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Versions: 6
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Stored size: 1.22 KB
Contents
# An object that wraps the PShape
class Wiggler
include Processing::Proxy
attr_reader :original, :x, :y, :s, :yoff, :xoff
def initialize width, height
@x = width/2
@y = height/2
@yoff = 0
# The 'original' locations of the vertices make up a circle
@original = []
(0 ... TAU).step(0.2) do |a|
v = PVector.from_angle(a)
v.mult(100)
original << v
end
# Now make the PShape with those vertices
@s = create_shape
s.begin_shape
s.fill(127)
s.stroke(0)
s.stroke_weight(2)
original.each do |v|
s.vertex(v.x, v.y)
end
s.end_shape(CLOSE)
end
def wiggle
@xoff = 0
# Apply an offset to each vertex
(0 ... s.get_vertex_count).each do |i|
# Calculate a new vertex location based on noise around 'original' location
pos = original[i]
a = TAU*noise(xoff,yoff)
r = PVector.from_angle(a)
r.mult(4)
r.add(pos)
# Set the location of each vertex to the new one
s.set_vertex(i, r.x, r.y)
# increment perlin noise x value
@xoff += 0.5
end
# Increment perlin noise y value
@yoff += 0.02
end
def display
push_matrix
translate(x, y)
shape(s)
pop_matrix
end
end
Version data entries
6 entries across 6 versions & 1 rubygems