stuff

Author: monkstone

contributed/superformula.rb

@@ -0,0 +1,72 @@
+# Visualize: Superformula
+# from Form+Code in Design, Art, and Architecture
+# by Casey Reas, Chandler McWilliams, and LUST
+# Princeton Architectural Press, 2010
+# ISBN 9781568989372
+#
+# Get Processing at http://www.processing.org/download
+
+attr_reader :scaler, :m, :n1, :n2, :n3
+
+def settings
+  size(700, 700)
+  smooth(4)
+end
+
+def setup
+  sketch_title('Superformula')
+  no_fill
+  stroke(255)
+  @scaler = 200.0
+  @m = 2
+  @n1 = 18.0
+  @n2 = 1.0
+  @n3 = 1.0
+end
+
+def draw
+  background(0)
+  push_matrix
+  translate(width / 2, height / 2)
+  newscaler = scaler
+  16.downto(0) do |s|
+    begin_shape
+    mm = m + s
+    nn1 = n1 + s
+    nn2 = n2 + s
+    nn3 = n3 + s
+    newscaler *= 0.98
+    sscaler = newscaler
+    points = superformula(mm, nn1, nn2, nn3)
+    curve_vertex(
+      points[points.length - 1].x * sscaler,
+      points[points.length - 1].y * sscaler
+    )
+    (0...points.length).each do |i|
+      curve_vertex(points[i].x * sscaler, points[i].y * sscaler)
+    end
+    curve_vertex(points[0].x * sscaler, points[0].y * sscaler)
+    end_shape
+  end
+  pop_matrix
+end
+
+def superformula(m, n1, n2, n3)
+  num_points = 360
+  phi = TWO_PI / num_points
+  (0..num_points).map { |i| superformula_point(m, n1, n2, n3, phi * i) }
+end
+
+def superformula_point(m, n1, n2, n3, phi)
+  t1 = cos(m * phi / 4)
+  t1 = t1.abs
+  t1 **= n2
+  t2 = sin(m * phi / 4)
+  t2 = t2.abs
+  t2 **= n3
+  r = (t1 + t2)**(1 / n1)
+  return Vec2D.new if r.abs.zero?
+  x = cos(phi) / r
+  y = sin(phi) / r
+  Vec2D.new(x, y)
+end

processing_app/library/video/capture/mirror.rb

@@ -16,7 +16,7 @@
 
 def setup
   sketch_title 'Mirror'
-  frameRate(30)
+  frame_rate(30)
   color_mode(RGB, 255, 255, 255, 100)
   @video = Capture.new(self, width, height)
   # Start capturing the images from the camera
@@ -60,4 +60,3 @@ def draw
 def settings
   size(960, 544, P2D)
 end
-