pub struct MassProperties {
    pub local_com: OPoint<f32, Const<3>>,
    pub inv_mass: f32,
    pub inv_principal_inertia_sqrt: Matrix<f32, Const<3>, Const<1>, ArrayStorage<f32, 3, 1>>,
    pub principal_inertia_local_frame: Unit<Quaternion<f32>>,
}
Expand description

The local mass properties of a rigid-body.

Fields

local_com: OPoint<f32, Const<3>>

The center of mass of a rigid-body expressed in its local-space.

inv_mass: f32

The inverse of the mass of a rigid-body.

If this is zero, the rigid-body is assumed to have infinite mass.

inv_principal_inertia_sqrt: Matrix<f32, Const<3>, Const<1>, ArrayStorage<f32, 3, 1>>

The inverse of the principal angular inertia of the rigid-body.

Components set to zero are assumed to be infinite along the corresponding principal axis.

principal_inertia_local_frame: Unit<Quaternion<f32>>

The principal vectors of the local angular inertia tensor of the rigid-body.

Implementations

Initializes the mass properties from the given center-of-mass, mass, and principal angular inertia.

The center-of-mass is specified in the local-space of the rigid-body. The principal angular inertia are the angular inertia along the coordinate axes in the local-space of the rigid-body.

Initializes the mass properties from the given center-of-mass, mass, and principal angular inertia.

The center-of-mass is specified in the local-space of the rigid-body. The principal angular inertia are the angular inertia along the coordinate axes defined by the principal_inertia_local_frame expressed in the local-space of the rigid-body.

Initialize a new MassProperties from a given center-of-mass, mass, and angular inertia matrix.

The angular inertia matrix will be diagonalized in order to extract the principal inertia values and principal inertia frame.

The mass.

The angular inertia along the principal inertia axes of the rigid-body.

The world-space center of mass of the rigid-body.

The world-space inverse angular inertia tensor of the rigid-body.

Reconstructs the inverse angular inertia tensor of the rigid body from its principal inertia values and axes.

Reconstructs the angular inertia tensor of the rigid body from its principal inertia values and axes.

Transform each element of the mass properties.

Changes the mass on these mass-properties.

The adjust_angular_inertia argument should always be true, unless there are some specific reasons not to do so. Setting this to true will automatically adjust the angular inertia of self to account for the mass change (i.e. it will multiply the angular inertia by new_mass / prev_mass). Setting it to false will not change the current angular inertia.

Computes the mass properties of a ball.

Computes the mass properties of a capsule.

Computes the mass properties of a compound shape.

Computes the mass properties of a cone.

Computes the mass properties of a convex polyhedron.

Computes the mass properties of a cuboid.

Computes the mass properties of a cylinder.

Computes the mass properties of a triangle mesh.

Trait Implementations

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Auto Trait Implementations

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