Forum Discussion

cpjamloki's avatar
cpjamloki
Visitor
11 years ago

remove a particular bitmap in roScreen without clear screen

Is it possible to remove a particular bitmap(image in fixed position) in roScreen? on key event without clearing whole screen like in Imagecanvas as remove a particular layer.

for this i am clearing whole screen and then redrawing all bitmap in there fixed position. it takes a long process.
Roku Developer Program

2 Replies

  • rarebrds's avatar
    rarebrds
    Channel Surfer
    11 years ago
    I don't think this is possible, the screen needs to be redrawn each time on each frame update. If you don't clear the screen, it will continually stack items. What do you mean by a long process? Is there noticeable delay between the updates? How many objects are you sending to the screen? I've seen slowdown around ~50 objects with the streaming stick. I've not encountered any slowdown with the Roku 3 though.
  • NewManLiving's avatar
    NewManLiving
    Visitor
    11 years ago
    You can use a compositor with sprites to emulate the functionality of an imagecanvas. However, rarebrds is correct in asking why is it taking so long. Are you recreating the bitmaps each time, do you have to download them each time ???