Class: TT::Gizmo::RotateGizmo

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

Overview

Since:

  • 2.7.0

Instance Attribute Summary collapse

Instance Method Summary collapse

Constructor Details

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

Returns a new instance of RotateGizmo

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 857

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 849

def direction
  @direction
end

#origin ⇒ Object

Since:

  • 2.7.0



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# File 'TT_Lib2/gizmo_manipulator.rb', line 849

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 902

def active?
  @interacting == true
end

#cancel ⇒ Object

Since:

  • 2.7.0



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# File 'TT_Lib2/gizmo_manipulator.rb', line 1172

def cancel
  @selected = false
  @interacting = false
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 1071

def draw( view )
  points = rotation_segment( view )
  screen_pts = screen_points( points, view )
  
  view.line_stipple = ''
  view.line_width = 2
  view.drawing_color = (@selected) ? @active_color : @color
  view.draw2d( GL_LINE_STRIP, screen_pts )
  
  if @interacting && @pt_start && @pt_mouse
    angle = @angle

    view.line_stipple = ''
    view.line_width = 1

    # Account for snapping
    start_vector = @origin.vector_to( @pt_start )
    tr = Geom::Transformation.rotation( @origin, @direction, angle )
    mouse_vector = start_vector.transform( tr )
    
    # Start Line
    view.drawing_color = @color
    view.draw( GL_LINES, [@origin, @pt_start] )
    
    # End Line
    view.drawing_color = @color
    #view.draw( GL_LINES, [@origin, @pt_mouse] )
    pt2 = @origin.offset( mouse_vector )
    view.draw( GL_LINES, [@origin, pt2] )
    
    # Rotation Pie
    #start_vector = @origin.vector_to( @pt_start )
    #mouse_vector = @origin.vector_to( @pt_mouse )
    clockwise = ( start_vector * mouse_vector % @direction ) < 0

    # Generate ticks
    unit_options = view.model.options['UnitsOptions']
    if unit_options['AngleSnapEnabled']
      radius = view.pixels_to_model( 150, @origin )
      tick_length = view.pixels_to_model( 150 / 12, @origin )
      steps = 360.0 / unit_options['SnapAngle']
      ticks = TT::Geom3d.circle2d( ORIGIN, X_AXIS, radius, steps )
      ticks.map! { |pt| [ pt, pt.offset( pt.vector_to(ORIGIN), tick_length ) ] }
      ticks.flatten!
      yaxis = start_vector * @direction
      tr = Geom::Transformation.axes( @origin, start_vector, yaxis, @direction )
      for pt in ticks
        pt.transform!( tr )
      end
      view.draw( GL_LINES, ticks )
    end
    
    # Rotation Pie
    segments = TT::Geom3d.arc_segments( angle, 64 )

    if TT::SketchUp.support?( TT::SketchUp::COLOR_ALPHA ) && @selected
      fill = Sketchup::Color.new( *@color.to_a )
      radius = view.pixels_to_model( 150, @origin )

      # Rotated Segment
      fill.alpha = 0.4
      view.drawing_color = fill
      arc = TT::Geom3d.arc( @origin, start_vector, @direction, radius, 0, angle, segments )
      polygon = arc + [@origin]
      view.draw( GL_POLYGON, polygon )

      # Unrotated Segment
      # First 180 - because OpenGL only draws convex shapes.
      half = ( clockwise ) ? -180.degrees : 180.degrees
      rest_angle = ( half - angle ) * -1
      half = half * -1 if rest_angle.abs == 360.degrees # Edge case
      fill.alpha = 0.2
      view.drawing_color = fill
      segments = TT::Geom3d.arc_segments( half, 64 )
      arc = TT::Geom3d.arc( @origin, mouse_vector, @direction, radius, 0, half, segments )
      polygon = arc + [@origin]
      view.draw( GL_POLYGON, polygon )
      # Remainding Segment
      #rest_angle = ( half - angle ) * -1
      if rest_angle.abs != 360.degrees
        segments = TT::Geom3d.arc_segments( rest_angle, 64 )
        arc = TT::Geom3d.arc( @origin, start_vector, @direction, radius, 0, rest_angle, segments )
        polygon = arc + [@origin]
        view.draw( GL_POLYGON, polygon )
      end
    end
    
    view.line_width = 1
    view.drawing_color = @color
    segments = TT::Geom3d.arc_segments( angle, 64 )
    
    for offset in [ 50, 75, 100, 125 ]
      radius = view.pixels_to_model( offset, @origin )
      arc = TT::Geom3d.arc( @origin, start_vector, @direction, radius, 0, angle, segments )
      view.draw( GL_LINE_STRIP, arc )
    end

  end
end

#mouse_active? ⇒ Boolean

Returns:

