What made my for loop point all the lines to the centre?

Mattise19

This isn't really a problem i'm having but i'd just like to understand better what's going on. Following the instructions in the book, i embedded two for loops into each other and gave them parametres that point the lines to centre, here's the code:

background(0); fill(255); stroke(102); for (int y = 20; y <= height-20; y += 10) { for (int x = 20; x <= width-20; x += 10) { ellipse(x, y, 4, 4); line(x, y, 240, 60);

Can someone please explain to me what causes the loops to point those lines from the ellipses to the centre specifically? Would just like know, thanks in advance!

KevinWorkman

The loops create x and y variables that increment in a grid around the screen.

Then the line(x, y, 240, 60) line draws a line from each x and y position to the position 240,60 which is in the middle of your screen. Try changing the size of your window to see this. Or draw a red ellipse at 240,60. Or change that 240,60 to mouseX, mouseY.

Mattise19

Of course, why didn't i think of that before, thanks :)