Sha256: 9c2a72b4312e2907a753fb4d87b3f83e023afc5232c0c52badba2aa59f9ad2dc
Contents?: true
Size: 987 Bytes
Versions: 6
Compression:
Stored size: 987 Bytes
Contents
#
# Pixel Array.
#
# Click and drag the mouse up and down to control the signal and
# press and hold any key to see the current pixel being read.
# This program sequentially reads the color of every pixel of an image
# and displays this color to fill the window.
#
attr_reader :signal, :img, :direction
def setup
size(640, 360)
no_fill
stroke(255)
frame_rate(30)
@img = load_image('sea.jpg')
@direction = 1
@signal = 0
end
def draw
if (signal > img.width * img.height - 1 || signal < 0)
@direction = direction * -1
end
if (mousePressed)
mx = constrain(mouse_x, 0, img.width-1)
my = constrain(mouse_y, 0, img.height-1)
@signal = my * img.width + mx
else
@signal += 0.33 * direction
end
sx = signal.to_i % img.width
sy = signal.to_i / img.width
if (keyPressed)
set(0, 0, img) # fast way to draw an image
point(sx, sy)
rect(sx - 5, sy - 5, 10, 10)
else
c = img.get(sx, sy)
background(c)
end
end
Version data entries
6 entries across 6 versions & 1 rubygems