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Topic: problem - sending data from getLevel (Read 454 times) |
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mintra
Guest
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problem - sending data from getLevel
« on: Jan 23rd, 2004, 6:56pm » |
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I'm very new at processing and have very little programming background, might not understand any technical term.
This is the problem:
i use mic to get the sound from people, i need to use the data from Level of the sound.
but i couldn't send the data to the class i create, the code is below :
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// CODE// SONIA V2.5 -- Audio Live Stream.
BFont metaBold;
Txt mintraTxt;
int left2;
float left;
float left1;
void setup(){
size(512,200);
Sonia.start(this); // Start Sonia engine.
LiveInput.start(2); // Start LiveInput and return 256 FFT frequency bands.
mintraTxt = new Txt(left);
}
void loop(){
background(0,30,0);
// Get Level from microphone
float meterData = LiveInput.getLevel();
float left = meterData*3*height/4;
// Value Range: float from 0.0 to 1.0
// draw a volume-meter
strokeWeight(width);
stroke(0,100,0);
line(width/2 - 120, height, width/2 - 120 , height - left);
mintraTxt.write();
}
class Txt {
int left2;
Txt(float _left1) {
left1 = _left1;
}
void write() {
metaBold = loadFont("Meta-Bold.vlw.gz");
//float right = meterDataRight*height;
int left2 = int(left1);
textFont(metaBold, 24);
text(left2, width/2, height/2);
}
}
// Safely close the sound engine upon Browser shutdown.
public void stop(){
Sonia.stop();
super.stop();
}
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this is a test on sending the getLevel value out by text(), but i couldn't exactly get any value from it.
is there any mistake in my code?
could you help me pls!!!
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mKoser
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Re: problem - sending data from getLevel
« Reply #1 on: Jan 23rd, 2004, 8:03pm » |
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hi mintra,
i've just run quickly through your code, and here's a few comments:
a. if you define (int myVar; or float myVar; etc.) a variable in the beginning (before setup()) you should not define it within the loop, setup, class or whatever, if you define it again, it becomes a private variable to that method (within the brackects of, say, loop(){}).
b. you can pass-in variables to the class-methods (your write-method within the Txt-class). I've changed it so it the code does that now instead of relying on "global" varibles.
- - -
anyway, i hope this gets you going, i hope i didn't change too much in your code. 
Code:
BFont metaBold;
float left;
Txt mintraTxt;
void setup(){
size(512,200);
Sonia.start(this); // Start Sonia engine.
LiveInput.start(2); // Start LiveInput and return 256 FFT frequency bands.
mintraTxt = new Txt();
}
void loop(){
background(0,30,0);
// Get Level from microphone
// i've simplified this a bit
left = LiveInput.getLevel()*3*height/4;
// Value Range: float from 0.0 to 1.0
// draw a volume-meter
strokeWeight(width);
stroke(0,100,0);
line(width/2 - 120, height, width/2 - 120 , height - left);
// pass the variable 'left' to the Txt-object
// in order for this to be printed on the screen
mintraTxt.write(left);
}
class Txt {
Txt() {
}
// pass in a floating point, which then will be printed on the screen (the num variable)
void write(float num) {
metaBold = loadFont("Meta-Bold.vlw.gz");
textFont(metaBold, 24);
text(num, width/2, height/2);
}
}
// Safely close the sound engine upon Browser shutdown.
public void stop(){
Sonia.stop();
super.stop();
}
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please let us know when you have stuff for us to see, or any other problems!
+ mikkel
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| « Last Edit: Jan 23rd, 2004, 8:04pm by mKoser » |
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mikkel crone koser | www.beyondthree.com | http://processing.beyondthree.com
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mintra
Guest
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Re: problem - sending data from getLevel
« Reply #2 on: Jan 24th, 2004, 12:44am » |
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You save my life! Thank you very much. I need to learn a lot more about programming.
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