Initial check-in of OpenShot Library

src/Fraction.cpp

@@ -0,0 +1,45 @@
+#include "../include/Fraction.h"
+
+using namespace openshot;
+
+// Constructor
+Fraction::Fraction() :
+	num(1), den(1) {
+}
+Fraction::Fraction(int num, int den) :
+	num(num), den(den) {
+}
+
+// Return this fraction as a float (i.e. 1/2 = 0.5)
+float Fraction::ToFloat() {
+	return float(num) / float(den);
+}
+
+// Return this fraction as a double (i.e. 1/2 = 0.5)
+double Fraction::ToDouble() {
+	return double(num) / double(den);
+}
+
+int Fraction::GreatestCommonDenominator() {
+	int first = num;
+	int second = den;
+
+	// Find the biggest whole number that will divide into both the numerator
+	// and denominator
+	int t;
+	while (second != 0) {
+		t = second;
+		second = first % second;
+		first = t;
+	}
+	return first;
+}
+
+void Fraction::Reduce() {
+	// Get the greatest common denominator
+	int GCD = GreatestCommonDenominator();
+
+	// Reduce this fraction to the smallest possible whole numbers
+	num = num / GCD;
+	den = den / GCD;
+}