Page 578 - ExtendSim User Guide
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Tips and Reference
Dialog tabs for animation
the E3D window at one time and the locations of the objects in the E3D window do not have to correspond to the location of the model’s blocks. In addition, the timing of 3D object movement is directly related to the travel time of items in the 2D model – ani- mation time is based on the ratio of simulation time to real time.
• Buffered. Buffered mode is a variation on concurrent mode where the information about what should happen in the E3D window is stored in an internal buffer and then replayed later. When the simulation model completes running, the buffered information will be complete as well and the 3D representation will be stored. At this point, a “start” button will appear in the E3D window. When the start button is clicked, the 3D visualization of the simulation will begin. You have to wait for the simulation to com- plete before the animation will begin. But because the model is not running while the E3D window is animating, the performance of the 3D animation might be better than for Concurrent mode.
The selected mode is shown in the title bar of the E3D window.
• Environmentfile.Selectsafilethatspecifiestheappearanceandbehaviorofthebackground for the E3D window. The default is the “Extend3D.mis” file – an empty, unbounded 3D world with a cloudy sky and a gridded flat floor. This file will also be used if the field is left blank. You can also create custom environment files as described in greater detail in “Saving changes” on page 532.
• Defineconversionratios.Theseratiosspecifytherelationshipfordistanceandtimebetween the E3D window and the simulation model. In most cases the default values will not need to be changed.
• TheunitsofdistanceintheE3Denvironmentareinmeterswhiledistanceinthemodel worksheet can be stated in pixels. The distance ratio defines how many pixels in the 2D worksheet represent one meter in the E3D window. The distance ratio defaults to Dis- tance: 20 pixels per meter. For models that use a direct relationship between the two windows, each 20 pixels of distance in the model worksheet will translate to one meter of distance in the E3D environment.
• The time ratio controls the 3D animation’s display speed for the Concurrent and Buff- ered modes; the value of the ratio is reported in the E3D window’s title bar. (Since sim- ulation time equals animation time for the QuickView mode, the time ratio is ignored for that mode.) For the Concurrent and Buffered modes, animation time in the E3D window is related to model simulation time by the time ratio. By default the ratio is defined to be Time: 1 time units per second (one simulation time unit to one second of real time). This means that if a simulation is set to take 60 time units and the 3D ani- mation is being displayed in Concurrent mode, the display in the E3D window should take 1 minute. The time ratio value, and the animation speed, changes if you click the Faster or Slower buttons on the E3D window.
Dialog tabs for animation
The main dialog tabs that affect 3D animation are: • ItemAnimation
• BlockAnimation

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