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| typedef struct MR_FlowAggregator MR_FlowAggregator | 
this class can track multiple flows and find in each mesh vertex the amount of water reached it Generated from class MR::FlowAggregator. 
| typedef struct MR_FlowAggregator_Flows MR_FlowAggregator_Flows | 
Generated from class MR::FlowAggregator::Flows. 
| typedef struct MR_FlowOrigin MR_FlowOrigin | 
Generated from class MR::FlowOrigin. 
| typedef struct MR_MeshTriPoint MR_MeshTriPoint | 
| typedef struct MR_OutputFlows MR_OutputFlows | 
Generated from class MR::OutputFlows. 
| typedef struct MR_phmap_flat_hash_map_MR_VertId_MR_FlowAggregator_Flows MR_phmap_flat_hash_map_MR_VertId_MR_FlowAggregator_Flows | 
| typedef struct MR_Polyline3 MR_Polyline3 | 
| typedef struct MR_std_function_const_MR_FaceBitSet_ptr_from_uint64_t MR_std_function_const_MR_FaceBitSet_ptr_from_uint64_t | 
| typedef struct MR_std_function_MR_MeshTriPoint_from_uint64_t MR_std_function_MR_MeshTriPoint_from_uint64_t | 
| typedef struct MR_std_vector_MR_FlowOrigin MR_std_vector_MR_FlowOrigin | 
| typedef struct MR_std_vector_MR_MeshTriPoint MR_std_vector_MR_MeshTriPoint | 
| typedef struct MR_UndirectedEdgeBitSet MR_UndirectedEdgeBitSet | 
| typedef struct MR_UndirectedEdgeScalars MR_UndirectedEdgeScalars | 
| typedef struct MR_VertScalars MR_VertScalars | 
| MRC_API MR_UndirectedEdgeBitSet * MR_FlowAggregator_computeCatchmentDelineation | ( | const MR_FlowAggregator * | _this | ) | 
finds the edges on the mesh that divides catchment basin (every triangle is attributed to the final destination point based on the path originated from its centroid) Generated from a method of class MR::FlowAggregator named computeCatchmentDelineation. Parameter _this can not be null. It is a single object. Never returns null. Returns an instance allocated on the heap! Must call MR_UndirectedEdgeBitSet_Destroy() to free it when you're done using it. 
| MRC_API MR_VertScalars * MR_FlowAggregator_computeFlow_2_std_vector_MR_FlowOrigin | ( | const MR_FlowAggregator * | _this, | 
| const MR_std_vector_MR_FlowOrigin * | starts, | ||
| const MR_OutputFlows * | out ) | 
tracks multiple flows
| starts | the origin of each flow (should be uniformly sampled over the terrain) | 
MR::FlowAggregator named computeFlow. Parameter _this can not be null. It is a single object. Parameter starts can not be null. It is a single object. Parameter out is a single object. Parameter out has a default argument: {}, pass a null pointer to use it. Never returns null. Returns an instance allocated on the heap! Must call MR_VertScalars_Destroy() to free it when you're done using it. | MRC_API MR_VertScalars * MR_FlowAggregator_computeFlow_2_std_vector_MR_MeshTriPoint | ( | const MR_FlowAggregator * | _this, | 
| const MR_std_vector_MR_MeshTriPoint * | starts, | ||
| const MR_OutputFlows * | out ) | 
Generated from a method of class MR::FlowAggregator named computeFlow. Parameter _this can not be null. It is a single object. Parameter starts can not be null. It is a single object. Parameter out is a single object. Parameter out has a default argument: {}, pass a null pointer to use it. Never returns null. Returns an instance allocated on the heap! Must call MR_VertScalars_Destroy() to free it when you're done using it. 
| MRC_API MR_VertScalars * MR_FlowAggregator_computeFlow_5 | ( | const MR_FlowAggregator * | _this, | 
| MR_uint64_t | numStarts, | ||
| const MR_std_function_MR_MeshTriPoint_from_uint64_t * | startById, | ||
| const MR_std_function_float_from_uint64_t * | amountById, | ||
| const MR_std_function_const_MR_FaceBitSet_ptr_from_uint64_t * | regionById, | ||
| const MR_OutputFlows * | out ) | 
Generated from a method of class MR::FlowAggregator named computeFlow. Parameter _this can not be null. It is a single object. Parameter startById can not be null. It is a single object. Parameter amountById can not be null. It is a single object. Parameter regionById can not be null. It is a single object. Parameter out is a single object. Parameter out has a default argument: {}, pass a null pointer to use it. Never returns null. Returns an instance allocated on the heap! Must call MR_VertScalars_Destroy() to free it when you're done using it. 
