Sha256: 7c94754f2078834010db1365d7ccfb4152b92e0cb4366da3f270934352fb8201
Contents?: true
Size: 910 Bytes
Versions: 5
Compression:
Stored size: 910 Bytes
Contents
#
# Linear Image.
#
# Click and drag mouse up and down to control the signal.
#
# Note in ruby-processing to access booleans use
# mouse_pressed? and key_pressed?
#
# Press and hold any key to view the image scanning.
#
attr_reader :signal, :img, :direction
def setup
size(640, 360)
stroke(255)
@img = loadImage('sea.jpg')
@direction = 1
@signal = 0
img.load_pixels
load_pixels
end
def draw
if (signal > img.height - 1 || signal < 0)
@direction = direction * -1
end
if mouse_pressed?
@signal = (mouse_y % img.height).abs
else
@signal += (0.3*direction)
end
if key_pressed?
set(0, 0, img)
line(0, signal, img.width, signal)
else
signal_offset = signal.to_i * img.width
(0 ... img.height).each do |y|
java.lang.System::arraycopy(img.pixels.to_java, signal_offset, pixels, y*width, img.width)
end
update_pixels
end
end
Version data entries
5 entries across 5 versions & 1 rubygems