I’m trying to make Quick Smoke work on a BI scene in Blender 2.73 and am confused by how the Physics tab operates for smoke simulations. I have a few questions:
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What are the “rules” regarding baking/free baking smoke? If I have Free Bake on, sometimes the simulation works if I go frame-by-frame starting at frame 1. Most of the time, Free Bake doesn’t work and I have to press the Bake button to bake the simulation.
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Is possible to start a smoke simulation on a negative frame? When I set my simulation from frame -14 to frame 200 and bake it, it will show the correct state of the smoke on frame 0 but the simulation will stay frozen beyond that.
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In a Domain/Flow simulation, I see that there’s a “Density” and “Temp Diff” control for both the Domain and the Flow. Conceptually, I think I understand what the parameter should do for the flow object (the density of the smoke and how fast should it rise), but what do these parameters mean for the domain object?
Thanks!