11.2. 模块 dem¶

11.2.1. 子模块预览¶

`core`	CUDEM from 'SudoSim-DEM'
`cudem`	CUDEM from 'SudoSim-DEM'
`rtdem`	RTDEM from 'SudoSim-DEM'

11.2.2. 子模块 core API函数¶

CUDEM from ‘SudoSim-DEM’

class dem.core.Box¶

基类：WallData

Box with six walls, inheriting from WallData.

__init__(self: dem.core.Box, arg0: pySudoMath.Vector3f, arg1: pySudoMath.Vector3f) → None¶

addWall(self: dem.core.WallData, arg0: pySudoMath.Vector3f, arg1: int, arg2: int) → None¶: add a wall to the scene

back_wall(self: dem.core.Box) → dem.core.Wall¶: Get the back wall

bottom_wall(self: dem.core.Box) → dem.core.Wall¶: Get the bottom wall

front_wall(self: dem.core.Box) → dem.core.Wall¶: Get the front wall

left_wall(self: dem.core.Box) → dem.core.Wall¶: Get the left wall

right_wall(self: dem.core.Box) → dem.core.Wall¶: Get the right wall

top_wall(self: dem.core.Box) → dem.core.Wall¶: Get the top wall

class dem.core.DEMSimBase¶

The DEM solver base class. Users are not allowed to use this base class directly.

Pause(self: dem.core.DEMSimBase) → None¶: force pause the simulation when running with RunPthread

RunPthread(self: dem.core.DEMSimBase, arg0: int) → None¶: Run the simulation with n steps in a new thread

__init__(self: dem.core.DEMSimBase) → None¶

property dt¶: time step

property elapsedTime¶: elapsed time [seconds]

freeMem(self: dem.core.DEMSimBase) → None¶: free up GPU memory in the simulation.

getParNum(self: dem.core.DEMSimBase) → int¶: get particle number in the simulation

getSystemInfo(self: dem.core.DEMSimBase) → None¶: get the GPU info in the system.

property hooks¶: getHooks setHooks

init(self: dem.core.DEMSimBase) → None¶: initialize the sim model before running.

isLoaded(self: dem.core.DEMSimBase) → bool¶: check if the simulation is loaded from a checkpoint

isRunning(self: dem.core.DEMSimBase) → bool¶: get the isRunnning flag to check if the core simulation is running

iter(self: dem.core.DEMSimBase) → int¶: get the current time step

moveToNextTimeStep(self: dem.core.DEMSimBase) → None¶

run(self: dem.core.DEMSimBase, arg0: int) → None¶: Run the simulation with n steps

setFilePrefix(self: dem.core.DEMSimBase, arg0: str) → None¶: set the prefixname of output file.

setLoadedFlag(self: dem.core.DEMSimBase, arg0: bool) → None¶: set the loaded flag.

setOutputDir(self: dem.core.DEMSimBase, arg0: str) → None¶: set the output directory.

property speed¶

writeVTK(self: dem.core.DEMSimBase, arg0: str) → None¶: dump particle data into a VTK file.

class dem.core.Material¶

The basic material class. Future materials can be built based on this base class.

__init__(self: dem.core.Material) → None¶

property density¶: density of the material

property friction¶: friction of the material

property kn¶: kn of the material

property ks¶: ks of the material

property poisson¶: poisson of the material

property vdamping¶: viscous damping of the material applied to contacts

property young¶: young of the material

class dem.core.PeriodicHook¶

The base class for periodic hook that can be injected into the simulation cycle. Users are not allowed to use this base class directly.

__init__(self: dem.core.PeriodicHook) → None¶

property dead¶: the hook is dead (True) or not.

property iterLast¶: iteration of last run

property iterPeriod¶: iter Periodicity

property realLast¶: real time of last run

property realPeriod¶: real Periodicity

reset(self: dem.core.PeriodicHook, **kwargs) → None¶: reset the period of the hook

property totalRuns¶: the total runs for the hook

property virtLast¶: virtual time of last run

property virtPeriod¶: virtual Periodicity

class dem.core.PyHook¶

基类：PeriodicHook

This hook can be used to call Python functions at the user end.

__init__(self: dem.core.PyHook) → None¶

property command¶: command for the pyhook. WARNING: you cannot use the print function in the hook, or else it may encounter a crash in detached multi-threads. FIXEME in the future. As a workaround, we use app.print in GUI.

class dem.core.Wall¶

The infinite plane wall with its axes parallel to that of the world coordinate system.

