Classes
struct	CascadeEntry
	Describes one object that was impacted (deleted or nullified) during a cascade deletion. More...

struct	CascadeResult
	Aggregate cascade result for one deletion operation. More...

struct	ConversionResult

struct	SplitResult
	Result of vj_split_conduit. More...

Functions
std::vector< int >	find_control_rule_refs (const SimulationContext &ctx, const std::string &object_name)
	Find control rules whose text references an object by name.

CascadeResult	analyze_node_impact (const SimulationContext &ctx, int node_idx)

CascadeResult	analyze_link_impact (const SimulationContext &ctx, int link_idx)

CascadeResult	analyze_subcatch_impact (const SimulationContext &ctx, int sc_idx)

CascadeResult	analyze_gage_impact (const SimulationContext &ctx, int gage_idx)

CascadeResult	analyze_table_impact (const SimulationContext &ctx, int table_idx)

CascadeResult	analyze_transect_impact (const SimulationContext &ctx, int transect_idx)

CascadeResult	delete_link (SimulationContext &ctx, int link_idx)

CascadeResult	delete_node (SimulationContext &ctx, int node_idx)

CascadeResult	delete_subcatch (SimulationContext &ctx, int sc_idx)

CascadeResult	delete_gage (SimulationContext &ctx, int gage_idx)

CascadeResult	delete_nodes_many (SimulationContext &ctx, std::vector< int > indices)
	Batch deletion — equivalent to sequential per-object deletes in DESCENDING index order, with ONE name-index rebuild per batch.

CascadeResult	delete_links_many (SimulationContext &ctx, std::vector< int > indices)
	Batch deletion — equivalent to sequential per-object deletes in DESCENDING index order, with ONE name-index rebuild per batch.

CascadeResult	delete_subcatches_many (SimulationContext &ctx, std::vector< int > indices)
	Batch deletion — equivalent to sequential per-object deletes in DESCENDING index order, with ONE name-index rebuild per batch.

CascadeResult	delete_gages_many (SimulationContext &ctx, std::vector< int > indices)
	Batch deletion — equivalent to sequential per-object deletes in DESCENDING index order, with ONE name-index rebuild per batch.

CascadeResult	delete_table (SimulationContext &ctx, int table_idx)

CascadeResult	delete_transect (SimulationContext &ctx, int transect_idx)

CascadeResult	analyze_pollutant_impact (const SimulationContext &ctx, int pollut_idx)

CascadeResult	delete_pollutant (SimulationContext &ctx, int pollut_idx)

CascadeResult	analyze_pattern_impact (const SimulationContext &ctx, int pattern_idx)

CascadeResult	delete_pattern (SimulationContext &ctx, int pattern_idx)

CascadeResult	analyze_aquifer_impact (const SimulationContext &ctx, int aquifer_idx)

CascadeResult	delete_aquifer (SimulationContext &ctx, int aquifer_idx)

CascadeResult	analyze_snowpack_impact (const SimulationContext &ctx, int snowpack_idx)

CascadeResult	delete_snowpack (SimulationContext &ctx, int snowpack_idx)

CascadeResult	analyze_lid_impact (const SimulationContext &ctx, int lid_idx)

CascadeResult	delete_lid (SimulationContext &ctx, int lid_idx)

CascadeResult	analyze_street_impact (const SimulationContext &ctx, int street_idx)

CascadeResult	delete_street (SimulationContext &ctx, int street_idx)

CascadeResult	analyze_inlet_impact (const SimulationContext &ctx, int inlet_idx)

CascadeResult	delete_inlet (SimulationContext &ctx, int inlet_idx)

CascadeResult	analyze_landuse_impact (const SimulationContext &ctx, int landuse_idx)

CascadeResult	delete_landuse (SimulationContext &ctx, int landuse_idx)

CascadeResult	analyze_hydrograph_impact (const SimulationContext &ctx, const std::string &uh_name)
	Unit-hydrograph groups are keyed by name (no stable index exists).

