Setting Mograph Tracer Properties
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Dear friends,
I'm wanting to generate a large number of splines to animate their form and shape.
I'd like to do this with code so I have point-level control over all splines.
I have been able to create the tracer object and connect to 3 nulls.
However I can't see how I can set other properties such as the spline Type [Linear, Cubic...] and the Intermediate Points property.
Many thanks
Andy
I'm an artist but can program a little.
def main(): # Create a MoGraph Tracer object tracer = c4d.BaseObject(1018655) # Insert the Tracer object into the document doc.InsertObject(tracer) # Create a cube to trace null_1 = c4d.BaseObject(c4d.Onull) null_2 = c4d.BaseObject(c4d.Onull) null_3 = c4d.BaseObject(c4d.Onull) null_1.SetName("pt1"); null_2.SetName("pt2"); null_3.SetName("pt3"); newPos = c4d.Vector(100, 100, 0) null_1.SetRelPos(newPos); newPos = c4d.Vector(100, 200, 0) null_3.SetRelPos(newPos); # Insert the cube into the document doc.InsertObject(null_1) doc.InsertObject(null_2) doc.InsertObject(null_3) # Create an InExcludeData object and add the null objects to it in_ex_data = c4d.InExcludeData() in_ex_data.InsertObject(null_1, 1) in_ex_data.InsertObject(null_2, 1) in_ex_data.InsertObject(null_3, 1) tracer[c4d.MGTRACEROBJECT_OBJECTLIST] = in_ex_data tracer[c4d.MGTRACEROBJECT_MODE] = c4d.MGTRACEROBJECT_MODE_LINK c4d.EventAdd() # Execute main() if __name__=='__main__': main()
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Hello @Dextrose,
Welcome to the Plugin Café forum and the Cinema 4D development community, it is great to have you with us!
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About your First Question
The type of a spline is stored under the parameter
c4d.SPLINEOBJECT_TYPE
. So, changing the mode to cubic would bemySpline[c4d.SPLINEOBJECT_TYPE] = c4d.SPLINETYPE_CUBIC
. Helpful might also be the following resources.- Spline Object Ressource: The parameter symbols for
SplineObject
in our parsed resources, you can just look up most scene elements and their symbols in this manner. The easiest way to use this is to combine it with the drag and drop feature. First drag and drop a parameter of the scene element you are interested in into the console. E.g., we discoverSPLINEOBJECT_TYPE
in this example, and then search for this symbol in the docs t find the associated description resource. - Spline Types: An overview of the spline types, this page is linked on the SplineObject itself.
- Console Parameter Drag and Drop: Describes how to find out the symbols of parameters with the console. This is very handy to find out field symbols, but one cannot discover field value symbols - only their numeric value. So, we can discover
SPLINEOBJECT_TYPE
in this manner, but notSPLINETYPE_CUBIC
, all we will see in the console is1
, the numeric value ofSPLINETYPE_CUBIC
. - geometry_splineobject_s26.py: The Python code example for the
SplineObject
which goes most features of the type, including interpolation types.
Cheers,
Ferdinand -
Dear Ferdinand,
Thank you so much. I've found it tricky to navigate the API reference. Being able to get a pointer to the object parameter through drag and drop is a game changer for me!!