Wk4 Repeat Ex4 grid by row and columns settings

//Carlyn Maw, January 2014

//Week 4 "Rinse, repeat", Example 4

//Draw squares based on how many rows and cols are wanted

​

//how many rows should there be

int rect_numberofRows = 10;

//how many columns should there be

int rect_numberofCols = 20;

//what is the minimum amount of space between squares

int rect_minMargin = 5;

​

//Variables whose value will be determined by math

int rect_totalWidthNeeded;

int rect_width;

int rect_totalHeightNeeded;

int rect_height;

int offsetX;

int offsetY;

​

void setup() {

  //how big is the stage

  size(300, 300);

​

  //figure out how wide the rectangles can be

  rect_totalWidthNeeded = (width-rect_minMargin)/rect_numberofCols;

  rect_width = rect_totalWidthNeeded - rect_minMargin;

​

  //figure out how tall the rectangles can be

  rect_totalHeightNeeded = (height-rect_minMargin)/rect_numberofRows;

  rect_height = rect_totalHeightNeeded - rect_minMargin;

​

  //make sure there is a margin at the top and on the left and that 

  //its size will leave the grid centered

  offsetX = (width-((rect_numberofCols*rect_totalWidthNeeded)-rect_minMargin))/2;

  offsetY = (height-((rect_numberofRows*rect_totalHeightNeeded)-rect_minMargin))/2;

​

  //draws the squares one column at a time

  for (int i = 0; i < rect_numberofCols; i++) {

    for (int j = 0; j < rect_numberofRows; j++) {

      rect((i*rect_totalWidthNeeded)+offsetX, (j*rect_totalHeightNeeded)+offsetY, rect_width, rect_height);

    }

  }

}

​

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