This is a Function_ subclass whose output value is a linear function of its arguments: f(x, y, ...) = ax+by+...+c. More...
Inheritance diagram for SimTK::Function_< T >::Linear:
Public Member Functions | |
| Linear (const Vector_< T > &coefficients) | |
| Create a Function_::Linear object. More... | |
| T | calcValue (const Vector &x) const override |
| Calculate the value of this function at a particular point. More... | |
| T | calcDerivative (const Array_< int > &derivComponents, const Vector &x) const override |
| Calculate a partial derivative of this function at a particular point. More... | |
| int | getArgumentSize () const override |
| Get the number of components expected in the input vector. More... | |
| int | getMaxDerivativeOrder () const override |
| Get the maximum derivative order this Function_ object can calculate. More... | |
| Linear * | clone () const override |
| Create a new heap-allocated copy of this concrete Function. More... | |
| T | calcDerivative (const std::vector< int > &derivComponents, const Vector &x) const |
| This provides compatibility with std::vector without requiring any copying. More... | |
| Public Member Functions inherited from SimTK::Function_< T > | |
| virtual | ~Function_ () |
| T | calcDerivative (const std::vector< int > &derivComponents, const Vector &x) const |
| This provides compatibility with std::vector without requiring any copying. More... | |
Detailed Description
template<class T>
class SimTK::Function_< T >::Linear
This is a Function_ subclass whose output value is a linear function of its arguments: f(x, y, ...) = ax+by+...+c.
Constructor & Destructor Documentation
◆ Linear()
|
inlineexplicit |
Create a Function_::Linear object.
- Parameters
-
coefficients
The coefficients of the linear function. The number of arguments expected by the function is equal to coefficients.size()-1.
coefficients[0] is the coefficient for the first argument, coefficients[1] is the coefficient for the second argument, etc. The final element of coefficients contains the constant term.
Member Function Documentation
◆ calcValue()
|
inlineoverridevirtual |
Calculate the value of this function at a particular point.
- Parameters
-
x the Vector of input arguments. Its size must equal the value returned by getArgumentSize().
Implements SimTK::Function_< T >.
◆ calcDerivative() [1/2]
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inlineoverridevirtual |
Calculate a partial derivative of this function at a particular point.
Which derivative to take is specified by listing the input components with which to take it. For example, if derivComponents=={0}, that indicates a first derivative with respective to component 0. If derivComponents=={0, 0, 0}, that indicates a third derivative with respective to component 0. If derivComponents=={4, 7}, that indicates a partial second derivative with respect to components 4 and 7.
- Parameters
-
derivComponents
The input components with respect to which the derivative should be taken. Its size must be less than or equal to the value returned by getMaxDerivativeOrder().x
The Vector of input arguments. Its size must equal the value returned by getArgumentSize().
- Returns
- The value of the selected derivative, which is of type T.
Implements SimTK::Function_< T >.
◆ getArgumentSize()
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inlineoverridevirtual |
Get the number of components expected in the input vector.
Implements SimTK::Function_< T >.
◆ getMaxDerivativeOrder()
|
inlineoverridevirtual |
Get the maximum derivative order this Function_ object can calculate.
Implements SimTK::Function_< T >.
◆ clone()
|
inlineoverridevirtual |
Create a new heap-allocated copy of this concrete Function.
For backwards compatibility this is not pure virtual; it has a default implementation that throws an exception if called. However, it should always be implemented.
Reimplemented from SimTK::Function_< T >.
◆ calcDerivative() [2/2]
|
inline |
This provides compatibility with std::vector without requiring any copying.
The documentation for this class was generated from the following file:
