Class: TT::Gizmo::ScaleGizmo

Inherits:
Object
  • Object
show all
Defined in:
TT_Lib2/gizmo_manipulator.rb

Overview

Since:

  • 2.7.0

Constant Summary

SIZE =

Since:

  • 2.7.0

170

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

#initialize(parent, origin, direction, color, active_color) ⇒ ScaleGizmo

Returns a new instance of ScaleGizmo

Parameters:

  • origin (Geom::Point3d)
  • direction (Geom::Vector3d)
  • color (Sketchup::Color)
  • active_color (Sketchup::Color)

Since:

  • 2.7.0



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# File 'TT_Lib2/gizmo_manipulator.rb', line 1329

def initialize( parent, origin, direction, color, active_color )
  @parent = parent
  @origin = origin.clone
  @direction = direction.clone
  @color = color
  @active_color = active_color
  
  @selected = false
  @interacting = false
  
  # Cache of the axis origin and orientation. Cached on onLButtonDown
  @old_origin = nil
  @old_vector = nil
  @old_axis = nil # [pt1, pt2]
  
  # User InputPoint
  @pt_screen_start = nil
  @pt_screen_mouse = nil
  
  @pt_start = nil
  @pt_mouse = nil
  
  # Event callbacks
  @callback = nil
  @callback_start = nil
  @callback_end = nil
end

Instance Attribute Details

#direction ⇒ Object

Since:

  • 2.7.0



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# File 'TT_Lib2/gizmo_manipulator.rb', line 1321

def direction
  @direction
end

#origin ⇒ Object

Since:

  • 2.7.0



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# File 'TT_Lib2/gizmo_manipulator.rb', line 1321

def origin
  @origin
end

Instance Method Details

#active? ⇒ Boolean

Returns:

  • (Boolean)

Since:

  • 2.7.0



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# File 'TT_Lib2/gizmo_manipulator.rb', line 1374

def active?
  @interacting == true
end

#cancel ⇒ Object

Since:

  • 2.7.0



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# File 'TT_Lib2/gizmo_manipulator.rb', line 1582

def cancel
  @selected = false
  @interacting = false
  @pt_mouse = nil
end

#draw(view) ⇒ Nil

Parameters:

  • view (Sketchup::View)

Returns:

  • (Nil)

Since:

  • 2.7.0



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# File 'TT_Lib2/gizmo_manipulator.rb', line 1551

def draw( view )
  size = view.pixels_to_model( SIZE, @origin ) 
  
  if @pt_mouse
    pt = @pt_mouse
  else
    pt = @origin.offset( @direction.reverse, size )
  end
  
  pt1 =  view.screen_coords( @origin )
  pt2 =  view.screen_coords( pt )
  
  color = (@selected) ? @active_color : @color
  view.drawing_color = color
  
  view.line_stipple = '-'
  view.line_width = 2
  view.draw2d( GL_LINE_STRIP, pt1, pt2 )
  
  view.line_stipple = ''
  view.draw_points( [pt], 8, 1, color )
  
  #if @pt_mouse
    #view.line_stipple = ''
  #  view.draw_points( [@pt_mouse], 8, 4, @active_color)
  #end
  
  view.draw2d( GL_LINE_STRIP, [-100,-100,0], [-50,-50,0] ) # Hack
end

#mouse_active? ⇒ Boolean

Returns:

  • (Boolean)

Since:

  • 2.7.0



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# File 'TT_Lib2/gizmo_manipulator.rb', line 1380

def mouse_active?
  @mouse_active == true
end

#on_transform(&block) ⇒ Object

Since:

  • 2.7.0



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# File 'TT_Lib2/gizmo_manipulator.rb', line 1358

def on_transform( &block )
  @callback = block
end

#on_transform_end(&block) ⇒ Object

Since:

  • 2.7.0



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# File 'TT_Lib2/gizmo_manipulator.rb', line 1368

def on_transform_end( &block )
  @callback_end = block
end

#on_transform_start(&block) ⇒ Object

Since:

  • 2.7.0



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# File 'TT_Lib2/gizmo_manipulator.rb', line 1363

def on_transform_start( &block )
  @callback_start = block
end

#onLButtonDown(flags, x, y, view) ⇒ Boolean

Parameters:

  • flags (Integer)
  • x (Integer)
  • y (Integer)
  • view (Sketchup::View)

Returns:

  • (Boolean)

Since:

  • 2.7.0



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# File 'TT_Lib2/gizmo_manipulator.rb', line 1396

def onLButtonDown( flags, x, y, view )
  if @selected
    # Cache the origin for use in onMouseMove to work out the distance
    # moved.
    @old_origin = @origin.clone
    @old_axis = [ @origin.clone, @direction.clone ] # Line (3D)
    
    #@pt_screen_start = Geom::Point3d.new( x, y, 0 )
    #@pt_screen_mouse = @pt_screen_start.clone
    
