Class: Fox::FXGLGroup

Inherits:
FXGLObject show all
Includes:
Enumerable, OpenGL
Defined in:
lib/fox16/glgroup.rb

Overview

A group of OpenGL objects

Constant Summary collapse

FLT_MAX = 
1.0e+20
FLT_MIN = 
-1.0e+20

Instance Method Summary collapse

Methods inherited from FXGLObject

#canDelete, #copy

Methods inherited from FXObject

#bind, #handle, #load, #save, subclasses

Constructor Details

#initialize ⇒ FXGLGroup

Returns an initialized FXGLGroup instance



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

def initialize
  super
  @list = []
end

Instance Method Details

#[](pos) ⇒ Object

Return child at position pos.



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

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

#[]=(pos, obj) ⇒ Object

Set child at position pos to obj.



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

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

#append(obj) ⇒ Object Also known as: <<

Append child object



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

def append(obj)
  @list << obj
end

#bounds ⇒ Object

Return bounding box for this group (an FXRangef instance)



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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

#canDrag ⇒ Object

Return true if group can be dragged.



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

def canDrag
  true
end

#clear ⇒ Object

Remove all children from this group.



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

def clear
  @list.clear
end

#drag(viewer, fx, fy, tx, ty) ⇒ Object

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



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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

#draw(viewer) ⇒ Object

Draw this group into viewer (an FXGLViewer instance).



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

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

#each_child ⇒ Object Also known as: each

Iterate over child objects



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

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

#hit(viewer) ⇒ Object

Perform hit test in viewer (an FXGLViewer instance).



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

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

#identify(path) ⇒ Object

Identify object by means of path.



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

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

#insert(pos, obj) ⇒ Object

Insert child object (obj) at position pos.

Raises:

  • (NotImplementedError) 


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

def insert(pos, obj)
  raise NotImplementedError
end

#prepend(obj) ⇒ Object

Prepend child object (obj).



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

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

#remove(obj) ⇒ Object Also known as: erase

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



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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

#replace(pos, obj) ⇒ Object

Replace child object at position pos with obj.



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

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

#size ⇒ Object

Return number of objects in this group.



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

def size
  @list.size
end