/* Sonic Youth - Do You Believe In Rapture?
 *
 * Sonic Youth is often descirbed as a "noise" band.
 * Whether or not the label is entirely accurate, Sonic 
 * Youth's music does takes advantage of free-form noise
 * to build and release tension over the course of their
 * songs.
 *
 * My visualization of "Do You Believe In Rapture?" is
 * somewhat literal.  Time progresses horizontally from left
 * to right, the top half of the stage representing the first 
 * half of the song, the bottom being the second.
 * 
 * The song is driven by a few distinct chords play on guitar
 * represented by the jagged vertical lines.  The background
 * switches from black to white to signify a new, more stark
 * chord progression.
 *
 * The line of circles represent the constant pounding of the 
 * bass drum throughout the song. The lines extending from the
 * bottom of each row represnt cymbals gradually gaining volume.
 *
 * The song's climax is preceded by a verse that becomes more
 * and more obscured by dissonance and noise, as represented by
 * static. It briefly switches to the "white" chord progression
 * before releasing a line of very melodic very staccato guitar
 * notes. The song fades out the same way it came in.
 *
 * The visualization attempts to illustrate the way Sonic Youth
 * buries rewarding hooks and melodies within plenty of
 * dissonance and repetition.
 *
 */

size(400,400);
background(0);

smooth();
rectMode(CORNERS);

float songLength = 3+11/60.0; // 3:11
float leftBound;
float rightBound;
int lowerBound = height/2;

// Divide stage
stroke(20);
line(0, height/2, width, height/2);

// Verse 1 - 0:00 - 0:50
leftBound = (0.0/60.0)/(songLength/2)*width;
rightBound = (50.0/60.0)/(songLength/2)*width;

stroke(255);
for (float i=leftBound; i < rightBound; i+=6) { 
 // Guitar strums
 line (i, lowerBound-140, i, lowerBound-100); 
 line (i+3, lowerBound-130, i+3, lowerBound-90); 
 ellipse(i, lowerBound-50, 3, 3);
 // Cymbals increase in volume from silence
 line (i, lowerBound, i, lowerBound-i/10);
}

// Verse 2 - 0:50 - 0:57
leftBound = (50.0/60.0)/(songLength/2)*width;
rightBound = (57.0/60.0)/(songLength/2)*width;
noStroke();
fill(255);
rect(leftBound, 0, rightBound, lowerBound);

// Guitar raises
stroke(0);
fill(0);
for (float i=leftBound; i <= rightBound; i+=6) {
 line (i, lowerBound-160, i, lowerBound-120); 
 line (i+3, lowerBound-150, i+3, lowerBound-110);  
 // Kick drum
 ellipse(i, lowerBound-50, 3, 3);
}

// Verse 3 - 0:57 - width (overlaps)
// Some ambiguous guitar noises and scratches begin to cloud the melody

leftBound = (57.0/60.0)/(songLength/2)*width;
rightBound = width; // Cutoff before stretches into second half

stroke(255);
fill(255);
for (float i=leftBound; i < rightBound; i+=6) {   
 // Guitar strums
 line (i, lowerBound-140, i, lowerBound-100); 
 line (i+3, lowerBound-130, i+3, lowerBound-90); 
 ellipse(i, lowerBound-50, 3, 3);
 // Cymbals increase in volume from silence
 line (i, lowerBound, i, lowerBound-(i-leftBound)/7);
}

// Noise
float j = 0;
for (float i=leftBound; i < rightBound; i+=1) {
  j = (i - leftBound)/2;
 for (int k = 0; k < j; k++) {
   float yPos = random(0, height/2);
   point(i, yPos);
 }
}

// Verse 3 - Moving onto bottom half of stage

lowerBound = height;
leftBound = 0;
rightBound = ((1+41.0/60.0)-(songLength/2))/(songLength/2)*width;

for (float i=leftBound; i < rightBound; i+=6) {   
 // Guitar strums
 line (i, lowerBound-140, i, lowerBound-100); 
 line (i+3, lowerBound-130, i+3, lowerBound-90); 
 ellipse(i, lowerBound-50, 3, 3);
}

