Class: Fox::FXGLGroup

Inherits:

FXGLObject

• Object
• FXGLObject
• Fox::FXGLGroup

show all

Includes:

Enumerable

Defined in:

lib/fox16/glgroup.rb

Overview

Constant Summary

FLT_MAX =

1.0e+20

FLT_MIN =

-1.0e+20

Instance Method Summary (collapse)

• - (Object) [](pos)

  Return child at position pos.

• - (Object) []=(pos, obj)

  Set child at position pos to obj.

• - (Object) append(obj) (also: #<<)

  Append child object.

• - (Object) bounds

  Return bounding box for this group (an FXRangef instance).

• - (Object) canDrag

  Return true if group can be dragged.

• - (Object) clear

  Remove all children from this group.

• - (Object) drag(viewer, fx, fy, tx, ty)

  Drag group object around in viewer (an FXGLViewer instance), from (fx, fy) to (tx, ty).

• - (Object) draw(viewer)

  Draw this group into viewer (an FXGLViewer instance).

• - (Object) each_child (also: #each)

  Iterate over child objects.

• - (Object) hit(viewer)

  Perform hit test in viewer (an FXGLViewer instance).

• - (Object) identify(path)

  Identify object by means of path.

• - (FXGLGroup) initialize constructor

  Returns an initialized FXGLGroup instance.

• - (Object) insert(pos, obj)

  Insert child object (obj) at position pos.

• - (Object) prepend(obj)

  Prepend child object (obj).

• - (Object) remove(obj) (also: #erase)

  If obj is a reference to an FXGLObject in this group, remove the child object from the list.

• - (Object) replace(pos, obj)

  Replace child object at position pos with obj.

• - (Object) size

  Return number of objects in this group.

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# File 'lib/fox16/glgroup.rb', line 21

def initialize
  super
  @list = []
end

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# File 'lib/fox16/glgroup.rb', line 36

def [](pos)
  @list[pos]
end

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# File 'lib/fox16/glgroup.rb', line 43

def []=(pos, obj)
  @list[pos] = obj
end

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# File 'lib/fox16/glgroup.rb', line 131

def append(obj)
  @list << obj
end

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# File 'lib/fox16/glgroup.rb', line 60

def bounds
  box = nil
  if @list.empty?
    box = FXRangef.new(0.0, 0.0, 0.0, 0.0, 0.0, 0.0)
  else
    box = FXRangef.new(FLT_MAX, -FLT_MAX, FLT_MAX, -FLT_MAX, FLT_MAX, -FLT_MAX)
    @list.each { |obj| box.include!(obj.bounds) }
  end
  box
end

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# File 'lib/fox16/glgroup.rb', line 102

def canDrag
  true
end

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# File 'lib/fox16/glgroup.rb', line 162

def clear
  @list.clear
end

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# File 'lib/fox16/glgroup.rb', line 110

def drag(viewer, fx, fy, tx, ty)
  @list.each { |obj| obj.drag(viewer, fx, fy, tx, ty) }
end

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# File 'lib/fox16/glgroup.rb', line 74

def draw(viewer)
  @list.each { |obj| obj.draw(viewer) }
end

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# File 'lib/fox16/glgroup.rb', line 50

def each_child # :yields: childObject
  @list.each { |child| yield child }
  self
end

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# File 'lib/fox16/glgroup.rb', line 81

def hit(viewer)
#     GL.PushName(0xffffffff)
  GL.PushName(1000000)
  @list.each_with_index do |obj, i|
    GL.LoadName(i)
	obj.hit(viewer)
  end
  GL.PopName
end

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# File 'lib/fox16/glgroup.rb', line 94

def identify(path)
  objIndex = path.shift
  @list[objIndex].identify(path)
end

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# File 'lib/fox16/glgroup.rb', line 117

def insert(pos, obj)
  raise NotImplementedError
end

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# File 'lib/fox16/glgroup.rb', line 124

def prepend(obj)
  @list.unshift(obj)
end

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# File 'lib/fox16/glgroup.rb', line 149

def remove(obj)
  if obj.is_a? FXGLObject
    @list.delete(obj)
  else
    @list.delete_at(obj)
  end
end

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# File 'lib/fox16/glgroup.rb', line 140

def replace(pos, obj)
  @list[pos] = obj
end

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# File 'lib/fox16/glgroup.rb', line 29

def size
  @list.size
end