Cancel. Also resets the scrollbar to the last Accept'ed value. Notes: The clip ratio may sound like an esoteric view parameter but, in practice, there are situations in which you may wish to change its value: As you move closer to a wall, at some point you will "break through" the wall and begin to see things on the other side. Higher values of the clip ratio allow a wall to be approached more closely without the view prematurely "breaking through". Many geometric artifacts in a scene are created by butting together geometric primitives such as cubes. Occasionally these butt joins or seams are visible in the 3D rendered image as annoying dotted lines or streaks. Lower values of the clip ratio smooth out the rendering and tend to eliminate most of these annoying streaks.

Visibility ______________________________________________________________ | CM Surveyor | |------------------------------------------------------------| #2 Menus | File Personal Environ Section Fidelity View Help | |---------------------------------------|---------------|----| | | Field Of View | | | Clip Ratio | | Visibility | ----------------- _______________________ | Visibility Dialog | |---------------------| | Shell | | inv Weather Deck | | Deck | | Longit Blkhd | | Transv Blkhd | | Hyper Outfit | | Lumin Outfit | | Major Outfit | | Minor Outfit | | | |---------------------| | Cancel | ----------------------- Purpose: Allow selective eimination of scene geometry from rendering in the 3D VR Window. Usage: To Prevent a Type of Geometry from Rendering: Click the geometry type entry in the Visibility Dialog list. The string "inv" is displayed indicating this type of geometry is now invisible, and the VR view is updated accordingly. To Re-Enable a Type of Geometry for Rendering: Click a geometry type entry in the Visibility Dialog list that is tagged as "inv". The "inv" string is removed indicating this type of geometry is now visible, and the VR view is updated accordingly. Notes: Changing the visibility of various parts of the scene geometry allows interesting effects such as viewing a house from above with the roof (Weather Deck) removed. The list of geometry types in the Visibility Dialog list is currently fixed. Not all scenes will contain all types of geometry. If toggling a particular geometry type has no noticable effect, then either the scene does not contain geometry tagged as being of that type or, possibly, the current view position and field of view do not encompass any geometric objects of that type.