Class: CGAffineTransform

Inherits:
Object
  • Object
show all
Defined in:
lib/motion-ui-geometry/cgaffinetransform.rb

Class Method Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(a, b, c, d, tx, ty) ⇒ CGAffineTransform

Returns a new instance of CGAffineTransform.



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 3

def initialize(a, b, c, d, tx, ty)
  CGAffineTransformMake(a, b, c, d, tx, ty)
end

Class Method Details

.identity ⇒ Object 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 8

def self.identity
  CGAffineTransformIdentity
end

.rotation(angle_in_rad) ⇒ Object 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 12

def self.rotation(angle_in_rad)
  CGAffineTransformMakeRotation(angle_in_rad)
end

.scale(sx, sy = nil) ⇒ Object 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 16

def self.scale(sx, sy = nil)
  CGAffineTransformMakeScale(sx, sy || sx)
end

.skew(sx, sy) ⇒ Object 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 24

def self.skew(sx, sy)
  CGAffineTransformMake 1.0, sy, sx, 1.0, 0.0, 0.0
end

.translation(tx, ty) ⇒ Object 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 20

def self.translation(tx, ty)
  CGAffineTransformMakeTranslation(tx, ty)
end

Instance Method Details

#*(other) ⇒ Object 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 98

def *(other)
  case other
  when Float, Fixnum
    scale other, other
  when CGAffineTransform
    concat other
  else
    raise TypeError, "Right operand for * must be Fixnum, "\
      "Float or CGAffineTransform (got #{other.class})."
  end
end

#+(other) ⇒ Object 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 78

def +(other)
  case other
  when CGSize
    translate other.width, other.height
  when CGPoint
    translate other.x, other.y
  else
    raise TypeError, "Right operand for + and - must be "\
      "CGSize or CGPoint (got #{other.class})."
  end
end

#-(other) ⇒ Object 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 90

def -(other)
  self + (-other)
end

#-@ ⇒ Object 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 94

def -@
  invert
end

#/(other) ⇒ Object 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 110

def /(other)
  case other
  when Float, Fixnum
    scale 1.0/other, 1.0/other
  when CGAffineTransform
    concat other.inverse
  else
    raise TypeError, "Right operand for / must be Fixnum, "\
      "Float or CGAffineTransform (got #{other.class})."
  end
end

#==(other) ⇒ Object 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 60

def ==(other)
  other.is_a?(CGAffineTransform) && CGAffineTransformEqualToTransform(self, other)
end

#=~(other) ⇒ Object 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 64

def =~(other)
  unless other.is_a? CGAffineTransform
    raise TypeError, "Right operand for =~ must be a CGAffineTransform (got #{other})."
  end

  a =~ other.a &&
    b =~ other.b &&
    c =~ other.c &&
    d =~ other.d &&
    tx =~ other.tx &&
    ty =~ other.ty
end

#apply_on(other) ⇒ Object 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 55

def apply_on(other)
  other.concat self
end

#concat(other) ⇒ Object 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 51

def concat(other)
  CGAffineTransformConcat self, other
end

#det ⇒ Object 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 123

def det
  a * d - b * c
end

#identity? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 128

def identity?
  CGAffineTransformIsIdentity self
end

#invert ⇒ Object Also known as: inverse 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 46

def invert
  CGAffineTransformInvert self
end

#rotate(angle_in_rad) ⇒ Object 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 37

def rotate(angle_in_rad)
  CGAffineTransformRotate(self, angle_in_rad)
end

#scale(sx, sy = nil) ⇒ Object 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 33

def scale(sx, sy = nil)
  CGAffineTransformScale(self, sx, sy || sx)
end

#skew(sx, sy) ⇒ Object 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 41

def skew(sx, sy)
  self * self.class.skew(sx, sy)
end

#to_s ⇒ Object 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 137

def to_s
  NSStringFromCGAffineTransform self
end

#to_value ⇒ Object 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 133

def to_value
  NSValue.valueWithCGAffineTransform self
end

#translate(tx, ty) ⇒ Object 



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# File 'lib/motion-ui-geometry/cgaffinetransform.rb', line 29

def translate(tx, ty)
  CGAffineTransformTranslate(self, tx, ty)
end