__init__(self: dem.core.Wall) → None¶

property axis¶: wall axis

getPos(self: dem.core.Wall) → pySudoMath.Vector3f¶: get the position of a wall

property id¶: wall id

property sense¶: wall sense

setPos(self: dem.core.Wall, arg0: pySudoMath.Vector3f) → None¶: set wall position

class dem.core.WallData¶

Wall data can be accessed and managed through this class.

__init__(self: dem.core.WallData) → None¶

addWall(self: dem.core.WallData, arg0: pySudoMath.Vector3f, arg1: int, arg2: int) → None¶: add a wall to the scene

getNum(self: dem.core.WallData) → int¶: get the wall number in the simulation.

property material¶: material attached to walls

class dem.core.async_spdlogger¶

async_logger

__init__(self: dem.core.async_spdlogger, arg0: str, arg1: dem.core.pysink) → None¶: init function

critical(self: dem.core.async_spdlogger, arg0: str) → None¶: Send a message at the level of CRITICAL.

info(self: dem.core.async_spdlogger, arg0: str) → None¶: Send a message at the level of INFO.

warn(self: dem.core.async_spdlogger, arg0: str) → None¶: Send a message at the level of WARN.

class dem.core.pysink¶

pysink.

__init__(*args, **kwargs)¶

Overloaded function.

__init__(self: dem.core.pysink) -> None
__init__(self: dem.core.pysink, arg0: object) -> None

dem.core.register_async_logger(arg0: spdlog::async_logger) → None¶: register logger

dem.core.register_logger(arg0: spdlog::logger) → None¶: register logger

dem.core.set_async_logger(arg0: spdlog::async_logger) → None¶: set the default logger.

dem.core.set_logger(arg0: spdlog::logger) → None¶: set the default logger.

class dem.core.spdlogger¶

logger

__init__(self: dem.core.spdlogger, arg0: str, arg1: dem.core.pysink) → None¶

critical(self: dem.core.spdlogger, arg0: str) → None¶: Send a message at the level of CRITICAL.

info(self: dem.core.spdlogger, arg0: str) → None¶: Send a message at the level of INFO.

warn(self: dem.core.spdlogger, arg0: str) → None¶: Send a message at the level of WARN.

11.2.3. 子模块 cudem API函数¶

CUDEM from ‘SudoSim-DEM’

class dem.cudem.DEMSim¶

基类：DEMSimBase

The DEM solver by CUDEM.

ParRadii(self: dem.cudem.DEMSim) → List[float]¶

PolysuperShapeParas(self: dem.cudem.DEMSim) → object¶

PtsPos(self: dem.cudem.DEMSim) → List[float]¶

__init__(*args, **kwargs)¶

Overloaded function.

__init__(self: dem.cudem.DEMSim) -> None
__init__(self: dem.cudem.DEMSim, arg0: int) -> None
__init__(self: dem.cudem.DEMSim, arg0: object) -> None
__init__(self: dem.cudem.DEMSim, arg0: int, arg1: object) -> None

property digitalElevation¶: digital elevation data

property domain¶

property fcompute¶: compute contact forces

getPosOri(self: dem.cudem.DEMSim) → object¶

getShapeGroupInfo(self: dem.cudem.DEMSim) → list¶

property integrator¶: integrator for particle motion

load(self: dem.cudem.DEMSim, arg0: str) → bool¶: load data

loadParticles(self: dem.cudem.DEMSim, arg0: str) → None¶: load particle info from file

loadPthread(self: dem.cudem.DEMSim, arg0: str) → None¶: load data

moveToNextTimeStep(self: dem.cudem.DEMSim) → None¶

property nlist¶: neighbor list

property nlistUpdates¶: get iterations of updating neighbour list

particleScales(self: dem.cudem.DEMSim) → object¶: scale factors of all particles in the scene

property pdata¶: particle data

printParInfo(self: dem.cudem.DEMSim, arg0: int) → None¶: print the particle info with id

property reorderInterval¶: reorder data N nlist updates per time.

reorderParticles(self: dem.cudem.DEMSim) → None¶: reorder particles in z-order pattern. [test only]

save(self: dem.cudem.DEMSim, arg0: str) → bool¶: save data

saveParticles(self: dem.cudem.DEMSim, arg0: str) → None¶: save particle info (pos and rad) into file.

savePthread(self: dem.cudem.DEMSim, arg0: str) → None¶: save data

property useORT¶: use ORT or not.

property useReorder¶: turn on/off reorder.

vertsId(self: dem.cudem.DEMSim) → object¶: ids for vertices

vertsNorms(self: dem.cudem.DEMSim) → object¶: verts and norms of all shapes of polysuperellipsoids

property walls¶: wall container

class dem.cudem.DigitalElevation¶

The digital elevation model (DEM) that can be used to model terrains.

