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On 03/01/2009 at 23:35, xxxxxxxx wrote:
Cinema 4D Version: 11
Platform: Windows ;
Language(s) : C++ ;
I'm trying to set up a tag link field to accept only bezier splines.
I can limit it to point splines by either specifying Ospline in the res file or using DescriptionCheckDragAndDrop with
> dcu->result = dcu->element->GetNodeID() == 0;
Does anyone know how to refine this down to bezier splines specifically?
dcu->result = dcu->element->GetNodeID() == 0;
On 04/01/2009 at 09:21, xxxxxxxx wrote:
Since there is no 'bezier' spline object as it is a setting not a type, first verify that the object type is spline (you should be using: op->GetInfo()&OBJECT;_ISSPLINE). Then you'll have to get the type setting (SPLINEOBJECT_TYPE) from it using its BaseContainer or GetParameter() and accept/decline the drag-n-drop accordingly. The setting types are described in resource/res/description/ospline.res.
On 04/01/2009 at 14:09, xxxxxxxx wrote:
Thanks for your help, this worked a treat.
I actually started with GetInfo() & OBJECT_ISSPLINE as per the SDK example before taking a wrong turn.
Here's the working code:
> dcu->result = dcu->element->GetInfo() & OBJECT_ISSPLINE; \> dcu->element->GetParameter(SPLINEOBJECT_TYPE, splineSetting, 0); \> dcu->result = splineSetting == SPLINEOBJECT_TYPE_BEZIER;
dcu->result = dcu->element->GetInfo() & OBJECT_ISSPLINE; \> dcu->element->GetParameter(SPLINEOBJECT_TYPE, splineSetting, 0); \> dcu->result = splineSetting == SPLINEOBJECT_TYPE_BEZIER;
On 04/01/2009 at 16:09, xxxxxxxx wrote:
I'd do the final line this way:
dcu->result = dcu->result && (splineSetting == SPLINEOBJECT_TYPE_BEZIER);
This will guarantee that the object is a SplineObject and using a Bezier setting. SPLINEOBJECT_TYPE could return a random value from another object type using the same description id value for another parameter.
On 04/01/2009 at 17:17, xxxxxxxx wrote:
Good point, I've updated the code. Cast-iron underpants are always prudent.
Thanks again for your help.