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()
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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]
|
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:
