binary intersection

Author: monkstone

external_library/gem/geomerative/binary.rb

@@ -0,0 +1,44 @@
+#!/usr/bin/env jruby
+require 'propane'
+require 'geomerative'
+
+class BinaryIntersection < Propane::App
+  include_package 'geomerative'
+  attr_reader :shp1, :shp2, :shp3, :cursor_shape
+
+  def setup
+    sketch_title 'Binary Intersection'
+    RG.init(self)
+    @shp1 = RShape.create_ring(0, 0, 120, 50)
+    @shp2 = RShape.create_star(0, 0, 100.0, 80.0, 20)
+  end
+
+  def draw
+    background(255)
+    translate(width / 2, height / 2)
+    @cursor_shape = RShape.new(shp2)
+    cursor_shape.translate(mouse_x - width / 2, mouse_y - height / 2)
+    # Only intersection does not work for shapes with more than one path
+    @shp3 = RG.diff(shp1, cursor_shape)
+    stroke_weight 3
+    if mouse_pressed?
+      fill(220, 0, 0, 30)
+      stroke(120, 0, 0)
+      RG.shape(cursor_shape)
+      fill(0, 220, 0, 30)
+      stroke(0, 120, 0)
+      RG.shape(shp1)
+    else
+      fill(220)
+      stroke(120)
+      RG.shape(shp3)
+    end
+  end
+
+  def settings
+    size(400, 400)
+    smooth
+  end
+end
+
+BinaryIntersection.new