Create Point3D.cpp

Author: teddythinh

Point 3D/Point3D.cpp

@@ -0,0 +1,153 @@
+#include <iostream>
+#include <ctime>
+#include <fstream>
+#include <vector>
+#include <sstream>
+#include <regex>
+
+using namespace std;
+
+// Declaration of the class
+class Point2D;
+class Point3D;
+class RandomIntegerGenerator;
+class StringToPoint3D;
+class FileIO;
+
+// Implementation of the class
+class Point2D {
+private:
+	int _x;
+	int _y;
+public:
+	Point2D(int x, int y) {
+		this->_x = x;
+		this->_y = y;
+	}
+
+	int getX() { return this->_x; }
+	int getY() { return this->_y; }
+
+	virtual void print() { cout << "(" << getX() << "," << getY() << ")" << endl; }
+};
+
+class Point3D : public Point2D {
+private:
+	int _z;
+public:
+	int getZ() { return _z; }
+
+	void setZ(int z) { _z = z; }
+
+	Point3D(int x, int y, int z) : Point2D(x, y) { this->_z = z; }
+
+	void print() { cout << "(" << getX() << ", " << getY() << ", " << getZ() << ")" << endl; }
+};
+
+class RandomIntegerGenerator {
+public:
+	RandomIntegerGenerator() { srand(time(NULL)); }
+	int next() { return rand(); }
+	int next(int ceiling) { return rand() % ceiling; }
+	int next(int left, int right) { return rand() % (right - left + 1) + left; }
+};
+
+class StringToPoint3D {
+public:
+	bool isValid(string input) {
+		// the valid input is a string of 3 digits eg "1, 2, 3"
+		const string pattern = "\\d+, \\d+, \\d+";
+		regex rgx(pattern);
+		bool valid = regex_match(input, rgx);
+		return valid;
+	}
+
+public:
+	Point3D* convert(string input) {
+		Point3D* p = NULL;
+		if (isValid(input)) {
+			//! The first way is using tokenizer
+			/*
+			vector<string> tokens;
+			istringstream iss(input);
+			string token;
+			while (getline(iss, token, ',')) {
+				tokens.push_back(token);
+			}
+			int x = stoi(tokens[0]);
+			int y = stoi(tokens[1]);
+			int z = stoi(tokens[2]);
+			p = new Point3D(x, y, z);
+			*/
+
+			//! The second way is using stringstream
+			string x, y, z;
+			stringstream ss(input);
+			getline(ss, x, ',');
+			getline(ss, y, ' ');
+			getline(ss, y, ',');
+			getline(ss, z, ' ');
+			getline(ss, z);
+			p = new Point3D(stoi(x), stoi(y), stoi(z));
+		}
+		return p;
+	}
+};
+
+class FileIO {
+public:
+	void saveFile(string filename, vector<Point3D> data) {
+		ofstream outfile(filename);
+		for (int i = 0; i < data.size(); i++) {
+			outfile << "(" << data[i].getX() << ", " <<
+				data[i].getY() << ", " << data[i].getZ() << ")" << endl;
+		}
+		cout << "All points are saved successfully." << endl;
+		outfile.close();
+	}
+};
+
+int main() {
+	// Call class StringToPoint3D to convert string to Point3D
+	// Call vector<Point3D> data to store all Point3D objects
+	// Call class FileIO to save data to a file
+	StringToPoint3D stp;
+	vector<Point3D> points;
+	FileIO fio;
+
+	// Call class RandomIntegerGenerator to generate random integer
+	RandomIntegerGenerator rig;
+	int n = rig.next(3, 7);
+
+	// Request user to input n Point3D objects
+	cout << "Please input " << n << " points: ";
+	cout << " (The valid inputs are 3 digits separated by comma.)" << endl;
+	string input;
+
+	// Convert string to Point3D object and store them in vector<Point3D> data
+	for (int i = 0; i < n; i++) {
+		getline(cin, input);
+		if (stp.isValid(input)) {
+			Point3D* p = NULL;
+			p = stp.convert(input);
+			points.push_back(*p);
+		}
+		else {
+			cout << "Invalid input. Please input again!" << endl;
+			i--;
+		}
+	}
+
+	cout << endl;
+	// Print all Point3D objects in vector<Point3D> data
+	for (int i = 0; i < points.size(); i++) {
+		points[i].print();
+	}
+
+	cout << endl;
+	// Call saveFile to save all Point3D objects in vector<Point3D> data
+	fio.saveFile("point3d.txt", points);
+
+	cout << endl << "Press any key to exit..." << endl;
+	cin.get();
+}