ActionScript 2.0 :: Drawing API Can Quickly Slow Down A Movie
Mar 12, 2010
It seems the drawing API can quickly slow down a movie, just by drawing a bunch of static (unanimated) lines on the screen. In contrast to movieclips, of which it can handle thousands without slowdown. Makes me wonder why it doesn't just handle drawn lines as movieclips? Why does the linedrawing become slow so quickly, and is there any way to prevent this from happening?I written a quick test, and it appears to slow down, while drawing, after just 300 lines, while only after 2000 mc's the fps start to dip slghtly, while placing them. I also tried drawing every line in it's own layer but it remains much the same.
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Sep 4, 2011
i'm developing a game for mobile devices where I need to draw many objects and some lines(1~3 just occasionally).
my problem in short is: Line drawing is too slow for iPhone4
objects are drawn with bitmap, so it's pretty fast with GPU support. drawing lines are slow.
a end point of a line follows mouse cursor, so it changes every frame.
here's how i did it
initialization step:
var img:Shape = new Shape();
addChild( img );
[Code]....
that gives me 47~48 FPS on my iPhone. +2 FPS but still way too slow for a simple line.
without the line, i can maintain my whole game around 30 FPS. with the line, it goes below 20.
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[Code]....
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[Code]...
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[code]....
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Oct 8, 2003
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Aug 15, 2009
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Jan 14, 2009
The following works just fine:
[Code].....
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[Code]....
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Jul 21, 2009
im new to this forum and kinda new to flash and php together...i have this project that would load a swf movie on a drawing board and user could draw something over then swf movie. It should be able to save the drawings to the database, so that the user could just load it for later use. for example if the user draws a zigzag line at frame 5 of swf movie and on frame 10 of the swf movie deletes the zigzag line and draw a circle and then saves it. then loads it later, from frame 1 to 4 of the swf movie the zigzag line should not show but on frame 5 to frame 9 it would show and on frame 10 shows only the circle. or just on the specific frame number of the swf movie it will show. like when user draw on frame 6 then on before or after frame 6 it wont show..the second one might be a bit easier to implement.
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