Contents

#
# Regular Polygon
# 
# What is your favorite? Pentagon? Hexagon? Heptagon? 
# No? What about the icosagon? The polygon function 
# created for this example is capable of drawing any 
# regular polygon. Try placing different numbers into the 
# polygon function calls within draw to explore. 
#

def setup
  size(640, 360)
end

def draw
  background(102)
  
  push_matrix
  translate(width*0.2, height*0.5)
  rotate(frame_count / 200.0)
  polygon(0, 0, 82, 3); 
  pop_matrix
  
  push_matrix
  translate(width*0.5, height*0.5)
  rotate(frame_count / 50.0)
  polygon(0, 0, 80, 20); 
  pop_matrix
  
  push_matrix
  translate(width*0.8, height*0.5)
  rotate(frame_count / -100.0)
  polygon(0, 0, 70, 7); 
  pop_matrix
end

def polygon(x, y, radius, npoints)
  angle = TWO_PI / npoints
  begin_shape
  (0 .. TWO_PI).step(angle) do |a|
    sx = x + cos(a) * radius
    sy = y + sin(a) * radius
    vertex(sx, sy)
  end
  end_shape(CLOSE)
end

Version data entries

4 entries across 4 versions & 1 rubygems

Version	Path
ruby-processing-2.4.4	samples/processing_app/basics/form/regular_polygon.rb
ruby-processing-2.4.3	samples/processing_app/basics/form/regular_polygon.rb
ruby-processing-2.4.2	samples/processing_app/basics/form/regular_polygon.rb
ruby-processing-2.4.1	samples/processing_app/basics/form/regular_polygon.rb