Problem with painting

Comments

• dave1707 Mod

  August 2017 edited August 2017 Posts: 7,903

  displayMode(FULLSCREEN)
  
  function setup()
      pos={}  -- x,y position
  end
  
  function draw()
      background(0)
      fill(255,0,0)
      for a,b in pairs(pos) do
          ellipse(b.x,b.y,40,20)  
      end 
  end
  
  function touched(t)
      if t.state==BEGAN then
          table.insert(pos,vec2(t.x,t.y))
      end
  end
  
• dave1707 Mod

  August 2017 Posts: 7,903

  @lidddl You can find a lot of information/examples by doing a forum search. The search area is at the top right above the New Discussion box.
• niorg2606

  August 2017 Posts: 79

  Get rid of the background function in draw()
• dave1707 Mod

  August 2017 edited August 2017 Posts: 7,903

  Here's a simple painting program. You can change the color and line size. Just drag your finger around the screen.

  function setup()
      backingMode(RETAINED)
      parameter.color("col",255)
      parameter.integer("size",2,40,2)    
  end
  
  function draw()
      if dr then
          stroke(col)
          strokeWidth(size)
          line(bx,by,tx,ty)
          bx,by=tx,ty
      end
  end
  
  function touched(t)
      if t.state==BEGAN then
          bx,by=t.x,t.y
      end 
      if t.state==MOVING then
          dr=true
          tx,ty=t.x,t.y
      end
      if t.state==ENDED then
          dr=false
      end
  end
  
• lidddl

  August 2017 Posts: 4

  Thank you for your answers.I will try it