| MRC_API MR_phmap_flat_hash_map_MR_VertId_MR_FlowAggregator_Flows * MR_FlowAggregator_computeFlowsPerBasin_1_std_vector_MR_FlowOrigin | ( | const MR_FlowAggregator * | _this, | 
| const MR_std_vector_MR_FlowOrigin * | starts ) | 
tracks multiple flows
| starts | the origin of each flow (should be uniformly sampled over the terrain) | 
MR::FlowAggregator named computeFlowsPerBasin. Parameter _this can not be null. It is a single object. Parameter starts can not be null. It is a single object. Never returns null. Returns an instance allocated on the heap! Must call MR_phmap_flat_hash_map_MR_VertId_MR_FlowAggregator_Flows_Destroy() to free it when you're done using it. | MRC_API MR_phmap_flat_hash_map_MR_VertId_MR_FlowAggregator_Flows * MR_FlowAggregator_computeFlowsPerBasin_1_std_vector_MR_MeshTriPoint | ( | const MR_FlowAggregator * | _this, | 
| const MR_std_vector_MR_MeshTriPoint * | starts ) | 
Generated from a method of class MR::FlowAggregator named computeFlowsPerBasin. Parameter _this can not be null. It is a single object. Parameter starts can not be null. It is a single object. Never returns null. Returns an instance allocated on the heap! Must call MR_phmap_flat_hash_map_MR_VertId_MR_FlowAggregator_Flows_Destroy() to free it when you're done using it. 
| MRC_API MR_phmap_flat_hash_map_MR_VertId_MR_FlowAggregator_Flows * MR_FlowAggregator_computeFlowsPerBasin_3 | ( | const MR_FlowAggregator * | _this, | 
| MR_uint64_t | numStarts, | ||
| const MR_std_function_MR_MeshTriPoint_from_uint64_t * | startById, | ||
| const MR_std_function_float_from_uint64_t * | amountById ) | 
Generated from a method of class MR::FlowAggregator named computeFlowsPerBasin. Parameter _this can not be null. It is a single object. Parameter startById can not be null. It is a single object. Parameter amountById can not be null. It is a single object. Never returns null. Returns an instance allocated on the heap! Must call MR_phmap_flat_hash_map_MR_VertId_MR_FlowAggregator_Flows_Destroy() to free it when you're done using it. 
| MRC_API MR_FlowAggregator * MR_FlowAggregator_Construct | ( | const MR_Mesh * | mesh, | 
| const MR_VertScalars * | heights ) | 
prepares the processing of given mesh with given height in each vertex Generated from a constructor of class MR::FlowAggregator. Parameter mesh can not be null. It is a single object. Parameter heights can not be null. It is a single object. Never returns null. Returns an instance allocated on the heap! Must call MR_FlowAggregator_Destroy() to free it when you're done using it. 
| MRC_API MR_FlowAggregator * MR_FlowAggregator_ConstructFromAnother | ( | MR_PassBy | _other_pass_by, | 
| MR_FlowAggregator * | _other ) | 
Generated from a constructor of class MR::FlowAggregator. Never returns null. Returns an instance allocated on the heap! Must call MR_FlowAggregator_Destroy() to free it when you're done using it. 
| MRC_API void MR_FlowAggregator_Destroy | ( | const MR_FlowAggregator * | _this | ) | 
Destroys a heap-allocated instance of MR_FlowAggregator. Does nothing if the pointer is null. 
| MRC_API void MR_FlowAggregator_DestroyArray | ( | const MR_FlowAggregator * | _this | ) | 
Destroys a heap-allocated array of MR_FlowAggregator. Does nothing if the pointer is null. 
| MRC_API MR_FlowAggregator_Flows * MR_FlowAggregator_Flows_AssignFromAnother | ( | MR_FlowAggregator_Flows * | _this, | 
| MR_PassBy | _other_pass_by, | ||
| MR_FlowAggregator_Flows * | _other ) | 
Generated from a method of class MR::FlowAggregator::Flows named operator=. Parameter _this can not be null. It is a single object. The returned pointer will never be null. It is non-owning, do NOT destroy it. 
