Saving high resolution frames from serial input

Core Library Questions

n.a.t.a.s..

Saving high resolution frames from serial input

in Core Library Questions • 5 months ago

Hello,

I have a little doubt and tried a lot of permutation combination but couldnt arrive at what i want. I basically want all my frames to be recorded in a high resolution pdf for printing.

Following is my code:

[code]

import processing.serial.*;
Serial myPort;
int channels = 10;
int [] channel = new int[channels];
int packetCount = 0;
float x;
//float easing=1;
//int last;
//int millis();
void setup() {
size(1000, 1000);
println(Serial.list());
String portName= Serial.list() [0];
myPort= new Serial(this, portName, 9600);
myPort.bufferUntil(10);
smooth();
noFill();
stroke(160);
frameRate(24);
}
void draw() {
}
void serialEvent (Serial myPort) {
background(0);
String[] incomingValues = split(myPort.readString(), ',');
if (incomingValues.length>1) {
packetCount++;
println(incomingValues[1]);
if (incomingValues.length>1)
{
stroke(255);
int amplitude1 = 100-Integer.parseInt(incomingValues[1].trim());
float y = 0;
float prevY = 0;
for (int i = 1; i < width; i++)
{
y = sin(radians(i*2))*amplitude1;
line(i-1, prevY+height/2, i, y+height/2);
prevY = y;
x+=0.2;
}
}
}
}

[/code]

I dont want only one frame to be recorded but multiple of them, where should i put the command?

Thank you for your help.

Replies(5)

PhiLho

Re: Saving high resolution frames from serial input

5 months ago

I suppose you have read http://processing.org/reference/libraries/pdf/index.html
It explains how to skip to a new page.

n.a.t.a.s..

Re: Re: Saving high resolution frames from serial input

5 months ago

Hello,

Thanks for the reply.

I did try, but there seems to be an error in the pdf file, it doesnt open.

I tried putting the code in a way you told me earlier, but i am still facing the following problems:

1. The visual is updating per second as opposed to a smooth transition, which is making it blink. (Should i use millis() and if yes, how? )

2. The pdf doesnt seem to open when i try to record many pages

Here`s the code

import processing.serial.*;
import processing.pdf.*;
Serial myPort;
int channels = 10;
int [] channel = new int[channels];
int packetCount = 0;
float x;
PGraphicsPDF pdf;
//float easing=1;
//int last;
//int millis();
String[] incomingValues;
void setup() {
size(1000, 1000);
println(Serial.list());
String portName= Serial.list() [0];
myPort= new Serial(this, portName, 9600);
myPort.bufferUntil(10);
smooth();
noFill();
stroke(160);
frameRate(24);
pdf = (PGraphicsPDF)beginRecord(PDF, "Lines.pdf");
beginRecord(pdf);
}
void draw() {
background(0);
if (incomingValues != null && incomingValues.length>1)
{
stroke(255);
int amplitude = 100 - int(incomingValues[1].trim());
float y = 0;
float prevY = 0;
for (int i = 1; i < width; i++)
{ y = sin(radians(i*2))*amplitude;
line(i-1, prevY+height/2, i, y+height/2);
prevY = y;
}
}
pdf.nextPage();
}
void serialEvent (Serial myPort) {
incomingValues = split(myPort.readString(), ',');
if (incomingValues.length>1) {
packetCount++;
println(incomingValues[1]);
}
}
void mousePressed() {
endRecord();
exit();
}

Please help. I am in need of a way out.

Thank you

PhiLho

Re: Saving high resolution frames from serial input

5 months ago

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.

import processing.pdf.*;
int channels = 10;
int [] channel = new int[channels];
int packetCount = 0;
float x;
PGraphicsPDF pdf;
//float easing=1;
//int last;
//int millis();
String[] incomingValues;
void setup() {
size(1000, 1000);
smooth();
noFill();
stroke(160);
frameRate(24);
pdf = (PGraphicsPDF) beginRecord(PDF, "H:/Temp/Lines.pdf");
// beginRecord(pdf); // Redundant!
}
void draw() {
if (incomingValues != null && incomingValues.length>1)
{
background(255);
stroke(0);
// strokeWeight(5);
int amplitude = 100 - int(incomingValues[1].trim());
float y = 0;
float prevY = 0;
for (int i = 1; i < width; i++)
{
y = sin(radians(i*2))*amplitude;
line(i-1, prevY+height/2, i, y+height/2);
prevY = y;
}
incomingValues = null; // Don't reuse the array on next frame!
pdf.nextPage(); // Next page only if something has been drawn
}
}
void keyPressed() {
incomingValues = new String[] { "1", "" + int(random(5, 100)) };
if (incomingValues.length>1) {
packetCount++;
println(incomingValues[1]);
}
}
void mousePressed() {
endRecord();
exit();
}

laluchado..

Re: Saving high resolution frames from serial input

3 months ago

Hello,

i have the same problem, i try to have a complete image with all the frames to be recorded in a high resolution pdf for printing.
For the moment i only have as result the first frame of my project.

I already looked at the processing librarie references, but i still have only the first frame in a pdf.

Thanks for your ansewer

PhiLho

Re: Saving high resolution frames from serial input

3 months ago

Make a new topic (in Core Libraries section), and show your code (or a simplified version reproducing the problem).

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