oops_in_cpp/Rhombus.cpp at master · shahakshay94/oops_in_cpp · GitHub

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#include "Rhombus.h"
#include <cassert>
#include<math.h>

using namespace std;

Rhombus::Rhombus(int rhomDiagonal, const string &desc) : Shape("Rhombus", desc), diagonal(rhomDiagonal) {

    if (diagonal % 2 == 0)
        ++diagonal;
    assert(diagonal > 0);
}

Rhombus::~Rhombus() = default;

const Rhombus &Rhombus::operator=(const Rhombus &rhs) {
    if (this == &rhs) return *this;
    Shape::operator=(rhs);
    diagonal = rhs.diagonal;
    return *this;
}

int Rhombus::getDiagonal() const {
    return diagonal;
}

string Rhombus::toString() const {
    string temp{Shape::toString()};
    temp.append("\nB. box width:  " + to_string(bBoxWidth()));
    temp.append("\nB. box height:  " + to_string(bBoxHeight()));
    temp.append("\nScr area:      " + to_string(scrArea()));
    temp.append("\nGeo area:      " + doubleToString(geoArea(), 2));
    temp.append("\nScr perimeter: " + to_string(scrPerimeter()));
    temp.append("\nGeo perimeter: " + doubleToString(geoPerimeter(), 2));
    return temp;
}

void Rhombus::scale(int n) {
    if (n != 0) {
        if (n % 2 == 0) // n is even
        {
            if (getDiagonal() + n > 0)
                diagonal += n;
        } else // n is odd, find next even value for n
        {
            if (n > 0) // if positive increase n by one
            {
                ++n;
                if (getDiagonal() + n > 0)
                    diagonal += n;
            } else // if negative reduce n by one
            {
                --n;
                if (getDiagonal() + n > 0)
                    diagonal += n;
            }
        }
    }
}

double Rhombus::geoArea() const {
    return getDiagonal() * static_cast<double>(getDiagonal()) / 2;
}

double Rhombus::geoPerimeter() const {
    return 2 * sqrt(2) * getDiagonal();
}

int Rhombus::scrArea() const {
    int n{getDiagonal() / 2}; // n = floor(diagonal / 2), diagonal positive
    return 2 * n * (n + 1) + 1;
}

int Rhombus::scrPerimeter() const {
    return 2 * (getDiagonal() - 1);
}

int Rhombus::bBoxHeight() const {
    return getDiagonal();
}

int Rhombus::bBoxWidth() const {
    return getDiagonal();
}

void Rhombus::draw(Canvas &canvas, int c, int r, char fg, char bg) const {
    c += diagonal / 2; // fixes position, aligns leftmost char to c, instead of c as center.

    for (int h = 0; h < diagonal; h++) // for each row from 0 to diagonal - 1
    {
        if (h <= diagonal / 2) // upper half increases
        {
            for (int w = 0; w <= h; w++) {
                canvas.putChar(fg, c + w, r + h); // write to right side
                canvas.putChar(fg, c - w, r + h); // write to left side
            }
        }
        if (h > diagonal / 2) // lower half decreases
        {
            for (int w = diagonal - 1 - h; w >= 0; w--) {
                canvas.putChar(fg, c + w, r + h);
                canvas.putChar(fg, c - w, r + h);
            }
        }
    }
}

ostream &operator<<(ostream &ostr, const Rhombus &rhs) {
    const Shape *shapePtr = &rhs;
    ostr << *shapePtr;
    ostr.precision(2);
    ostr << "\nB. box width:  " << rhs.bBoxWidth()
         << "\nB. box height:  " << rhs.bBoxHeight()
         << "\nScr area:      " << rhs.scrArea()
         << "\nGeo area:      " << fixed << rhs.geoArea()
         << "\nScr Perimeter: " << rhs.scrPerimeter()
         << "\nGeo Perimeter: " << rhs.geoPerimeter();
    return ostr;
}