| MRC_API MR_FlowAggregator_Flows * MR_FlowAggregator_Flows_ConstructFrom | ( | MR_PassBy | polyline_pass_by, | 
| MR_Polyline3 * | polyline, | ||
| MR_PassBy | flowPerEdge_pass_by, | ||
| MR_UndirectedEdgeScalars * | flowPerEdge ) | 
Constructs MR::FlowAggregator::Flows elementwise. Never returns null. Returns an instance allocated on the heap! Must call MR_FlowAggregator_Flows_Destroy() to free it when you're done using it. 
| MRC_API MR_FlowAggregator_Flows * MR_FlowAggregator_Flows_ConstructFromAnother | ( | MR_PassBy | _other_pass_by, | 
| MR_FlowAggregator_Flows * | _other ) | 
Generated from a constructor of class MR::FlowAggregator::Flows. Never returns null. Returns an instance allocated on the heap! Must call MR_FlowAggregator_Flows_Destroy() to free it when you're done using it. 
| MRC_API MR_FlowAggregator_Flows * MR_FlowAggregator_Flows_DefaultConstruct | ( | void | ) | 
Constructs an empty (default-constructed) instance. Never returns null. Returns an instance allocated on the heap! Must call MR_FlowAggregator_Flows_Destroy() to free it when you're done using it. 
| MRC_API MR_FlowAggregator_Flows * MR_FlowAggregator_Flows_DefaultConstructArray | ( | size_t | num_elems | ) | 
Constructs an array of empty (default-constructed) instances, of the specified size. Will never return null. The array must be destroyed using MR_FlowAggregator_Flows_DestroyArray(). Use MR_FlowAggregator_Flows_OffsetMutablePtr() and MR_FlowAggregator_Flows_OffsetPtr() to access the array elements. 
| MRC_API void MR_FlowAggregator_Flows_Destroy | ( | const MR_FlowAggregator_Flows * | _this | ) | 
Destroys a heap-allocated instance of MR_FlowAggregator_Flows. Does nothing if the pointer is null. 
| MRC_API void MR_FlowAggregator_Flows_DestroyArray | ( | const MR_FlowAggregator_Flows * | _this | ) | 
Destroys a heap-allocated array of MR_FlowAggregator_Flows. Does nothing if the pointer is null. 
| MRC_API const MR_UndirectedEdgeScalars * MR_FlowAggregator_Flows_Get_flowPerEdge | ( | const MR_FlowAggregator_Flows * | _this | ) | 
Returns a pointer to a member variable of class MR::FlowAggregator::Flows named flowPerEdge. Parameter _this can not be null. It is a single object. The returned pointer will never be null. It is non-owning, do NOT destroy it. 
| MRC_API const MR_Polyline3 * MR_FlowAggregator_Flows_Get_polyline | ( | const MR_FlowAggregator_Flows * | _this | ) | 
Returns a pointer to a member variable of class MR::FlowAggregator::Flows named polyline. Parameter _this can not be null. It is a single object. The returned pointer will never be null. It is non-owning, do NOT destroy it. 
| MRC_API MR_UndirectedEdgeScalars * MR_FlowAggregator_Flows_GetMutable_flowPerEdge | ( | MR_FlowAggregator_Flows * | _this | ) | 
Returns a mutable pointer to a member variable of class MR::FlowAggregator::Flows named flowPerEdge. Parameter _this can not be null. It is a single object. The returned pointer will never be null. It is non-owning, do NOT destroy it. 
| MRC_API MR_Polyline3 * MR_FlowAggregator_Flows_GetMutable_polyline | ( | MR_FlowAggregator_Flows * | _this | ) | 
Returns a mutable pointer to a member variable of class MR::FlowAggregator::Flows named polyline. Parameter _this can not be null. It is a single object. The returned pointer will never be null. It is non-owning, do NOT destroy it. 
| MRC_API MR_FlowAggregator_Flows * MR_FlowAggregator_Flows_OffsetMutablePtr | ( | MR_FlowAggregator_Flows * | ptr, | 
| ptrdiff_t | i ) | 
Offsets a pointer to an array element by i positions (not bytes). Use only if you're certain that the pointer points to an array element. 
