Topic: How to divide by increment between paramaters

[estanima]

Could use a hand with this.  I need to place circles on polyline segments at 5-ft increments between the vertices (parameters). Having a difficult time.  Additionally, the circles can't be within 5-ft of any parameter.  Here's a very bad start (basically junk) that doesn't do what I want. I keep fumbling around so thought I'd ask here for help (sorted is the number of parameters in the polyline):

Code: [Select]

for (int i = 0; i < sorted.Count - 1; i++) //minus 1 so it doesn't fail on last parameter
                        {
                            Point3d parampoint = temppoly.GetPointAtParameter(i);
                            Point3d afterpoint = temppoly.GetPointAtParameter(i + 1);
                            double distance = parampoint.DistanceTo(afterpoint);
                            if (distance > 5.1 && (distance + 5.1) < temppoly.GetDistanceAtParameter(i + 1))
                            {
                                Circle cr = new Circle(temppoly.GetPointAtDist(temppoly.GetDistanceAtParameter(i) + 5), Vector3d.ZAxis, 1.0);
                                acBlkTblRec.AppendEntity(cr);
                                MyTrans.AddNewlyCreatedDBObject(cr, true);
                            }
                        }
Thanks everyone, appreciate your help.

[Jeff_M]

Something like this should do it.

Code - C#: [Select]

1.                     for (int i = 0; i < poly.EndParam; i++)
2.                     {
3.                         var len = 5.0;
4.                         var startlen = poly.GetDistanceAtParameter(i);
5.                         var endlen = poly.GetDistanceAtParameter(i + 1);
6.                         while ((startlen += len) < (endlen - 5.0))
7.                         {
8.                             var pt = poly.GetPointAtDist(startlen);
9.                             Circle cr = new Circle(pt, Vector3d.ZAxis, 1.0);
10.                             acBlkTblRec.AppendEntity(cr);
11.                             MyTrans.AddNewlyCreatedDBObject(cr, true);
12.                         }
13.                    }
14.  

[estanima]

Flawless, thank you.  Seeing your code made it look so easy    

Something like this should do it.

Code - C#: [Select]

1.                     for (int i = 0; i < poly.EndParam; i++)
2.                     {
3.                         var len = 5.0;
4.                         var startlen = poly.GetDistanceAtParameter(i);
5.                         var endlen = poly.GetDistanceAtParameter(i + 1);
6.                         while ((startlen += len) < (endlen - 5.0))
7.                         {
8.                             var pt = poly.GetPointAtDist(startlen);
9.                             Circle cr = new Circle(pt, Vector3d.ZAxis, 1.0);
10.                             acBlkTblRec.AppendEntity(cr);
11.                             MyTrans.AddNewlyCreatedDBObject(cr, true);
12.                         }
13.                    }
14.