__init__(self: dem.cudem.DigitalElevation) → None¶

loadData2d(self: dem.cudem.DigitalElevation, arg0: numpy.ndarray[numpy.float32]) → None¶: load data from 2d numpy array

property material¶: material attached to the mesh

setCellSize(self: dem.cudem.DigitalElevation, arg0: float) → None¶: set cell size of each element

class dem.cudem.Domain¶

The simulation domain that controls the model size. It is only required for the cell-based method.

__init__(self: dem.cudem.Domain) → None¶

getMins(self: dem.cudem.Domain) → pySudoMath.Vector3f¶: get the lower-left corner

getSize(self: dem.cudem.Domain) → pySudoMath.Vector3f¶: get the AABB size of the domain

printInfo(self: dem.cudem.Domain) → None¶: print the domain info.

setAABB(*args, **kwargs)¶

Overloaded function.

setAABB(self: dem.cudem.Domain, arg0: float, arg1: float, arg2: float) -> None

set the AABB of the domain box with the lower-left corner at the origin

setAABB(self: dem.cudem.Domain, arg0: float, arg1: float, arg2: float, arg3: float, arg4: float, arg5: float) -> None

set the AABB of the domain box

setCellSize(self: dem.cudem.Domain, arg0: float) → None¶: set cell size in the domain (cubic cell with x=y=z).

setDim(self: dem.cudem.Domain, arg0: int, arg1: int, arg2: int) → None¶: set Dim for subcells to partition the whole domain.

class dem.cudem.ForceCompute¶

Solver for inter-object forces.

Compute(self: dem.cudem.ForceCompute, arg0: bool, arg1: bool) → None¶: Compute contact forces.

__init__(self: dem.cudem.ForceCompute) → None¶

property pdata¶: particle data pointer [read only]

printInfo(self: dem.cudem.ForceCompute) → None¶: print the ForceCompute info

class dem.cudem.Integrator¶

Integration of particle motion. The Newton integrator is applied.

Integrate(self: dem.cudem.Integrator) → cudaError¶: run integration of particle motion.

__init__(self: dem.cudem.Integrator) → None¶

property alpha¶: update neighborlist when particle displacement exceeds alpha*radius with repect to the reference.

property damping¶

property gravity¶

printInfo(self: dem.cudem.Integrator) → None¶: print the integrator info

class dem.cudem.NeighborList¶

The neighbor searching is controled by this class. Also, some debug functions are provided.

property ORTextend¶: aabb extend when using ORT

__init__(self: dem.cudem.NeighborList) → None¶

build(self: dem.cudem.NeighborList, arg0: bool) → None¶: build a neighbor list

property delta¶: threshold for potential contacts

launchTest(self: dem.cudem.NeighborList) → None¶: test launch RT time, debug ongly

printInfo(self: dem.cudem.NeighborList) → None¶: print the nlist info.

rebuildAS(self: dem.cudem.NeighborList) → None¶: rebuild AS for debug only

testORT(self: dem.cudem.NeighborList) → int¶: test ORT for bvh

updateAS(self: dem.cudem.NeighborList) → None¶: update AS for debug only

class dem.cudem.ParticleData¶

Particle data can be accessed and managed through this class.

__init__(self: dem.cudem.ParticleData) → None¶

fixParById(self: dem.cudem.ParticleData, arg0: int) → None¶: fix a particle/wall by its global id.

fixParticlesbyIds(self: dem.cudem.ParticleData, arg0: std::vector<int, std::allocator<int> >) → bool¶: fix particles by specified ids

generatePacking(self: dem.cudem.ParticleData, arg0: pySudoMath.Vector3f, arg1: pySudoMath.Vector2f, arg2: int) → tuple¶: Generate a random packing in the domain.

getAngVelById(self: dem.cudem.ParticleData, arg0: int) → pySudoMath.Vector3f¶: particle’s angular velocity by a specific id, for debug only.

getForceTorqueById(self: dem.cudem.ParticleData, arg0: int) → numpy.ndarray[numpy.float32]¶: get resultant contact force and torque by body id.

getGravPotentialEnergy(self: dem.cudem.ParticleData, arg0: float, arg1: float) → float¶: get the gravitational potential energy of all particles [reference position, grav_g].

