boolean shapes

Author: monkstone

external_library/gem/toxiclibs/geometry/boolean_shapes.rb

@@ -0,0 +1,48 @@
+require 'toxiclibs'
+load_library :control_panel
+attr_reader :gfx, :bool, :panel, :type, :hide, :polies
+include Toxi
+
+TYPE = [BooleanShapeBuilder::Type::UNION, BooleanShapeBuilder::Type::XOR].freeze
+KEY = %w(union xor).freeze
+
+def setup
+  sketch_title 'Boolean Shapes'
+  @gfx = Gfx::ToxiclibsSupport.new(self)
+  @bool = KEY.zip(TYPE).to_h
+  control_panel do |c|
+    c.title = 'Control Panel'
+    c.menu :type, KEY, 'union'
+    @panel = c
+  end
+  @hide = false
+end
+
+def draw
+  unless hide
+    @hide = true
+    panel.set_visible(hide)
+  end
+  background(160)
+  builder = BooleanShapeBuilder.new(bool[type])
+  phi = frame_count * 0.01
+  builder.add_shape(Circle.new(mouse_x, mouse_y, 50))
+  builder.add_shape(Ellipse.new(150, 130 + sin(phi) * 50, 120, 60))
+  builder.add_shape(Rect.new(200 + sin(phi * 13 / 8) * 50, 180, 100, 100))
+  builder.add_shape(
+    Triangle2D.create_equilateral_from(
+      TVec2D.new(50 + sin(phi * 15 / 13) * 50, 200), TVec2D.new(300, 200)
+    )
+  )
+  builder.add_shape(
+    Circle.new(100, 300, 50 + 30 * sin(phi * 21 / 15)).toPolygon2D(6)
+  )
+  fill(125)
+  stroke(255, 0, 0)
+  @polies = builder.compute_shapes
+  polies.each { |p| gfx.polygon2D(p) }
+end
+
+def settings
+  size(400, 400)
+end