// Noise
for (float i=leftBound; i < rightBound; i+=1) {
 float o = (i - leftBound)/2 + j;
 for (int k = 0; k < o; k++) {
   float yPos = random(height/2, lowerBound);
   point(i, yPos);
 }
}

// Verse 4 - 1:41 - 1:50
leftBound = ((1+41.0/60.0)-(songLength/2))/(songLength/2)*width;
rightBound = ((1+50.0/60.0)-(songLength/2))/(songLength/2)*width;
noStroke();
fill(255);
rect(leftBound, height/2, rightBound, lowerBound);

// Guitar raises
stroke(0);
fill(0);
for (float i=leftBound; i <= rightBound; i+=6) {
 line (i, lowerBound-160, i, lowerBound-120); 
 line (i+3, lowerBound-150, i+3, lowerBound-110); 
 // Kick drum
 ellipse(i, lowerBound-50, 3, 3);
}

// Verse 5 - 1:50 - 2:08
// Melodic
leftBound = ((1+50.0/60.0)-(songLength/2))/(songLength/2)*width;
rightBound = ((2+8.0/60.0)-(songLength/2))/(songLength/2)*width;
for (float i=leftBound; i <= rightBound; i+=6) {
 stroke(255);
 line (i, lowerBound-140, i, lowerBound-100); 
 line (i+3, lowerBound-140, i+3, lowerBound-100); 
 // Guitar melody
 noStroke();
 fill(255, 50);
 for (float g=0; g<6; g+=0.5) {
   float diameter = random(2,6);
   float yPos = random(height/2, lowerBound);
   ellipse(i+g, yPos, diameter, diameter);
 }
 // Kick drum
 fill(255);
 if ((i-leftBound)%12 == 0) {
   ellipse(i, lowerBound-50, 3, 3);
 }
}

// Verse 6 - 2:08 - 2:17
leftBound = ((2+8.0/60.0)-(songLength/2))/(songLength/2)*width;
rightBound = ((2+17.0/60.0)-(songLength/2))/(songLength/2)*width;
noStroke();
fill(255);
rect(leftBound, height/2, rightBound, lowerBound);

// Guitar raises
stroke(0);
fill(0);
for (float i=leftBound; i <= rightBound; i+=6) {
 line (i, lowerBound-160, i, lowerBound-120); 
 line (i+3, lowerBound-150, i+3, lowerBound-110); 
 // Kick drum
 ellipse(i, lowerBound-50, 3, 3);
}

// Verse 7 - 2:17 - 2:51
leftBound = ((2+17.0/60.0)-(songLength/2))/(songLength/2)*width;
rightBound = ((2+51.0/60.0)-(songLength/2))/(songLength/2)*width;

stroke(255);
fill(255);
for (float i=leftBound; i < rightBound; i+=6) {   
 // Guitar strums
 line (i, lowerBound-140, i, lowerBound-100); 
 line (i+3, lowerBound-130, i+3, lowerBound-90); 
 ellipse(i, lowerBound-50, 3, 3);
 // Cymbals increase in volume from silence
 line (i, lowerBound, i, lowerBound-(i-leftBound)/7);
}

// Last Verse - 2:51 - 3:00
leftBound = ((2+51.0/60.0)-(songLength/2))/(songLength/2)*width;
rightBound = ((3.0)-(songLength/2))/(songLength/2)*width;
print(leftBound + " " + rightBound);
noStroke();
fill(255);
rect(leftBound, height/2, rightBound, lowerBound);

// Guitar raises
stroke(0);
fill(0);
for (float i=leftBound; i <= rightBound; i+=6) {
 line (i, lowerBound-160, i, lowerBound-120); 
 line (i+3, lowerBound-150, i+3, lowerBound-110); 
 // Kick drum
 ellipse(i, lowerBound-50, 3, 3);
}