cool sketches, difficult libray

Author: monkstone

external_library/java/hemesh/README.md

@@ -1,3 +1,3 @@
 # HE_Mesh
 
-Is 3D Geometry java library for processing by [Frederik Vanhoutte](http://www.wblut.com/) see http://www.wblut.com/he_mesh/ sketches in this folder are expected to work with version 5.1.2. The library has changed a lot over the years and not necessarily for the better (dependencies seem to be expanding exponentially, this cannot be a good thing, just look at the disaster that is ruby-on-rails)
+Is 3D Geometry java library for processing by [Frederik Vanhoutte](http://www.wblut.com/) see http://www.wblut.com/he_mesh/ sketches in this folder are expected to work with version 5.1.2. The library has changed a lot over the years and not necessarily for the better (dependencies seem to be expanding exponentially, this cannot be a good thing, just look at the disaster that is ruby-on-rails). However Frederik Vanhoutte has developed some rather cool sketches, it's just that need a lot of imagination and persistence to create equally good ones using the library.

external_library/java/hemesh/mesh_selection.rb

@@ -0,0 +1,46 @@
+load_library :hemesh
+include_package 'wblut.hemesh'
+java_import 'wblut.processing.WB_Render'
+
+attr_reader :selection, :invselection, :box, :render
+
+def settings
+  size(800, 800, P3D)
+end
+
+def setup
+  sketch_title 'Mesh Selection'
+  box_creator = HEC_Box.new.set_width(400)
+                       .set_width_segments(10)
+                       .set_height(200)
+                       .set_height_segments(4)
+                       .set_depth(200)
+                       .set_depth_segments(4)
+  @box = HE_Mesh.new(box_creator)
+  ArcBall.init(self)
+  # define a selection
+  @selection = HE_Selection.new(box)
+  # add faces to selection
+  box.f_itr.each { |face| selection.add(face) if rand(100) < 50 }
+  invselection = selection.get
+  invselection.invert_faces
+  cc = HES_CatmullClark.new.set_keep_edges(false).set_keep_boundary(false)
+  # only modify selection (if applicable)
+  selection.subdivide(cc, 2)
+  # modifiers try to preserve selections whenever possible
+  selection.modify(HEM_Extrude.new.set_distance(25).set_chamfer(0.4))
+  invselection.modify(HEM_Extrude.new.set_distance(-5).set_chamfer(0.4))
+  @render = WB_Render.new(self)
+end
+
+def draw
+  background(25)
+  lights
+  fill(255)
+  no_stroke
+  render.draw_faces(box)
+  fill(255, 0, 0)
+  render.draw_faces(selection)
+  stroke(0)
+  render.draw_edges(box)
+end