test_sbend.rb

load "waveguide.rb"
include RBA
include MyBasic
# create a new view (mode 1) with an empty layout
main_window = RBA::Application::instance.main_window
layout = main_window.create_layout(0).layout
layout_view = main_window.current_view
# set the database unit (shown as an example, the default is 0.001)
layout.dbu = 0.001
# create a cell
cell = layout.create_cell("TOP")
# create a layer
layer_index1 = layout.insert_layer(RBA::LayerInfo::new(1, 0))
layer_index2 = layout.insert_layer(RBA::LayerInfo::new(2, 0))
layer_index3 = layout.insert_layer(RBA::LayerInfo::new(3, 0))

# add a shape

#p1 = DPoint.new(0.0,0.0)
#radius = 10.0/layout.dbu
#start_angle = 270.0
#span_angle = 90.0
#pts = linearc_one_point_two_angle(p1,radius,start_angle,span_angle)
#wg1 = Waveguide.new(pts,width,90,0)
#cell.shapes(layer_index2).insert(wg1.poly)

for iter in  [20]
  width = 2.0/layout.dbu
  radius = 5.0/layout.dbu
  len = 10.0/layout.dbu
  dx = 20.0/layout.dbu
  dy = 0.0/layout.dbu
  start_x = 0
  start_y = 60.0/layout.dbu*iter
  dir1 = 0
  dir2 = iter*10.0
  p0 = RBA::DPoint.new(start_x-len*Math::cos(dir1/180.0*Math::PI), 
                       start_y-len*Math::sin(dir1/180.0*Math::PI))
  p1 = RBA::DPoint.new(start_x,start_y)
  dir1 = line_angle(p0,p1)/Math::PI*180.0
  p2 = RBA::DPoint.new(dx+start_x, dy+start_y)
  p3 = RBA::DPoint.new(len*Math::cos(dir2/180.0*Math::PI)+dx+start_x, 
                       len*Math::sin(dir2/180.0*Math::PI)+dy+start_y)
  dir2 = line_angle(p2,p3)/Math::PI*180.0
  pts1 = [p0, p1]
  pts2 = [p2, p3]
  pts3 = sbend(p1,dir1,p2,dir2,radius,5)
  pts = pts1+pts3+pts2
  wg1 = Waveguide.new(pts,width)
  cell.shapes(layer_index1).insert(wg1.poly)
end

# select the top cell in the view, set up the view's layer list and
# fit the viewport to the extensions of our layout

#tst = RBA::Text.new('Hello',0,0)
#cell.shapes(layer_index1).insert(tst)
layout_view.select_cell(cell.cell_index, 0)
layout_view.add_missing_layers
layout_view.zoom_fit