Class: GlimR::AngleAxis

Inherits:
Array show all
Defined in:
lib/glimr/renderer/transform.rb

Class Method Summary collapse

Instance Method Summary collapse

Methods inherited from Array

#-@, #add, #cross_product, #delete_first, #dot, #sub

Class Method Details

.[](a, x, y, z) ⇒ Object 



293
294
295
296
297
 
# File 'lib/glimr/renderer/transform.rb', line 293

def self.[](a,x,y,z)
  aa = new
  aa.push(a,*normalize(Vector[x,y,z]))
  aa
end

.normalize(v) ⇒ Object 



314
315
316
317
 
# File 'lib/glimr/renderer/transform.rb', line 314

def self.normalize(v)
  v = (v * (1.0 / v.r)).to_a if (v.r - 1) > 0.001
  v.to_a
end

Instance Method Details

#normalize ⇒ Object 



310
311
312
 
# File 'lib/glimr/renderer/transform.rb', line 310

def normalize
  self.class[*self]
end

#to_aa ⇒ Object 



306
307
308
 
# File 'lib/glimr/renderer/transform.rb', line 306

def to_aa
  self
end

#to_quat ⇒ Object 



299
300
301
302
303
304
 
# File 'lib/glimr/renderer/transform.rb', line 299

def to_quat
  a,x,y,z = normalize
  s = Math.sin(a*Math::PI/90)
  c = Math.cos(a*Math::PI/90)
  Quaternion[c, x*s, y*s, z*s]
end