artisynth.core.mechmodels

Class PointPlaneForce

java.lang.Object

artisynth.core.modelbase.ModelComponentBase

artisynth.core.modelbase.RenderableComponentBase

artisynth.core.mechmodels.PointPlaneForce

All Implemented Interfaces:

ForceComponent, ForceEffector, ModelComponent, PostScannable, RenderableComponent, TransformableGeometry, ScalableUnits, java.lang.Cloneable, HasProperties, HierarchyNode, HasRenderProps, IsRenderable, IsSelectable, Renderable, Scannable

public class PointPlaneForce
extends RenderableComponentBase
implements ForceComponent, ScalableUnits, TransformableGeometry

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	PointPlaneForce.ForceType

Nested classes/interfaces inherited from interface artisynth.core.modelbase.ModelComponent

ModelComponent.NavpanelVisibility

Field Summary

Fields

Modifier and Type	Field and Description
static double	DEFAULT_DAMPING
static boolean	DEFAULT_ENABLED
static PointPlaneForce.ForceType	DEFAULT_FORCE_TYPE
static double	DEFAULT_STIFFNESS
static boolean	DEFAULT_UNILATERAL
static PropertyList	myProps

Fields inherited from class artisynth.core.modelbase.ModelComponentBase

enforceUniqueCompositeNames, enforceUniqueNames, myNumber, NULL_OBJ, useCompactPathNames

Fields inherited from interface artisynth.core.modelbase.TransformableGeometry

TG_ARTICULATED, TG_DRAGGER, TG_PRESERVE_ORIENTATION, TG_SIMULATING

Fields inherited from interface maspack.render.IsRenderable

TRANSPARENT, TWO_DIMENSIONAL

Constructor Summary

Constructors

Constructor and Description
PointPlaneForce()
PointPlaneForce(Point p, Plane plane)
PointPlaneForce(Point p, Vector3d nrml, Point3d center)

Method Summary

Modifier and Type	Method and Description
void	addPosJacobian(SparseNumberedBlockMatrix M, double s) Scales the components of the position Jacobian associated with this force effector and adds it to the supplied solve matrix M.
void	addSolveBlocks(SparseNumberedBlockMatrix M) Adds any needed blocks to a solve matrix in order to accomodate the Jacobian terms associated with this force effector.
void	addTransformableDependencies(TransformGeometryContext context, int flags) Adds to context any transformable components which should be transformed as the same time as this component.
void	addVelJacobian(SparseNumberedBlockMatrix M, double s) Scales the components of the velocity Jacobian associated with this force effector and adds it to the supplied solve matrix M.
void	applyForces(double t) Adds forces to the components affected by this force effector at a particular time.
RenderProps	createRenderProps() Factory method to create render properties appropriate to this object.
PropertyList	getAllPropertyInfo() Returns a list giving static information about all properties exported by this object.
Point3d	getCenter()
double	getDamping()
boolean	getEnabled()
double	getForce() Cpmputes and returns the current force along the plane normal.
PointPlaneForce.ForceType	getForceType()
int	getJacobianType() Returns a code indicating the matrix type that results when the Jacobian terms of this force effector are added to the solve matrix.
Vector3d	getNormal()
double	getOffset()
Plane	getPlane()
double	getPlaneSize()
Point	getPoint()
double	getStiffness()
boolean	getUnilateral()
void	prerender(RenderList list) Called prior to rendering to allow this object to update the internal state required for rendering (such as by caching rendering coordinates).
void	render(Renderer renderer, int flags) Render this object using the functionality of the supplied Renderer.
void	scaleDistance(double s) Scales all distance coordinates.
void	scaleMass(double s) Scales all mass units.
void	setCenter(Point3d c)
void	setDamping(double damping)
void	setEnabled(boolean enabled)
void	setForceType(PointPlaneForce.ForceType type)
void	setNormal(Vector3d n)
void	setOffset(double off)
void	setPlane(Plane p)
void	setPlaneSize(double len)
void	setPoint(Point pnt)
void	setStiffness(double stiffness)
void	setUnilateral(boolean unilateral)
void	transformGeometry(AffineTransform3dBase X) Applies an affine transformation to the geometry of this component.
void	transformGeometry(GeometryTransformer gtr, TransformGeometryContext context, int flags) Transforms the geometry of this component, using the geometry transformer gtr to transform its individual attributes.
void	updateBounds(Vector3d pmin, Vector3d pmax) Update the minimum and maximum points for this object.

Methods inherited from class artisynth.core.modelbase.RenderableComponentBase

copy, defaultRenderPropsAreNull, getRenderHints, getRenderProps, getSelection, isSelectable, isVisible, numSelectionQueriesNeeded, setRenderProps, setVisible, updateRenderProps

Methods inherited from class artisynth.core.modelbase.ModelComponentBase

checkFlag, checkName, checkNameUniqueness, clearFlag, clone, connectToHierarchy, createTempFlag, disconnectFromHierarchy, getChildren, getGrandParent, getHardReferences, getName, getNameRange, getNavpanelVisibility, getNavpanelVisibility, getNumber, getParent, getProperty, getSoftReferences, hasChildren, hasState, isFixed, isMarked, isScanning, isSelected, isWritable, makeValidName, makeValidName, notifyParentOfChange, postscan, printReferences, recursivelyContained, recursivelyContains, removeTempFlag, scan, setFixed, setFlag, setMarked, setName, setNavpanelVisibility, setNavpanelVisibility, setNumber, setParent, setScanning, setSelected, setWritable, updateReferences, write

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Methods inherited from interface artisynth.core.modelbase.ModelComponent

connectToHierarchy, disconnectFromHierarchy, getHardReferences, getName, getNavpanelVisibility, getNumber, getParent, getSoftReferences, hasState, isFixed, isMarked, isSelected, notifyParentOfChange, scan, setFixed, setMarked, setName, setNumber, setParent, setSelected, setWritable, updateReferences

Methods inherited from interface maspack.properties.HasProperties

getProperty

Methods inherited from interface maspack.properties.HierarchyNode

getChildren, hasChildren

Methods inherited from interface artisynth.core.modelbase.PostScannable

postscan

Methods inherited from interface maspack.util.Scannable

isWritable, write

Field Detail

DEFAULT_UNILATERAL

public static boolean DEFAULT_UNILATERAL

DEFAULT_STIFFNESS

public static double DEFAULT_STIFFNESS

DEFAULT_DAMPING

public static double DEFAULT_DAMPING

DEFAULT_FORCE_TYPE

public static PointPlaneForce.ForceType DEFAULT_FORCE_TYPE

DEFAULT_ENABLED

public static boolean DEFAULT_ENABLED

myProps

public static PropertyList myProps

Constructor Detail

PointPlaneForce

public PointPlaneForce()

PointPlaneForce

public PointPlaneForce(Point p,
                       Plane plane)

PointPlaneForce

public PointPlaneForce(Point p,
                       Vector3d nrml,
                       Point3d center)

Method Detail

getAllPropertyInfo

public PropertyList getAllPropertyInfo()

Description copied from interface: HasProperties

Returns a list giving static information about all properties exported by this object.

Specified by:

getAllPropertyInfo in interface HasProperties

Overrides:

getAllPropertyInfo in class RenderableComponentBase

Returns:

static information for all exported properties

setPlane

public void setPlane(Plane p)

getPlane

public Plane getPlane()

setOffset

public void setOffset(double off)

getOffset

public double getOffset()

getCenter

public Point3d getCenter()

setCenter

public void setCenter(Point3d c)

getNormal

public Vector3d getNormal()

setNormal

public void setNormal(Vector3d n)

getPlaneSize

public double getPlaneSize()

getPoint

public Point getPoint()

setPoint

public void setPoint(Point pnt)

setPlaneSize

public void setPlaneSize(double len)

getUnilateral

public boolean getUnilateral()

setUnilateral

public void setUnilateral(boolean unilateral)

getForceType

public PointPlaneForce.ForceType getForceType()

setForceType

public void setForceType(PointPlaneForce.ForceType type)

getStiffness

public double getStiffness()

setStiffness

public void setStiffness(double stiffness)

getDamping

public double getDamping()

setDamping

public void setDamping(double damping)

getEnabled

public boolean getEnabled()

setEnabled

public void setEnabled(boolean enabled)

getForce

public double getForce()

Cpmputes and returns the current force along the plane normal.

Returns:

force along the normal

applyForces

public void applyForces(double t)

Adds forces to the components affected by this force effector at a particular time. Component forces should be added and not set, since other forces may be added to the same components by other force effectors.

Specified by:

applyForces in interface ForceEffector

Parameters:

t - time (seconds)

addSolveBlocks

public void addSolveBlocks(SparseNumberedBlockMatrix M)

Adds any needed blocks to a solve matrix in order to accomodate the Jacobian terms associated with this force effector. In general, blocks will be need to be added at locations given by the block indices (bi, bj), where bi and bj correspond to the solve indices (as returned by getSolveIndex) for all dynamic or attached components affected by this force effector.

Specified by:

addSolveBlocks in interface ForceEffector

Parameters:

M - solve matrix to which blocks should be added

addPosJacobian

public void addPosJacobian(SparseNumberedBlockMatrix M,
                           double s)

Scales the components of the position Jacobian associated with this force effector and adds it to the supplied solve matrix M.

M is guaranteed to be the same matrix supplied in the most recent call to addSolveBlocks, and so implementations may choose to cache the relevant matrix blocks from that call, instead of retrieving them directly from M.

Specified by:

addPosJacobian in interface ForceEffector

Parameters:

M - solve matrix to which scaled position Jacobian is to be added

s - scaling factor for position Jacobian

addVelJacobian

public void addVelJacobian(SparseNumberedBlockMatrix M,
                           double s)

Scales the components of the velocity Jacobian associated with this force effector and adds it to the supplied solve matrix M.

M is guaranteed to be the same matrix supplied in the most recent call to addSolveBlocks, and so implementations may choose to cache the relevant matrix blocks from that call, instead of retrieving them directly from M.

Specified by:

addVelJacobian in interface ForceEffector

Parameters:

M - solve matrix to which scaled velocity Jacobian is to be added

s - scaling factor for velocity Jacobian

getJacobianType

public int getJacobianType()

Returns a code indicating the matrix type that results when the Jacobian terms of this force effector are added to the solve matrix. This should be a logical or-ing of either Matrix.SYMMETRIC or Matrix.POSITIVE_DEFINITE. The former should be set if adding the Jacobian terms preserves symmetry, and the latter should be set if positive definiteness if preserved. Both should be set if there is no Jacobian for this effector (i.e., the Jacobian methods are not implemented). Matrix types from all the force effectors are logically and-ed together to determine the type for the entire solve matrix.

Specified by:

getJacobianType in interface ForceEffector

Returns:

solve matrix type resulting from adding Jacobian terms

updateBounds

public void updateBounds(Vector3d pmin,
                         Vector3d pmax)

Description copied from interface: IsRenderable

Update the minimum and maximum points for this object. In an x-y-z coordinate system with x directed to the right and y directed upwards, the minimum and maximum points can be thought of as defining the left-lower-far and right-upper-near corners of a bounding cube. This method should only reduce the elements of the minimum point and increase the elements of the maximum point, since it may be used as part of an iteration to determine the bounding cube for several different objects.

Specified by:

updateBounds in interface IsRenderable

Overrides:

updateBounds in class RenderableComponentBase

Parameters:

pmin - minimum point

pmax - maximum point

createRenderProps

public RenderProps createRenderProps()

Description copied from interface: HasRenderProps

Factory method to create render properties appropriate to this object.

Specified by:

createRenderProps in interface HasRenderProps

Overrides:

createRenderProps in class RenderableComponentBase

Returns:

new render properties for this object

prerender

public void prerender(RenderList list)

Description copied from interface: IsRenderable

Called prior to rendering to allow this object to update the internal state required for rendering (such as by caching rendering coordinates). The object may add internal objects to the list of objects being rendered, by calling

list.addIfVisible (obj);

for each of the objects in question.

Specified by:

prerender in interface IsRenderable

Overrides:

prerender in class RenderableComponentBase

Parameters:

list - list of objects to be rendered

render

public void render(Renderer renderer,
                   int flags)

Description copied from interface: IsRenderable

Render this object using the functionality of the supplied Renderer.

Specified by:

render in interface IsRenderable

Specified by:

render in class RenderableComponentBase

Parameters:

renderer - provides the functionality used to perform the rendering.

flags - flags that may be used to control different aspects of the rendering. Flags are defined in Renderer and currently include Renderer.HIGHLIGHT and Renderer.SORT_FACES.

scaleMass

public void scaleMass(double s)

Description copied from interface: ScalableUnits

Scales all mass units.

Specified by:

scaleMass in interface ScalableUnits

Parameters:

s - scaling factor

scaleDistance

public void scaleDistance(double s)

Description copied from interface: ScalableUnits

Scales all distance coordinates.

Specified by:

scaleDistance in interface ScalableUnits

Parameters:

s - scaling factor

transformGeometry

public void transformGeometry(AffineTransform3dBase X)

Description copied from interface: TransformableGeometry

Applies an affine transformation to the geometry of this component. This method should be equivalent to

 TransformGeometryContext.transform (this, X, 0);
 

Specified by:

transformGeometry in interface TransformableGeometry

Parameters:

X - affine transformation to apply to the component

transformGeometry

public void transformGeometry(GeometryTransformer gtr,
                              TransformGeometryContext context,
                              int flags)

Description copied from interface: TransformableGeometry

Transforms the geometry of this component, using the geometry transformer gtr to transform its individual attributes. The context argument supplies information about what other components are currently being transformed, and also allows the requesting of update actions to be performed after all transform called have completed. The context is also the usual entity that calls this method, from within its TransformGeometryContext.apply(maspack.geometry.GeometryTransformer, int) method. The argument flags provides flags to specify various conditions associated with the the transformation. At present, the available flags are TransformableGeometry.TG_SIMULATING and TransformableGeometry.TG_ARTICULATED.

This method is not usually called directly by applications. Instead, it is typically called from within the TransformGeometryContext.apply(maspack.geometry.GeometryTransformer, int) method of the context, which takes care of the various operations needed for a complete transform operation, including calling TransformableGeometry.addTransformableDependencies(artisynth.core.modelbase.TransformGeometryContext, int) to collect other components that should be transformed, calling TransformableGeometry.transformGeometry(maspack.matrix.AffineTransform3dBase) for each component, notifying component parents that the geometry has changed, and calling any requested TransformGeometryActions. More details are given in the documentation for TransformGeometryContext.apply(maspack.geometry.GeometryTransformer, int).

TransformGeometryContext provides a number of static convenience transform methods which take care of building the context and calling apply() for a specified set of components.

This method should not generally call transformGeometry() for its descendant components. Instead, descendants needing transformation should be specified by adding them to the context in the method TransformableGeometry.addTransformableDependencies(artisynth.core.modelbase.TransformGeometryContext, int).

Specified by:

transformGeometry in interface TransformableGeometry

Parameters:

gtr - transformer implementing the transform

context - context information, including what other components are being transformed

flags - specifies conditions associated with the transformation

addTransformableDependencies

public void addTransformableDependencies(TransformGeometryContext context,
                                         int flags)

Description copied from interface: TransformableGeometry

Adds to context any transformable components which should be transformed as the same time as this component. This will generally include descendant components, and may also include other components to which this component is connected in some way.

This method is generally called from with the TransformGeometryContext.apply(maspack.geometry.GeometryTransformer, int) method of a TransformGeometryContext.

Specified by:

addTransformableDependencies in interface TransformableGeometry

Parameters:

context - context information, to which the dependent components are added.

flags - specifies conditions associated with the transformation