Documentation (#1110)

* Improving Contributions.md file

* Adding technical docs

CONTRIBUTING.md

@@ -9,9 +9,8 @@ Please consider the following :
 1. Fork it!
 2. Open an issue, if it does not already exist (Example: Add char 'A' in DrPepper Font) and ask to get assigned.
 3. Add your new features
-
-   - To add a new font visit [here](#font)
-   - To add a new character visit [here](#new-char)
+   - To add a new font visit [here](#add-a-new-font)
+   - To add a new character visit [here](#add-a-new-char-in-a-font)
 4. Update README.md (if needed)
 5. Add Screenshots of your working file
 6. Send us a pull request.

Documentation/Structure.md

@@ -0,0 +1,54 @@
+# This file contains the abstract working of the codebase
+
+## Structure
+
+### Font class:
+
+It is the parent of all font classes (amongus,drpepper,etc) all other font classes inherit attributes and methods from this class , the virtual functions are overridden in the child classes and are triggered on runtime using runtime polymorphism.
+
+##### Attributes and Methods:
+
+###### Private:
+
+`vector<vector<char>> letters;`
+2D vector to store the characters in each of the font
+This vector is what is actually printed on the screen
+
+`unsigned int def_rows;`
+Total number of rows in the font
+`unsigned int def_cols;`
+Total number of columns in the font
+`unsigned int char_rows;`
+The row size of each character in the font
+`unsigned int char_cols;`
+The column size of each character in the font
+`unsigned int curr_col;`
+The current position of the column in the font,
+Keeping track of this helps us insert new characters into the letters vector
+
+###### Protected:
+`char **getCharGrid(unsigned int rows = 0, unsigned int cols = 0)`
+return a 2D character grid of size `rows` and `cols` with each `char=' '`, which can be overwritten later, basically helps in creating new memory space for characters
+
+###### Public:
+
+`Fonts::Fonts(int def_rows, int def_cols)`
+
+This constructor initializes the rows and columns of the font
+and fills the vector `this.letter` with spaces
+
+`void printvector()`
+
+This function dumps the 2D vector `this.letter` on the screen
+
+`void pushchar(**character)`
+
+This function pushes a character into the 2D vector `this.letter` at the current column `curr_col` position
+
+**All Virtual functions:**
+These are to be overwriten in the child classes as each letter will be different in each font, each function is supposed to return a 2D character grid of the respective character
+virtual functions include:
+`virtual char **a()` to `virtual char **z()`
+`virtual char **A()` to `virtual char **Z()`
+`virtual char **Zero()` to `virtual char **Nine()`
+`virtual char **space()`