Download or view JoyDivisionAnimated.frink in plain text format
/* Make a graphic like the iconic cover of Joy Division's Unknown Pleasures
album.
Did you know that these images came from recordings of radio emissions from
pulsars? That's why they're so interesting and clean.
See:
http://blogs.scientificamerican.com/sa-visual/2015/02/18/pop-culture-pulsar-origin-story-of-joy-divisions-unknown-pleasures-album-cover-video/
*/
class JoyDivision
{
var g is graphics = new graphics
var row = 0
var rowSpacing = 1.25
var rowWidth = 50
var rowHeight = 10
var bgcolor = new color[0,0,0]
var fgcolor = new color[1,1,1]
new[] :=
{
g.backgroundColor[bgcolor]
g.color[fgcolor]
g.stroke[.3]
}
/** Add a line of points to the bottom of the image. Each point should be
between 0 and 1. */
addLine[points] :=
{
filled = new filledPolygon
filled.addPoint[0,row]
trace = new polyline
size = length[points]
xstep = rowWidth / size
x = 0
for point = points
{
y = row - point * rowHeight
filled.addPoint[x, y]
trace.addPoint[x, y]
x = x + xstep
}
filled.addPoint[x, row]
g.color[bgcolor]
g.add[filled]
g.color[fgcolor]
g.add[trace]
row = row + rowSpacing
}
}
win = new graphics.show[]
anim = new Animation[1/10 s]
frames = 80
var lines = new array
for row = 1 to frames
{
line = new array
lasty = 0
for x = -20 to 25
{
y = .2 * -(abs[x]-20)/20
line.push[abs[randomGaussian[0,(y+ 3 lasty)/4]]]
lasty = (y+ 3 lasty)/4
}
lines.push[line]
}
for frame = 0 to frames-1
{
jd = new JoyDivision
for row = 0 to frames-1
jd.addLine[lines@((row+frame) mod frames)]
// Set top border so baselines stay the same.
gr = jd.g
gr.color[0,0,0,0]
gr.line[0,-6,1,-6]
gr.line[0,105,1,105]
win.replaceGraphics[gr]
anim.add[gr]
}
anim.write["JoyDivision.gif", 400, 800]
//browse["JoyDivision.gif"]
Download or view JoyDivisionAnimated.frink in plain text format
This is a program written in the programming language Frink.
For more information, view the Frink
Documentation or see More Sample Frink Programs.
Alan Eliasen was born 20217 days, 23 hours, 31 minutes ago.