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Tutorial: 3D Seated People
How to integrate image-based models into geometric scenes.
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What it’s all about
ArchVision’s 3D Seated People Collection provides visualization professionals with another important way to add rich detail to their scenes. With image-data available from every point around the Z-axis, this collection maintains the illusion of 3D without the processing overhead required with geometric solutions. This assorted collection of 30 casually and professionally dressed people will help bring scenes from offices to theaters to life like never before.
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What to watch for:
Because RPCs are composed of 2D images, there are some issues to be aware of when using this collection. Placement of the RPC relative to the seating surface geometry is especially important so as to maintain the illusion of 3D without the RPC to appear like it’s “floating” above the seat surface.
Also, the image-data for each RPC was collected with a standard seat height. We have sized the RPCs to maintain consistency between them. However, for your specific needs, you may need to resize the content to create the desired effect.
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Placing your 3D Seated People.
if you need help downloading and setting up your map paths
click here.
Step 1: Opening SeatDemo1.max and placing a Seated Person.
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Open SeatDemo1.max (File: Open: SeatDemo1.max), then, under the Creation Menu Rollout, select "RPC". |
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Click on the RPC button. Then, Under Content Type: Select Demo. |
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Select the demo content, Cynthia, by clicking on the character's name. |
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In the top viewport, Place the RPC (Cynthia) by clicking and holding the left mouse button down. Click just before the seat of the chair. It is important that the pivot point of Cynthia is floating just in front of the chair.
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Render the Camera1 Viewport.
Cynthia is casually seated in the office chair. You can go ahead and render the 200 frame animation to see how well Cynthia holds position or download a mpeg example here. |
Step 2: The problems with mixing image-based content with geometry.
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Now that you've rendered your first seated person, it's time to address some of the challenges that might occur with seated people content.
Go the Display tab and Unhide All (arms will appear on the chair). |
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Drag your timeslider to frame 80 and render the Camera1 viewport.
You will notice that Cynthia is cutting through the arm of the chair. This is a known problem using image-based content. It is a small, almost unnoticable problem. If this becomes extremely apparent in your scene, you can animate Cynthia to move across the chair until she no longer comes in contact with the chair arm.
You can download a mpeg of this condition here. |
Step 3: Having Fun! Making an auditorium.
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In the top viewport select all of the chair and Cynthia. |
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Using the array tool, set up a 2D array (to simulate row seating). Under the Incremental setting, type 30 for the X, 0.0 for Y and 0.0 for Z.
Under Array Dimensions, set the 1D count to 5 and the 2D count to 5. Again, under 2D Array Dimensions, Set the Incremental Row Offets to 0.0 for X, 50.0 for Y and 0.0 for Z. Then click OK. |
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Render the Camera2 viewport. A theater type seating arrangement is full of people.
You can either render the 200 frame animation of this effect or download a mpeg here. |
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