Add_face from edges??

wawmsey7

Hi, I'm pretty new to ruby coding in sketchup so i'm just trying to get my head around a few bits of basic code. I'm trying to make a face from two straight edges and a curve.... the edges are drawing fine but i'm getting an error when I try to make a face from the edges??

this is my code atm...

%(#004080)[radius =10
startangle =90.degrees
endangle =0.degrees

centerpoint = Geom::Point3d.new
vector = [0,0,1]
vector2 = [1,0,0]
vector3 = vector.normalize!
model = Sketchup.active_model
entities = model.active_entities
curve = entities.add_arc centerpoint, vector2, vector3, radius, endangle, startangle

edge1 = entities.add_edges [0,0,0],[0,radius,0]
edge2 = entities.add_edges [0,0,0], [radius,0,0]
face = entities.add_face (edge1,curve,edge2)]

In the API documentation it says I should be able to make a face from a bunch of edges...

%(#0000BF)[entities.add_face(edge1, edge2, edge3, ...)
entities.add_face(edgearray)
entities.add_face(pt1, pt2, pt3, ...)
entities.add_face([pt1, pt2, pt3,...])
entities.add_face(curve)]

Does anyone know why this won't work?

Thanks in advance

Matt

sdmitch

@wawmsey7 said:

Hi, I'm pretty new to ruby coding in sketchup so i'm just trying to get my head around a few bits of basic code. I'm trying to make a face from two straight edges and a curve.... the edges are drawing fine but i'm getting an error when I try to make a face from the edges??

this is my code atm...

%(#004080)[

radius =10
> startangle =90.degrees
> endangle =0.degrees
> 
> centerpoint = Geom;;Point3d.new
>  vector =  [0,0,1]
>  vector2 =  [1,0,0]
>  vector3 = vector.normalize!
>  model = Sketchup.active_model
>  entities = model.active_entities
>  curve = entities.add_arc centerpoint, vector2, vector3, radius, endangle, startangle
> 
> edge1 = entities.add_edges [0,0,0],[0,radius,0]
> edge2 = entities.add_edges [0,0,0], [radius,0,0]
> face = entities.add_face (edge1,curve,edge2)

]

In the API documentation it says I should be able to make a face from a bunch of edges...

%(#0000BF)[entities.add_face(edge1, edge2, edge3, ...)
entities.add_face(edgearray)
entities.add_face(pt1, pt2, pt3, ...)
entities.add_face([pt1, pt2, pt3,...])
entities.add_face(curve)]

Does anyone know why this won't work?

Thanks in advance

Matt

The problem is that you have a mixture of edges and an edge array. It will work if you combine them into a single array

face = entities.add_face (edge1+curve+edge2)

For future reference, always use a code block to simplify the selecting and copying.

wawmsey7

thanks for your quick response, that worked perfectly!

Dan Rathbun

You should also be able to use Ruby's parameter expansion operator *.
It expands arrays into parameter lists:

face = entities.add_face(edge1,*curve,edge2)

Also, do not put a space between the method name and the opening parenthesis when making method calls. (Ruby 2.0 will generate an error, whereas Ruby 1.8 just spit out a warning.)

wawmsey7

Thanks.

Just another quick one...

I'm also struggling to make a simple rotation on an edge

my code atm is...

 model = Sketchup.active_model
 entities = model.active_entities
edge1 = entities.add_edges [0,0,0], [0,10,0]

tr = Geom;;Transformation.rotation([0,0,0],[0,1,0],40.degrees)
edge1.transform!(tr)

again the edge draws fine but my rotation code throws up an error!

anyone got any ideas?

Thanks again
Matt

sdmitch

@wawmsey7 said:

Thanks.

Just another quick one...

I'm also struggling to make a simple rotation on an edge

my code atm is...

 model = Sketchup.active_model
>  entities = model.active_entities
> edge1 = entities.add_edges [0,0,0], [0,10,0]
> 
> tr = Geom;;Transformation.rotation([0,0,0],[0,1,0],40.degrees)
> edge1.transform!(tr)
>

again the edge draws fine but my rotation code throws up an error!

anyone got any ideas?

Thanks again
Matt

rotation of an edge on the Y axis around the Y axis makes no sense.

.transform! is for groups,components,vectors,points,etc. but not edges.

model = Sketchup.active_model
entities = model.active_entities
edge1 = entities.add_edges [0,0,0], [0,10,0]
#tr = Geom;;Transformation.rotation([0,0,0],[0,1,0],40.degrees)#rotation around Y axis?
tr = Geom;;Transformation.rotation([0,0,0],[0,0,1],40.degrees)
#edge1.transform!(tr)#transform! not allowed for edge.
entities.transform_entities(tr,edge1)

wawmsey7

thanks again for your help - that makes a lot more sense!

Dan Rathbun

@wawmsey7 said:


> edge1.transform!(tr)
>

again the edge draws fine but my rotation code throws up an error!

Matt, have the Ruby Console open when testing code, and paste the error message in the post, if your asking about Ruby errors.

The first error message line in the backtrace will contain a sub-string like:
“filename:lineNo: inmethod'”or “filename:lineNo.”`
which tells you exactly what ruby script, it's line number, and possibly the method that it occurred within.

The message tells you (usually) exactly what went wrong.
For example,
Error: #<NoMethodError: undefined methodtransform!' for #Sketchup::Edge:0x00000009e8e690>... tells you that the Sketchup::Edge class has no instance method named " transform!`".

So at that point your quickest way to resolve your dilemma, is to go to the API's Method index, and find methods in the "T" category that have to do with transformations.

See Exception class, backtrace() method.

And more generally dealing with exceptions.