This set of parameters is only visible when the object's → “Simulation” option is set to “Active rigid body” or “Passive rigid body”.
Collision geometry
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- With “Inside”, other rigid and soft bodies can only react with the object's inside.
- With “Outside”, other rigid and soft bodies can only react with the object's outside.
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Mass
RealFlow automatically calculates an object's mass in kilograms, but you can enter any other positive value. A body's acceleration does not depend on its mass: in a vacuum, all objects will have exactly the same fall velocity regardless of the adjusted “@ mass” “Mass” value. If you want to create differences please consider changing “@ air “Air Friction”.
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Air Friction
This is the amount of resistance caused by a surrounding atmosphere. High settings can stop an object completely.
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CG
“CG” stands for "centre of gravity" and is measured in metres. It is especially useful for floating objects, because by shifting the centre of gravity downwards, you can prevent a body from tipping. Please also read → “Floating Objects”. Click on “+” for sliders.
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Velocity
Here, the initial velocity of an active rigid body is defined. You can use any positive or negative value for the parameter's X, Y, and Z components. “@ Velocity” “Velocity” is measured in metres per second. Click on “+” for sliders.
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Rotation W
Here, the initial angular velocity of an active rigid body is defined. You can use any positive (clockwise rotation) or negative (counterclockwise rotation) value for the parameter's X, Y, and Z components. “@ Velocity” “Velocity” is measured in degrees per second. Higher values make the object spin faster around its centre of gravity (see “@ CG”“CG”). Click on “+” for sliders.
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Object friction
Object friction occurs when bodies with uneven surfaces interact. “@ object “Object friction” slows down the interacting objects and can even stop them completely. The maximum value is 1.0. RealFlow takes the average friction of all interacting rigid/soft bodies into account.
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Elasticity
This parameter makes an object bounce. The maximum value is 1.0.