Mouse lagging and can't make fullScreen() in 4K

Processing Beginners
1 
void setup(){
  fullScreen();
  noCursor();
}

void draw(){
  background(#f097ff);
  drawCursor(mouseX,mouseY);
  text("("+mouseX+","+mouseY+")",width/2,height/2);
}

void drawCursor(float x,float y){
  final float W = width/1920*11.00, H1 = height/1080*16.00, H2 = sqrt(H1*H1-W*W)*14/13;
  fill(0);
  triangle(x,y,x,y+H1,x+W,y+H2);
}

So I’m trying to create a simple alter cursor shape. The problem is the cursor in this program lag severely. That is if I comment the noCursor(),the system’s cursor and the black triangle cursor can’t sync very well.

Also my screen is 3840x2160, but the program only runs under 1080P even with fullScreen().

1 Like
2

Hi @doesThisReallyMatter (sometimes yes :wink: )

So you have a 4K screen and when you run your sketch it runs fullScreen but the actual resolution is 1920x1080? Did you try to print the width and height values?

3

Yeah. The last line inside draw(）is to print mouseX & Y as (x,y) on the screen, and the maximum it can get is (1919,1079).

BTW I put ‘doesThisReallyMatter’ after ‘user name’ when singing up lol.

1 Like