Generate Tweens from CSV file with Ijeomamotion library

naturfeno..

Generate Tweens from CSV file with Ijeomamotion library

in Contributed Library Questions • 6 months ago

Hello,

I am currenty trying to write a program that draw lines from a center and outwards, where the length, angle (in radians), start time, flight time and finish time (seconds) of all lines are in a CSV file.

The problem I am having is that I can't figure out how to get the Ijeomamotion library (or any other library) to read the file and generate as many tweens as there are entries in the CSV file. And then draw the lines over the course of 24 hours.

Anyone have some ideas of how to do this?

All help is greatly appreciated.

Tegel_a2.csv:

478,3.4732,24376,2024,26400
6402,2.6878,186,27114,27300
1616,0.4014,20456,6844,27300
1109,0.9599,23503,4697,28200
691,5.3756,24673,2927,27600
477,3.4034,24980,2020,27000
511,4.0666,25136,2164,27300
504,4.4506,25165,2135,27300
478,3.4732,25276,2024,27300
525,4.66,25376,2224,27600
523,5.1487,25385,2215,27600
377,4.2586,25403,1597,27000

and so on for a couple of hundred lines.

This is the code without tweens, so you can see the principle of the program:

String[] lines;
int index, last, lastTime;
float angle, distance, takeoff, flighttime, touchdown, sofar, dist;
void setup() {
size(1600, 1000);
background(255);
stroke(0);
smooth();
lines = loadStrings("Tegel_a2.csv");
}
void draw() {
float time = (hour()*60*60)+(minute()*60)+second();
if (index < lines.length) {
// Split the input file by comma
String[] pieces = split(lines[index], ',');
distance = float(pieces[0]);
angle = float(pieces[1]);
takeoff = float(pieces[2]);
flighttime = float(pieces[3]);
touchdown = float(pieces[4]);
if((distance/flighttime)*(time-takeoff) > 0) {
sofar = (distance/flighttime)*(time-takeoff);
} else {
sofar = 0;
}
if (time >= takeoff && time<=touchdown ) {
lineAngle(width/2, height/2, angle, sofar);
println( " Angle in radians: "+angle+" Distance in km: "+distance+" sofar in km: "+sofar);
}
index = index + 1;
}else{
if ( millis() - lastTime > 10000 ) {
index = 0;
background(255);
println("10 sec reset!");
lastTime = millis();
}
} //END IF ELSE
} //END DRAW
void lineAngle(int x, int y, float angle, float length)
{
line(x, y, x+cos(angle)*(length/6), y-sin(angle)*(length/6));
}

Replies(2)

ijeoma

Re: Generate Tweens from CSV file with Ijeomamotion library

5 months ago

Hello @ naturfenomen, sorry for the late reply, I haven't been searching the forums much. Here's a basic example that animates lines from the center at random angles.

import ijeoma.motion.tween.*;
import ijeoma.motion.*;
Tween t;
PVector begin, end, position;
float angle, length;
void setup() {
size(200, 200);
Motion.setup(this);
angle = random(TWO_PI);
length = random(25, 100);
begin = new PVector(width/2, height/2);
end = new PVector(begin.x+cos(angle)*length, begin.y+sin(angle)*length);
position = begin.get();
t = new Tween(100).addVector(position, end).play();
}
void draw() {
background(255);
stroke(0);
fill(0);
line(begin.x, begin.y, position.x, position.y);
ellipse(position.x, position.y, 10, 10);
}
void keyPressed() {
angle = random(TWO_PI);
length = random(width/2);
end = new PVector(begin.x+cos(angle)*length, begin.y+sin(angle)*length);
position = begin.get();
t = new Tween(100).addVector(position, end).play();
}

naturfeno..

Re: Generate Tweens from CSV file with Ijeomamotion library

4 months ago

Thank you @ijeoma!

I will try to use PVectors in my code. This is how it looks now, but it has a bunch of bugs, and seems to get stuck every now and then:

import ijeoma.motion.tween.*;
import ijeoma.motion.*;
FlightLine[] flightLines;
int flightCount;
float angle, distance, takeoff, flighttime, touchdown, sofar, direction, time;
String[] lines;
float scale = 15.5;
void setup() {
println("setup");
// frameRate(1);
time = ((hour()*60*60)+(minute()*60)+second());
size(displayWidth, displayHeight);
// size(1280, 800);
Motion.setup(this);
// flightLines = null;
lines = loadStrings("flightlist.csv");
flightCount = lines.length;
flightLines = new FlightLine[flightCount];
for (int i = 0; i < lines.length; i++) {
String[] pieces = split(lines[i], ',');
distance = float(pieces[0]);
angle = float(pieces[1]);
takeoff = float(pieces[2]);
flighttime = float(pieces[3]);
touchdown = float(pieces[4]);
direction = float(pieces[5]);
FlightLine fl = new FlightLine(width/2, height/2, angle, distance, distance, distance, (takeoff-time), flighttime, direction);
flightLines[i] = fl;
}
}
void draw() {
background(255);
for (FlightLine fl : flightLines)
fl.draw();
// for (int i = 0; i < 23; i++) {
//
// if ( millis()/1000 == 3600*i ) {
// println("hourly reset!");
//
// setup();
// }
// }
if ( ((hour()*60*60)+(minute()*60)+second()) < 2 ) {
println("midnight reset!");
setup();
}
}
void keyPressed() {
if (key==' ') {
setup();
}
}
class FlightLine {
int x, y;
float an, dis, dix, diz, to, ft, dir;
Tween xTween;
FlightLine(int x, int y, float an, float dis, float dix, float diz, float to, float ft, float dir) {
this.x = x;
this.y = y;
this.an = an;
this.dis = 0;
this.dix = dix;
this.diz = diz;
this.to = to;
this.ft = ft;
this.dir = dir;
xTween = new Tween(ft).add(this, "dis", dis).add(this, "diz", 0).delay(to).play();
xTween.setTimeMode(Tween.SECONDS);
}
void draw() {
strokeWeight(2);
strokeCap(SQUARE);
stroke(0);
if (dir == 1) {
if ( xTween.isDelaying()) { } else {
// stroke(255,0,0);
if ( xTween.isPlaying()) { line(x, y, x+cos(an)*(dis/scale), y-sin(an)*(dis/scale));
} else { }
}
} else {
if ( xTween.isDelaying()) { } else {
// stroke(0,0,255);
if ( xTween.isPlaying()) {
line(x+cos(an)*(dix/scale), y-sin(an)*(dix/scale), x+cos(an)*(diz/scale), y-sin(an)*(diz/scale));
} else { }
}
}
}
}