oguzhankoral
121 lines
2.8 KiB
Ruby
121 lines
2.8 KiB
Ruby
#-------------------------------------------------------------------------------
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#
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# Thomas Thomassen
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# thomas[at]thomthom[dot]net
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#
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#-------------------------------------------------------------------------------
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require_relative 'core.rb'
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# Caches drawing instructions so complex calculations for generating the
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# GL data can be reused.
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#
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# Redirect all Skethcup::View commands to a DrawCache object and call
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# #render in a Tool's #draw event.
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#
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# @example
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# class Example
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# def initialize( model )
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# @draw_cache = TT::DrawCache.new( model.active_view )
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# end
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# def deactivate( view )
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# @draw_cache.clear
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# end
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# def resume( view )
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# view.invalidate
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# end
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# def draw( view )
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# @draw_cache.render
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# end
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# def onLButtonUp( flags, x, y, view )
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# point = Geom::Point3d.new( x, y, 0 )
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# view.draw_points( point, 10, 1, 'red' )
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# view.invalidate
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# end
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# end
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#
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# @since 2.8.0
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module SpeckleConnector
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class TT::DrawCache
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# @param [Sketchup::View] view
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#
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# @since 2.8.0
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def initialize( view )
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@view = view
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@commands = []
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end
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# Clears the cache. All drawing instructions are removed.
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#
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# @return [Nil]
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# @since 2.8.0
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def clear
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@commands.clear
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nil
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end
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# Draws the cached drawing instructions.
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#
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# @return [Sketchup::View]
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# @since 2.8.0
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def render
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view = @view
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for command in @commands
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view.send( *command )
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end
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view
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end
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# Cache drawing commands and data. These methods received the finsihed
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# processed drawing data that will be executed when #render is called.
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[
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:draw,
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:draw2d,
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:draw_line,
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:draw_lines,
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:draw_points,
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:draw_polyline,
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:draw_text,
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:drawing_color=,
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:line_stipple=,
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:line_width=,
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:set_color_from_line
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].each { |symbol|
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define_method( symbol ) { |*args|
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@commands << args.unshift( this_method )
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@commands.size
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}
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}
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# Pass through methods to Sketchup::View so that the drawing cache object
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# can easily replace Sketchup::View objects in existing codes.
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#
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# @since 2.8.0
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def method_missing( *args )
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view = @view
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method = args.first
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if view.respond_to?( method )
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view.send(*args)
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else
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raise NoMethodError, "undefined method `#{method}' for #{self.class.name}"
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end
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end
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# @return [String]
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# @since 2.8.0
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def inspect
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hex_id = TT.object_id_hex( self )
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"#<#{self.class.name}:#{hex_id} Commands:#{@commands.size}>"
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end
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private
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# http://www.ruby-forum.com/topic/75258#895569
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def this_method
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( caller[0] =~ /`([^']*)'/ and $1 ).intern
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end
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end # class TT::DrawCache
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end
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