CascadeResult	delete_hydrograph (SimulationContext &ctx, const std::string &uh_name)

ConversionResult	convert_node (SimulationContext &ctx, int idx, NodeType new_type)
	Convert a node in-place to `new_type`.

ConversionResult	convert_link (SimulationContext &ctx, int idx, LinkType new_type)
	Convert a link in-place to `new_type`.

int	vj_rule_violation (const SimulationContext &ctx, int node_idx)
	Check the virtual-junction usage rules for a node.

void	vj_apply_derived_geometry (SimulationContext &ctx, int node_idx)
	Apply the derived-geometry contract to a validated virtual junction: full depth = pipe crown (xsect y_full), zero surcharge depth, zero ponded area. The invert and the rendering-only rim depth are user/split-supplied data and are left alone.

void	vj_clear_virtual (SimulationContext &ctx, int node_idx)
	Clear a node's virtual flag, promoting its rendering rim depth (if any) back to the real full depth.

int	vj_set_virtual (SimulationContext &ctx, int node_idx, bool make_virtual)
	Set or clear a node's virtual flag.

SplitResult	vj_split_conduit (SimulationContext &ctx, int link_idx, double t, const std::string &new_node_name, const std::string &new_link_name, bool make_virtual)
	Split a conduit at normalized position t along its vertex-aware polyline, inserting a new node (virtual junction when `make_virtual`) and a new downstream conduit.

int	vj_fuse (SimulationContext &ctx, int node_idx, int *surviving_link_out)
	Re-fuse the two conduits of a virtual junction into one, deleting the node (inverse of a virtual split).

int	ij_host_conduit (const SimulationContext &ctx, int host_kind, int host_idx)
	The conduit whose cross-section governs an inlet usage row.

bool	ij_usage_shape_ok (const SimulationContext &ctx, int design_idx, int link_idx)
	Legacy inlet_validate shape rule (inlet.c:498-505): CUSTOM designs fit any shape, DROP_* need RECT_OPEN/TRAPEZOIDAL, everything else needs STREET_XSECT.

int	ij_rule_violation (const SimulationContext &ctx, int node_idx, bool for_drop_inlet)
	Check the inlet-junction usage rules for a node: every virtual-junction rule, then rule 623 — both attached conduits carry the cross-section the design needs (STREET_XSECT, or RECT_OPEN/TRAPEZOIDAL when `for_drop_inlet`).

int	ij_set_inlet (SimulationContext &ctx, int node_idx, bool make_inlet)
	Promote a node to an inlet junction or demote it.

SplitResult	ij_split_conduit (SimulationContext &ctx, int link_idx, double t, const std::string &new_node_name, const std::string &new_link_name, int design_idx, int capture_node_idx)
	Split a conduit and make the inserted node an inlet junction with the given design and capture node.

int	ij_fuse (SimulationContext &ctx, int node_idx, int *surviving_link_out)
	Inverse of ij_split_conduit: re-fuse an inlet junction's conduit pair. The node deletion inside vj_fuse cascades the node-hosted usage row away with the node; a failed fuse changes nothing.

Function Documentation

◆ analyze_aquifer_impact()

CascadeResult openswmm::edit::analyze_aquifer_impact	(	const SimulationContext &	ctx,
		int	aquifer_idx )

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◆ analyze_gage_impact()

CascadeResult openswmm::edit::analyze_gage_impact	(	const SimulationContext &	ctx,
		int	gage_idx )

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◆ analyze_hydrograph_impact()

CascadeResult openswmm::edit::analyze_hydrograph_impact	(	const SimulationContext &	ctx,
		const std::string &	uh_name )

Unit-hydrograph groups are keyed by name (no stable index exists).

