require 'sketchup.rb'		


class MyEntityObserver1 < Sketchup::EntityObserver
def onChangeEntity(entity)
model=Sketchup.active_model
entities=model.active_entities
layers = model.layers
layers["grille"].visible=false
layers["grille_vue"].visible=true
end
end
 
class MyEntityObserver2 < Sketchup::EntityObserver
def onChangeEntity(entity)
model=Sketchup.active_model
entities=model.active_entities
layers = model.layers
layers["grille"].visible=true
layers["grille_vue"].visible=false
end
end
 

def peps_01_02
 
model=Sketchup.active_model
entities=model.active_entities
sel=model.selection
layers = model.layers

status=model.start_operation("Grille")	

titre=["Hauteur ","Largeur  ","Espacement "]
valeurs=[300.mm,210.mm,5.mm]
resultats = inputbox titre,valeurs,"Paramètres de la Grille"

hauteur=resultats[0]
largeur=resultats[1]
n=resultats[2]

groupe=entities.add_group 
ent_groupe=groupe.entities
groupe.name="grille"

g1=entities.add_group 
ent_g1=g1.entities
g1.name="b1"

g2=entities.add_group 
ent_g2=g2.entities
g2.name="b2"

nouveau_calq1 = layers.add "grille"
nouveau_calq2=layers.add "grille_vue"

calq_actif = model.active_layer
old_lay=calq_actif.name


depth = 10.mm
width = 10.mm
pts = []

model.active_layer = layers["grille_vue"]
pts[0] = [-width, 0, 0]
pts[1] = [0, 0, 0]
pts[2] = [0, depth, 0]
pts[3] = [-width, depth, 0]
face2 = ent_g2.add_face pts
g2.material="red"
model.active_layer = layers["grille"]
lay=layers["grille_vue"]
lay.visible=false

for i in 1..largeur/n
point1 = Geom::Point3d.new (n*i,0,0)
point2 = Geom::Point3d.new (n*i,hauteur,0)
constline = ent_groupe.add_cline point1,point2
end

for i in 1..hauteur/n
point1 = Geom::Point3d.new (0,n*i,0)
point2 = Geom::Point3d.new (largeur,n*i,0)
constline = ent_groupe.add_cline point1,point2
end

pts[0] = [0, -depth, 0]
pts[1] = [width, -depth, 0]
pts[2] = [width, 0, 0]
pts[3] = [0, 0, 0]
face1 = ent_g1.add_face pts
g1.material="green"

model.commit_operation()

entities.each{|e|
if e.typename=="Group"
	if e.name=="b2"
	e.add_observer(MyEntityObserver2.new)
	end
	if e.name=="b1"
	e.add_observer(MyEntityObserver1.new)
	end
end
}

model.active_layer = layers[old_lay]

Sketchup.send_action "viewZoomExtents:"

end


if( not file_loaded?("peps_01_02.rb") )
	add_separator_to_menu("Plugins")
	  UI.menu("Plugins").add_item("peps_01_02") {peps_01_02}
	  end