Rendering of Segmented Numbers

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Introduction

Before a while, I needed to implement rendering of numbers in one project (C++ MFC), where it wasn't possible to simply use rendering of text using font. So I made the prototype in C# WinForms and maybe someone will find it useful.

Background

I'm using classical old-school approach -> 7-segments rendering of numbers.

Source Code

I've created SegmentRender class for rendering of segmented numbers.

At first, I've created Enum of segment type for better orientation.

        private enum Segment
        {
            Up, LeftUp, RightUp, Middle, LeftDown, RightDown, Down
        }

Here is simple 2D array [10 digits, 7 segments] for definition of segments used for each digit:

        static int[,] segValues =
        {
               {1, 1, 1, 0, 1, 1, 1},
               {0, 0, 1, 0, 0, 1, 0},  
               {1, 0, 1, 1, 1, 0, 1},  
               {1, 0, 1, 1, 0, 1, 1},  
               {0, 1, 1, 1, 0, 1, 0},  
               {1, 1, 0, 1, 0, 1, 1},  
               {1, 1, 0, 1, 1, 1, 1},  
               {1, 0, 1, 0, 0, 1, 0},  
               {1, 1, 1, 1, 1, 1, 1},  
               {1, 1, 1, 1, 0, 1, 1}
        };

Then I defined 3 functions:

public void DrawNumber(int n, Graphics g, Point pos)

Here, the maximal order of our Int32 number is found:

            while (true)
                if (n < Math.Pow(10, ++maxOrder))
                    break;

Then, each single digit is found and called to be rendered:

            for (int ord = 0; ord < maxOrder; ord++)
            {
                int dig = n / Convert.ToInt32(Math.Pow(10, ord)) % 10;

                Point digPos = new Point
                    (pos.X + (maxOrder - ord - 1) * (size + space), pos.Y);

                DrawDigit(dig, g, digPos);
            }

The next function:

private void DrawDigit(int n, Graphics g, Point pos)

In this function, all single digits are called to be rendered:

            for (int i = 0; i < 7; i++)
                if (segValues[n, i] == 1)
                    DrawSegment((Segment)i, g, pos);

And the last rendering function:

private void DrawSegment(Segment s, Graphics g, Point pos)

Here I've defined all segments points (x, y) and rendered these segments, which are for actual digit enabled in variable segValues.

That's all, simple enough. The rest of the code is only handling of the application form.