    # Find the closest point on the segments from where the mouse is.
    segments = gripper_segments( view )
    @pt_start = project_to_segment( view, x, y, segments, 10.0 )
    return true unless @pt_start
    
    #@last_vector = @origin.vector_to( @pt_start )
    @last_scale = 1.0
    
    @interacting = true
    @callback_start.call( self, 'Scale' ) unless @callback_start.nil?
    true
  else
    false
  end
end

#onLButtonUp(flags, x, y, view) ⇒ Boolean

Parameters:

  • flags (Integer)
  • x (Integer)
  • y (Integer)
  • view (Sketchup::View)

Returns:

  • (Boolean)

Since:

  • 2.7.0



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# File 'TT_Lib2/gizmo_manipulator.rb', line 1429

def onLButtonUp( flags, x, y, view )
  @pt_mouse = nil
  if @interacting
    @callback_end.call( self, 'Scale' ) unless @callback_end.nil?
    @interacting = false
    true
  else
    @interacting = false
    false
  end
end

#onMouseMove(flags, x, y, view) ⇒ Boolean

Parameters:

  • flags (Integer)
  • x (Integer)
  • y (Integer)
  • view (Sketchup::View)

Returns:

  • (Boolean)

Since:

  • 2.7.0



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# File 'TT_Lib2/gizmo_manipulator.rb', line 1448

def onMouseMove( flags, x, y, view )
  if @interacting
    @mouse_active = true
    
    segments = gripper_segments( view )
    screen_point = Geom::Point3d.new( x, y, 0 )
    
    @pt_mouse = project_to_segment( view, x, y, segments )
    return false unless @pt_mouse
    
    start_vector = @origin.vector_to( @pt_start )
    mouse_vector = @origin.vector_to( @pt_mouse )
    
    # Prevent scaling in negative direction.
    if mouse_vector.valid? && mouse_vector.samedirection?( @direction )
      mouse_vector.length = 0
      @pt_mouse = @origin.clone
    end
    
    total_scale = mouse_vector.length / start_vector.length
    if @last_scale == 0
      increment_scale = 0
    else
      increment_scale = total_scale / @last_scale
    end

    # Increment
    scaling = scale_array( @parent, increment_scale, flags )
    t_increment = Geom::Transformation.scaling( *scaling )
    
    # Total
    scaling = scale_array( @parent, total_scale, flags )
    t_total = Geom::Transformation.scaling( *scaling )
    
    @last_scale = total_scale
    
    scale_formatted = TT::Locale.float_to_string( total_scale, 2 )
    Sketchup.vcb_label = 'Scale'
    Sketchup.vcb_value = scale_formatted
    view.tooltip = "Scale: #{scale_formatted}"

    mask = scale_mask( @parent, flags )
    data = [ :scale, @parent.origin, total_scale, mask ]
    
    
    # Convert the local scaling transformation into global transformation.
    gizmo = @parent.parent
    gx, gy, gz = gizmo.axes.map { |axis|
      axis.direction
    }
    go = gizmo.origin
    gizmo_tr = Geom::Transformation.new( gx, gy, gz, go )
    
    t_increment = gizmo_tr * t_increment * gizmo_tr.inverse
    t_total     = gizmo_tr * t_total * gizmo_tr.inverse
    
    @callback.call( self, t_increment, t_total, data ) unless @callback.nil?
    true
  else
    @selected = mouse_over?( x, y, view )
    @mouse_active = @selected
  end
end

#scale_array(axis, scale, flags) ⇒ Array

Returns:

  • (Array)

Since:

  • 2.7.0



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# File 'TT_Lib2/gizmo_manipulator.rb', line 1514

def scale_array( axis, scale, flags )
  origin_pt = ORIGIN.clone
  if flags & CONSTRAIN_MODIFIER_MASK == CONSTRAIN_MODIFIER_MASK
    [ origin_pt, scale, scale, scale ]
  else
    case axis.id
    when :x
      [ origin_pt, scale, 1, 1 ]
    when :y
      [ origin_pt, 1, scale, 1 ]
    when :z
      [ origin_pt, 1, 1, scale ]
    end
  end
end

#scale_mask(axis, flags) ⇒ Array

Returns:

  • (Array)

Since:

  • 2.7.0



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# File 'TT_Lib2/gizmo_manipulator.rb', line 1532

def scale_mask( axis, flags )
  if flags & CONSTRAIN_MODIFIER_MASK == CONSTRAIN_MODIFIER_MASK
    [ true, true, true ]
  else
    case axis.id
    when :x
      [ true, false, false ]
    when :y
      [ false, true, false ]
    when :z
       [false, false, true ]
    end
  end
end

#tooltip ⇒ Object

Since:

  • 2.7.0



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# File 'TT_Lib2/gizmo_manipulator.rb', line 1385

def tooltip
  'Scale'
end