Contents

# Simple 3D Bird 
# by Ira Greenberg.  
# 
# Using a box and 2 rects to simulate a flying bird. 
# Trig functions handle the flapping and sinuous movement.

class Bird < Processing::App

  def setup
    
    size 640, 360, P3D
    
    no_stroke
    
    @ang, @ang2, @ang3, @ang4 = 0.0, 0.0, 0.0, 0.0
    @flap_speed = 0.2
    
  end
  
  def draw
  
  	background 0
  	lights
  	
  	px = sin( radians @ang3 ) * 170
  	py = cos( radians @ang3 ) * 300
  	pz = sin( radians @ang4 ) * 500
  	
  	translate width/2 + px, height/2 + py, -700 + pz
  	
  	rotate_x sin( radians @ang2 ) * 120
  	rotate_y sin( radians @ang2 ) * 50
  	rotate_z sin( radians @ang2 ) * 65
  	
  	fill 153
  	box 20, 100, 20
  	
  	fill 204
  	push_matrix
  		rotate_y sin( radians @ang ) * -20
  		rect -75, -50, 75, 100
  	pop_matrix
  	
  	push_matrix
  		rotate_y sin( radians @ang ) * 20
  		rect 0, -50, 75, 100
  	pop_matrix
  	
  	@ang += @flap_speed
  	
  	@flap_speed *= -1 if @ang >  PI || @ang < -PI
  	
  	@ang2 += 0.01
  	@ang3 += 2.0
  	@ang4 += 0.75
  	
  end
  
end

Bird.new :title => "Bird"

Version data entries

2 entries across 2 versions & 1 rubygems

Version	Path
ruby-processing-1.0.11	samples/processing_app/3D/transform/bird.rb
ruby-processing-1.0.10.1	samples/processing_app/3D/transform/bird.rb