Sha256: f51554ef011c3056098fa7ca265cac12692eaee65182bf23189d3fbe8e29fd82
Contents?: true
Size: 943 Bytes
Versions: 10
Compression:
Stored size: 943 Bytes
Contents
#
# Extrusion.
#
# Converts a flat image into spatial data points and rotates the points
# around the center.
#
attr_reader :a, :values, :angle
def setup
size(640, 360, P3D)
@angle = 0
@values = []
no_fill
# Load the image into a new array
# Extract the values and store in an array
@a = load_image("ystone08.jpg")
a.load_pixels
(0 ... a.height).each do |i|
row = []
(0 ... a.width).each do |j|
pix = a.pixels[i*a.width + j]
row << blue(pix).to_i
end
values << row
end
end
def draw
background(0)
translate(width/2, height/2, -height/2)
scale(2.0)
# Update and constrain the angle
@angle += 0.005
rotate_y(angle)
# Display the image mass
(0 ... a.height).step(4) do |i|
(0 ... a.width).step(4) do |j|
stroke(values[j][i], 255)
line(j - a.width/2, i - a.height/2, -values[j][i], j - a.width/2, i - a.height/2, -values[j][i] - 10)
end
end
end
Version data entries
10 entries across 10 versions & 1 rubygems