SampleDot.pde
class SampleDot {
float amount;
float angle;
float start_from_center = 10;
int num_dots = 35;
float divider = 8;
float radius = 4;
SampleDot(float amount_) {
amount = amount_;
angle = 0;
}
void update(float angleStep) {
angle += angleStep;
}
void render() {
pushMatrix();
pushStyle();
translate((width / 2), (height / 2));
noStroke();
float mapped_i = (map(amount, 0, 1, 0, num_dots) * 2);
for(int i = 0; i < num_dots; i++) {
float raw_radius = (start_from_center + (divider * i));
float x = (cos(radians(-90 + angle)) * raw_radius);
float y = (sin(radians(-90 + angle)) * raw_radius);
if(i <= mapped_i) {
color col = lerpColor(col_start, col_end, map(i, 0, num_dots, 0, 1));
if(angle > 270) {
float opacity = map(angle, 270, 359, 255, 0);
fill(red(col), green(col), blue(col), opacity);
} else {
fill(col);
}
ellipseMode(CENTER);
ellipse(x, y, radius, radius);
}
}
popStyle();
popMatrix();
}
boolean isDone() {
return (angle >= 360);
}
}
sound_circle.pde
import processing.sound.*;
float angle_step = 1;
int frames_per_sample = 3;
color col_start = color(21, 107, 193);
color col_end = color(6, 229, 78);
SoundFile sample;
Amplitude amp;
ArrayList<SampleDot> sample_dots;
FloatList pending_amplitudes;
void setup() {
size(640, 640);
//device = new AudioDevice(this, 44000, bands);
sample = new SoundFile(this, "alpines-chances-cyril-hahn-remix-mono.mp3");
//sample = new SoundFile(this, "cyril-hahn-say-my-name-mono.mp3");
sample.loop();
//song = new SoundFile(this, "alpines-chances-cyril-hahn-remix.mp3");
//song.loop();
//fft = new FFT(this, bands);
//fft.input(sample);
amp = new Amplitude(this);
amp.input(sample);
pending_amplitudes = new FloatList();
sample_dots = new ArrayList<SampleDot>();
}
void draw() {
background(30);
// fft.analyze(spectrum);
// for(int i = 0; i < bands; i++) {
// line((width/2)+i, height, (width/2)+i, height - spectrum[i] * height);
// }
pending_amplitudes.append(amp.analyze());
if((frameCount % frames_per_sample) == 0) {
int num_amps = pending_amplitudes.size();
float total_amps = 0.0;
for(float amp_i : pending_amplitudes) {
total_amps += amp_i;
}
pending_amplitudes.clear();
sample_dots.add(new SampleDot( (total_amps / num_amps) ));
//sample_dots.add(new SampleDot(amp.analyze()));
}
for(SampleDot dot : sample_dots) {
dot.render();
dot.update(angle_step);
}
for(int i = sample_dots.size() - 1; i >= 0; i--) {
SampleDot dot = sample_dots.get(i);
if(dot.isDone()) {
sample_dots.remove(i);
}
}
if(frameCount == 400) { save("preview.png"); }
}
