expressionnode.hxx

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#pragma once
 
/* Definition of ExpressionNode interface */
 
namespace slideshow::internal
    {
        class AnimationFunction
        {
        public:
            virtual ~AnimationFunction() {}
 
            virtual double operator()( double t ) const = 0;
 
        };
 
        class ExpressionNode : public AnimationFunction
        {
        public:
            virtual bool isConstant() const = 0;
        };
 
}
 
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