getKineticEnergy(self: dem.cudem.ParticleData) → float¶: get the kinetic energy of all particles.

getShapeType(self: dem.cudem.ParticleData) → int¶: get the shape type of particles.

getVelById(self: dem.cudem.ParticleData, arg0: int) → pySudoMath.Vector3f¶: particle velocity by a specific id, for debug only.

property material¶

printInfo(self: dem.cudem.ParticleData, arg0: int) → None¶: print particle info by id

setVelById(self: dem.cudem.ParticleData, arg0: pySudoMath.Vector3f, arg1: int) → None¶: set particle translational velocity by id. Only for several-time usage!

updatePosById(self: dem.cudem.ParticleData, arg0: pySudoMath.Vector3f, arg1: int) → None¶: update particle position by id

property wallMaterial¶: material of the wall

class dem.cudem.PolySuperellipsoidData¶

基类：ParticleData

Particle data can be accessed and managed through this class.

PtsPos(self: dem.cudem.PolySuperellipsoidData) → List[float]¶

__init__(self: dem.cudem.PolySuperellipsoidData) → None¶

getN(self: dem.cudem.PolySuperellipsoidData) → int¶

getPosById(self: dem.cudem.PolySuperellipsoidData, arg0: int) → pySudoMath.Vector3f¶: get particle position by id

getVertIndex(self: dem.cudem.PolySuperellipsoidData) → List[pySudoMath.Vector3i]¶: get vertex index of discreted surfaces for visualization.

loadPos(self: dem.cudem.PolySuperellipsoidData, arg0: str) → None¶: load particle positions from file [test only]

property material¶

savePos(self: dem.cudem.PolySuperellipsoidData, arg0: str) → None¶: save particle positions into file

setPosOri(self: dem.cudem.PolySuperellipsoidData, arg0: List[pySudoMath.Vector3f], arg1: List[pySudoMath.Quaternionr]) → bool¶: particle positions and orientations (list of positions and list of orientations).

setShapePara(*args, **kwargs)¶

Overloaded function.

setShapePara(self: dem.cudem.PolySuperellipsoidData, arg0: List[pySudoMath.Vector2f], arg1: List[pySudoMath.Vector2f], arg2: List[pySudoMath.Vector2f], arg3: List[pySudoMath.Vector2f]) -> bool

shape parameters (list of (eps1, eps2), list of (rx+, rx-), list of (ry+, ry-) and list of (rz+, rz-)).

setShapePara(self: dem.cudem.PolySuperellipsoidData, arg0: List[pySudoMath.Vector2f], arg1: List[pySudoMath.Vector2f], arg2: List[pySudoMath.Vector2f], arg3: List[pySudoMath.Vector2f], arg4: List[int]) -> bool

shape parameters (list of (eps1, eps2), list of (rx+, rx-), list of (ry+, ry-), list of (rz+, rz-)) and list of particle number in each shape group.

setShapePara(self: dem.cudem.PolySuperellipsoidData, arg0: List[pySudoMath.Vector2f], arg1: List[pySudoMath.Vector2f], arg2: List[pySudoMath.Vector2f], arg3: List[pySudoMath.Vector2f], arg4: List[int], arg5: List[float]) -> bool

shape parameters (list of (eps1, eps2), list of (rx+, rx-), list of (ry+, ry-), list of (rz+, rz-)), list of particle number in each shape group, and list of scale factors for all particles.

class dem.cudem.SphereData¶

基类：ParticleData

Particle data can be accessed and managed through this class.

PtsPos(self: dem.cudem.SphereData) → List[float]¶

__init__(self: dem.cudem.SphereData) → None¶

createParticles(*args, **kwargs)¶

Overloaded function.

createParticles(self: dem.cudem.SphereData, arg0: List[pySudoMath.Vector3f], arg1: List[float]) -> bool

create particles in the simulation.

createParticles(self: dem.cudem.SphereData, arg0: List[pySudoMath.Vector3f], arg1: List[float], arg2: List[int]) -> bool

create particles in the simulation.

getN(self: dem.cudem.SphereData) → int¶

getPosById(self: dem.cudem.SphereData, arg0: int) → pySudoMath.Vector3f¶: get particle position by id

getRadii(self: dem.cudem.SphereData) → List[float]¶

loadPos(self: dem.cudem.SphereData, arg0: str) → None¶: load particle positions from file [test only]

property material¶

property radius¶: Radii of all particles

savePos(self: dem.cudem.SphereData, arg0: str) → None¶: save particle positions into file

11.2.4. 子模块 rtdem API函数¶

RTDEM from ‘SudoSim-DEM’

class dem.rtdem.Bound¶

AABB bound.

