void Path::sample(int numSamples, QList<EdgeSample> & out) const { assert(isValid()); out.clear(); if(type() == SingleVertex) { Eigen::Vector2d pos = singleVertex()->pos(); EdgeSample posSample(pos[0],pos[1],0); for(int i=0; i<numSamples; ++i) out << posSample; } else { assert(numSamples >= 2); double ds = length()/(numSamples-1); double cumulativeLength = 0; int indexHe = 0; KeyHalfedge he = halfedges_[indexHe]; for(int i=0; i<numSamples; ++i) { double s = i*ds; while ( (s > cumulativeLength + he.length()) && (indexHe+1 < halfedges_.size()) ) { cumulativeLength += he.length(); he = halfedges_[++indexHe]; } out << he.sample(s-cumulativeLength); } } }
void Cycle::sample(int numSamples, QList<EdgeSample> & out) const { assert(isValid()); out.clear(); if(type() == SingleVertex) { Eigen::Vector2d pos = singleVertex()->pos(); EdgeSample posSample(pos[0],pos[1],0); for(int i=0; i<numSamples; ++i) out << posSample; } else { QList<EdgeSample> outAux; assert(numSamples >= 2); double l = length(); double ds = l/(numSamples-1); // Computing unoffset cycle double cumulativeLength = 0; int indexHe = 0; KeyHalfedge he = halfedges_[indexHe]; for(int i=0; i<numSamples; ++i) { double s = i*ds; while ( (s > cumulativeLength + he.length()) && (indexHe+1 < halfedges_.size()) ) { cumulativeLength += he.length(); he = halfedges_[++indexHe]; } outAux << he.sample(s-cumulativeLength); } // Apply offset int i0 = std::floor( numSamples * s0_ + 0.5); if(i0 < 0) i0 = 0; if(i0 > numSamples - 1) i0 = numSamples - 1; for(int i=i0; i<numSamples; ++i) out << outAux[i]; for(int i=0; i<i0; ++i) out << outAux[i]; } }
bool AlembicCurves::Save(double time, bool bLastFrame) { ESS_PROFILE_FUNC(); //TimeValue ticks = GET_MAX_INTERFACE()->GetTime(); TimeValue ticks = GetTimeValueFromFrame(time); Object *obj = mMaxNode->EvalWorldState(ticks).obj; if(mNumSamples == 0){ bForever = CheckIfObjIsValidForever(obj, ticks); } else{ bool bNewForever = CheckIfObjIsValidForever(obj, ticks); if(bForever && bNewForever != bForever){ ESS_LOG_INFO( "bForever has changed" ); } } SaveMetaData(mMaxNode, this); // check if the spline is animated if(mNumSamples > 0) { if(bForever) { return true; } } AbcG::OCurvesSchema::Sample curvesSample; std::vector<AbcA::int32_t> nbVertices; std::vector<Point3> vertices; std::vector<float> knotVector; std::vector<Abc::uint16_t> orders; if(obj->ClassID() == EDITABLE_SURF_CLASS_ID){ NURBSSet nurbsSet; BOOL success = GetNURBSSet(obj, ticks, nurbsSet, TRUE); AbcG::CurvePeriodicity cPeriod = AbcG::kNonPeriodic; AbcG::CurveType cType = AbcG::kCubic; AbcG::BasisType cBasis = AbcG::kNoBasis; int n = nurbsSet.GetNumObjects(); for(int i=0; i<n; i++){ NURBSObject* pObject = nurbsSet.GetNURBSObject((int)i); //NURBSType type = pObject->GetType(); if(!pObject){ continue; } if( pObject->GetKind() == kNURBSCurve ){ NURBSCurve* pNurbsCurve = (NURBSCurve*)pObject; int degree; int numCVs; NURBSCVTab cvs; int numKnots; NURBSKnotTab knots; pNurbsCurve->GetNURBSData(ticks, degree, numCVs, cvs, numKnots, knots); orders.push_back(degree+1); const int cvsCount = cvs.Count(); const int knotCount = knots.Count(); for(int j=0; j<cvs.Count(); j++){ NURBSControlVertex cv = cvs[j]; double x, y, z; cv.GetPosition(ticks, x, y, z); vertices.push_back( Point3((float)x, (float)y, (float)z) ); } nbVertices.push_back(cvsCount); //skip the first and last entry because Maya and XSI use this format for(int j=1; j<knots.Count()-1; j++){ knotVector.push_back((float)knots[j]); } if(i == 0){ if(pNurbsCurve->IsClosed()){ cPeriod = AbcG::kPeriodic; } } else{ if(pNurbsCurve->IsClosed()){ if(cPeriod != AbcG::kPeriodic){ ESS_LOG_WARNING("Mixed curve wrap types not supported."); } } else{ if(cPeriod != AbcG::kNonPeriodic){ ESS_LOG_WARNING("Mixed curve wrap types not supported."); } } } } } curvesSample.setType(cType); curvesSample.setWrap(cPeriod); curvesSample.setBasis(cBasis); } else { BezierShape beziershape; PolyShape polyShape; bool bBezier = false; // Get a pointer to the spline shpae ShapeObject *pShapeObject = NULL; if (obj->IsShapeObject()) { pShapeObject = reinterpret_cast<ShapeObject *>(obj); } else { return false; } // Determine if we are a bezier shape if (pShapeObject->CanMakeBezier()) { pShapeObject->MakeBezier(ticks, beziershape); bBezier = true; } else { pShapeObject->MakePolyShape(ticks, polyShape); bBezier = false; } // Get the control points //std::vector<Point3> inTangents; //std::vector<Point3> outTangents; if (bBezier) { int oldVerticesCount = (int)vertices.size(); for (int i = 0; i < beziershape.SplineCount(); i += 1) { Spline3D *pSpline = beziershape.GetSpline(i); int knots = pSpline->KnotCount(); for(int ix = 0; ix < knots; ++ix) { Point3 in = pSpline->GetInVec(ix); Point3 p = pSpline->GetKnotPoint(ix); Point3 out = pSpline->GetOutVec(ix); vertices.push_back( p ); //inTangents.push_back( in ); //outTangents.push_back( out ); } int nNumVerticesAdded = (int)vertices.size() - oldVerticesCount; nbVertices.push_back( nNumVerticesAdded ); oldVerticesCount = (int)vertices.size(); } } else { for (int i = 0; i < polyShape.numLines; i += 1) { PolyLine &refLine = polyShape.lines[i]; nbVertices.push_back(refLine.numPts); for (int j = 0; j < refLine.numPts; j += 1) { Point3 p = refLine.pts[j].p; vertices.push_back(p); } } } // set the type + wrapping curvesSample.setType(bBezier ? AbcG::kCubic : AbcG::kLinear); curvesSample.setWrap(pShapeObject->CurveClosed(ticks, 0) ? AbcG::kPeriodic : AbcG::kNonPeriodic); curvesSample.setBasis(AbcG::kNoBasis); } if(nbVertices.size() == 0 || vertices.size() == 0){ ESS_LOG_WARNING("No curve data to export."); return false; } const int vertCount = (int)vertices.size(); // prepare the bounding box Abc::Box3d bbox; // allocate the points and normals std::vector<Abc::V3f> posVec(vertCount); Matrix3 wm = mMaxNode->GetObjTMAfterWSM(ticks); for(int i=0;i<vertCount;i++) { posVec[i] = ConvertMaxPointToAlembicPoint(vertices[i] ); bbox.extendBy(posVec[i]); // Set the archive bounding box if (mJob) { Point3 worldMaxPoint = wm * vertices[i]; Abc::V3f alembicWorldPoint = ConvertMaxPointToAlembicPoint(worldMaxPoint); mJob->GetArchiveBBox().extendBy(alembicWorldPoint); } } if(knotVector.size() > 0 && orders.size() > 0){ if(!mKnotVectorProperty.valid()){ mKnotVectorProperty = Abc::OFloatArrayProperty(mCurvesSchema.getArbGeomParams(), ".knot_vector", mCurvesSchema.getMetaData(), mJob->GetAnimatedTs() ); } mKnotVectorProperty.set(Abc::FloatArraySample(knotVector)); if(!mOrdersProperty.valid()){ mOrdersProperty = Abc::OUInt16ArrayProperty(mCurvesSchema.getArbGeomParams(), ".orders", mCurvesSchema.getMetaData(), mJob->GetAnimatedTs() ); } mOrdersProperty.set(Abc::UInt16ArraySample(orders)); } // store the bbox curvesSample.setSelfBounds(bbox); mCurvesSchema.getChildBoundsProperty().set(bbox); Abc::Int32ArraySample nbVerticesSample(&nbVertices.front(),nbVertices.size()); curvesSample.setCurvesNumVertices(nbVerticesSample); // allocate for the points and normals Abc::P3fArraySample posSample(&posVec.front(),posVec.size()); curvesSample.setPositions(posSample); mCurvesSchema.set(curvesSample); mNumSamples++; return true; }