Ok, thank you
my intention with this app: it is only a model for a more complex software; I need a great deal of lines and other graphic elements to be drawn at each canvas refreshing cycle, and the number of them is increasing in time; so I am looking for a way to avoid continuous redrawing of graphics: I thougth to obtain this by:
1 showing an image
2 drawing some graphics on it
3 grabbing image with added graphics
4 showing the changed image
and so on
maybe this is not the fastes method ...
my intention with this app: it is only a model for a more complex software; I need a great deal of lines and other graphic elements to be drawn at each canvas refreshing cycle, and the number of them is increasing in time; so I am looking for a way to avoid continuous redrawing of graphics: I thougth to obtain this by:
1 showing an image
2 drawing some graphics on it
3 grabbing image with added graphics
4 showing the changed image
and so on
maybe this is not the fastes method ...