For loop matrix index

Processing Coding Questions
12

Hello @niuuin,

Some suggestions:

  • use if statements to determine a “choice” outside of the loop.
    This is done once.

  • use switch\case statements inside the loop.
    Once choice is made for each step through the loop.

Example

 int choice; 

//if statements set choice

  for (int r = 0; r < total; r++) 
    {
    for (int c = 0; c < total; c++) 
      {
      choice = 0;
       switch(choice) {
      case 0: 
        r1 = r;
        c1 = c;
        break;
      case 1: 
        r1 = r;
        c1 = total-c-1;
        break;
      case 2: 
      // ???
        break;
      case 3: 
      // ?;
        break;  
      default:
        r1 = r;
        c1 = c;
        break;
        }
    // code
     }

References:

Look up the reference for clear():
https://processing.org/reference/clear_.html
That will make things clear!

Consider this at start of draw():
https://www.processing.org/reference/background_.html

:)

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