Animation position/rotation using Python
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THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED
On 15/01/2011 at 14:27, xxxxxxxx wrote:
User Information:
Cinema 4D Version: 12
Platform: Windows ;
Language(s) : PYTHON ;---------
New to C4D but very experienced elsewhere. I'm trying to animate objects' position and rotation through the python API. I'll have to animate some other things eventually too. I tried using the typical approach of document.SetTime and SetAbsPos, but that didn't seem to have any effect. Is there a recording flag that needs to be turned on? Or are CTrack and CKey supposed to be used---but how? I see some forum posts relating to this involving DescIDs, where is the (meaningful) documentation for this? (in any programming language) Can switch to COFFEE if really necessary, but C++ is unacceptable for this application. Thanks. -
THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED
On 15/01/2011 at 20:28, xxxxxxxx wrote:
Well, I can show you the code I use to rotate my planet objects in PXG. It is using C++ but it might help you with Python.
//ROTATE PLANET //====================================================// Bool PlanetXObject::RotatePlanet(BaseObject *op, GeListNode* node){ if (!op) return FALSE; BaseContainer *bc = ((BaseList2D* )node)->GetDataInstance(); if (!bc) return FALSE; BaseDocument *doc = op->GetDocument(); if(!doc) return FALSE; BaseTime time = doc->GetTime(); Real fps = doc->GetFps(); //Rotation Track Vector DescID idRotX = DescID(DescLevel(ID_BASEOBJECT_REL_ROTATION,DTYPE_VECTOR,0),DescLevel(VECTOR_X,DTYPE_REAL,0)); //Planet COUNTER CLOCKWISE Rotation //==========================================// if (bc->GetBool(PLANETX_GENERAL_ENABLE_ROTATION) && bc->GetBool(PLANETX_GENERAL_ROTATION_DIRECTION) == PLANETX_GENERAL_ROTATION_COUNTER_CLOCKWISE){ //Remove Existing Track //==========================================// if (op->FindCTrack(idRotX)){ op->FindCTrack(idRotX)->Remove(); } //Insert the New Track //==========================================// CTrack *track = op->FindCTrack(idRotX); if (!track){ track = CTrack::Alloc(op,idRotX); if (!track) return FALSE; op->InsertTrackSorted(track); } //Get the Base Time //==========================================// BaseTime bstime = time; //Set the Frame Rate (FPS) //==========================================// bstime.SetDenominator(fps); Real deNomin; deNomin = (60 *fps) / bc->GetReal(PLANETX_GENERAL_ROTATION_SPEED); //First Key will be set at 0 //==========================================// bstime.SetNumerator(0); CKey *keyH = track->GetCurve()->AddKey(bstime,0); if (!keyH) return false; keyH->SetValue(track->GetCurve(),0); //Set Position to 0 //Second Key will be placed at deNomin //==========================================// bstime.SetNumerator(deNomin); CKey *keyH2 = track->GetCurve()->AddKey(bstime,0); if (!keyH2) return false; keyH2->SetValue(track->GetCurve(),6.283185307); //Set Position to 360 track->SetAfter(CLOOP_REPEAT); } //Planet CLOCKWISE Rotation //==========================================// else if (bc->GetBool(PLANETX_GENERAL_ENABLE_ROTATION) && bc->GetBool(PLANETX_GENERAL_ROTATION_DIRECTION) == PLANETX_GENERAL_ROTATION_CLOCKWISE) { //Remove Existing Track //==========================================// if (op->FindCTrack(idRotX)) { op->FindCTrack(idRotX)->Remove(); } //Insert the New Track //==========================================// CTrack *track = op->FindCTrack(idRotX); if (!track) { track = CTrack::Alloc(op,idRotX); if (!track) return FALSE; op->InsertTrackSorted(track); } //Get the Base Time //==========================================// BaseTime bstime = time; //Set the Frame Rate (FPS) //========================================================================== bstime.SetDenominator(fps); Real deNomin; deNomin = (60 *fps) / bc->GetReal(PLANETX_GENERAL_ROTATION_SPEED); //First Key will be set at 0 //========================================================================== bstime.SetNumerator(0); CKey *keyH = track->GetCurve()->AddKey(bstime,0); if (!keyH) return false; keyH->SetValue(track->GetCurve(),6.283185307); //Set Position to 360 //Second Key will be placed at 3 times the location of the frame rate //(i.e. if FPS is set to 30, then the key will be placed at frame 45. //========================================================================== bstime.SetNumerator(deNomin); CKey *keyH2 = track->GetCurve()->AddKey(bstime,0); if (!keyH2) return false; keyH2->SetValue(track->GetCurve(),0); //Set Position to 0 track->SetAfter(CLOOP_REPEAT); } else { //If the track exists remove it! if (op->FindCTrack(idRotX)) { op->FindCTrack(idRotX)->Remove(); } } return TRUE; }Hope that helps you.
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THE POST BELOW IS MORE THAN 5 YEARS OLD. RELATED SUPPORT INFORMATION MIGHT BE OUTDATED OR DEPRECATED
On 20/01/2011 at 23:26, xxxxxxxx wrote:
This will show you the very basics:
import c4d obj = op.GetObject() def main() : t = doc.GetTime().Get() pos = c4d.Vector(0,t*100, 0) rot = c4d.Vector(0,t,0) obj.SetAbsPos(pos) obj.SetAbsRot(rot)