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◆ analyze_inlet_impact()

CascadeResult openswmm::edit::analyze_inlet_impact	(	const SimulationContext &	ctx,
		int	inlet_idx )

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◆ analyze_landuse_impact()

CascadeResult openswmm::edit::analyze_landuse_impact	(	const SimulationContext &	ctx,
		int	landuse_idx )

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◆ analyze_lid_impact()

CascadeResult openswmm::edit::analyze_lid_impact	(	const SimulationContext &	ctx,
		int	lid_idx )

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◆ analyze_link_impact()

CascadeResult openswmm::edit::analyze_link_impact	(	const SimulationContext &	ctx,
		int	link_idx )

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◆ analyze_node_impact()

CascadeResult openswmm::edit::analyze_node_impact	(	const SimulationContext &	ctx,
		int	node_idx )

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◆ analyze_pattern_impact()

CascadeResult openswmm::edit::analyze_pattern_impact	(	const SimulationContext &	ctx,
		int	pattern_idx )

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◆ analyze_pollutant_impact()

CascadeResult openswmm::edit::analyze_pollutant_impact	(	const SimulationContext &	ctx,
		int	pollut_idx )

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◆ analyze_snowpack_impact()

CascadeResult openswmm::edit::analyze_snowpack_impact	(	const SimulationContext &	ctx,
		int	snowpack_idx )

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◆ analyze_street_impact()

CascadeResult openswmm::edit::analyze_street_impact	(	const SimulationContext &	ctx,
		int	street_idx )

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◆ analyze_subcatch_impact()

CascadeResult openswmm::edit::analyze_subcatch_impact	(	const SimulationContext &	ctx,
		int	sc_idx )

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◆ analyze_table_impact()

CascadeResult openswmm::edit::analyze_table_impact	(	const SimulationContext &	ctx,
		int	table_idx )

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◆ analyze_transect_impact()

CascadeResult openswmm::edit::analyze_transect_impact	(	const SimulationContext &	ctx,
		int	transect_idx )

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◆ convert_link()

ConversionResult openswmm::edit::convert_link	(	SimulationContext &	ctx,
		int	idx,
		LinkType	new_type )

Convert a link in-place to new_type.

Precondition: idx is valid; engine must be in BUILDING or OPENED state (not enforced here).

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◆ convert_node()

ConversionResult openswmm::edit::convert_node	(	SimulationContext &	ctx,
		int	idx,
		NodeType	new_type )

Convert a node in-place to new_type.

Precondition: idx is valid; engine must be in BUILDING or OPENED state (not enforced here).

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◆ delete_aquifer()

CascadeResult openswmm::edit::delete_aquifer	(	SimulationContext &	ctx,
		int	aquifer_idx )

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◆ delete_gage()

CascadeResult openswmm::edit::delete_gage	(	SimulationContext &	ctx,
		int	gage_idx )

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◆ delete_gages_many()

CascadeResult openswmm::edit::delete_gages_many	(	SimulationContext &	ctx,
		std::vector< int >	indices )

Batch deletion — equivalent to sequential per-object deletes in DESCENDING index order, with ONE name-index rebuild per batch.

The K-object cost of the per-object path is dominated by NameIndex::remove_at rebuilding the whole name→index map per delete (K full rehashes over every remaining name). These run the SAME per-object delete code — semantics are identical by construction, cascade behaviour included — inside a begin/end_bulk_remove() scope on the affected name indexes, so the map rebuilds once. indices are deduplicated and sorted descending internally (descending also keeps each entry's reported index equal to its pre-batch index for the objects named in indices; cascade entries report indices as the sequential-descending equivalent would). Out-of-range indices are the CALLER's job to reject (the C wrapper validates before any mutation, keeping the call all-or-nothing).

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◆ delete_hydrograph()

CascadeResult openswmm::edit::delete_hydrograph	(	SimulationContext &	ctx,
		const std::string &	uh_name )

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◆ delete_inlet()

CascadeResult openswmm::edit::delete_inlet	(	SimulationContext &	ctx,
		int	inlet_idx )

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◆ delete_landuse()

CascadeResult openswmm::edit::delete_landuse	(	SimulationContext &	ctx,
		int	landuse_idx )

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◆ delete_lid()

CascadeResult openswmm::edit::delete_lid	(	SimulationContext &	ctx,
		int	lid_idx )

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◆ delete_link()

CascadeResult openswmm::edit::delete_link	(	SimulationContext &	ctx,
		int	link_idx )

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◆ delete_links_many()

CascadeResult openswmm::edit::delete_links_many	(	SimulationContext &	ctx,
		std::vector< int >	indices )

Batch deletion — equivalent to sequential per-object deletes in DESCENDING index order, with ONE name-index rebuild per batch.

