OOP_ClassProject

Calculator

Programming calculator's functions and a special Paint form to display various geometrical shapes.

Some of interesting parts of the project is:

1. Poland Equation

Create a stack then push all elements of the equation into this stack. When an operator is caught, stack.pop() the last 2 numerical elements out.

            `if (IsOperator(s))

            {
            
                if(binaryOperatorList.Contains(s))
                
                {
                    d1 = ReadValue(stack.Pop(), dict);
                    
                    d2 = ReadValue(stack.Pop(), dict);
                    
                    result = EvalBinaryOperator(d2, d1, s);
                    
                    stack.Push(result);
                    
                }
                
                if(unaryOperatorList.Contains(s))
                
                {
                
                    d1 = ReadValue(stack.Pop(), dict);
                    
                    result = EvalUnaryOperator(d1, s);
                    
                    stack.Push(result);
                    
                }
                
            }
            
            else
            
                stack.Push(s);`

2. Draw Parallelopiped and Cuboid

Create a parallelogram first, before drawing-line function connects the 2 of them to form a parallelopiped.

    `private void btnPrl_Clicked(Pen p, Point p1, Point p2, Point p3){
    
        Point p4 = new Point(p2.X + p3.X - p1.X, p2.Y + p3.Y - p1.Y);
        
        g.DrawLine(p, p1, p2); g.DrawLine(p, p1, p3); g.DrawLine(p, p2, p4); g.DrawLine(p, p3, p4);
        
        pictureBox1.Image = bmp;
        
    }`

To connect 2 parallelograms:

     `private void btnPrlp_Clicked(Pen p, Point p1, Point p2, Point p3, Point p_1){
     
        Point p4 = new Point(p2.X+p3.X-p1.X, p2.Y+p3.Y-p1.Y);
        
        Point p1Top_1 = new Point(p_1.X - p1.X, p_1.Y - p1.Y);
        
        Point p_2 = AddPoint(p2, p1Top_1); Point p_3 = AddPoint(p3, p1Top_1); Point p_4 = AddPoint(p4, p1Top_1);
        
        //Point p_2 = new Point(p_1.X + p2.X - p1.X, p_1.Y + p2.Y - p1.Y); 
        
        //Point p_3 = new Point(p_1.X + p3.X - p1.X, p_1.Y + p3.Y - p1.Y); 
        
        //Point p_4 = new Point(p_2.X + p_3.X - p_1.X, p_2.Y + p_3.Y - p_1.Y);

        
        btnPrl_Clicked(p,p1,p2,p3); btnPrl_Clicked(p,p_1,p_2,p_3);
        
        g.DrawLine(p,p1,p_1); g.DrawLine(p,p2,p_2); g.DrawLine(p,p3,p_3); g.DrawLine(p,p4,p_4);
        
        listBox1.Items.Add("p1.X: " + p1.X + "   p1.Y: " + p1.Y); listBox1.Items.Add("p2.X: " + p2.X + "   p2.Y: " + p2.Y); listBox1.Items.Add("p3.X: " + p3.X + "   p3.Y: " + p3.Y); listBox1.Items.Add("p4.X: " + p4.X + "   p4.Y: " + p4.Y);
        
        listBox1.Items.Add("p_1.X: " + p_1.X + "   p_1.Y: " + p_1.Y); listBox1.Items.Add("p_2.X: " + p_2.X + "   p_2.Y: " + p_2.Y); listBox1.Items.Add("p_3.X: " + p_3.X + "   p_3.Y: " + p_3.Y); listBox1.Items.Add("p_4.X: " + p_4.X + "   p_4.Y: " + p_4.Y);
        
        comboBox1.Enabled = true;
        
        pictureBox1.Image = bmp;
    }`