| MRC_API const MR_FlowAggregator_Flows * MR_FlowAggregator_Flows_OffsetPtr | ( | const MR_FlowAggregator_Flows * | ptr, | 
| ptrdiff_t | i ) | 
Offsets a pointer to an array element by i positions (not bytes). Use only if you're certain that the pointer points to an array element. 
| MRC_API void MR_FlowAggregator_Flows_Set_flowPerEdge | ( | MR_FlowAggregator_Flows * | _this, | 
| MR_PassBy | value_pass_by, | ||
| MR_UndirectedEdgeScalars * | value ) | 
Modifies a member variable of class MR::FlowAggregator::Flows named flowPerEdge. Parameter _this can not be null. It is a single object. 
| MRC_API void MR_FlowAggregator_Flows_Set_polyline | ( | MR_FlowAggregator_Flows * | _this, | 
| MR_PassBy | value_pass_by, | ||
| MR_Polyline3 * | value ) | 
Modifies a member variable of class MR::FlowAggregator::Flows named polyline. Parameter _this can not be null. It is a single object. 
| MRC_API MR_FlowAggregator * MR_FlowAggregator_OffsetMutablePtr | ( | MR_FlowAggregator * | ptr, | 
| ptrdiff_t | i ) | 
Offsets a pointer to an array element by i positions (not bytes). Use only if you're certain that the pointer points to an array element. 
| MRC_API const MR_FlowAggregator * MR_FlowAggregator_OffsetPtr | ( | const MR_FlowAggregator * | ptr, | 
| ptrdiff_t | i ) | 
Offsets a pointer to an array element by i positions (not bytes). Use only if you're certain that the pointer points to an array element. 
| MRC_API MR_FlowOrigin * MR_FlowOrigin_AssignFromAnother | ( | MR_FlowOrigin * | _this, | 
| const MR_FlowOrigin * | _other ) | 
Generated from a method of class MR::FlowOrigin named operator=. Parameter _this can not be null. It is a single object. Parameter _other can not be null. It is a single object. The returned pointer will never be null. It is non-owning, do NOT destroy it. 
| MRC_API MR_FlowOrigin * MR_FlowOrigin_ConstructFrom | ( | const MR_MeshTriPoint * | point, | 
| float | amount ) | 
Constructs MR::FlowOrigin elementwise. Parameter point can not be null. It is a single object. Never returns null. Returns an instance allocated on the heap! Must call MR_FlowOrigin_Destroy() to free it when you're done using it. 
| MRC_API MR_FlowOrigin * MR_FlowOrigin_ConstructFromAnother | ( | const MR_FlowOrigin * | _other | ) | 
Generated from a constructor of class MR::FlowOrigin. Parameter _other can not be null. It is a single object. Never returns null. Returns an instance allocated on the heap! Must call MR_FlowOrigin_Destroy() to free it when you're done using it. 
| MRC_API MR_FlowOrigin * MR_FlowOrigin_DefaultConstruct | ( | void | ) | 
Constructs an empty (default-constructed) instance. Never returns null. Returns an instance allocated on the heap! Must call MR_FlowOrigin_Destroy() to free it when you're done using it. 
| MRC_API MR_FlowOrigin * MR_FlowOrigin_DefaultConstructArray | ( | size_t | num_elems | ) | 
Constructs an array of empty (default-constructed) instances, of the specified size. Will never return null. The array must be destroyed using MR_FlowOrigin_DestroyArray(). Use MR_FlowOrigin_OffsetMutablePtr() and MR_FlowOrigin_OffsetPtr() to access the array elements. 
| MRC_API void MR_FlowOrigin_Destroy | ( | const MR_FlowOrigin * | _this | ) | 
Destroys a heap-allocated instance of MR_FlowOrigin. Does nothing if the pointer is null. 
| MRC_API void MR_FlowOrigin_DestroyArray | ( | const MR_FlowOrigin * | _this | ) | 
Destroys a heap-allocated array of MR_FlowOrigin. Does nothing if the pointer is null. 
| MRC_API const float * MR_FlowOrigin_Get_amount | ( | const MR_FlowOrigin * | _this | ) | 
amount of flow, e.g. can be proportional to the horizontal area associated with the start point Returns a pointer to a member variable of class MR::FlowOrigin named amount. Parameter _this can not be null. It is a single object. The returned pointer will never be null. It is non-owning, do NOT destroy it. 