The K-object cost of the per-object path is dominated by NameIndex::remove_at rebuilding the whole name→index map per delete (K full rehashes over every remaining name). These run the SAME per-object delete code — semantics are identical by construction, cascade behaviour included — inside a begin/end_bulk_remove() scope on the affected name indexes, so the map rebuilds once. indices are deduplicated and sorted descending internally (descending also keeps each entry's reported index equal to its pre-batch index for the objects named in indices; cascade entries report indices as the sequential-descending equivalent would). Out-of-range indices are the CALLER's job to reject (the C wrapper validates before any mutation, keeping the call all-or-nothing).

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◆ delete_node()

CascadeResult openswmm::edit::delete_node	(	SimulationContext &	ctx,
		int	node_idx )

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◆ delete_nodes_many()

CascadeResult openswmm::edit::delete_nodes_many	(	SimulationContext &	ctx,
		std::vector< int >	indices )

Batch deletion — equivalent to sequential per-object deletes in DESCENDING index order, with ONE name-index rebuild per batch.

The K-object cost of the per-object path is dominated by NameIndex::remove_at rebuilding the whole name→index map per delete (K full rehashes over every remaining name). These run the SAME per-object delete code — semantics are identical by construction, cascade behaviour included — inside a begin/end_bulk_remove() scope on the affected name indexes, so the map rebuilds once. indices are deduplicated and sorted descending internally (descending also keeps each entry's reported index equal to its pre-batch index for the objects named in indices; cascade entries report indices as the sequential-descending equivalent would). Out-of-range indices are the CALLER's job to reject (the C wrapper validates before any mutation, keeping the call all-or-nothing).

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◆ delete_pattern()

CascadeResult openswmm::edit::delete_pattern	(	SimulationContext &	ctx,
		int	pattern_idx )

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◆ delete_pollutant()

CascadeResult openswmm::edit::delete_pollutant	(	SimulationContext &	ctx,
		int	pollut_idx )

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◆ delete_snowpack()

CascadeResult openswmm::edit::delete_snowpack	(	SimulationContext &	ctx,
		int	snowpack_idx )

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◆ delete_street()

CascadeResult openswmm::edit::delete_street	(	SimulationContext &	ctx,
		int	street_idx )

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◆ delete_subcatch()

CascadeResult openswmm::edit::delete_subcatch	(	SimulationContext &	ctx,
		int	sc_idx )

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◆ delete_subcatches_many()

CascadeResult openswmm::edit::delete_subcatches_many	(	SimulationContext &	ctx,
		std::vector< int >	indices )

Batch deletion — equivalent to sequential per-object deletes in DESCENDING index order, with ONE name-index rebuild per batch.

The K-object cost of the per-object path is dominated by NameIndex::remove_at rebuilding the whole name→index map per delete (K full rehashes over every remaining name). These run the SAME per-object delete code — semantics are identical by construction, cascade behaviour included — inside a begin/end_bulk_remove() scope on the affected name indexes, so the map rebuilds once. indices are deduplicated and sorted descending internally (descending also keeps each entry's reported index equal to its pre-batch index for the objects named in indices; cascade entries report indices as the sequential-descending equivalent would). Out-of-range indices are the CALLER's job to reject (the C wrapper validates before any mutation, keeping the call all-or-nothing).

