dyka

I am building a custom UI component using the lcd object. The component has several png pictures drawn on top of each other and finally some text on top of the pngs. When I prepare a long message with all my "drawpict" and "write"s, I get a nicely drawn UI on the lcd.

Then I wanted to have a hundred of these components but somehow only the first batch of commands("drawpict"s and "write") get executed. After the "write" command (which is the last command in my patch) the "drawpict" does not draw anything for a while.

To be more clear let's say, using an uzi, I am creating 100 of these components side by side. The first gets drawn properly but after the first I see no pictures but only text. Once a certain time has passed (eg. while the 10th component is being drawn) I again get the pictures and text together but afterwards the pictures dissapear (though the text is still there).

Somehow once a "write" message is being executed, the lcd is not able to draw a picture for a while.

Did anyone else have a similar problem?
Please enlighten me :)

lcd-and-write-method

Can you provide a simple patch and some steps to reproduce what you are seeing?

Now, if you experiment with the delay time in this patch, you will see that the "write" method can not be processed faster than 40ms.

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i suppose what gets lost is the readpict (or whatever it is called) and not the writepict. writepict should not fail to be executed, but reading from disk easily gets lost in bigger patches.

for big lcd guis maybe start using receives instead of loadbangs ... then you can control delays and/or order from outside.

>Did anyone else have a similar problem?
>Please enlighten me 

I experimented a little further and it looks as though the write method takes about 40ms to execute. The "drawpict" commands that are being sent at the time, do not get executed.

If so, why is it so slow to write text on a lcd? 

I experimented a little further and it looks as though the write method takes about 40ms to execute. The "drawpict" commands that are being sent at the time,  do not get executed. 

If so, why is it so slow to write text on a lcd? 


I tried the same commands on jit.lcd and over there it works fine.

lcd and "write" method