Hi,

I trained a little bit with dynamic object generating. When I draw a line, sometimes drops move down, starting from the saved mouse position. This works perfectly:

Code:

(...)
if (mouseButton == LEFT) {
    // normal spray drawing foo
    stroke(pencil, dropAlpha);
    strokeWeight(20);
    line(pmouseX, pmouseY, mouseX, mouseY);

    // drop generating
    int randomValueForDrop = floor(random(0, 100));
    if (randomValueForDrop <= randomDrop) {
      ColorDrop setDrop = new ColorDrop(mouseX, mouseY, pencil);
      drop = (ColorDrop[]) append(drop, setDrop);
    }
(...)
 

well ... this is for the case, that I draw color lines. but I also want to reset the drawing field with the right mouse button. So I use background(0) which works for the drawn lines from the mouse, but the generated drops still move until they reach their max position.

How can i delete all objects from my object array "drop"?

stop drawing must not be used, because the array would grow to infinity by time ... but I think I got it! I'll try "ArrayList" instead of a normal array, because I can write e.g. drop.remove[i] ... be back in a moment

[UPDATE]
ArrayList doesn't work as I thought ... the function remove() doesn't work ... instead, I switched back to normal Arrays and created a new object called delDrops with zero elements ... when I want to reset the drops I only write:
Code:

drop = delDrops;
 

I don't get the point why this was so difficult ... maybe I should get more sleep