Class: TextureMappingData

Inherits:

Object

• Object
• TextureMappingData

show all

Includes:

Observable

Defined in:

lib/ext/projector/projector.rb

Constant Summary

SCALE_A =

50.0

Instance Attribute Summary (collapse)

• - (Object) face_list

  Returns the value of attribute face_list.

• - (Object) texture

  Returns the value of attribute texture.

• - (Object) transform

  Returns the value of attribute transform.

Instance Method Summary (collapse)

• - (Object) begin_work
• - (Object) commit
• - (TextureMappingData) initialize constructor

  A new instance of TextureMappingData.

• - (Object) swing_step(dx, dy)
• - (Object) update

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# File 'lib/ext/projector/projector.rb', line 127

def initialize
  @texture = nil
  @transform = Matrix3d::identity
  @transform *= Matrix3d::rotate(+20.0, Vector[1.0, 0.0, 0.0, 1.0])
  @transform *= Matrix3d::rotate(+30.0, Vector[0.0, 1.0, 0.0, 1.0])
  @transform *= Matrix3d::rotate(+90.0, Vector[0.0, 0.0, 1.0, 1.0])
  @face_list = []
  @transform_begin = nil
end

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# File 'lib/ext/projector/projector.rb', line 122

def face_list
  @face_list
end

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# File 'lib/ext/projector/projector.rb', line 122

def texture
  @texture
end

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# File 'lib/ext/projector/projector.rb', line 122

def transform
  @transform
end

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# File 'lib/ext/projector/projector.rb', line 143

def begin_work
  @transform_begin = @transform
  self
end

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# File 'lib/ext/projector/projector.rb', line 155

def commit
  @transform_begin = nil
  self
end

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# File 'lib/ext/projector/projector.rb', line 148

def swing_step(dx, dy)
  a = Math::sqrt(dx * dx + dy * dy) * SCALE_A
  a > a * Float::EPSILON or return self
  self.transform = Matrix3d::rotate(a, Vector[dy, dx, 0.0, 1.0]) * @transform_begin
  self
end

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# File 'lib/ext/projector/projector.rb', line 137

def update
  changed
  notify_observers
  self
end