How to export a PDF from a part of the screen only ?

AdrienColrat

I'm working on automatic books generated with processing, and for one of these books I need to export the left of my screen to one PDF page, and the right to the next page and so on. This is a static and simplified version of my sketch:

import processing.pdf.*;
PGraphicsPDF pdf;

void setup() {
  size(1218,870);
  pdf = (PGraphicsPDF)beginRecord(PDF, "test.pdf");
  PImage img = loadImage("test.jpg");
  image(img, 0,0);
  pdf.nextPage();
  get(595,0,623,870).save("left.jpg");
  get(0,0,623,870).save("right.jpg");
  endRecord();
}

Obviously, this doesn't work at all. I get how I can separate the screen in two — with get() —, but is there any way to make that work with the pdf nextPage() function ? And is there any way at all to export a pdf that's not the size of your sketch? Thanks !

Eeyorelife

This kind of works, but not the way you want it to. You can only record one half of the screen.

import processing.pdf.*;

void setup(){
  size(400,400, P2D);
  beginRaw(PDF,"raw.pdf",200,height);
}
void draw() {
  line(pmouseX, pmouseY,  mouseX,mouseY);
}
void keyPressed(){
  if (key == ' '){
    endRaw();
    exit();
  }
}

 PGraphics beginRaw(String renderer, String filename, int x, int y) {
    filename = insertFrame(filename);
    PGraphics rec = createGraphics(x, y, renderer, filename);
    g.beginRaw(rec);
    return rec;
  }

AdrienColrat

Thank you Eeyorelife I didn't think of that. But I don't get how you can generate multiple pages with the beginRaw function.

Eeyorelife

I don't think you can. I went to the source code of processing and found the raw function zero edited it a bit so you could change the few parameters that createGraphics took.

If you go to processing ->libraries-> PDF and then click the link to the source code of the library you might be able to find a function you can recreate.

AdrienColrat

I really don't know how to do that. What I did was record all the pages to different jpg files in a directory. Is there a way I can access these file and organize them in the right order in a pdf file, at the end of my sketch ?

AdrienColrat

I finally got it, with a resize at the end of my sketch, to reorganize all the pages in the right order :

void keyPressed() { 
  if (key == 'q') {

    background(255);
    surface.setResizable(true);
    surface.setSize(624, 870);
    background(255);
    pdf = (PGraphicsPDF)beginRecord(PDF, htag+dateA+".pdf");
    for (int i = 1; i <= (pagecount); i++) {
      PImage recap = loadImage("data/"+htag+dateA+"/"+i+".png");
      image(recap, 0, 0, 624, 870);
      if (i != pagecount) {
        pdf.nextPage();
      }
    }
    endRecord();
    exit();
  }
}

Thank you for your response Eeyorelife !