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◆ delete_table()

CascadeResult openswmm::edit::delete_table	(	SimulationContext &	ctx,
		int	table_idx )

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◆ delete_transect()

CascadeResult openswmm::edit::delete_transect	(	SimulationContext &	ctx,
		int	transect_idx )

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◆ find_control_rule_refs()

std::vector< int > openswmm::edit::find_control_rule_refs	(	const SimulationContext &	ctx,
		const std::string &	object_name )

Find control rules whose text references an object by name.

Scans each rule's premise/action clauses for an object-type keyword (NODE, LINK, CONDUIT, PUMP, ORIFICE, WEIR, OUTLET) followed by object_name (case-insensitive, matching legacy rule parsing). Read-only; rule text is never modified by any delete — the caller decides what to do with affected rules.

Returns: Indices into ControlRuleStore::rule_text, ascending.

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◆ ij_fuse()

int openswmm::edit::ij_fuse	(	SimulationContext &	ctx,
		int	node_idx,
		int *	surviving_link_out )

Inverse of ij_split_conduit: re-fuse an inlet junction's conduit pair. The node deletion inside vj_fuse cascades the node-hosted usage row away with the node; a failed fuse changes nothing.

Returns: 0 on success, ERR_VJ_LINK_COUNT when the node is not a through two-conduit pair, or -1 when it is not an inlet junction.

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◆ ij_host_conduit()

int openswmm::edit::ij_host_conduit	(	const SimulationContext &	ctx,
		int	host_kind,
		int	host_idx )

The conduit whose cross-section governs an inlet usage row.

Parameters

host_kind 0 = link host (the conduit itself), 1 = node host (the conduit approaching the inlet junction — node2 == host — else the first attached conduit).

Returns: The link index, or -1 when there is none.

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◆ ij_rule_violation()

int openswmm::edit::ij_rule_violation	(	const SimulationContext &	ctx,
		int	node_idx,
		bool	for_drop_inlet )

Check the inlet-junction usage rules for a node: every virtual-junction rule, then rule 623 — both attached conduits carry the cross-section the design needs (STREET_XSECT, or RECT_OPEN/TRAPEZOIDAL when for_drop_inlet).

Returns: 0 when eligible, else the ERR_VJ_* / ERR_IJ_NOT_STREET code.

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◆ ij_set_inlet()

int openswmm::edit::ij_set_inlet	(	SimulationContext &	ctx,
		int	node_idx,
		bool	make_inlet )

Promote a node to an inlet junction or demote it.

Promotion runs ij_rule_violation first (nothing is changed on a violation), makes the node virtual when it is not already, and sets is_inlet. The drop-inlet variant of rule 623 is selected from the node's existing usage row when it has one. Demotion clears is_inlet and erases the node's usage row, leaving a plain virtual junction (use vj_set_virtual to go further).

Returns: 0 on success, a rule code on a violation, or -1 for a bad index / non-junction node.

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◆ ij_split_conduit()

SplitResult openswmm::edit::ij_split_conduit	(	SimulationContext &	ctx,
		int	link_idx,
		double	t,
		const std::string &	new_node_name,
		const std::string &	new_link_name,
		int	design_idx,
		int	capture_node_idx )

Split a conduit and make the inserted node an inlet junction with the given design and capture node.

vj_split_conduit (make_virtual) followed by the usage row and ij_set_inlet. Atomic: any failure after the split is undone with vj_fuse and reported through SplitResult::err (625 for a bad design, 627 for a bad capture node, else a rule code).

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◆ ij_usage_shape_ok()

bool openswmm::edit::ij_usage_shape_ok	(	const SimulationContext &	ctx,
		int	design_idx,
		int	link_idx )

Legacy inlet_validate shape rule (inlet.c:498-505): CUSTOM designs fit any shape, DROP_* need RECT_OPEN/TRAPEZOIDAL, everything else needs STREET_XSECT.

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◆ vj_apply_derived_geometry()

void openswmm::edit::vj_apply_derived_geometry	(	SimulationContext &	ctx,
		int	node_idx )

Apply the derived-geometry contract to a validated virtual junction: full depth = pipe crown (xsect y_full), zero surcharge depth, zero ponded area. The invert and the rendering-only rim depth are user/split-supplied data and are left alone.