  • (Boolean)

Since:

  • 2.7.0



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# File 'TT_Lib2/gizmo_manipulator.rb', line 908

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 886

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 896

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 891

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 924

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
    
    segment = rotation_segment( view )
    @pt_start = project_to_segment( view, x, y, segment )
    if @pt_start
      @pt_mouse = @pt_start.clone
    else
      @pt_mouse = nil
      return true
    end
    
    @last_vector = @origin.vector_to( @pt_start )
    @angle = 0
    @last_angle = 0
    
    @interacting = true
    @callback_start.call( self, 'Rotate' ) 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 963

def onLButtonUp( flags, x, y, view )
  if @interacting
    @callback_end.call( self, 'Rotate' ) 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 981

def onMouseMove( flags, x, y, view )
  if @interacting
    @mouse_active = true
    
    segment = rotation_segment( view )
    screen_point = Geom::Point3d.new( x, y, 0 )
    
    @pt_mouse = project_to_segment( view, x, y, segment )
    return false unless @pt_mouse
    
    start_vector = @origin.vector_to( @pt_start )
    mouse_vector = @origin.vector_to( @pt_mouse )

    clockwise = ( start_vector * mouse_vector % @direction ) < 0

    total_angle = start_vector.angle_between( mouse_vector )

    if clockwise
      total_angle = total_angle * -1
    end

    # Snapping
    a = total_angle
    unit_options = view.model.options['UnitsOptions']
    if unit_options['AngleSnapEnabled']
      snap_angle = unit_options['SnapAngle'].degrees
      size = view.pixels_to_model( 150, @origin ) # Protractor size
      # Closest snap
      diff = a % snap_angle
      if diff > snap_angle / 2.0
        nearest_angle = a + (snap_angle - diff)
      else
        nearest_angle = a - diff
      end
      # Snapping behaviour depends if the cursor is within the Gizmo radius.
      mouse_ray = view.pickray( x, y )
      plane = [ @origin, @direction ]
      plane_point = Geom::intersect_line_plane( mouse_ray, plane )
      mouse_plane_vector = @origin.vector_to( plane_point )
      #if mouse_vector.length < size
      if mouse_plane_vector.length < size
        # Within the Gizmo radius - Full snap
        a = nearest_angle
      else
        # Outside the Gizmo radius - Proximity snap
        #rotation = (direction < 0.0) ? -nearest_angle : nearest_angle
        #rotation = (clockwise) ? -nearest_angle : nearest_angle
        rotation = nearest_angle
        tr = Geom::Transformation.rotation( @origin, @direction, rotation )
        line = [ @origin, @pt_start.transform(tr) ]
        
        nx = view.pixels_to_model( 5, @pt_mouse )
        ny = @pt_mouse.project_to_line(line).distance( @pt_mouse )

        a = nearest_angle if ny < nx # Snap!
      end
      # Adjust increment snap.
      if a != total_angle
        total_angle = a
      end
    end # if snapping
    @angle = total_angle
    
    t_total = Geom::Transformation.rotation( @origin, @direction, total_angle )
    
    increment_angle = total_angle - @last_angle
    t_increment = Geom::Transformation.rotation( @origin, @direction, increment_angle )
    
    angle_formatted = Sketchup.format_angle( total_angle )
    Sketchup.vcb_label = 'Angle'
    Sketchup.vcb_value = angle_formatted
    view.tooltip = "Rotate: #{angle_formatted}"
    
    @pt_screen_mouse = screen_point # (?) Unused?
    @last_angle = total_angle

    data = [ :rotate, @parent.origin, @direction, total_angle ]
    
    @callback.call( self, t_increment, t_total, data ) unless @callback.nil?
    true
  else
    @selected = mouse_over?( x, y, view )
    @mouse_active = @selected
  end
end

#tooltip ⇒ Object

Since:

  • 2.7.0



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# File 'TT_Lib2/gizmo_manipulator.rb', line 913

def tooltip
  'Rotate'
end