Module: CVFFI::CvMatFunctions

Included in:
CvMat, Mat
Defined in:
lib/opencv-ffi-wrappers/core/mat.rb

Defined Under Namespace

Modules: ClassMethods

Class Method Summary collapse

Instance Method Summary collapse

Class Method Details

.included(base) ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/mat.rb', line 24

def self.included(base)
  base.extend(ClassMethods)
end

Instance Method Details

#at_f(i, j) ⇒ Object

This is somewhat awkward because the FFI::Struct-iness of CvMat uses the Array-like API calls (at, [], size, etc)



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# File 'lib/opencv-ffi-wrappers/core/mat.rb', line 82

def at_f(i,j)
  CVFFI::cvGetReal2D( self, i, j )
end

#at_scalar(i, j) ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/mat.rb', line 90

def at_scalar(i,j)
  CVFFI::cvGet2D( self, i, j )
end

#clone ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/mat.rb', line 98

def clone
  CVFFI::cvCloneMat( self )
end

#coerce(other) ⇒ Object

This is the somewhat funny Matrix format for coerce which returns the template class as well as the coerced version of the matrix



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# File 'lib/opencv-ffi-wrappers/core/mat.rb', line 31

def coerce( other )
  case other
           when Matrix 
             [other, to_Matrix]
           when Vector 
             [other, to_Vector]
           else
             raise TypeError, "#{self.class} can't be coerced into #{other.class}, fool"
           end
end

#mat_size ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/mat.rb', line 102

def mat_size
  CVFFI::CvSize.new( :width => self.width, :height => self.height ) 
end

#print(opts = {}) ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/mat.rb', line 120

def print( opts = {} )
  CVFFI::print_matrix( self, opts )
end

#set_f(i, j, f) ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/mat.rb', line 86

def set_f( i,j, f )
  CVFFI::cvSetReal2D( self, i, j, f )
end

#set_scalar(i, j, f) ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/mat.rb', line 94

def set_scalar( i,j, f )
  CVFFI::cvSet2D( self, i, j, f )
end

#to_a ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/mat.rb', line 76

def to_a
  to_Vector.to_a
end

#to_CvMat(opt = {}) ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/mat.rb', line 43

def to_CvMat( opt = {} )
  if opt[:type]
    raise "Need to convert CvMat types" if opt[:type] != type
  end
  self
end

#to_Matrix ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/mat.rb', line 50

def to_Matrix
  Matrix.build( height, width ) { |i,j|
    at_f(i,j)
  }
end

#to_ScalarMatrix ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/mat.rb', line 56

def to_ScalarMatrix
  ScalarMatrix.rows Array.new( height ) { |y|
    Array.new( width ) { |x|
      d = CVFFI::cvGet2D( self, y,x )
      d.w
    }
  }
end

#to_Vector ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/mat.rb', line 65

def to_Vector
  to_Matrix if height > 1 and width > 1
  a = []
  if height == 1
    a = Array.new( width ) { |i| at_f(0,i) } 
  else
    a = Array.new( height ) { |i| at_f(i,0) }
  end
  Vector[*a]
end

#transpose ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/mat.rb', line 110

def transpose
  a = twin
  CVFFI::cvTranspose( self, a )
  a
end

#twin ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/mat.rb', line 106

def twin
  CVFFI::cvCreateMat( self.height, self.width, self.type )
end

#zero ⇒ Object 



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# File 'lib/opencv-ffi-wrappers/core/mat.rb', line 116

def zero
  CVFFI::cvSetZero( self )
end