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Index › Programming Questions & Help › Other Libraries › text() over text()
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text() over text() (Read 499 times)
GekoCH
text() over text()
Sep 4th, 2008, 10:55am  
Hello

I'm quite new to processing. I got the problem
with the text() tool. So I like to print the
current temperature and as you know it does change.
So I tried it with text(temperature, 0,0) But as
soon as the temperature changes you can't read it
anymore because it does overwrite the old value...

By the way I can’t set the Background back to a colour
because there is a Graph which is showing the temperature
trend.

How can I do that?

Thx
Geko
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JohnG
Re: text() over text()
Reply #1 - Sep 4th, 2008, 10:59am  
You do need to use background.. and then redraw both the graph and text each time.
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GekoCH
Re: text() over text()
Reply #2 - Sep 4th, 2008, 11:01am  
hmm okay

I tired this:

 fill(0, 0, 0);
 text(lastsensorValue + "C", 0, 0);
 fill(255, 0, 0);
 text(sensorValue + "C", 0, 0);
 lastsensorValue=sensorValue;

It works but I think all of you get a shock Cheesy
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GekoCH
Re: text() over text()
Reply #3 - Sep 4th, 2008, 11:26am  
With this code

size(200, 50);
background(0);

It doesn't paint all the surface black. Why? There is still some space left.

with
size(200, 200);
background(0);

no problem but it's too big for my application..

What can I do?

Thx
Geko
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PhiLho 
Re: text() over text()
Reply #4 - Sep 4th, 2008, 12:43pm  
I fear this is not the right place for this thread (Other Libraries?). Whatever, it will be moved if needed.

I see in the PApplet.java code, Processing enforces a minimum applet size of 128x128. So unless you change source and recompile it, you are out of luck.

BTW, if you want to preserve your graph to draw incrementally on it, you can erase the previous text with a simple call to rect() (so you will do a "local background").
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fry
Re: text() over text()
Reply #5 - Sep 4th, 2008, 11:22pm  
GekoCH wrote on Sep 4th, 2008, 11:26am:
With this code

size(200, 50);
background(0);

It doesn't paint all the surface black. Why There is still some space left.

the minimum window size is different for each operating system. we use 128x128 as the default minimum because that works across all three of the platforms that we support.
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GekoCH
Re: text() over text()
Reply #6 - Sep 5th, 2008, 6:29am  
Thx a lot for all the infomration! Great!

Thx
Geko
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