| MRC_API const MR_MeshTriPoint * MR_FlowOrigin_Get_point | ( | const MR_FlowOrigin * | _this | ) | 
point on the mesh, where this flow starts Returns a pointer to a member variable of class MR::FlowOrigin named point. Parameter _this can not be null. It is a single object. The returned pointer will never be null. It is non-owning, do NOT destroy it. 
| MRC_API float * MR_FlowOrigin_GetMutable_amount | ( | MR_FlowOrigin * | _this | ) | 
amount of flow, e.g. can be proportional to the horizontal area associated with the start point Returns a mutable pointer to a member variable of class MR::FlowOrigin named amount. Parameter _this can not be null. It is a single object. The returned pointer will never be null. It is non-owning, do NOT destroy it. 
| MRC_API MR_MeshTriPoint * MR_FlowOrigin_GetMutable_point | ( | MR_FlowOrigin * | _this | ) | 
point on the mesh, where this flow starts Returns a mutable pointer to a member variable of class MR::FlowOrigin named point. Parameter _this can not be null. It is a single object. The returned pointer will never be null. It is non-owning, do NOT destroy it. 
| MRC_API MR_FlowOrigin * MR_FlowOrigin_OffsetMutablePtr | ( | MR_FlowOrigin * | ptr, | 
| ptrdiff_t | i ) | 
Offsets a pointer to an array element by i positions (not bytes). Use only if you're certain that the pointer points to an array element. 
| MRC_API const MR_FlowOrigin * MR_FlowOrigin_OffsetPtr | ( | const MR_FlowOrigin * | ptr, | 
| ptrdiff_t | i ) | 
Offsets a pointer to an array element by i positions (not bytes). Use only if you're certain that the pointer points to an array element. 
| MRC_API void MR_FlowOrigin_Set_amount | ( | MR_FlowOrigin * | _this, | 
| float | value ) | 
amount of flow, e.g. can be proportional to the horizontal area associated with the start point Modifies a member variable of class MR::FlowOrigin named amount. Parameter _this can not be null. It is a single object. 
| MRC_API void MR_FlowOrigin_Set_point | ( | MR_FlowOrigin * | _this, | 
| const MR_MeshTriPoint * | value ) | 
point on the mesh, where this flow starts Modifies a member variable of class MR::FlowOrigin named point. Parameter _this can not be null. It is a single object. Parameter value can not be null. It is a single object. 
| MRC_API MR_OutputFlows * MR_OutputFlows_AssignFromAnother | ( | MR_OutputFlows * | _this, | 
| const MR_OutputFlows * | _other ) | 
Generated from a method of class MR::OutputFlows named operator=. Parameter _this can not be null. It is a single object. Parameter _other can not be null. It is a single object. The returned pointer will never be null. It is non-owning, do NOT destroy it. 
| MRC_API MR_OutputFlows * MR_OutputFlows_ConstructFrom | ( | MR_Polyline3 * | pPolyline, | 
| MR_UndirectedEdgeScalars * | pFlowPerEdge, | ||
| float | amountGreaterThan ) | 
Constructs MR::OutputFlows elementwise. Never returns null. Returns an instance allocated on the heap! Must call MR_OutputFlows_Destroy() to free it when you're done using it. 
| MRC_API MR_OutputFlows * MR_OutputFlows_ConstructFromAnother | ( | const MR_OutputFlows * | _other | ) | 
Generated from a constructor of class MR::OutputFlows. Parameter _other can not be null. It is a single object. Never returns null. Returns an instance allocated on the heap! Must call MR_OutputFlows_Destroy() to free it when you're done using it. 
| MRC_API MR_OutputFlows * MR_OutputFlows_DefaultConstruct | ( | void | ) | 
Constructs an empty (default-constructed) instance. Never returns null. Returns an instance allocated on the heap! Must call MR_OutputFlows_Destroy() to free it when you're done using it. 
| MRC_API MR_OutputFlows * MR_OutputFlows_DefaultConstructArray | ( | size_t | num_elems | ) | 
Constructs an array of empty (default-constructed) instances, of the specified size. Will never return null. The array must be destroyed using MR_OutputFlows_DestroyArray(). Use MR_OutputFlows_OffsetMutablePtr() and MR_OutputFlows_OffsetPtr() to access the array elements. 
