Spline Segments

Helper

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 RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 15/01/2003 at 07:55, xxxxxxxx wrote:

User Information:
Cinema 4D Version:   8.012
Platform:
Language(s) :   C.O.F.F.E.E ;

---------
*NEWBIE COFFEE QUESTION*

How do I choose which spline segment it is that i'm affecting in my spline object? like if i want to make a new segment and put a point in it, how would i do this?

Helper

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 RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 16/01/2003 at 17:37, xxxxxxxx wrote:

See SplineObject::GetSegments().

Helper

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 RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED

On 16/01/2003 at 19:24, xxxxxxxx wrote:

i can't seem to get it to work at all... i thought i had... but then it turned out i was wrong.

here's the code for making a spline with four points and two segments, but it doesn't seem to work, it just creates a single spline with 1 segment, and the getsegemtns command always returns 0 with this even when it has 1 segment.

if (!instanceof(op,PointObject)) return FALSE; // Not a point object.

//segment making part

var sc= new(VariableChanged); if (!sc) return FALSE;
var cnt=op->GetSegmentCount();
sc->Init(cnt,2);

var bt = new(BackupTags); if (!bt) return FALSE; // Allocate a BackupTags object.
bt->Init(op); // Backup up 'op'

// Send the message to all tags and keys and let them return
// a boolean, telling us if everything is alright:

var ok = op->MultiMessage(MSG_SEGMENTS_CHANGED,sc);

if (!ok)
          {
           bt->Restore(); // Restore the object if something went wrong
           return FALSE;
          }

var seg=new(array,2);
seg[0]=2;
seg[1]=2;

op->SetSegments(seg);

//end of segment making part

//spline making part

var vc = new(VariableChanged); if (!vc) return FALSE; // Allocate class.

var cnt = op->GetPointCount(); // Get actual point count.
          vc->Init(cnt,4);            // Resize point count from cnt to cnt+1.
                                // Just for adding a point at the end of
                                // the point list one doesn't need a map.

var bt = new(BackupTags); if (!bt) return FALSE; // Allocate a BackupTags object.
bt->Init(op); // Backup up 'op'

// Send the message to all tags and keys and let them return
// a boolean, telling us if everything is alright:

var ok = op->MultiMessage(MSG_POINTS_CHANGED,vc);

if (!ok)
          {
           bt->Restore(); // Restore the object if something went wrong
           return FALSE;
          }

// Now all tags and structures have reacted and resized their
          // memory part, so one can access the new point:

          var pnts=new(array,4);
          pnts[0]=apos;
          pnts[1]=bpos;
          pnts[2]=cpos;
          pnts[3]=dpos;

op->SetPoints(pnts); // Set data p for new point
//end of spline making part
op->Message(MSG_UPDATE); // Notify object of change

i've tried both ways around with the points being made first, and the segmenst second, but i just can't seem to get it to work. apos,bpos,cpos and dpos are the positions of four nulls, and op is the spline.