Created
August 1, 2017 22:47
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| class FieldVector { | |
| PVector location; | |
| PVector grid_location; | |
| PVector heading; | |
| FieldVector(PVector loc, PVector grid_loc) { | |
| this(loc, grid_loc, PVector.random2D()); | |
| } | |
| FieldVector(PVector loc, PVector grid_loc, PVector heading) { | |
| this.location = loc; | |
| this.grid_location = grid_loc; | |
| this.heading = heading.setMag(1); | |
| this.heading.add(PVector.fromAngle(random(-5,5))); | |
| heading.setMag(1); | |
| } | |
| void display() { | |
| stroke(33); | |
| PVector location2 = location.copy().add(heading); | |
| line(location.x, location.y, location2.x, location2.y); | |
| } | |
| void update() { | |
| if(random(1000)>990){ | |
| // this.heading.add(PVector.fromAngle(random(-2,2))); | |
| heading.setMag(1); | |
| } | |
| } | |
| } |
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| class FlowPoint{ | |
| int id; | |
| PVector location; | |
| PVector velocity; | |
| int frames; | |
| color hue; | |
| FlowPoint(){ | |
| this.location = new PVector(random(width),random(height)); | |
| this.velocity = new PVector(); | |
| this.hue = colors[floor(random(0,150))%colors.length]; | |
| this.id = start_id++; | |
| this.frames = floor(random(6*frameRate)); | |
| } | |
| void display(){ | |
| //fill(mona.get(floor(location.x),floor(location.y))); | |
| // noStroke(); | |
| //ellipse(location.x,location.y,1,1); | |
| } | |
| void update(){ | |
| this.velocity.limit(1); | |
| int i = max(0,min(floor(location.x / scale),(width/scale)-1)); | |
| int j = max(0,min(floor(location.y / scale),(height/scale)-1)); | |
| this.velocity.add(field[i][j].heading); | |
| this.location.add(velocity); | |
| if(!isInBounds() || frames++ > 6*frameRate) | |
| reset(); | |
| } | |
| void reset(){ | |
| this.location = new PVector(random(width),random(height)); | |
| this.velocity = new PVector(0,0); | |
| this.hue = colors[floor(random(0,150))%colors.length]; | |
| this.frames = floor(random(6*frameRate)); | |
| } | |
| boolean isInBounds() { | |
| return (this.location.x >= 0 && this.location.x <= width) && (this.location.y >= 0 && this.location.y <= height); | |
| } | |
| ArrayList<FlowPoint> getNearPoints(){ | |
| ArrayList<FlowPoint> tmp = new ArrayList<FlowPoint>(); | |
| for(FlowPoint p : points){ | |
| FlowPoint other = p; | |
| if(other.id != this.id){ // don't draw a line to itself | |
| if(dist(other.location.x,other.location.y,this.location.x,this.location.y) < distTol_2 && this.id > other.id){ | |
| tmp.add(other); | |
| } | |
| } | |
| } | |
| return tmp; | |
| } | |
| } |
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| FieldVector[][] field; | |
| color[] colors = new color[]{color(228,221,81),color(110,166,213),color(255)}; | |
| ArrayList<FlowPoint> points; | |
| int scale = 10; | |
| float noiseScale = 0.002; | |
| int start_id = 0; | |
| int count = 700; | |
| int distTol_1 = 10; | |
| int distTol_2 = 12; | |
| PImage mona; | |
| void setup(){ | |
| size(1280,720); | |
| frameRate(30); | |
| mona = loadImage("http://wallpaperswide.com/download/the_starry_night-wallpaper-1280x720.jpg", "jpg"); | |
| mona.loadPixels(); | |
| points = new ArrayList<FlowPoint>(); | |
| for(int i = 0; i < count; i++) | |
| points.add(new FlowPoint()); | |
| setupField(); | |
| background(15,15,15); | |
| } | |
| void draw(){ | |
| stroke(255); | |
| fill(255); | |
| update(); | |
| if(millis() % 10000 == 0) | |
| setupField(); | |
| } | |
| void update(){ | |
| for(FlowPoint p : points){ | |
| p.update(); | |
| ArrayList<FlowPoint> otherPoints = p.getNearPoints(); | |
| if(otherPoints.size() > 0) | |
| for(FlowPoint other : otherPoints){ | |
| float currDist = dist(other.location.x,other.location.y,p.location.x,p.location.y); | |
| if(currDist<=distTol_1){ | |
| stroke(lerpColor(mona.get(floor(other.location.x),floor(other.location.y)),mona.get(floor(p.location.x),floor(p.location.y)),map(currDist,0,distTol_1,0,1))); // change color based on how close it is to other point | |
| }else{ | |
| stroke(lerpColor(mona.get(floor(p.location.x),floor(p.location.y)),mona.get(floor(other.location.x),floor(other.location.y)),map(currDist,distTol_1,distTol_2,0,1))); // fade color to bg as it gets further away | |
| } | |
| line(other.location.x,other.location.y, p.location.x,p.location.y); | |
| } | |
| } | |
| } | |
| void setupField(){ | |
| println("reset"); | |
| noiseSeed((long)random(1002010010)); | |
| //background(15); | |
| field = new FieldVector[width/scale][height/scale]; | |
| for(int i = 0; i < width/scale; i++){ | |
| for(int j = 0; j < height/scale; j++){ | |
| float noi = noise(i*noiseScale, j*noiseScale)*360; | |
| field[i][j] = new FieldVector(new PVector(i*scale,j*scale),new PVector(i,j),PVector.fromAngle(noi)); | |
| } | |
| } | |
| } | |
| void mousePressed(){ | |
| setupField(); | |
| } |
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