SMS 3D Animation: Difference between revisions

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==Introduction==

SMS should now look something like this:<br>

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<li>To view the 2D mesh at a pseudo-3D oblique view, open the ''Display Options >> 2D Mesh'' window and check the Elements on. Using the Rotate tool [[File:SMS Rotate Icon.png]] you can drag the map view and change to an oblique view.<br>

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<li>Return to ''Display Options >> 2D Mesh'' and uncheck Elements. To display imagery draped over a 3D surface we need to turn on Texture Mapping. Go to ''Display Options >> General'' and select '''2D Mesh''' under the Texture Mapping Display Location list.

The General options include the ability to exaggerate the Z axis scale by changing the Z magnification. Uncheck '''Auto z-mag''' and change the '''Z magnification''' to a factor of 5.0. Rotate the map view and SMS should now look something like this:<br>

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<li>Turning Contours on in the display options drapes the active dataset over the terrain. This can however look somewhat strange because an animation will show the water surface rising and falling according to the underlying terrain. A useful feature in SMS is to define one dataset as a functional surface, over which a second dataset other than the terrain may be draped. This allows, for example, water depth to be draped over the water surface rather than the terrain, giving a more realistic 3D impression of the water surface and varying depth.

<li>Under Contour surface, select Options to view the Dataset Colour Options. Use this window to customise the display options of the water depth. This example makes use of '''SMS Palettes.pal''' colour palette available from the Downloads section of the <u>[http://www.tuflow.com/ TUFLOW website]</u>. Located in the '''Colour Ramp''' options, the '''Depths''' colour palette is loaded using the '''User defined''' method.<br>

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<li>Change the '''Colour Interval''' to the number of colours you'd like and check '''Specify a range''' that increases the colour range for overland (more shallow) flood depths. Enable transparency by changing the '''Transparency''' to 40%. If you haven't already, turn on '''Vectors''' in the ''Display Options >> 2D Mesh'' window.<br>

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SMS should now look something like this:<br>

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By using the functional surface option, the depth contours are now draped over the water surface and not the terrain.</li>

<li>Another option is to enable relief shading to emulate hill shade. If you wish to enable this option, you may do so under the ''Display Options >> General'' menu and '''Shading''' tab. Check '''Enable lights''' and configure the settings as you prefer.<br>

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<li>Finalise your map view by customising the ''Display Options >> 2D Mesh >>'' '''Contours''' tab display options and legend, together with your angle of view using the Rotate tool. It's a good idea to step through your 2D results timesteps to ensure you're happy with how the animation will appear.</li>

<li>You're now ready to create the animation. Open the ''Data >> Film Loop'' menu to create the animation. If you're unsure about this, you may follow the steps provided in the Animations section of the <u>[[SMS_Tips#Animations | SMS Tips]]</u> page.</li>

<li>You may create animations using any view that you wish, depending on any particular features in your results that you wish to show.<br>

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