whorl

Probably quite a basic question...but is it possible to have multiple layers in the LCD to enable drawing on top of shapes that wont be affected by a [clear]?

In the patch below I want the moving orange dot to trace a drunk line above the 4 coloured disks below. However, because the previous position of the orange dot is erased by the [clear] object, the coloured disks are also erased.

I realise that the disks could also be drawn using a panel shape, which would be a part of the background, but I need to know their exact X,Y cords within the LCD.

In the patch below I want the moving orange dot to trace a drunk line above the 4 coloured disks below. However, because the previous position of the orange dot is erased by the [clear] object, the coloured disks are also erased. 

layers-in-lcd-for-drawing

if you want to have a "background" in lcd, you need to redraw it anytime something in "foreground" changes.

in you example this is still simple to realize, you just need to have a [t b l clear] after the dynamic dot stuff, and retrigger the 4 messages from the b.

the more complex an lcd application is, the more complicated redrawing can become. but that how it works. :)

p.s. 35-40 ms should be fine for a display-only

Great thanks! Very basic stuff that I should really know!

This is not something I'm all that familiar with but I think you could implement this using a sprite to generate the moving dot without re-drawing the background.

see the 'sprites' sub-patch in lcd.maxhelp.

This is not something I'm all that familiar with but I think you could implement this using a sprite to generate the moving dot without re-drawing the background. 

Very interesting question. I have a similar question. How can I make that black dot shake only in one color area?

Very interesting question. I have a similar question. How can I make that black dot shake only in one color area?
Any help much appreciated!

just constrain the output of drunk-- here's one way:

but you're probably better off using sprites

just constrain the output of drunk-- here's one way:


"layers" in LCD for drawing