VolumeMassProperties Class |
Contains static initialization methods and allows access to the computed
metrics of volume, volume centroid and volume moments in
in solid meshes, in solid surfaces and in solid (closed) boundary representations.
Inheritance HierarchyNamespace: Rhino.Geometry
Assembly: RhinoCommon (in RhinoCommon.dll)
SyntaxThe VolumeMassProperties type exposes the following members.
Properties| Name | Description | |
|---|---|---|
 | Centroid |
Gets the volume centroid in the world coordinate system.
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| CentroidCoordinatesMomentsOfInertia |
Moments of inertia with respect to centroid coordinate system.
X = integral of ((y-y0)^2 + (z-z0)^2) dm
Y = integral of ((z-z0)^2 + (x-x0)^2) dm
Z = integral of ((z-z0)^2 + (y-y0)^2) dm
where (x0,y0,z0) = centroid.
|
| CentroidCoordinatesMomentsOfInertiaError |
Uncertainty in centroid coordinates moments of inertia calculation.
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| CentroidCoordinatesProductMoments |
Product moments with respect to centroid coordinate system.
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| CentroidCoordinatesProductMomentsError |
Uncertainty in product moments with respect to centroid coordinate system.
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| CentroidCoordinatesRadiiOfGyration |
Radii of gyration with respect to centroid coordinate system.
X = sqrt(integral of ((y-y0)^2 + (z-z0)^2) dm/M)
Y = sqrt(integral of ((z-z0)^2 + (x-x0)^2) dm/M)
Z = sqrt(integral of ((z-z0)^2 + (y-y0)^2) dm/M)
where (x0,y0,z0) = centroid.
|
| CentroidCoordinatesSecondMoments |
Second moments with respect to centroid coordinate system.
X = integral of (x-x0)^2 dm
Y = integral of (y-y0)^2 dm
Z = integral of (z-z0)^2 dm
where (x0,y0,z0) = centroid.
|
| CentroidCoordinatesSecondMomentsError |
Uncertainty in centroid coordinates second moments calculation.
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| CentroidError |
Gets the uncertainty in the Centroid calculation.
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 | Volume |
Gets the volume solution.
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| VolumeError |
Gets the uncertainty in the volume calculation.
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| WorldCoordinatesFirstMoments |
Returns the world coordinate first moments if they were able to be calculated.
X is integral of "x dm" over the volume
Y is integral of "y dm" over the volume
Z is integral of "z dm" over the volume.
|
| WorldCoordinatesFirstMomentsError |
Uncertainty in world coordinates first moments calculation.
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| WorldCoordinatesMomentsOfInertia |
The moments of inertia about the world coordinate axes.
X = integral of (y^2 + z^2) dm
Y = integral of (z^2 + x^2) dm
Z = integral of (z^2 + y^2) dm.
|
| WorldCoordinatesMomentsOfInertiaError |
Uncertainty in world coordinates moments of inertia calculation.
|
| WorldCoordinatesProductMoments |
Returns the world coordinate product moments if they were able to be calculated.
X is integral of "xy dm" over the volume
Y is integral of "yz dm" over the volume
Z is integral of "zx dm" over the volume.
|
| WorldCoordinatesProductMomentsError |
Uncertainty in world coordinates second moments calculation.
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| WorldCoordinatesRadiiOfGyration |
Radii of gyration with respect to world coordinate system.
X = sqrt(integral of (y^2 + z^2) dm/M)
Y = sqrt(integral of (z^2 + x^2) dm/M)
Z = sqrt(integral of (z^2 + y^2) dm/M)
|
| WorldCoordinatesSecondMoments |
Returns the world coordinate second moments if they were able to be calculated.
X is integral of "xx dm" over the volume
Y is integral of "yy dm" over the volume
Z is integral of "zz dm" over the volume.
|
| WorldCoordinatesSecondMomentsError |
Uncertainty in world coordinates second moments calculation.
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Methods| Name | Description | |
|---|---|---|
 | CentroidCoordinatesPrincipalMoments |
Calculates the eigenvalues and eigenvectors of the moments matrix with respect to centroid coordinates.
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| CentroidCoordinatesPrincipalMomentsOfInertia |
Calculates the principal moments of inertia and principal axes with respect to centroid coordinates.
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 | Compute(Brep) |
Compute the VolumeMassProperties for a single Brep.
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| Compute(IEnumerableGeometryBase) |
Computes the VolumeMassProperties for a collection of geometric objects.
At present only Breps, Surfaces, and Meshes are supported.
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| Compute(Mesh) |
Compute the VolumeMassProperties for a single Mesh.
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| Compute(Surface) |
Compute the VolumeMassProperties for a single Surface.
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| Compute(Brep, Boolean, Boolean, Boolean, Boolean) |
Compute the VolumeMassProperties for a single Brep.
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| Compute(IEnumerableGeometryBase, Boolean, Boolean, Boolean, Boolean) |
Computes the VolumeMassProperties for a collection of geometric objects.
At present only Breps, Surfaces, Meshes and Planar Closed Curves are supported.
|
| Compute(Mesh, Boolean, Boolean, Boolean, Boolean) |
Compute the VolumeMassProperties for a single Mesh.
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| Compute(Surface, Boolean, Boolean, Boolean, Boolean) |
Compute the VolumeMassProperties for a single Surface.
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| Compute(Brep, Boolean, Boolean, Boolean, Boolean, Double, Double) |
Compute the VolumeMassProperties for a single Brep.
|
| Dispose |
Actively reclaims unmanaged resources that this instance uses.
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 | Dispose(Boolean) |
For derived class implementers.
This method is called with argument true when class user calls Dispose(), while with argument false when the Garbage Collector invokes the finalizer, or Finalize() method. You must reclaim all used unmanaged resources in both cases, and can use this chance to call Dispose on disposable fields if the argument is true. Also, you must call the base virtual method within your overriding method. |
| Equals | Determines whether the specified object is equal to the current object. (Inherited from Object.) |
| Finalize |
Passively reclaims unmanaged resources when the class user did not explicitly call Dispose().
(Overrides ObjectFinalize.) |
| GetHashCode | Serves as the default hash function. (Inherited from Object.) |
| GetType | Gets the Type of the current instance. (Inherited from Object.) |
| MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
| Sum |
Sum mass properties together to get an aggregate mass.
|
| ToString | Returns a string that represents the current object. (Inherited from Object.) |
| Transform |
On input, this contains the mass properties for some geometry G.
On exit, this contains the mass properties for the transformed geometry xform(G).
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| WorldCoordinatesPrincipalMoments |
Calculates the eigenvalues and eigenvectors of moments matrix in world coordinates.
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| WorldCoordinatesPrincipalMomentsOfInertia |
Calculates the principal moments of inertia and principal axes with respect to world coordinates.
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See Also