__init__(self: dem.rtdem.Bound) → None¶

center(self: dem.rtdem.Bound) → pySudoMath.Vector3f¶: center of the Bound

span(self: dem.rtdem.Bound) → pySudoMath.Vector3f¶: span of the Bound

class dem.rtdem.DEMSim¶

基类：DEMSimBase

The DEM solver by RTDEM.

__init__(*args, **kwargs)¶

Overloaded function.

__init__(self: dem.rtdem.DEMSim) -> None
__init__(self: dem.rtdem.DEMSim, arg0: int) -> None
__init__(self: dem.rtdem.DEMSim, arg0: object) -> None
__init__(self: dem.rtdem.DEMSim, arg0: int, arg1: object) -> None

getInstanceInfo(self: dem.rtdem.DEMSim) → object¶

getMeshNum(self: dem.rtdem.DEMSim) → int¶: get mesh number (immovable particles such as walls) in the simulation

getMeshPosOri(self: dem.rtdem.DEMSim, arg0: int) → object¶: get pos and ori of a mesh by mesh id.

getOri(self: dem.rtdem.DEMSim) → object¶

getPos(self: dem.rtdem.DEMSim) → object¶

getPosOri(self: dem.rtdem.DEMSim) → object¶

property integrator¶: integrator for particle motion

load(self: dem.rtdem.DEMSim, arg0: str) → bool¶: load data

loadPthread(self: dem.rtdem.DEMSim, arg0: str) → None¶: load data

moveMesh(self: dem.rtdem.DEMSim, arg0: int, arg1: pySudoMath.Vector3f) → None¶: verts of all polyhedrons in the scene

moveToNextTimeStep(self: dem.rtdem.DEMSim) → None¶

particleScales(self: dem.rtdem.DEMSim) → object¶: scale factors of all polyhedrons in the scene

property pdata¶

printParInfo(self: dem.rtdem.DEMSim, arg0: int) → None¶: print the particle info with id

rebuildIAS_debug(self: dem.rtdem.DEMSim) → None¶: rebuild IAS for debug only

save(self: dem.rtdem.DEMSim, arg0: str) → bool¶: save data

savePthread(self: dem.rtdem.DEMSim, arg0: str) → None¶: save data

updatedMeshGUI(self: dem.rtdem.DEMSim) → bool¶: if we need to update meshes in GUI

verts(self: dem.rtdem.DEMSim) → object¶: verts of all polyhedrons in the scene

vertsId(self: dem.rtdem.DEMSim) → object¶: ids for vertices

vertsIdMesh(self: dem.rtdem.DEMSim, arg0: int) → object¶: ids for vertices

vertsMesh(self: dem.rtdem.DEMSim, arg0: int) → object¶: verts of all polyhedrons in the scene

vertsNormal(self: dem.rtdem.DEMSim) → object¶: normals for vertices

vertsNormalDist(self: dem.rtdem.DEMSim) → object¶: normals * ray length for vertices

vertsNormalMesh(self: dem.rtdem.DEMSim, arg0: int) → object¶: normals for vertices

class dem.rtdem.Integrator¶

Integration of particle motion.

Integrate(self: dem.rtdem.Integrator) → cudaError¶: run integration of particle motion.

__init__(self: dem.rtdem.Integrator) → None¶

property alpha¶: update neighborlist when particle displacement exceeds alpha*radius with repect to the reference.

calmSystem(self: dem.rtdem.Integrator) → None¶: calm down all particles in the system. All velocities will be reset to zeros.

property damping¶

property dead¶: dead or not

property densityScaling¶: density scaling for rotation only.

property gravity¶

printInfo(self: dem.rtdem.Integrator) → None¶: print the integrator info

property viscousDamping¶: viscous damping at contact

class dem.rtdem.ParticleData¶

Particle data can be accessed and managed through this class.

