Removing Canvas

[Keith Baxter]

@Corjan

In managing resources, the "remove()" function does not work with canvas.
I want to remove all memory from a canvas so as to allow for resource management.
Is this code working the same as remove(myimage) but for canvas, or am I missing something.

Code: Select all

circle_id = canvas_add(0, 0, 200, 200)
canvas_draw(circle_id, function()
  _circle(100, 100, 100)
  _fill("red")
end)
canvas_draw(circle_id, function()
 circle_id=nil
end)
circle_id = canvas_add(0, 0, 200, 200)
canvas_draw(circle_id, function()
  _circle(100, 100, 100)
  _fill("blue")
end)

So as soon as I make the "circle_id=nil" I cannot use the node "circle_id" anymore and have to re add the canvas if I want to reinstate.

Keith

[Ralph]

Just add a boolean that decides of the canvas draws or not... ?

[Keith Baxter]

Just add a boolean that decides of the canvas draws or not... ?

Ralph,

Yes , But once drawn I want to know if it is still held in memory if it is redrawn like what happens with myimage()

I want to make sure that resources are cleared by removing the canvas then do a redraw.

I really need the process explained a little bit more in detail please.

Keith

[Keith Baxter]

Hi,

I think to explain better.

If I draw a canvas with a bunch of data. Then redraw the same canvas with another bunch of data, then redraw the same canvas with another bunch of data.

Is all the previous data still held in memory if not cleared? or, does the redraw automatically clear the previous data in memory.

I am asking this because Corjan added the remove(myimage) to remove images that were replaced by others as the old images were NOT cleared by replacing the image causing AM to give issues..

Hope you's are understanding this old "PITA" guy.

Keith