| Flying/ Navigation
- Audition has two primary modes of interaction using the mouse - Fly and
direct Navigation.
Fly, can be enabled by clicking the button
on the menu bar that says Fly. In this mode the eyepoint moves much like
an aircraft and the mouse cursor position acts as a virtual joystick where
the centre of the screen represents straight and level. Moving the cursor
left or right turns the eyepoint and moving the cursor upward or downward
from centre screen causes the eyepoint to climb or descend. Clicking on
the left mouse button speeds up the eyepoint and clicking on the right
mouse button slows it down (including reverse). If you click on the left
and right mouse buttons simultaneously you will stop instantly. Some people
find the up and down motion confusing compared to a real aircraft, so there
is an “Invert” button on the menu bar that reverses the effect of mouse
up and mouse down.
Direct Mouse Navigation, is enabled by clicking
off the Fly button on the menu bar. This mode allows more degrees of freedom
in moving about the scene and behaves more like a flying saucer. Holding
the Left mouse button pivots the eyepoint left and right and up and down
as you move the mouse around the centre point of the screen. Holding the Right mouse button down and moving the cursor causes the eyepoint to rise and
fall as well as slide left and right in the scene. Holding both the left
and right mouse buttons and moving the cursor causes the eyepoint to move
forward and back in the scene as well as left and right.
Controlling your speed - In either Fly or
Direct Mouse Navigation Mode, the overall sensitivity and maximum flying
speed are controlled by the Mouse Sensitivity slider control on the menu
bar. Moving the slider to the left has the effect of slowing down motion
in the scene and to the right speeds things up. These scenes have been
tuned to be viewed at normal vehicle speeds (50mph for ground scenes and
300 to 400mph for aircraft scenes). Motion will become less fluid and you
will probably outrun the disk paging (database tears and low resolution
imagery on terrain) if you fly too quickly. If this happens slow down or
stop and wait for the paging to catch up. If you get hopelessly lost, there
is a reset view button - 2nd icon from right on menu bar.
Self running Flight Paths - It is al so possible
t o run these demos along a pre-planned flight path without mouse interaction.
To do so, go to the View pulldown menu in Audition and select the Path
Dlg menu item. Hit the Play button to begin the pre-recorded flight path
or Browse to a different file location to load a different path.
Launching – The Audition runtime software
is automatically launched when you run any of the VizMAP 3D Terrain Demos
or by double clicking on the Audition.exe file in that demo’s directory.
Please note that the larger files can take anywhere from 20 seconds to
several minutes to load. Don’t launch multiple copies (repeated double
clicking or Start menu launches) as the Audition program and VizMAP database
typically consume a large amount of CPU memory and multiple copies will
bog the system down. Check your Windows Task Manager if you experience
very slow loading or rendering performance as you may have accidentally
launched multiple copies. Also please realize that you will experience
very slow performance running these demos on small memory configuration
systems (< 128MB) or low disk free space configurations, regardless
of the performance of your 3D graphics card, because the software requires
CPU memory to continuously page data on and off the disk. You will see
a small X rotating in the top left corner of the Audition window whenever
the system is in the process of paging. The larger your system memory and
faster your disk is, the less this paging icon will come on.
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