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Scenarios Tutorial


Scenarios are a way of configuring the way in which you wish your design is to be viewed; things to be configured are viewing mode, walking speed, height of avatar, and optionally links to other scenarios.

Scenarios will appear in the published design which can be loaded into the free viewer or be packaged into a "single exe" file:

WalkAbout3d Free Viewer

Adding a new walkthrough scenario


  • Once you have loaded the SketchUp file you can add a new scenario by pressing the "Add..." button on the Scenarios tab:
  • This will show the "New Scenario" dialog box. The first thing to do is give it a sensible name, and possibly a description.

  • Next you need to chose the "Viewing mode". In this tutorial we are making a new walkthrough - so click on the "Walkthrough" radio button.
  • Now choose the avatar settings - these are the height of the avatar and the speed at which it will walk.
  • Finally you can choose which modes are turned on when starting the walkthrough. So if you want to start running - then check the "Running" checkbox.
  • You will notice that the Ok button is disabled. There is another button marked with a Red Circle:

  • You need to press this; this will start the walkthough mode. You need to navigate the avatar to the position you would like as the starting point for the scenario. When you have walked to the correct position (and looking in the right direction), press the "Exit" button and this will create the scenario.

Adding a new animated scenario

An animated scenario is one which contains a recorded camera path. When viewed this path is followed by the avatar with no intervention required by the user.

  • The first thing to is to choose a "Walkthrough" scenario, View it, and walk to the position where you want to start the animation from.
  • Next press the "Add..." button on the "Scenarios" tab, and type in an appropriate name and description. (Same as described above.)
  • This time choose the "Animated" viewing mode:

  • You can set the avatar parameters in the same way as a walkthrough scenario.
  • Next press the "Record animation..." button. This will start the walkthrough as normal. The difference is that as you walk/fly/look around the design your position and the way you are looking is being recorded.
  • When you reach the end of the walkthrough ( it is up to you decide where this might be), press the "Exit" button or press the "Escape" key.

This will have created an animated scenario. If you select this in the list of scenarios, and press the "View" button, the animation will be played in the viewing window. Also you will notice that the "Video..." button is enabled.

Creating a video

  • Choose an animated scenario in the scenarios list. This will enabled the "Video..." button:

  • This will show the following dialog which lets you set the creation parameters for the video:

  • First press the "..." button to set the file name:

  • Next choose the resolution for the video, either from a list of "standard" resolutions or choose your own custom one.
  • Now choose the "Codec" you wish to use. This is the way in which the video data is encoded and compressed into the video file. Each one has a "Quality" setting which will affect the picture quality and (inversely) the file size.
  • Frames per second adjusts how many "frames" or "pictures" are stored in the video file per second. Increasing the value will make the video smoother, but the file size bigger.
  • With anti-aliasing turned on each frame is rendered at either 2x or 4x resolution, and then scaled down when written to the video file.
  • Turning stereo on lets you create stereo videos ( you will need a stereo video player like Stereoscopic Player to play them). The eye separation, and focal distance are taken from the stereo settings in the main WalkAbout3d settings window.
  • Finally press the "Create" button to generate the video file. If you click the "Show Preview" check box then each frame will be shown on the form.

Linking scenarios together

Once you have a few scenarios, you can start adding "screen links" to them. These are buttons which are shown on the bottom left of the visualization window, each one is linked to a different scenario, so that when the button is pressed an alternative scenario is loaded. You can link to scenarios in the currently loaded design or to ones in previously published designs.

  • Create a couple of scenarios as described above - perhaps a walkthrough and an animation.
  • Next choose the walkthrough scenario in the scenario list, and press the "Change" button:

  • This will show the "Edit Scenario" dialog box. Click the first Screen Link "..." button:

  • This will show the following dialog box which lets you choose which scenario you want to link to, in this case the one called "Animation":

  • Press the Ok button.
  • Now when you view the walkthough scenario you will see a button labeled "Animation" in the bottom left corner of the screen:

  • The text in the button is the name of the scenario the button links to - so sensible naming makes it clearer for the end user.
  • If you follow a screen link then the other scenario will be started. A "back" button will be added to the top left of the screen - pressing this will return you to the previous scenario: