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Simbody
3.3
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Simbody
3.3
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This is the base class for all Measure handle classes. More...
#include <Measure.h>
Inheritance diagram for SimTK::AbstractMeasure:Classes | |
| class | Implementation |
| The abstract parent of all Measure Implementation classes. More... | |
| class | SetHandle |
| An object of this type is used as a dummy argument to make sure the automatically-generated handle constructor's signature doesn't conflict with an explicitly-defined one. More... | |
Public Member Functions | |
| AbstractMeasure (Implementation *g=0) | |
| Provide an Implementation for this AbstractMeasure and bump its reference count. More... | |
| AbstractMeasure (Subsystem &, Implementation *g, const SetHandle &) | |
| Construct this handle with a given Implementation object (whose reference count will be bumped) and then let the given Subsystem adopt this Measure (which will again bump the Implementation's reference count, leaving us with two new handles). More... | |
| AbstractMeasure (const AbstractMeasure &) | |
| Shallow copy constructor copies the pointer from the source Implementation object and bumps its reference count. More... | |
| AbstractMeasure & | operator= (const AbstractMeasure &source) |
| Shallow assignment operator results in this handle referencing the same Implementation object as does the source. More... | |
| ~AbstractMeasure () | |
| Destructor decrements the Implementation's reference count and deletes the object if the count goes to zero. More... | |
| AbstractMeasure & | shallowAssign (const AbstractMeasure &) |
| Shallow assignment operator destructs the current Implementation object (meaning its reference count is decremented and the object actually deleted only if the count goes to zero), then copies the Implementation pointer from the source and bumps its reference count. More... | |
| AbstractMeasure & | deepAssign (const AbstractMeasure &source) |
| Deep assignment clones the Implementation object pointed to by the source handle, so that this handle ends up pointing to a new Measure object similar to the original but not yet contained in any Subsystem. More... | |
| int | getNumTimeDerivatives () const |
| Every Measure can produce a value, and some can provide one or more total derivatives with respect to time of that value. More... | |
| Stage | getDependsOnStage (int derivOrder=0) const |
| At what Stage can we expect the value of this AbstractMeasure or one of its time derivatives to be available? Users of Measures will typically impose restrictions on the levels they will accept. More... | |
| bool | isSameMeasure (const AbstractMeasure &other) const |
| There can be multiple handles on the same Measure. More... | |
| bool | isEmptyHandle () const |
| bool | isInSubsystem () const |
| Test whether this Measure object has been adopted by a Subsystem. More... | |
| const Subsystem & | getSubsystem () const |
| Return a reference to the Subsystem that owns this Measure. More... | |
| MeasureIndex | getSubsystemMeasureIndex () const |
| Return the MeasureIndex by which this Measure is known to the Subsystem that owns it. More... | |
| const Implementation & | getImpl () const |
| Implementation & | updImpl () |
| bool | hasImpl () const |
| int | getRefCount () const |
Friends | |
| class | Implementation |
This is the base class for all Measure handle classes.
This class is not templatized, and represents a Measure generically without knowledge of its value type. This is useful for most of the basic operations that are performed on measures, such as realization, adoption by a Subsystem, and other bookkeeping tasks. For most user purposes, the still-generic derived class Measure_<T> is a more useful handle since its value, of known type T, can be obtained. All the built-in concrete Measure types derive from Measure_<T> rather than AbstractMeasure. The various concrete Measures, built in or otherwise, may set restrictions on the kinds of types that are allowable as the template argument.
Note that handles always consist of exactly one pointer, and handle classes are always concrete (meaning they have no virtual methods).
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Provide an Implementation for this AbstractMeasure and bump its reference count.
This is also the default constructor for the base class producing an empty handle.
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Construct this handle with a given Implementation object (whose reference count will be bumped) and then let the given Subsystem adopt this Measure (which will again bump the Implementation's reference count, leaving us with two new handles).
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Shallow copy constructor copies the pointer from the source Implementation object and bumps its reference count.
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Destructor decrements the Implementation's reference count and deletes the object if the count goes to zero.
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Shallow assignment operator results in this handle referencing the same Implementation object as does the source.
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Shallow assignment operator destructs the current Implementation object (meaning its reference count is decremented and the object actually deleted only if the count goes to zero), then copies the Implementation pointer from the source and bumps its reference count.
This is what the copy assignment operator= does for this class.
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Deep assignment clones the Implementation object pointed to by the source handle, so that this handle ends up pointing to a new Measure object similar to the original but not yet contained in any Subsystem.
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Every Measure can produce a value, and some can provide one or more total derivatives with respect to time of that value.
This method reports how many are available: 1 -> first derivative d/dt is available, 2 -> first and second derivative d^2/dt^2 are available, etc. We interpret the "0th derivative" to be the Measure's value.
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At what Stage can we expect the value of this AbstractMeasure or one of its time derivatives to be available? Users of Measures will typically impose restrictions on the levels they will accept.
| [in] | derivOrder | Which derivative level is to be checked: 0 -> the value, 1 -> the 1st time derivative, etc. Must not be higher than the value returned by getNumTimeDerivatives(). |
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There can be multiple handles on the same Measure.
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1.8.6 