__init__(self: dem.rtdem.ParticleData) → None¶

addObject(self: dem.rtdem.ParticleData, arg0: rtr::PolyhedronData) → None¶: add an object into the scene

fixParById(self: dem.rtdem.ParticleData, arg0: int) → None¶: fix a particle/wall by its global id.

getAngVelById(self: dem.rtdem.ParticleData, arg0: int) → pySudoMath.Vector3f¶: particle’s angular velocity by a specific id, for debug only.

getForceTorqueById(self: dem.rtdem.ParticleData, arg0: int) → numpy.ndarray[numpy.float32]¶: get resultant contact force and torque by body id.

getGravPotentialEnergy(self: dem.rtdem.ParticleData, arg0: float, arg1: float) → float¶: get the gravitational potential energy of all particles [reference position, grav_g].

getKineticEnergy(self: dem.rtdem.ParticleData) → float¶: get the kinetic energy of all particles.

getVelById(self: dem.rtdem.ParticleData, arg0: int) → pySudoMath.Vector3f¶: particle velocity by a specific id, for debug only.

property material¶

printInfo(self: dem.rtdem.ParticleData, arg0: int) → None¶: print particle info by id

setVelById(self: dem.rtdem.ParticleData, arg0: pySudoMath.Vector3f, arg1: int) → None¶: set particle translational velocity by id. Only for several-time usage!

updatePosById(self: dem.rtdem.ParticleData, arg0: pySudoMath.Vector3f, arg1: int) → None¶: update particle position by id

property wallMaterial¶: material of the wall

class dem.rtdem.PolyhedronData¶

Mesh data can be accessed and managed through this class. Differing from ParticleData, this class is specific for particle shape.

__init__(self: dem.rtdem.PolyhedronData) → None¶

property bounds¶

computGeometry(self: dem.rtdem.PolyhedronData) → None¶: compute geometric info such as moments of inertia, volume and center.

getParNum(self: dem.rtdem.PolyhedronData) → int¶: get the number of particles that are generated based on the polyhedron model.

getVertexNum(self: dem.rtdem.PolyhedronData) → int¶: vertex number of the polyhedron model

property label¶: Label for this group of particles.

loadBox(self: dem.rtdem.PolyhedronData, arg0: float, arg1: float, arg2: float) → None¶: load an axis-aligned box with a size of (length_x, length_y and length_z). The bottom-left corner is at the origin.

loadPlane(self: dem.rtdem.PolyhedronData, arg0: float, arg1: float, arg2: int) → None¶: load a plane with its size (length and width) and direction (1: yz, 2: xz, 3:xy; and minus for the negative direction of the axis).

loadRectangle(self: dem.rtdem.PolyhedronData, arg0: numpy.ndarray[numpy.float32]) → None¶: load vertices and facets

loadSTL(*args, **kwargs)¶

Overloaded function.

loadSTL(self: dem.rtdem.PolyhedronData, arg0: str) -> None

load a STL file to the model

loadSTL(self: dem.rtdem.PolyhedronData, arg0: str, arg1: float) -> None

load a STL file to the model

loadSTL(self: dem.rtdem.PolyhedronData, arg0: str, arg1: float, arg2: bool) -> None

load a STL file to the model

loadSTL(self: dem.rtdem.PolyhedronData, arg0: str, arg1: pySudoMath.Vector3f) -> None

load a STL file to the model

loadSTL(self: dem.rtdem.PolyhedronData, arg0: str, arg1: pySudoMath.Vector3f, arg2: bool) -> None

load a STL file to the model

loadVertFacet(self: dem.rtdem.PolyhedronData, arg0: numpy.ndarray[numpy.float32], arg1: numpy.ndarray[numpy.int32]) → None¶: load vertices and facets

property material¶

setMovable(self: dem.rtdem.PolyhedronData, arg0: bool) → None¶: set if the object is movable or not

setPosOri(self: dem.rtdem.PolyhedronData, arg0: List[pySudoMath.Vector3f], arg1: List[pySudoMath.Quaternionr]) → None¶: set position and orientations

setPosition(self: dem.rtdem.PolyhedronData, arg0: List[pySudoMath.Vector3f]) → None¶: set positions

setRayPara(self: dem.rtdem.PolyhedronData, arg0: bool, arg1: float) → None¶: set the ray parameters (useBVH (different length), weight parameter for the ray length if using different lengths).

setScaleFactors(self: dem.rtdem.PolyhedronData, arg0: numpy.ndarray[numpy.float32]) → None¶: scale factors for each particle with respect to the reference particle

verts(self: dem.rtdem.PolyhedronData) → object¶: vertices

vertsId(self: dem.rtdem.PolyhedronData) → object¶: ids for vertices

vertsNormal(self: dem.rtdem.PolyhedronData) → object¶: normals for vertices

property writeVTKflag¶: true for writing vtk files when DEMSim calls writeVTK.

write_stl(self: dem.rtdem.PolyhedronData) → None¶: write the normalized template mesh into a stl file.