Refinement of AnimationFunction. More...
#include <expressionnode.hxx>
Inheritance diagram for slideshow::internal::ExpressionNode:
Collaboration diagram for slideshow::internal::ExpressionNode:
Public Member Functions | |
| virtual bool | isConstant () const =0 |
| Predicate whether this node is constant. More... | |
 Public Member Functions inherited from slideshow::internal::AnimationFunction | |
| virtual | ~AnimationFunction () |
| virtual double | operator() (double t) const =0 |
| Operator to calculate function value. More... | |
Detailed Description
Refinement of AnimationFunction.
This interface is used by the SMIL function parser, to collapse constant values into precalculated, single nodes.
Definition at line 56 of file expressionnode.hxx.
Member Function Documentation
◆ isConstant()
|
pure virtual |
Predicate whether this node is constant.
This predicate returns true, if this node is neither time- nor ViewInfo dependent. This allows for certain optimizations, i.e. not the full expression tree needs be represented by ExpressionNodes.
- Returns
- true, if this node is neither time- nor ViewInfo dependent
The documentation for this class was generated from the following file:
