Method: RMath3D::RMtx2#mul!

Defined in:
lib/rmath3d/rmath3d_plain.rb

#mul!(other) ⇒ Object

call-seq: mtx1.mul!( mtx2 )

mtx1 *= mtx2



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# File 'lib/rmath3d/rmath3d_plain.rb', line 504

def mul!( other )
  case other
  when Fixnum, Float, Bignum
    self.e00 = other*self.e00
    self.e01 = other*self.e01
    self.e10 = other*self.e10
    self.e11 = other*self.e11

    return self
  when RMtx2
    result = RMtx2.new
    for row in 0...2 do
      for col in 0...2 do
        sum = 0.0
        for i in 0...2 do
          sum += getElement( row, i ) * other.getElement( i, col )
        end
        result.setElement( row, col, sum )
      end
    end

    self.e00 = result.e00
    self.e01 = result.e01
    self.e10 = result.e10
    self.e11 = result.e11

    return self
  end
end