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text & textfile (Read 639 times)
anachronik
text & textfile
Jun 7th, 2007, 4:50pm  
Hi,

I've started a new sketch that should open a .txt file (containing all the alphabet letters) and then should display each letters on a single line with the text() function. The background should be divised in two area one fixed defined by the background function and the other a gradient fading in and out.

Right now, i'm starting this post cause my code is pretty messy (i'm sure there's simpler and clever solutions) and i can't figure out how to make the text appear above the gradient side.


Quote:


int fontSize = 48; //size of the displaying font
int bckColor = 0;  //variable for the red gradient
int i=0;
int j=0;
boolean ASC = true; //used to make the gradient fade in and out
PFont font;

void setup(){
 size(200,1024);
 noStroke();  
 smooth();
 font = loadFont("Verdana-48.vlw");
 background(bckColor);
}

void draw(){
 String lines[] = loadStrings("alphabet.txt");
 fill(bckColor,0,0);
 rect(width/2, 0, width/2, height);
 //use that block in order to make the gradient fade in & out
 //The boolean sets the action to perform
 if (ASC == true) {
   bckColor+=10;
 }
 else if (ASC == false) {
   bckColor-=10;
 }
 //Assign the boolean state according to the limits
 if (bckColor == 250)
   {ASC = false;
 }
 else if (bckColor == 0){
   ASC = true;
 }
 
 //font settings
 textFont(font, fontSize);
 textAlign(CENTER);
 fill(250);
 
 //display each letter on a new line
 //used a while in order to display it
 //only once
 while (j<lines.length){
 text(lines[j]+"\n",width/2,(j*35));
 j++;
 }
}




Any help appreciated.
Cheers.
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Ira
Re: text & textfile
Reply #1 - Jun 7th, 2007, 9:00pm  
the while loop in draw wasn't resetting the counter j, so the text was only getting drawn once; i replaced it with a for loop for convenience. i also shuffled around and streamlined some stuff.
have a look:

Code:

int fontSize = 48, bckColor;
PFont font;
String lines[];
int inverter = -1, fader = -2;
 
void setup(){
  size(200, 1024);
  background(0);
  noStroke();  
  smooth();
  font = loadFont("Verdana-48.vlw");
  textFont(font, fontSize);
  textAlign(CENTER);
  lines = loadStrings("alphabet.txt");
}
 
void draw(){
  fill(bckColor, 0, 0);
  rect(width/2, 0, width/2, height);
 
  if (bckColor>=250 || bckColor<=0){
    fader *= inverter;
  } 
  bckColor += fader;
   
  //display each letter on a new line
   fill(250);
   for  (int i=0; i<lines.length; i++){
     text(lines[i]+"\n", width/2, (i*35));
  }
}
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