Hi all !!
i'm new in rebol and i'm not good in english so i'd try to be clear.
I just test a script from auverlot's book, here it is :
**********
REBOL []
pos-xy: none
view layout [
b: box 400x400 white feel [
detect: func [face event] [
switch event/type [
move [
pos-xy: event/offset
append b/effect/draw reduce [pos-xy]
show b
]
down [
pos-xy: event/offset
append b/effect/draw reduce ['circle pos-xy 30 'line]
show b
]
alt-down [
append b/effect/draw reduce ['fill-pen (random 255.255.255)
'line]
]
]
]
redraw: none
] effect [draw ['pen black 'line]]
]
************
So first when i moved around the mouse over the box very fast the pen seems
to follow very good.
but if i click down just one time (a circle is paint in the box), then
suddenly the pen seems to
be late. if i stop move the mouse, the pen ends up arriving, and if i move
fast again, the pen is
always late.
I don't understand why a simple draw circle command in a dynamic drawing
decrease the drawing performance.
I hope that you've understand my question. Thanks in advance to all.
Fred.
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