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Index › Programming Questions & Help › Syntax Questions › How to use println to write " or (

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How to use println to write " or ( (Read 421 times)

petitjosdu91

How to use println to write " or (
Feb 25^th, 2009, 7:24pm

Hello, I'm new using Processing (or I'm new "again" in fact because I used it long ago), and I keep trying to print the symbol " or the parenthesis and I can't.
In fact, I would like to create a file where there will be a big amount of lines automatically created . There is the program I use :

PrintWriter output;
float x,y,z;
PFont font;

void setup(){
output = createWriter("coord.pde");
font = loadFont("Eureka-90.vlw");
size(500,500,P3D);
noLoop();
camera(0,0,100,
0,0,0,
0,1,0);
stroke(0);

}

void draw()
{
textFont(font,16);
for(int i=0; i<100; i++)
{
x=random(-50,50);
y=random(-50,50);
z=random(-50,50);
fill(255);
text("jo",x,y,z);
line(0,0,0,x,y,z);
output.println("a"+","+x+","+y+","+z+")");
output.println("b"+","+x+","+y+","+z+")");
}

println("fin--");
}

void mousePressed() {
output.flush(); // Cliquer pour créer le fichier
output.close();
//Remplacer "a" par " text("jo" "
//et "b" par " line'"jo" "
exit();

And the lines that causes the problem are here : output.println("a"+","+x+","+y+","+z+")");
output.println("b"+","+x+","+y+","+z+")");

because I would like to write : output.println("text("jo""+x+","+y+","+z+")")

but I can't.
Can someone help me please ?!

JohnG Ex Member	Re: How to use println to write " or ( Reply #1 - Feb 25^th, 2009, 8:11pm You print " with \" the ( should print just fine on it's own.

petitjosdu91

Re: How to use println to write " or (
Reply #2 - Feb 25^th, 2009, 11:27pm

I'm sorry, I didn't really understand.
Moreover, Can you tell me how to "call" a program?
In fact, I have 2 files in my folder and I want to call the second one in the principal (executing all what is wrote in the second file like if it was directly written in the first file)?
Thanks for your answer

Ptijo

ps: Ok, I understood what you meant and I replace those lines by :
output.println("text(\"jo\","+x+","+y+","+z+")");
output.println("line(0,0,0,"+x+","+y+","+z+")");

mots Junior Member Offline Posts: 62	Re: How to use println to write " or ( Reply #3 - Feb 25^th, 2009, 11:53pm try this way : output.println("text(\"jo\""+x+","+y+","+z+")");

PhiLho

Re: How to use println to write " or (
Reply #4 - Feb 26^th, 2009, 7:27am

Beside your original problem, I think you use a wrong solution. A sketch can't compile another sketch (unless going great lengths). A more classical approach is to generate a data file (eg. in CSV format, for which Processing offers parsing functions) then to use this data to do something on screen.

J'espère que je suis clair...

HTH.

petitjosdu91

Re: How to use println to write " or (
Reply #5 - Feb 26^th, 2009, 8:46am

Ok, I didn't really understood (I have a very bad english), so you think I should create a CSV file that I would call in the other program?

Here is the principal program, I have also the data file(that is automatically created with the above program) :

int r = 100;
float t1, t2;
PFont font;
int l=0;

void setup()
{
size(500,500,P3D);
background(200);
stroke(0);
font = loadFont("Eureka-90.vlw");
textFont(font,8);
}

void draw()
{
lights();
background(200);

//Here I manually insert the lines which were in the data file, How to make otherwise please?!

text("jo",37.297913,48.94078,-28.680824);
line(0,0,0,37.297913,48.94078,-28.680824);
text("jo",7.151161,36.59278,-24.586279);
line(0,0,0,7.151161,36.59278,-24.586279);
line(0,0,0,-39.17318,-3.186924,17.654419);
text("jo",24.305038,14.645805,-4.409176);
[...]
line(0,0,0,24.305038,14.645805,-4.409176);
text("jo",8.098721,11.970192,28.96045);
line(0,0,0,8.098721,11.970192,28.96045);
text("jo",-44.684143,37.396683,-28.996187);
line(0,0,0,-44.684143,37.396683,-28.996187);

t1=mouseX-250;
t1=radians(t1);//t1=-t1;
t1=map(t1,radians(-250),radians(250),0,PI);
//println(t1);
t2=mouseY-250;
t2=radians(t2);t2=-t2;
t2=map(t2,radians(-250),radians(250),-PI/2,PI/2);

camera(r*cos(t1), r*sin(t2), 100,
0.0, 0.0, 0.0,
0.0, 1.0, 0.0);
}

void mousePressed()
{
if ((mousePressed==true)&&(l==0))
{loop(); l=1;println(l);}
if ((mousePressed==false)&&(l==1)){noLoop(); l=0;}
}

PhiLho

Re: How to use println to write " or (
Reply #6 - Feb 26^th, 2009, 11:59am

Ton anglais est très bon...

I still think the approach is wrong. If you want to create a bunch of random stuff and use it consistently in the draw() routine, you just have to save it (in memory) in setup phase:
Code:

int r = 100;
float t1, t2;
PFont font;
int l=0;

int JO_NB = 100;
// I would use a PVector here instead, not important
float[] x = new float[JO_NB];
float[] y = new float[JO_NB];
float[] z = new float[JO_NB];
 
void setup()  
{
  size(500,500,P3D);
  background(200);
  stroke(0);
  // Changed to avoid creating a font...
  font = createFont("Verdana", 18);
  textFont(font);

  for (int i = 0; i < JO_NB; i++)
  {
     x[i] = random(-50,50);
     y[i] = random(-50,50);
     z[i] = random(-50,50);
  }   
}
 
void draw()
{
  lights();
  background(200);  
 
  for (int i = 0; i < JO_NB; i++)
  {
    text("jo", x[i], y[i], z[i]);
    line(0, 0, 0, x[i], y[i], z[i]);
  }

  t1=mouseX-250;
  // Etc., same code
}

If you really need persistence across runs, I can show how to use CSV.

petitjosdu91 YaBB Newbies Offline Posts: 7	Re: How to use println to write " or ( Reply #7 - Feb 26^th, 2009, 12:11pm Oh, that's very cool, it's a great idea, thanks. I enjoy this approach to save each variable x[i] (and beacause I'm learning, I found it beautiful). Thank you very much. Ptijo

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