Public Member Functions |
| | CVX_MaterialVoxel (float youngsModulus=1e6f, float density=1e3f, double nominalSize=0.001) |
| | Default Constructor.
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| | CVX_MaterialVoxel (rapidjson::Value &mat, double nominalSize=0.001) |
| | Constructs this CVX_Material object from a rapidjson parser node that contains valid "materials" sub-nodes.
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| | CVX_MaterialVoxel (const CVX_Material &mat, double nominalSize=0.001) |
| | Constructs from an existing material.
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| CVX_MaterialVoxel (const CVX_MaterialVoxel &vIn) |
| | Copy constructor.
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virtual CVX_MaterialVoxel & | operator= (const CVX_MaterialVoxel &vIn) |
| | Equals operator.
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| bool | setNominalSize (double size) |
| | Sets the nominal cubic voxel size in order to calculate mass, moments of inertia, etc of this material. In ordinary circumstances this should be controlled by the overall simulation and never called directly. Use setExternalScaleFactor() if you wish to change the size of voxels of this material.
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double | nominalSize () |
| | Returns the nominal cubic voxel size in meters.
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Vec3D< double > | size () |
| | Returns the current nominal size (in meters) of any voxels of this material-including external scaling factors. The size is calculated according to baseSize()*externalScaleFactor(). This represents the nominal size for voxels of this material, and every instantiated voxel may have a different actual size based on the forces acting upon it in context. This value does not include thermal expansions and contractions which may also change the nominal size of a given voxel depending on its CTE and current temperature.
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float | mass () |
| | Returns the mass of a voxel of this material in Kg. Mass cannot be specified directly. Mass is indirectly calculated according to setDensity() and setBaseSize().
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float | momentInertia () |
| | Returns the first moment of inertia of a voxel of this material in kg*m^2. This quantity is indirectly calculated according to setDensity() and setBaseSize().
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float | internalDampingTranslateC () const |
| | Returns the internal material damping coefficient (translation).
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float | internalDampingRotateC () const |
| | Returns the internal material damping coefficient (rotation).
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float | globalDampingTranslateC () const |
| | Returns the global material damping coefficient (translation)
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float | globalDampingRotateC () const |
| | Returns the global material damping coefficient (rotation)
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float | collisionDampingTranslateC () const |
| | Returns the global material damping coefficient (translation)
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float | collisionDampingRotateC () const |
| | Returns the global material damping coefficient (rotation)
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float | penetrationStiffness () const |
| | returns the stiffness with which this voxel will resist penetration. This is calculated according to E*A/L with L = voxelSize/2.
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Protected Member Functions |
| void | initialize (double nominalSize) |
| | Initializes this voxel material with the specified voxel size.
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| void | setGravityMultiplier (float gravityMultiplier) |
| | Sets the multiple of gravity for this material. In normal circumstances this should only be called by the parent voxelyze object.
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float | gravityMuliplier () |
| | Returns the current gravity multiplier.
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float | gravityForce () |
| | Returns the current gravitational force on this voxel according to F=ma.
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virtual bool | updateAll () |
| | Updates and recalculates eveything possible (used by inherited classed when material properties have changed)
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virtual bool | updateDerived () |
| | Updates all the derived quantities cached as member variables for this and derived classes. (Especially if density, size or elastic modulus changes.)
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Protected Attributes |
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double | nomSize |
| | Nominal size (i.e. lattice dimension) (m)
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float | gravMult |
| | Multiplier for how strongly gravity should affect this block in g (1.0 = -9.81m/s^2)
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float | _mass |
| | Cached mass of this voxel (kg)
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float | _massInverse |
| | Cached 1/Mass (1/kg)
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float | _sqrtMass |
| | Cached sqrt(mass). (sqrt(Kg))
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float | _firstMoment |
| | Cached 1st moment "inertia" (needed for certain calculations) (kg*m)
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float | _momentInertia |
| | Cached mass moment of inertia (i.e. rotational "mass") (kg*m^2)
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float | _momentInertiaInverse |
| | Cached 1/Inertia (1/(kg*m^2))
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float | _2xSqMxExS |
| | Cached value needed for quick damping calculations (Kg*m/s)
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float | _2xSqIxExSxSxS |
| | Cached value needed for quick rotational damping calculations (Kg*m^2/s)
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Friends |
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class | CVoxelyze |
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class | CVX_Voxel |
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class | CVX_MaterialLink |
Defines a voxel type of a specific material.
The only fundamental addition to CVX_Material is the physical size of the voxel, but this allows precomputing of mass, moments of inertia, and therefore all the dynamic properties of these voxels.
1.7.6.1
