Class: TT::GL_Image

Inherits:

Object

• Object
• TT::GL_Image

Defined in:

TT_Lib2/gl_image.rb

Overview

Note:

Alpha stage. Very likely to be subject to change!

Read .gli file into an array of drawing instructions. The instructions is an array of method name and arguments.

POLYGON [10,0],[14,4],[6,4]

becomes

[ :draw2d, [ Point3d(10,0,0), Point3d(14,4,0), Point3d(6,4,0) ] ]

This translate to arguments that is sent to the View object by using the .send method.

GL Image Format

Data Types

<color>

• red <int>

• green <int>

• blue <int>

• alpha <int> (Default = 255)

<point>

• x <float>

• y <float>

Instructions

COLOR

• color <color>

WIDTH

• width <int>

STIPPLE

• width <string>

POINTS

• type <string>

  TRIANGLE_OPEN
  TRIANGLE_FILLED
  SQUARE_OPEN
  SQUARE_FILLED
  CIRCLE, O
  DISC, *
  PLUS, +
  CROSS, X

• size <int>

• points <point>+

LINES

• points <point>+

POLYLINE

• points <point>+

BEZIER

• points <point>+

LOOP

• points <point>+

ARC

• center <point>

• radius <float>

• degrees <float>

• segments <int>

• start_angle <float> (Default = 0.0)

CIRCLE

• center <point>

• radius <float>

• segments <int>

RECT

• left <float>

• top <float>

• width <float>

• height <float>

• corner_radius <float> (Default = 0.0)

POLYGON

• points <point>+

PIE

• center <point>

• radius <float>

• degrees <float>

• segments <int>

• start_angle <float> (Default = 0.0)

DISC

• center <point>

• radius <float>

• segments <int>

GRADIENT

• left <float>

• top <float>

• width <float>

• height <float>

• steps <int>

• horizontal <bool>

• start_color <color>

• end_color <color>

Since:

• 2.7.0

Defined Under Namespace

Classes: ParseError

Instance Method Summary

• #draw(view, x, y) ⇒ Object
• #initialize(gl_image_file) ⇒ GL_Image constructor

  A new instance of GL_Image.

• #inspect ⇒ String

Constructor Details

#initialize(gl_image_file) ⇒ GL_Image

Returns a new instance of GL_Image

Parameters:

• gl_image_file (String)

Since:

• 2.7.0

# File 'TT_Lib2/gl_image.rb', line 134

def initialize( gl_image_file )
  unless File.exist?( gl_image_file )
    raise( ArgumentError, "GL Image '#{gl_image_file}' not found." )
  end
  @file = gl_image_file
  @instructions = read_file( gl_image_file )
end

Instance Method Details

#draw(view, x, y) ⇒ Object

Parameters:

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

Since:

• 2.7.0

# File 'TT_Lib2/gl_image.rb', line 147

def draw( view, x, y )
  # Reset viewport
  view.line_width = 1
  view.line_stipple = ''
  view.drawing_color = [0,0,0]
  # Process drawing instructions. Offset drawing by given coordinates.
  offset = Geom::Vector3d.new( x, y, 0 )
  for instruction in @instructions
    command, arguments = instruction
    positioned_arguments = arguments.map { |argument|
      if argument.is_a?( Geom::Point3d )
        argument.transform( offset )
      else
        argument
      end
    }
    begin
      view.send( command, *positioned_arguments )
    rescue => e
      p instruction
      raise( e )
    end
  end
end

#inspect ⇒ String

Returns:

• (String)

Since:

• 2.7.0

# File 'TT_Lib2/gl_image.rb', line 174

def inspect
  hex_id = TT.object_id_hex( self )
  "#<#{self.class.name}:#{hex_id}>"
end