3d text

jim130

Hi my name is Jim and I’ve come to the Ruby Sketchup forum before and have been helped so much.
As I’ve said before I’m new to Ruby and only get to work on my project in the winter so I’m back.
I’ve tried the Quantum wave function method were you pound your head on the keyboard until the right combination of keys are intersected. But that hasn’t worked. So much for the wave function!

I’ve printed out and read as much of the Ruby Sketchup API as I can find that applies to 3d text and how to get it to the face of an object but have not progressed very much.
I’ve created a program to generate a geodesic and am at the point that I need to identify each triangle with a number on its face as well as two numbers at each vertices. After failing to place 3d text on the face of the triangle I went ahead and use 2d text at the vertices but that does not do what I really need.
I need a 3d text on the surface that I can push pull and have some depth with. As I want to 3d print the form’s for a triangular block for a pizza oven build and each block needs to have its ID embossed into it. Among other things that I want to do with this.
The way I have approached this is that each triangle is created one at a time in a loop. So that each time the triangle needs to gets the appropriate text placed on its face before going out of the loop and coming back and creating the next triangle.

I am creating a bounding box with my text inside a bounding box and some were near the center but two major problems appear.

The feedback on the center and corner numbers on the bounding box are not any wear close to wear they should be and
I’ve tried everything I can think of to turn my text variable “m”, the triangle count number into a variable and Ruby won’t allow it.

I’ll place the code I think you will need so you can see what I am doing and hopefully you can find the errors of my way.

It’s either that or I’m back to the wave function.

Thanks again.
Jim.

Here is the code.

polygon_index = pm.add_polygon([pts_xyz_at_n[0] , pts_xyz_at_n[1] , pts_xyz_at_n[2]] )

  #puts" make triangle #{m}"

  try = []
  try[0] = pts_xyz_at_n[0]
  try[1] = pts_xyz_at_n[1]
  try[2] = pts_xyz_at_n[2]

  entities = mod.active_entities  

  group = Sketchup.active_model.entities.add_group   #Add the group to the entities in the model

  entities = group.entities             # Get the entities within the group

  face = entities.add_face try   # Add a face to within the group

  edges = face.edges

  status = face.reverse!

  normal = face.normal

  puts" The normal of triangle face # #{m} is ? #{normal}"
  
  area = face.area

  puts "The area of triangle # #{m} is  #{area}"
  
 Sketchup.active_model.entities

  model = Sketchup.active_model

  entities = mod.active_entities

  ################# adds 3d text on at 0,0,0 ######################

  group = ent.add_group   # Add the group to the entities in the model

  entities = group.entities   # Get the entities within the group

  boundingbox = model.bounds

  model_bb = model.bounds

  ############## adding 3d text to model ###################
  
  success = entities.add_3d_text( "m", TextAlignLeft, "Arial", is_Bold = 0.0 , is_italic = 0.0,letter_height = 0.025, tolerance = 0.0, z = 0.0, is_filled = true, extrusion = 0.0)

puts " success = #{success}"

  first_entity = model.entities[0] 

  first_entity_bb = first_entity.bounds

  fs_b = first_entity_bb

  puts"first_entity = #{fs_b}"

  boundingbox.empty?

  ptb_1 = boundingbox.center

  puts" boundingbox center = #{ptb_1}"

  corner_ = boundingbox.corner(0)

  puts" boundingbox corner(0) = #{corner_}"

  group.to_component
  
  m  =  m  +  1                    #### incrementing  m

Here is the output.

Points and side length for triangle # 9

Point, # 1 is [3, 3] and has the co ordinance of [0.13238464691208032, 0.2812274564551052, 0.9504658978615464]

Point, # 2 is [4, 2] and has the co ordinance of [6.005807236859207e-17, 0.19473874066922284, 0.9808551487771093]

The length of side 1 of triangle # 9 is between point [3, 3], and point [4, 2], for a length of 0.16102639307745903

Point, # 2 is [4, 2] and has the co ordinance of [6.005807236859207e-17, 0.19473874066922284, 0.9808551487771093]

Point, # 3 is [4, 4] and has the co ordinance of [5.719967031754901e-17, 0.3568220897730899, 0.9341723589627158]

The length of side 2 of triangle # 9 is between point [4, 2], and point [4, 4], for a length of 0.16867215218162387

Point, # 3 is [4, 4] and has the co ordinance of [5.719967031754901e-17, 0.3568220897730899, 0.9341723589627158]

Point, # 1 is [3, 3] and has the co ordinance of [0.13238464691208032, 0.2812274564551052, 0.9504658978615464]

The length of side 3 of triangle # 9 is between point [4, 4], and point [3, 3], for a length of 0.1533157615327414

333 The normal of triangle face # 9 is ? (0.039739, 0.276548, 0.960178)

The area of triangle # 9 is 0.01117362776006554

The bounding box output stuff.

success = true

first_entity = #Geom::BoundingBox:0x00000248a3959ac8

boundingbox center = (0", 0", 0.079675")

boundingbox corner(0) (-0.850651", -0.850651", -0.850651")

number of triangles = 10

Frequency = 8

Radius = 1.0

I think I can get the text to the face if I can just get the bounding box right and its cooridnates.

screen shot