Soft Body Dynamics
Soft bodies include all types of deformable objects. Typical examples are jelly-like substances, clay, thin sheets of metal or soft plastic. RealFlow is capable of simulating these properties in a physically correct and believable way. It is not only possible to deform objects permanently, but the objects are able to adopt their original shape – a phenomenon you know from foamed or rubber materials.
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Any polygon object can be turned into a soft body and interact with RealFlow's other solvers. Deformable objects can float on RealWave surfaces, get kneaded in turbulent Hybrido waves, or compressed by rigid bodies.
Rigid Body Dynamics
With this feature it is possible to simulate the behaviour and motion of non-deformable objects. As mentioned above, rigid bodies come in two flavours: The first type is called “Passive rigid body” and describes an object whose motion is not affected by other elements of the scene. It cannot, for example, be moved through collisions with rigid bodies or fluids. This does not necessarily mean that a passive body is motionless, because it can still be animated or deformed. A passive rigid body can also affect the paths of actively moving bodies and fluids. When you take a look at a passive body's “Rigid body” panel you will see that many parameters are not accessible, for example “@ mass” or “@ velocity”. The reason is that passive rigid bodies can be considered objects with infinite mass. As passive nodes they do not have properties like initial velocity or rotation, and they do not require a centre of gravity.
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