voronoi on sphere

Author: monkstone

external_library/java/hemesh/voronoi_on_sphere.rb

@@ -0,0 +1,41 @@
+load_library 'hemesh'
+
+java_import 'wblut.processing.WB_Render3D'
+java_import 'wblut.geom.WB_Point'
+java_import 'wblut.geom.WB_RandomOnSphere'
+include_package 'wblut.hemesh'
+
+attr_reader :mesh, :render, :points
+
+def setup
+  sketch_title 'Voronoi On Sphere'
+  ArcBall.init(self)
+  rs = WB_RandomOnSphere.new
+  creator = HEC_ConvexHull.new
+  num = 500
+  @points = (0...num).map { rs.next_point.mul_self(400.0) }
+  creator.set_points(points)
+  creator.set_n(num)
+  imesh = HE_Mesh.new(creator)
+  @mesh = HE_Mesh.new(HEC_Dual.new(imesh).set_fix_non_planar_faces(false))
+  ext = HEM_Extrude.new.set_distance(0).set_chamfer(5).set_relative(false)
+  mesh.modify(ext)
+  mesh.get_selection('extruded').modify(HEM_Extrude.new.set_distance(-20))
+  @render = WB_Render3D.new(self)
+end
+
+def draw
+  background(55)
+  directional_light(255, 255, 255, 1, 1, -1)
+  directional_light(127, 127, 127, -1, -1, 1)
+  stroke(0)
+  render.draw_edges(mesh)
+  points.each { |point| render.draw_point(point) }
+  no_stroke
+  render.draw_faces(mesh)
+end
+
+def settings
+  size(1000, 1000, P3D)
+  smooth(8)
+end