Re : Saving high resolution frames from serial input

I don't have a serial device, so I make a keyPressed() trigger instead of a serial event.
I fixed some errors, and have a decent behavior. Perhaps you want a different one, but the base is here.

1. import processing.pdf.*;
2.  
3. int channels = 10;
4. int [] channel = new int[channels];
5. int packetCount = 0;
6.  
7. float x;
8.  
9. PGraphicsPDF pdf;
10.  
11. //float easing=1;
12. //int last;
13. //int millis();
14. String[] incomingValues;
15.  
16. void setup() {
17.   size(1000, 1000);
18.  
19.   smooth();
20.   noFill();
21.   stroke(160);
22.   frameRate(24);
23.   pdf = (PGraphicsPDF) beginRecord(PDF, "H:/Temp/Lines.pdf");
24. //  beginRecord(pdf); // Redundant!
25. }
26.  
27. void draw() {
28.   if (incomingValues != null && incomingValues.length>1)
29.   {
30.     background(255);
31.     stroke(0);
32. //    strokeWeight(5);
33.     int amplitude = 100 - int(incomingValues[1].trim());
34.     float y = 0;
35.     float prevY = 0;
36.  
37.     for (int i = 1; i < width; i++)
38.     {       
39.       y = sin(radians(i*2))*amplitude;
40.       line(i-1, prevY+height/2, i, y+height/2);      
41.       prevY = y;
42.     }
43.     incomingValues = null; // Don't reuse the array on next frame!
44.     pdf.nextPage(); // Next page only if something has been drawn
45.   }
46. }
47.  
48. void keyPressed() {
49.   incomingValues = new String[] { "1", "" + int(random(5, 100)) };
50.  
51.   if (incomingValues.length>1) {
52.     packetCount++;
53.     println(incomingValues[1]);
54.   }
55. }
56.  
57. void mousePressed() {
58.   endRecord();
59.   exit();
60. }