[Closed] How to write on this plugin for naming edges?

No persistent globals were harmed when writing this snippet:

try destroyDialog name_edge catch()
rollout name_edge "Name Edge"
(
	struct edgeInfo (name, v1, v2, pos = (v1 + v2)/2)
	local edges = #()

	fn isPoly obj = isKindOf obj Editable_Poly

	edittext name "Name: "
	pickbutton pick "NONE" autoDisplay:true filter:isPoly

	on pick picked it do
	(
		if name.text.count < 1 do
			return messageBox "Edge name cannot be empty"
		if pick.object == undefined do
			return messageBox "No object selected"
		if pick.object.selectedEdges.count != 1 do
			return messageBox "Exactly one edge has to be selected"

		local verts = polyop.getEdgeVerts pick.object pick.object.selectedEdges[1].index

		append edges (edgeInfo name:name.text v1:(polyop.getVert pick.object verts[1]) v2:((polyop.getVert pick.object verts[2])))
	)
)
createDialog name_edge

Take it as a starting point, study maxscript reference and always test your assumptions.

You want to write the exporter part in c++? Anyway, wouldn’t a custom format be a better choice for you? Or how do you import the information and what does it represent anyway?

How do I call this function?

 Value*
 globalVars_get_cf(Value** arg_list, int count)
 {
 	// globalVars.get <global_name>
 	check_arg_count(globalVars.get, 1, count);
 	Value* glob_name = Name::intern(arg_list[0]->to_string());
 	GlobalThunk* t = (GlobalThunk*)globals->get(glob_name);
 	if (!t)
 		throw RuntimeError (MaxSDK::GetResourceStringAsMSTR(IDS_NO_SUCH_GLOBAL), glob_name);
 	return t->eval();
 }
 

There is a global variable called globalVars, or I will have to make one?
I believe I need to get a variable called edge_name, do I do this
MCHAR *name = globalVars.get(“edge_name”);
Can anyone verify this?
Thanks
Jack

As we are talking about naming each edge individually, the source data probably are not overly complex so you can do the whole thing using MAXScript. You still haven’t indicated what does the edge represent in the target format, a single object, part of a mesh geometry (if that’s the case, how would you like to include the names?) or what kind of import process does it go through.

I’d like to do something like this in my application

D3DXVECTOR3 xyz = mWarehouse->GetEdge("Dock_Leveler_Edge")->GetVector3();

mLorry->SetPos(xyz + D3DXVECTOR3(0, 0, rearMove * numrearMoves);

Hope this makes sense

I decided to do it the hard way because of copyright protection and ease of development. I am more keen on C++.

See below I have
Edge_Transform =
How do I get the transformation of an edge?

  try destroyDialog name_edge catch()
  rollout name_edge "Name Edge"
  (
  	struct edgeInfo (name, v1, v2, pos = (v1 + v2)/2)
  	local edges = #()
  
  	fn isPoly obj = isKindOf obj Editable_Poly
  
  	persistent global Edge_Name
  	persistent global Edge_Transform
  	edittext name "Name: "
  	pickbutton pick "NONE" autoDisplay:true filter:isPoly
  
  	on pick picked it do
  	(
  		if name.text.count < 1 do
  			return messageBox "Edge name cannot be empty"
  		if pick.object == undefined do
  			return messageBox "No object selected"
  		if pick.object.selectedEdges.count != 1 do
  			return messageBox "Exactly one edge has to be selected"
  
  		local verts = polyop.getEdgeVerts pick.object pick.object.selectedEdges[1].index
  
  		append edges (edgeInfo name:name.text v1:(polyop.getVert pick.object verts[1]) v2:((polyop.getVert pick.object verts[2])))
  		
  		Edge_Name = name;
  		Edge_Transform =  
  		
  	)
  )
  createDialog name_edge
  

cpp code

  
  define_system_global("Edge_Name", get_Edge_Name, set_Edge_Name);   

define_system_global("Edge_Transform", get_Edge_Point3, 
  set_Edge_Point3); 
  
 Value *Temp3;
 
 void SetEdgePoint3(Point3 vec)
 {
 	 
 }
 
 
 
 Value* get_Edge_Point3()
 {
    return Temp3; 
 
 }
  
 Value* set_Edge_Point3(Value* val)
 {
 	SetEdgePoint3(val->to_point3());
 	return val;
 }
 
 void SetEdgeName(MCHAR* name)
 {
 }
 
  
 Value* get_Edge_Name()
 {
 	return NULL;
 }
  
 Value* set_Edge_Name(Value* val)
 {
 	SetEdgeName(val->to_string());
 	return val;
 }
 
 

Obviously, Temp3 is a NULL which would cause problem here
Let me know
Thanks
Jack

Well, do as you want; anyway, Edge_Name = name; should definitely be Edge_Name = name.text and Edge_Transform = … well, that depends, what kind of input do you expect? As it’s Point3 value, it cannot be a transformation matrix, so it’s either edge direction vector or the middle point (or maybe starting point? it’s hard to guess it).

Edges don’t have a position; you can do what I did in the snippet which is getting the position half-way between vertex1 and vertex2 of the edge or anything that suits your needs.

don’t know why it fails

	local v1 = polyop.getVert pick.Object verts[1]
		local v2 = polyop.getVert pick.Object verts[2]
		
		Edge_Name = name
		local proj = abs (v1.pos - v2.pos)
		local Largest = 1
		
		if (proj.y > proj.x) then
		   Largest = 2
		
		if (proj.z > Largest) then
		   Largest = 3
				   
		
		if (Largest == 1)  then
		  -- x is discarded
		  Edge_Point3.pos.x = 0
		  Edge_Point3.pos.y = projy
		  Edge_Point3.pos.z = projz
		  
		if (Largest == 2) then
		  -- y is discarded
		  Edge_Point3.pos.x = projx
		  Edge_Point3.pos.y = 0
		  Edge_Point3.pos.z = projz
		  
		if (Largest == 3) then
		  -- z is discarded
		  Edge_Point3.pos.x = projx
		  Edge_Point3.pos.y = projy
		  Edge_Point3.pos.z = 0
		   
		MessageBox (Edge_Point3)