How to export as a PDF?

NatashaP

I've created a styled map using tilemill and unfolding maps and now want to export/save it as a pdf. Here's the code I've tried, however the pdf is saving as blank. Can someone help me as to where I am going wrong?

import de.fhpotsdam.unfolding.*;
import de.fhpotsdam.unfolding.core.*;
import de.fhpotsdam.unfolding.data.*;
import de.fhpotsdam.unfolding.events.*;
import de.fhpotsdam.unfolding.geo.*;
import de.fhpotsdam.unfolding.interactions.*;
import de.fhpotsdam.unfolding.mapdisplay.*;
import de.fhpotsdam.unfolding.mapdisplay.shaders.*;
import de.fhpotsdam.unfolding.marker.*;
import de.fhpotsdam.unfolding.providers.*;
import de.fhpotsdam.unfolding.texture.*;
import de.fhpotsdam.unfolding.tiles.*;
import de.fhpotsdam.unfolding.ui.*;
import de.fhpotsdam.unfolding.utils.*;
import de.fhpotsdam.utils.*;
import processing.pdf.*;

UnfoldingMap currentmap;


String[] paths;

void setup() {
 size(500,500,PDF, "filename.pdf");


  processData();

  MapUtils.createDefaultEventDispatcher(this, currentmap);
currentmap.zoomAndPanTo(891f, 234f,7);

}

void processData() {
  String mbTilesString = sketchPath("data/small.mbtiles");
  currentmap = new UnfoldingMap(this, new MBTilesMapProvider(mbTilesString));
}



void draw() {
  currentmap.draw();
  // Exit the program 
  println("Finished.");
  exit();
}

koogs

pdf writer might not be aware of unfolding's output.

in my experience it's great at lines and shapes, things you'd expect to be in a vector-based file format, not so much pixels or lighting effects.

Lord_of_the_Galaxy

AFAIK, PDF is only useful if you're using vector graphics, and in your case a normal image file should be enough.

Perhaps you could save an image first and convert it to a PDF.

NatashaP

Ah ok thanks both! How do I save it as an image instead?

Lord_of_the_Galaxy

Thats easy enough. Use the default renderer (size(500, 500)) an inside draw, after calling currentmap.draw() use save(filename). See reference - https://processing.org/reference/save_.html

NatashaP

Thank you!

NatashaP

Sorry I have another question, I hope you don't mind...I'm fairly new to proccessing. I'm fine with saving an image now, but am trying to save it as a high res image. I want to scale it up to an A2 or A1 sheet and it's not a high enough quality at the moment.

Here's the code I've tried ... the normal image is coming out fine, but the high res is coming out blank. I don't know what I am doing wrong :(

  import de.fhpotsdam.unfolding.*;
  import de.fhpotsdam.unfolding.core.*;
  import de.fhpotsdam.unfolding.data.*;
  import de.fhpotsdam.unfolding.events.*;
  import de.fhpotsdam.unfolding.geo.*;
  import de.fhpotsdam.unfolding.interactions.*;
  import de.fhpotsdam.unfolding.mapdisplay.*;
  import de.fhpotsdam.unfolding.mapdisplay.shaders.*;
  import de.fhpotsdam.unfolding.marker.*;
  import de.fhpotsdam.unfolding.providers.*;
  import de.fhpotsdam.unfolding.texture.*;
  import de.fhpotsdam.unfolding.tiles.*;
  import de.fhpotsdam.unfolding.ui.*;
  import de.fhpotsdam.unfolding.utils.*;
  import de.fhpotsdam.utils.*;
  import processing.pdf.*;

  UnfoldingMap currentmap;

  String[] paths;

  void setup() {
   fullScreen();
 processData();

 MapUtils.createDefaultEventDispatcher(this, currentmap);
 currentmap.zoomAndPanTo(891f, 234f, 7);
  }

  void processData() {
    String mbTilesString = sketchPath("data/small.mbtiles");
    currentmap = new UnfoldingMap(this, new MBTilesMapProvider(mbTilesString));
  }


  void draw() {
   smooth(4);
 currentmap.draw();
 //save("filename.png"); 

  }
  void keyPressed() {  

 if (key == 's') {
   save("normal.png");
   saveHiRes(5);
   exit();
 }
  }  

  void saveHiRes(int scaleFactor) {
    PGraphics hires = createGraphics(width*scaleFactor, height*scaleFactor, JAVA2D);
    beginRecord(hires);
    hires.scale(scaleFactor);
    draw();
    endRecord();
    hires.save("hires.png");
  }

kfrajer

Your draw() in line 55 refers to the main draw?

To save your scaled PGraphics, you need to draw on it. also use resize(): https://processing.org/reference/PImage_resize_.html

This next is untested code and I am only referring to the relevant functions:

Kf

PImage img;   //Global access

 void draw() {
  smooth(4);
  currentmap.draw();
  img=get();   //Stores current canvas into iamg object

 }

 void saveHiRes(int scaleFactor) {
   PGraphics hires = createGraphics(width*scaleFactor, height*scaleFactor, JAVA2D);
   beginRecord(hires);
   hires.image(img.resize(img.width*5,0),0,0);
   endRecord();
   hires.save("hires.png");
 }