new hemesh examples

Author: monkstone

external_library/java/hemesh/mesh_selection.rb

@@ -0,0 +1,57 @@
+#!/usr/bin/env jruby -v -W2
+# frozen_string_literal: true
+require 'arcball'
+require 'propane'
+
+# MeshSelection class
+class MeshSelection < Propane::App
+
+  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'
+    Processing::ArcBall.init(self)
+    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)
+    # 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
+end
+
+MeshSelection.new

external_library/java/hemesh/progress_reporter.rb

@@ -0,0 +1,68 @@
+#!/usr/bin/env jruby
+# frozen_string_literal: true
+require 'propane'
+require 'arcball'
+
+# ProgressReporter class
+class ProgressReporter < Propane::App
+  load_library :hemesh
+  # namespace for hemesh java classes
+  module WBlut
+    java_import 'wblut.processing.WB_Render'
+    java_import 'wblut.core.WB_ProgressReporter'
+    include_package 'wblut.hemesh'
+  end
+
+  attr_reader :mesh, :render, :pr
+  def settings
+    size(1000, 1000, P3D)
+    smooth(8)
+  end
+
+  def setup
+    sketch_title 'Progress Reporter'
+    Processing::ArcBall.init(self)
+    @pr= WBlut::WB_ProgressReporter.new(5) # maximum depth of reporting
+    pr.start
+    create_mesh
+    @render= WBlut::WB_Render.new(self)
+  end
+
+  def draw
+    background(120)
+    directional_light(255, 255, 255, 1, 1, -1)
+    directional_light(127, 127, 127, -1, -1, 1)
+    fill(255)
+    no_stroke
+    render.draw_faces(mesh)
+    stroke(0)
+    render.draw_edges(mesh)
+  end
+
+  def create_mesh
+    creator= WBlut::HEC_Geodesic.new.setC(2).setB(2).set_radius(300)
+    @mesh= WBlut::HE_Mesh.new(creator)
+    mesh.add(WBlut::HE_Mesh.new(
+    WBlut::HEC_Grid.new(10, 10, 700, 700).set_center(0, 0, -350))
+    )
+    modifier= WBlut::HEM_Lattice.new
+    modifier.set_width(10) # desired width of struts
+    modifier.set_depth(10) # depth of struts
+    # treat edges sharper than this angle as hard edges
+    modifier.set_threshold_angle(1.5 * HALF_PI)
+    # try to fuse planar adjacent planar faces created by the extrude
+    modifier.set_fuse(true)
+    # threshold angle to be considered coplanar
+    modifier.set_fuse_angle(0.1 * HALF_PI)
+    sel= WBlut::HE_Selection.select_random_faces(mesh, 0.4)
+    sel.modify(modifier)
+    mesh.smooth(2)
+  end
+
+  def stop
+    pr.interrupt
+    super.stop
+  end
+end
+
+ProgressReporter.new