exporting as pdf

blindschl..

in Integration and Hardware • 1 years ago

hi
I have to draw lines with the mouse of the length of 36090 pixels. Then I have to export these pixels into a picture which I can print with a hight enough resolution (at least 200 dpi). processing works with 72 dpi an there is no way to change it - right? Or ist there a way to change the resolution within processing?

The only way I see, is save it as a vector-file. All I found is exporting as pdf. now I always get the message, that the memory in preferences might be to small. It says:
OutOfMemoryError: You may need to increase the memory setting in Preferences

I opend the preferences - there are tree lines with the word memory
run.options.memory=false
run.options.memory.initial=64
run.options.memory.maximum=256

I took the last one and changed it up to 25600
but it did't help at all.

does anybody know, what I can do?
thanks for help!

Replies(13)

PhiLho

Re: exporting as pdf

1 years ago

Not a Processing Implementations at all. This section is the most misunderstood of alls, perhaps because people see the name and doesn't look at the description, I don't know.

Anyway, perhaps the memory issue is in your program, ie. in its design. Without seeing it, it is hard to tell.
And Processing doesn't work at 72 dpi, it works at the DPI of your screen... Can be 72, 96, 120 or something else.

blindschl..

Re: exporting as pdf

1 years ago

hi
my problem is, that I want to export a long drawing, which I can print out in a good resolution. processing works on the screen - that is clear. but when I export it as a picture, then it has the resolution of 72 dpi and that is not good enought for print.

the script is as follows

import processing.pdf.*;

   float totalDistance; //zahlenvariable für distanz in pixeln
   float cmDistance;//zahlenvariable für cm-umrechnung
   float value = 0;

boolean record;

   void setup() {
     size(361, 461);
     beginRecord(PDF, "zeichnung.pdf");
     background(255);
     smooth();
     textSize(9);
     rect(0,100,360,360);//bilderrand resp. zeichenfläche
     line(0,100,740,100);//abgrenzung zu zeichenfläche
   }

   void draw() {
     stroke(0);
     if (mousePressed) {
       line(mouseX, mouseY, pmouseX, pmouseY);
       totalDistance += dist(mouseX, mouseY, pmouseX, pmouseY);
       cmDistance = totalDistance * 0.035277;
       value = totalDistance;
     }

     fill(255);
     rect(16, 5, 72, 72);//referenzquadrat und texthalter
     fill(0, 0, 0);//schriftfarbe
     text(totalDistance, 15, 60);
     text("px", 73, 60);
     text(cmDistance, 15, 73);
     text("cm", 73, 73);

     if ((value > 36090 ) && (value < 36091)) {
       saveFrame("zeichnung_value.png");
     }
   }

void keyReleased() {
if (key == 'q') {
    endRecord();
    exit();
}
}

PhiLho

Re: exporting as pdf

1 years ago

How much time does it take to get this out of memory error? I tested this sketch and got no errors with standard memory.
Have you restarted Processing after changing the settings?

blindschl..

Re: exporting as pdf

1 years ago

it takes not a long time - I have to hurry with drawing and still am not fast enough. If I am fast I get up to 35xxx pixels but never up to 36090 pixels.
yes I did restart processing after changing the settings. I pushed it up to 8865 - but it did't help at all.

is there a possibility, that processing is not registering every single pixel as vector/path? more like illustrator does it. if there is a big change of direction, then illustrator sets a vector. processing seems to set a vector at every single pixel... can I shorten it up somehow?

PhiLho

Re: exporting as pdf

1 years ago

You have a problem with your setting (Processing, Java, system or something).
I draw up to 35,000 pixels without any problem. With the standard settings of Processing.

And no, Processing sets a vector for each line() call, not for each pixel.
There is a side issue: you also record the display of the distance. You should use a variant of the Pausing While Recording (With Screen Display) method to stop recording while drawing this part.

blindschl..

Re: exporting as pdf

1 years ago

wow - super - thank you!!!

your idea to take the pausing while recording works perfect! even my computer can handle it without getting out of memory.

now another question: when I am drawing lines they are somehow cornerd, I mean not smooth. in my script I did set smooth(). but it is still cornerd.

If I do the same drawing in illustrator, there are no corners because (I guess) it uses a bezier-curve-vector (or however it is called). is there a possibility to have something like that also in processing?

PhiLho

Re: exporting as pdf

1 years ago

You can draw bezier(), or perhaps better in this case, curve() instead of line(). Illustrator does some math to interpolate the drawing to such kind of curves, you have to do the math yourself, I fear.
smooth() acts on anti-aliasing, not on curvature...

blindschl..

Re: exporting as pdf

1 years ago

ok curve() - sounds good to me - but - I have problems to understand what happens with curves at all. I would need to integrate the curve() into my script and combine it with the mouse movement - but how???

curve() needs 8 numbers. xmouse, I guess, would be for the first number, ymouse for the second number - what is with the rest of the numbers? is it possible at all to combine curve() with the mouse movement?

and doing math by myself - extremely bad - I am something like a blindworm concerning math

PhiLho

Re: exporting as pdf

1 years ago

Yes, with Processing, you often have to do some maths... The good side is that's math in a visual way.

blindschl..

Re: exporting as pdf

1 years ago

yes I know - but - if I have problems to understand what happens with curves at all, then I have no chance to find out, how I have to combine it with the mouse-moving.

mouseX, mouseY, pmouseX, pmouseY...

can you give me some advise?

blindschl..

