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The Active Bodies Solver node is used to specify the scene geometry which will partake in the Active Bodies simulation. By default, all geometries in the scene are Solid and act as obstacles to the Phoenix fluid simulation. Active Bodies go one step further and can be pushed by the fluid or can float over the liquid surface, unlike Solid obstacles which stay in place and just obstruct the movement of the fluid. Additionally, just like the movement Solid bodies can be animated, the movement of the Active Bodies can be animated as well, so that an Active Body both follows a trajectory, and at the same time gets pushed by the fluid. You can balance between the influence of the animation and the fluid from an Active Body's right click properties' Original Animation Influence option.Note that mutual interaction between the Active Bodies themselves is not supported yet. Also, interaction
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The Active Bodies simulation currently supports interaction between scene geometry and the Phoenix FD Liquid Simulator. Interaction between Active Bodies and the Phoenix FD Fire/Smoke Simulator |
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is not supported. Mutual interaction between the Active Bodies themselves is not supported yet. |
The Active Bodies Solver node sets up global simulation parameters which affect all Active Body objects in the Interaction list, in contrast to the Phoenix FD Per-Node Properties which are unique for each Active Body. This way you can have several Active Body Solver nodes, each with their own set of Active Bodies with different rigid body behavior for each set.
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