Class: Demo

Inherits:
Processing::App
  • Object
show all
Defined in:
lib/demo.rb,
lib/demo-rotated.rb

Instance Method Summary collapse

Instance Method Details

#draw ⇒ Object 



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# File 'lib/demo.rb', line 53

def draw
end

#setup ⇒ Object 



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# File 'lib/demo.rb', line 11

def setup
	render_mode(P2D)
	no_loop
	background(0,0,0)
	color_mode(RGB, 1.0)
	stroke(1,1,0,1)
	@highlight_block = lambda do |original, mapped, s|
				s.in_basis do
					rect_mode(CENTER)
					stroke(1,0,0)
					fill(1,0,0)
					rect(original[:x], original[:y], 3, 3)
				end
			   end

	points = []
	200.times {|n|points << {:x => n, :y => random(300)}}

#		Long-winded way of setting up a coordinate system explicitly

#		@x_unit_vector = {:x => 1.0, :y => 0.0}
#		@y_unit_vector = {:x => 0.0, :y => 1.0}
#		x_range = ContinuousRange.new({:minimum => 0, :maximum => 200})
#		y_range = ContinuousRange.new({:minimum => 0, :maximum => 300})
#		@basis = CoordinateSystem.new(Axis.new(@x_unit_vector,x_range), Axis.new(@y_unit_vector,y_range), self, [[1,0],[0,1]])

#		Accomplish the above in a single line below...
	@basis = CoordinateSystem.standard({:minimum => 0, :maximum => 200}, {:minimum => 0, :maximum => 300}, self, {:x => "X-Axis", :y => "Y-Axis"})

	screen_transform = Transform.new({:x => 2, :y => -2}, {:x => 300, :y => 900})
	@screen = Screen.new(screen_transform, self, @basis)
	@screen.draw_axes(10,10, :gridlines => false)
	stroke(1,1,0,1)
	fill(1,1,0)
	rect_mode(CENTER)
	@screen.plot(points, :track => true) do |original, mapped, s|
		s.in_basis do
			rect(original[:x], original[:y], 3, 3)
		end
	end
end