| MRC_API void MR_OutputFlows_Destroy | ( | const MR_OutputFlows * | _this | ) | 
Destroys a heap-allocated instance of MR_OutputFlows. Does nothing if the pointer is null. 
| MRC_API void MR_OutputFlows_DestroyArray | ( | const MR_OutputFlows * | _this | ) | 
Destroys a heap-allocated array of MR_OutputFlows. Does nothing if the pointer is null. 
| MRC_API const float * MR_OutputFlows_Get_amountGreaterThan | ( | const MR_OutputFlows * | _this | ) | 
output in outPolyline only the flows with the amount greater than Returns a pointer to a member variable of class MR::OutputFlows named amountGreaterThan. Parameter _this can not be null. It is a single object. The returned pointer will never be null. It is non-owning, do NOT destroy it. 
| MRC_API MR_UndirectedEdgeScalars *const * MR_OutputFlows_Get_pFlowPerEdge | ( | const MR_OutputFlows * | _this | ) | 
optional output: flow in each line of outPolyline Returns a pointer to a member variable of class MR::OutputFlows named pFlowPerEdge. Parameter _this can not be null. It is a single object. The returned pointer will never be null. It is non-owning, do NOT destroy it. 
| MRC_API MR_Polyline3 *const * MR_OutputFlows_Get_pPolyline | ( | const MR_OutputFlows * | _this | ) | 
optional output: lines of all flows Returns a pointer to a member variable of class MR::OutputFlows named pPolyline. Parameter _this can not be null. It is a single object. The returned pointer will never be null. It is non-owning, do NOT destroy it. 
| MRC_API float * MR_OutputFlows_GetMutable_amountGreaterThan | ( | MR_OutputFlows * | _this | ) | 
output in outPolyline only the flows with the amount greater than Returns a mutable pointer to a member variable of class MR::OutputFlows named amountGreaterThan. Parameter _this can not be null. It is a single object. The returned pointer will never be null. It is non-owning, do NOT destroy it. 
| MRC_API MR_UndirectedEdgeScalars ** MR_OutputFlows_GetMutable_pFlowPerEdge | ( | MR_OutputFlows * | _this | ) | 
optional output: flow in each line of outPolyline Returns a mutable pointer to a member variable of class MR::OutputFlows named pFlowPerEdge. Parameter _this can not be null. It is a single object. The returned pointer will never be null. It is non-owning, do NOT destroy it. 
| MRC_API MR_Polyline3 ** MR_OutputFlows_GetMutable_pPolyline | ( | MR_OutputFlows * | _this | ) | 
optional output: lines of all flows Returns a mutable pointer to a member variable of class MR::OutputFlows named pPolyline. Parameter _this can not be null. It is a single object. The returned pointer will never be null. It is non-owning, do NOT destroy it. 
| MRC_API MR_OutputFlows * MR_OutputFlows_OffsetMutablePtr | ( | MR_OutputFlows * | ptr, | 
| ptrdiff_t | i ) | 
Offsets a pointer to an array element by i positions (not bytes). Use only if you're certain that the pointer points to an array element. 
| MRC_API const MR_OutputFlows * MR_OutputFlows_OffsetPtr | ( | const MR_OutputFlows * | ptr, | 
| ptrdiff_t | i ) | 
Offsets a pointer to an array element by i positions (not bytes). Use only if you're certain that the pointer points to an array element. 
| MRC_API void MR_OutputFlows_Set_amountGreaterThan | ( | MR_OutputFlows * | _this, | 
| float | value ) | 
output in outPolyline only the flows with the amount greater than Modifies a member variable of class MR::OutputFlows named amountGreaterThan. Parameter _this can not be null. It is a single object. 
| MRC_API void MR_OutputFlows_Set_pFlowPerEdge | ( | MR_OutputFlows * | _this, | 
| MR_UndirectedEdgeScalars * | value ) | 
optional output: flow in each line of outPolyline Modifies a member variable of class MR::OutputFlows named pFlowPerEdge. Parameter _this can not be null. It is a single object. 
| MRC_API void MR_OutputFlows_Set_pPolyline | ( | MR_OutputFlows * | _this, | 
| MR_Polyline3 * | value ) | 
optional output: lines of all flows Modifies a member variable of class MR::OutputFlows named pPolyline. Parameter _this can not be null. It is a single object.