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49 lines
1.1 KiB
C++
49 lines
1.1 KiB
C++
#ifndef OPENSHOT_FRACTION_H
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#define OPENSHOT_FRACTION_H
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/**
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* \file
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* \brief Header file for Fraction class
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* \author Copyright (c) 2011 Jonathan Thomas
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*/
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namespace openshot {
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/**
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* \brief This class represents a fraction
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*
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* Fractions are often used in video editing to represent ratios and rates, for example:
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* pixel ratios, frames per second, timebase, and other common ratios. Fractions are preferred
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* over decimals due to their increased precision.
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*/
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class Fraction {
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public:
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int num; ///<Numerator for the fraction
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int den; ///<Denominator for the fraction
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/// Default Constructor
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Fraction();
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/// Constructor with numerator and denominator
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Fraction(int num, int den);
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/// Calculate the greatest common denominator
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int GreatestCommonDenominator();
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/// Reduce this fraction (i.e. 640/480 = 4/3)
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void Reduce();
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/// Return this fraction as a float (i.e. 1/2 = 0.5)
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float ToFloat();
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/// Return this fraction as a double (i.e. 1/2 = 0.5)
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double ToDouble();
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/// Return the reciprocal as a Fraction
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Fraction Reciprocal();
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};
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}
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#endif
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