Drawing rectangles

ZulrahSeto

this is the question: Write a program that allows the user to click in 2 locations to draw a blue rectangle (where the 2 points you clicked on serve as the opposite diagonal corners).

koogs

what do you want? for us to do this for you?

koogs

(be careful how you answer)

_vk

try writing it in english first like:

//Pseudo

// some global vars to store clicked position
//a boolean as a flag?

//in setup
////usual stuff


//in draw
//// clear bg
//// if triggered
////// calc rect function parameters using both cordinates you got
////// with default rectMode they are (x_pos, y_pos, width, height)
//////so first two are first stored cordinates, 3rd and 4th, an easy calc away
////// set style
////// do draw a rect using the cordinates 



//in mousepressed
////store clicked positions (mouseX, mouseY)
////first click first store slot
////second click second slot
//// if 2 pos stored, fire drawing (a flag?)

try some code and come back with questions if you need more :)

GoToLoop

I've got this very old online example which waits for 2 mouse clicks in order to draw a line():
http://studio.processingtogether.com/sp/pad/export/ro.9c9DCUznTwot6/latest
It's very easy to adapt it to draw a rect() instead. Just follow @_vk's advice! ;)

_vk

instead of a flag @GoToLoop used a smart event driven solution... Meaning that the sketch only runs when someone clicks...