Pointcount of TpolySelection?

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 10/02/2012 at 01:55, xxxxxxxx wrote:

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Hi,
I am trying to get the pointscount of a polygonselection, which is stored in a polygonselectionTag.
I tried

int points = op->GetTagDataCount(Tpoint);

before that i set the selection tag as active. All i get is the full amount of points from the Object. If i use a Cube it gives me 8 Points becuase a Cube got only 8. But the right value would be 4 if i've selected only one face.
I need the pointcount to set a weightmap. If I am not mistaken i can make weightmap for my joints with the function "setWeightMap(Joint_index,map(float number),Pointcount)
So the Question is do I have to use this way:

BaseDocument *doc = GetActiveDocument();
    BaseObject *obj = doc->GetActiveObject();   
    PolygonObject *pobj = ToPoly(obj);        
  
    AutoAlloc<SelectionTag> st(Tpolygonselection); 
  
   
  if(newpolytag->GetType() &Tpolygonselection)
    {
      BaseSelect *select= static_cast<SelectionTag*>(newpolytag)->GetBaseSelect(); 
      sel->CopyTo(select);      
    }
LONG count = pobj->GetPolygonCount();

To work my way through the number of points? Or is there an easier way, to get the points amount of the selection?

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 10/02/2012 at 04:32, xxxxxxxx wrote:

You need to convert your polygon selection into a point selection. Take a look at the SelectionChanger class.

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 10/02/2012 at 04:59, xxxxxxxx wrote:

hm ok since this only converts it into a pointselection. So I've to convert it afterwards into a pointObject. And then get the pointscount();

The other thing what make me wonder is how to set the weight map on those points in the pointselection area.

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 10/02/2012 at 05:52, xxxxxxxx wrote:

Once you've got the point selection

I think you can do the rest by

count = obj.GetPointS().GetCount()

Helper

THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 10/02/2012 at 05:58, xxxxxxxx wrote:

Originally posted by xxxxxxxx

hm ok since this only converts it into a pointselection. So I've to convert it afterwards into a pointObject. And then get the pointscount();

Once you have a BaseSelect returned by the SelectionChanger, just do BaseSelect::GetCount(). To access those points, of course you will need to get the object's points array. You can use:

  
Vector *padr = ToPoint(yourobject)->GetPointR();

The SDK docs for BaseSelect shows you how to get the selected points (look for BaseSelect::IsSelected())

Steve