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Flux control (Read 245 times)
brenin
Flux control
Jul 18th, 2008, 8:28pm  
Is there a way of writing a processing code rather than using the "setup() and draw()" structure (without losing the possibility of using functions)?

What I need is to control the execution of the beginning of my code. I want that the window pop's up with the information "press a key to start" before the code starts running the serial. When I run the following program, it only prints the information after the connection is done (I press a key, the connection is made, and then, it prints the information).

[code]void setup()
{
 size(1024, 768);
 
 background(random(255),random(255), random(255));

 // Set the font and its size (in units of pixels)  
 PFont fontA = loadFont("Ziggurat-HTF-Black-32.vlw");
 textFont(fontA, 45);
 text( "press a key",84, 339);
 text( "to start",114, 384);
 
 while (!keyPressed) {
 }

 port = new Serial(this, "COM40", 115200);
}[\code]

Any ideas?
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antiplastik
Re: Flux control
Reply #1 - Jul 20th, 2008, 9:05pm  
I would use something like a mode switch :

Code:
int mode;
final int MODE_WAIT_FOR_KEY = 0;
final int MODE_MAIN_LOOP = 1;

PFont fontA;

void setup() {
 fontA = loadFont("Ziggurat-HTF-Black-32.vlw");
 textFont(fontA, 45); 
 mode = MODE_WAIT_FOR_KEY;
}

void draw() {
 switch(mode) {
  case MODE_WAIT_FOR_KEY:
   waitForKey();
   break;
  case MODE_MAIN_LOOP:
   mainLoop();
   break;
 }
}

void waitForKey() {
 background(255);
 text( "press a key",84, 339);
 text( "to start",114, 384);
}

void mainLoop() {
 background(255);
 text( "connection has been made.",84, 339);
 text( "running the main loop now.",114, 384);
}

void keyPressed() {
 if (mode == MODE_WAIT_FOR_KEY) {
  port = new Serial(this, "COM40", 115200);
  mode = MODE_MAIN_LOOP;
 }
}
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