Method: RMath3D::RMtx2#rotation

Defined in:
lib/rmath3d/rmath3d_plain.rb

#rotation(radian) ⇒ Object

call-seq: rotation(radian) -> self

Makes a matrix that rotates around the z-axis.



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# File 'lib/rmath3d/rmath3d_plain.rb', line 321

def rotation( radian )
  s = Math.sin( radian )
  c = Math.cos( radian )

  setIdentity()
  self.e00 =  c
  self.e01 = -s
  self.e10 =  s
  self.e11 =  c

  return self
end