Re: exporting as pdf

1 years ago

I have still a problem with the memory. If I draw a complex drawing, which has many angles, I run out of the possible maximum of memory. It makes pdfs of the size of 6 mb - I think, that is really much to big!
Is there an other way to save the drawing in a good enough quality for print ?
thanks for your help

jbum

Re: exporting as pdf

1 years ago

There are tricks you can do to reduce the number of vertices in the path that is being saved/drawn.

1) Only record points when the mouse is actually moving.

2) If there are three points a,b,c and

(c.x - b.x) = (b.x - a.x)

(c.y - b.y) = (b.y - a.y)

You can remove point b.

If you post your current version of the code, there may be other things we can spot.

blindschl..

Re: exporting as pdf

1 years ago

hi
i am drawing with (mouseX, mouseY, pmouseX, pmouseY) does it work with removing points?

another problem is, that i cannot print the pdf anymore, because it generates (if it is not run out of memory) files of over 6 mb!

all i want is, that i can draw and save like in illustrator. so why don't i do it in illustrator at all - because i need the measuring of pixels, cm, date and time connected with my act of drawing.

here is the code

import processing.pdf.*;
   //klasse textfeld erzeugt objekt schreiben
   textfeld schreiben;
   float totalDistance; //zahlenvariable für distanz in pixeln
   float cmDistance;//zahlenvariable für cm-umrechnung
   float sFr;//preis pro cm
   float value = 0;


boolean recording;
PGraphicsPDF pdf;

   void setup() {
     //size(361, 461);
     size(566,397);
     pdf = (PGraphicsPDF) createGraphics(566, 397, PDF, "zeichnung4.pdf");
     background(255);
     //smooth();
    // textSize(9);
     //rect(0,100,360,360);//bilderrand resp. zeichenfläche
     //line(0,100,740,100);//abgrenzung zu zeichenfläche

     //erzeugt neues textfeld mit name schreiben
     schreiben = new textfeld();

   }

   void draw() {
     stroke(0);
     if (mousePressed) {
       line(mouseX, mouseY, pmouseX, pmouseY);
       totalDistance += dist(mouseX, mouseY, pmouseX, pmouseY);
       cmDistance = totalDistance * 0.035277;
       sFr = totalDistance * 0.035277 /100;
       value = totalDistance;
     }

     //ruft funktion texteinfüllen der klasse textfeld auf und schreibt es ins objekt schreiben
     schreiben.texteinfuellen();

     if ((value > 360 ) && (value < 365)) {
       saveFrame("zeichnung_value4.tif");
     }
   }

void keyReleased() {
if (key == 'r') {
    if (recording) {
      endRecord();
      println("Recording stopped.");
      recording = false;
    } else {
      beginRecord(pdf);
      println("Recording started.");
      recording = true;
    }
} else if (key == 'q') {
    if (recording) {
      endRecord();
    }
    exit();
}
}

and a the class textfeld

class textfeld{

   void texteinfuellen() {

     textSize(8);
     noStroke();


    //position nach drehung
    //translate(525, 350);//rechter bildrand mit rotate(PI/-2.0)
    translate(40, 40);
    //drehen um 90 gradr
rotate(PI/2.0);


     //position ohne drehung
// translate(220, 355);

     //distanz in pixel
     fill(255);
     rect(16, 5, 72, 22);//referenzquadrat und texthalter
     fill(0, 0, 0);//schriftfarbe
     text(" px "+totalDistance, 15, 20);
    // text("px|", 73, 20);

     //distanz in cm
     fill(255);
     rect(88, 5, 72, 22);
     fill(0, 0, 0);
     text("cm "+cmDistance, 87, 20);
     //text("cm|", 145, 20);

     //datum
     fill(255);
     rect(160, 5, 52, 22);
     fill(0, 0, 0);
     int d = day();    // Values from 1 - 31
     int m = month(); // Values from 1 - 12
     int y = year();   // 2003, 2004, 2005, etc.
    String s = String.valueOf(d);
    text(s+".", 160, 20);
    s = String.valueOf(m);
    text(s+".", 173, 20);
    s = String.valueOf(y);
    text(s +" |", 186, 20);

     //uhrzeit
     fill(255);
     rect(212, 5, 72, 22);
     fill(0, 0, 0);
     int h = hour();    // Values from 1 - 31
     int mi = minute(); // Values from 1 - 12
     int se = second();   // 2003, 2004, 2005, etc.
    String z = String.valueOf(h);
    text("time "+z+".", 213, 20);
    z = String.valueOf(mi);
    text(z+".", 245, 20);
    z = String.valueOf(se);
    text(z, 258, 20);

     //signatur
     fill(255);
     rect(272, 5, 68, 22);//referenzquadrat und texthalter
     fill(0, 0, 0);//schriftfarbe
     text("| arlette ochsner", 274, 20);


     //nummer
     fill(255);
     //rect(338, 5, 72, 22);//referenzquadrat und texthalter
     rect(160, 25, 120, 35);
     fill(0, 0, 0);//schriftfarbe
     text("Nr. 2 / 1'273'200", 162, 35);

      //distanz in sFr
     fill(255);
     rect(272, 25, 72, 35);
     fill(0, 0, 0);
     text(sFr, 305, 35);
     text("| sFr.", 275, 35);

   }

}

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