Load Component and Rotation

pingpink

Hi ,

I'm trying to load a sunshade component in " 4 sides of drawing edges " .

I can do only one side. Anyone can give me any idea how can I load with a rotation in a code ?
I want the code can apply around a building facade.


require 'sketchup.rb'

   def insert_file_skp(sFile, point, sName)
 
   model = Sketchup.active_model
   pants_def = model.definitions.load sFile
   
   # Then define a location, and place our skp there.
   pants_location = point 
   transform = Geom;;Transformation.new pants_location
   entities = Sketchup.active_model.active_entities
   instance = entities.add_instance pants_def, transform
   instance.name= sName
   return instance
end


def move_compo(edge, compo)
  model = Sketchup.active_model
  start_point = edge.start.position
  end_point = edge.end.position
  if start_point.x < end_point.x 
    pt = start_point
  else
    pt = end_point
  end
  p pt
  

  ## Z Scale 90 degrees
   cpt = compo.transformation.origin 
  xscale = edge.length / 1.m
  tscale = Geom;;Transformation.scaling cpt, xscale, 1, 1
  compo.transform!(tscale) 
  
  
  vector = pt - cpt
  tr = Geom;;Transformation.translation vector
  compo.transform!(tr)
  
end


def insert_Sunshade_Curved
   model = Sketchup.active_model 
   model.start_operation( "Add Component", true)
   selection = model.selection 
   selection.each{|entity|
   sFile = Sketchup.find_support_file "CurtainWall_Architect/Components/Sunshade/Sunshade_Curved.skp", "Plugins"
	  	
     if entity.class == Sketchup;;Edge
	    edge = entity
		line = edge.line #vector of edge
		if (line[1].dot Z_AXIS).abs == 0.0 
		compo = insert_file_skp( sFile, Geom;;Point3d.new(0,0,0), "Sunshade-Curved")
	        move_compo(edge, compo)			
     end 
   
   } 

   model.commit_operation 

end

TIG

Your code inserts an instance at the origin, scales it to the edge.length and moved it to the edge.start.position.

So far so good.

Now in move_compo() you need to find the angle that the edge makes with the X_AXIS.

I am typing this from memory, as I can't test it right now, so please be aware that you might need to spot typos and even flip some logic***

vec = edge.line[1] ang = X_AXIS.angle_between(vec) ang = -ang if X_AXIS.cross(vec).z < 0***

***e.g. it might be > 0 ?

Now rotate the instance about the edge.start.position

trr = Geom::Transformation.rotation(edge.start.position, Z_AXIS, ang) compo.transform!(trr)

That should rotate the instance onto its edge's line...

pingpink

Thank you so much !
I try to solve form your suggestion It's rotate , but not place at the edges.
I don't know why.

require 'sketchup.rb'

def insert_file_skp(sFile, point, sName)

model = Sketchup.active_model
pants_def = model.definitions.load sFile

Then define a location, and place our skp there.

pants_location = point
transform = Geom::Transformation.new pants_location
entities = Sketchup.active_model.active_entities
instance = entities.add_instance pants_def, transform
instance.name= sName
return instance
end

def move_compo(edge, compo)
model = Sketchup.active_model
start_point = edge.start.position
end_point = edge.end.position

#------------- Edit ----------------#
[highlight=#ffff80:1fxmkzqh]vec = edge.line[1]
ang = X_AXIS.angle_between(vec)
ang = -ang if X_AXIS.cross(vec).z < 0[/highlight:1fxmkzqh]
#------------------------------------#
if start_point.x < end_point.x
pt = start_point
else
pt = end_point
end
p pt

cpt = compo.transformation.origin

xscale = edge.length / 1.m
tscale = Geom::Transformation.scaling cpt, xscale, 1, 1
compo.transform!(tscale)

vec = pt - cpt

#------------- Edit ----------------#
[highlight=#ffff80:1fxmkzqh]tr1 = Geom::Transformation.translation vec
tr2 = Geom::Transformation.rotation(edge.start.position, Z_AXIS, ang)

instance1 = compo.transform!(tr1)
instance2 = compo.transform!(tr2)[/highlight:1fxmkzqh]

#------------------------------------#

end

def insert_Sunshade_Curved
model = Sketchup.active_model
model.start_operation( "Add Component", true)
selection = model.selection
selection.each{|entity|
sFile = Sketchup.find_support_file "CurtainWall_Architect/Components/Sunshade/Sunshade_Curved.skp", "Plugins"

 if entity.class == Sketchup::Edge
    edge = entity
	line = edge.line #vector of edge
		
	if (line[1].dot Z_AXIS).abs == 0.0 
		compo = insert_file_skp( sFile, Geom::Point3d.new(0,0,0), "Sunshade-Curved")
       move_compo(edge, compo)
 
	end   

 end

}

model.commit_operation

end

Result

TIG

You want to move the compo that you have initially placed at the ORIGIN to the start of the edge ?
So use
vect = ORIGIN.vector_to(edge.start.position)
Then use that to move it into place [and then do my rotation code...]
tr1 = Geom::Transformation.translation(vect) tr2 = Geom::Transformation.rotation(edge.start.position, Z_AXIS, ang) compo.transform!(tr1) compo.transform!(tr2)

Check my ..z < 0 works... it might need to be ..z > 0 ??

I haven't managed to test any of this

Incidentally, you can combine transformations thus
compo.transform!(tr2*tr1)
once you know it's working right - note the order of the combination * - relocating to a point then rotating about that point, is likely to produce a different result compared to rotating about a point then relocating to that point...

pingpink

Thank you very much , TIG

Finally I can load , scale , and rotate sunshades from your advice !!!

This code works very nice. z < 0 made the components run on the edges.

def move_compo(edge, compo)
model = Sketchup.active_model
start_point = edge.start.position
end_point = edge.end.position

#------------- Edit ----------------#

[highlight=#ffff80:1zu9kjw1]vect = edge.line[1]
ang = X_AXIS.angle_between(vect)
ang = -ang if X_AXIS.cross(vect).z < 0[/highlight:1zu9kjw1]
#------------------------------------#
cpt = compo.transformation.origin

xscale = edge.length / 1.m
tscale = Geom::Transformation.scaling cpt, xscale, 1, 1
compo.transform!(tscale)

vect = ORIGIN.vector_to(edge.start.position)

#------------- Edit ----------------#

[highlight=#ffff80:1zu9kjw1]tr1 = Geom::Transformation.translation(vect)
tr2 = Geom::Transformation.rotation(edge.start.position, Z_AXIS, ang)
compo.transform!(tr2*tr1)[/highlight:1zu9kjw1]

#------------------------------------#

end

TIG

Glad to help.
I guessed at the right 'cross' result - it'd either be .z<0 or .z>0 !

pingpink

I respect you !!! I'm a big fan of you.