organise toxiclibs examples

Author: monkstone

samples/external_library/ruby_gem/toxiclibs/model_align.rb renamed to samples/external_library/ruby_gem/toxiclibs/geometry/model_align.rb

@@ -0,0 +1,43 @@
+# The Nature of Code
+# <http://www.shiffman.net/teaching/nature>
+# Spring 2010
+# Toxiclibs example: http://toxiclibs.org/
+
+# Force directed graph
+# Heavily based on: http://code.google.com/p/fidgen/
+# A cluster is a grouping of Nodes
+class Cluster
+  include Processing::Proxy
+  attr_reader :nodes, :diameter, :physics
+
+  # We initialize a Cluster with a number of nodes, a diameter, and centerpoint
+  def initialize(p, n, d, center)
+    # Set the diameter
+    @diameter, @physics = d, p
+    # Create the nodes
+    @nodes = (0..n).map { Node.new(center.add(TVec2D.randomVector)) }
+    # Connect all the nodes with a Spring
+    nodes[0..nodes.size - 2].each_with_index do |ni, i|
+      nodes[i + 1..nodes.size - 1].each do |nj|
+        # A Spring needs two particles, a resting length, and a strength
+        physics.addSpring(Physics::VerletSpring2D.new(ni, nj, diameter, 0.01))
+      end
+    end
+  end
+
+  def display
+    # Show all the nodes
+    nodes.each(&:display)
+  end
+
+  # Draw all the internal connections
+  def show_connections
+    stroke(0, 150)
+    stroke_weight(2)
+    nodes[0..nodes.size - 2].each_with_index do |pi, i|
+      nodes[i + 1..nodes.size - 1].each do |pj|
+        line(pi.x, pi.y, pj.x, pj.y)
+      end
+    end
+  end
+end

samples/external_library/ruby_gem/toxiclibs/inflate_mesh.rb renamed to samples/external_library/ruby_gem/toxiclibs/physics/inflate_mesh.rb

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+# The Nature of Code
+# <http://www.shiffman.net/teaching/nature>
+# Spring 2010
+# Toxiclibs example: http://toxiclibs.org/
+
+# Force directed graph
+# Heavily based on: http://code.google.com/p/fidgen/
+
+# Notice how we are using inheritance here!
+# We could have just stored a reference to a VerletParticle object
+# inside the Node class, but inheritance is a nice alternative
+class Node < Physics::VerletParticle2D
+  include Processing::Proxy
+
+  def initialize(pos)
+    super(pos)
+  end
+
+  # All we're doing really is adding a :display function to a VerletParticle
+  def display
+    fill(0, 150)
+    stroke(0)
+    stroke_weight(2)
+    ellipse(x, y, 16, 16)
+  end
+end

samples/external_library/ruby_gem/toxiclibs/physics/simple_cluster/cluster.rb

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+# The Nature of Code
+# Daniel Shiffman
+# http://natureofcode.com
+
+# Force directed graph,
+# heavily based on: http://code.google.com/p/fidgen/
+
+require 'toxiclibs'
+require_relative 'cluster'
+require_relative 'node'
+
+attr_reader :physics, :cluster, :f, :show_physics, :show_particles
+
+def setup
+  size(640, 360)
+  @f = createFont('Georgia', 12, true)
+
+  @show_physics = true
+  @show_particles = true
+  @show_physics = true
+  @show_particles = true
+  # Initialize the physics
+  @physics = Physics::VerletPhysics2D.new
+  @physics.setWorldBounds(Toxi::Rect.new(10, 10, width - 20, height - 20))
+
+  # Spawn a new random graph
+  @cluster = Cluster.new(physics, 8, 100, TVec2D.new(width / 2, height / 2))
+end
+
+def draw
+  # Update the physics world
+  physics.update
+  background(255)
+  # Display all points
+  cluster.display if show_particles
+  # If we want to see the physics
+  cluster.show_connections if show_physics
+  # Instructions
+  fill(0)
+  text_font(f)
+  text("'p' to display or hide particles\n'c' to display or hide connections\n'n' for new graph", 10, 20)
+end
+
+# Key press commands
+def key_pressed
+  case key
+  when 'c'
+    @show_physics = !show_physics
+    @show_particles = true if show_physics
+  when 'p'
+    @show_particles = !show_particles
+    @show_particles = true unless show_physics
+  when 'n'
+    physics.clear
+    @cluster = Cluster.new(physics, rand(3..20), rand(10..width / 2), TVec2D.new(width / 2, height / 2))
+  end
+end