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◆ vj_clear_virtual()

void openswmm::edit::vj_clear_virtual	(	SimulationContext &	ctx,
		int	node_idx )

Clear a node's virtual flag, promoting its rendering rim depth (if any) back to the real full depth.

The single exit from virtual: shared by swmm_node_set_virtual(0) and the node type converter, so J(4 ft) → VJ → J returns 4 ft instead of keeping the pipe crown. A no-op on a non-virtual node. An inlet junction is a virtual junction too, so this also clears is_inlet and drops the node's inlet-usage row — nothing may hold a node-hosted usage once the node is a plain junction again.

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◆ vj_fuse()

int openswmm::edit::vj_fuse	(	SimulationContext &	ctx,
		int	node_idx,
		int *	surviving_link_out )

Re-fuse the two conduits of a virtual junction into one, deleting the node (inverse of a virtual split).

The upstream conduit's name survives; lengths sum; the node coordinate becomes an interior vertex of the merged conduit so map alignment is preserved; the downstream conduit's identifiers are retired. Requires a through orientation.

Parameters

surviving_link_out Optional: receives the surviving conduit's index AFTER deletions renumber the arrays.

Returns: 0 on success, ERR_VJ_LINK_COUNT if the node is not a through two-conduit virtual junction, or -1 for a bad index / non-virtual node.

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◆ vj_rule_violation()

int openswmm::edit::vj_rule_violation	(	const SimulationContext &	ctx,
		int	node_idx )

Check the virtual-junction usage rules for a node.

Rules (plan §6): exactly two attached links, both conduits (ERR_VJ_LINK_COUNT); identical cross-section — shape, geom1..4, curve/transect, barrels; roughness may differ (ERR_VJ_XSECT_MISMATCH); zero offsets at the node (ERR_VJ_OFFSET); the node is not a 2D surface-coupling point (ERR_VJ_LATERAL_INFLOW). Point lateral sources — [INFLOWS], [DWF], RDII, subcatchment outlets, LID drains, the runtime API — are permitted. The routing-model rule is model-level and checked by PostParseResolver, not here.

Returns: 0 when all rules pass, else the ERR_VJ_* code of the first violated rule (ErrorCodes.hpp).

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◆ vj_set_virtual()

int openswmm::edit::vj_set_virtual	(	SimulationContext &	ctx,
		int	node_idx,
		bool	make_virtual )

Set or clear a node's virtual flag.

Setting runs the full rule check first and applies the derived geometry on success; the node must be JUNCTION-typed. A max depth taller than the pipe crown is carried over as the node's rendering rim depth so the drawn ground surface survives the conversion. Clearing (vj_clear_virtual) always succeeds for a virtual node.

Returns: 0 on success, ERR_VJ_* on a violated rule, or -1 for a bad index / non-junction node.

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◆ vj_split_conduit()

SplitResult openswmm::edit::vj_split_conduit	(	SimulationContext &	ctx,
		int	link_idx,
		double	t,
		const std::string &	new_node_name,
		const std::string &	new_link_name,
		bool	make_virtual )

Split a conduit at normalized position t along its vertex-aware polyline, inserting a new node (virtual junction when make_virtual) and a new downstream conduit.

The original conduit keeps its name and upstream end and is shortened to t·L; the new conduit carries the remaining (1−t)·L, copies the cross-section, roughness, barrels and related properties, and takes over the downstream offset. The break-point invert is interpolated along the conduit gradient, interior vertices are partitioned between the two conduits, and the new node's coordinate is the polyline point at t.

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Classes

Functions

Function Documentation

◆ analyze_aquifer_impact()

◆ analyze_gage_impact()

◆ analyze_hydrograph_impact()

◆ analyze_inlet_impact()

◆ analyze_landuse_impact()

◆ analyze_lid_impact()

◆ analyze_link_impact()

◆ analyze_node_impact()

◆ analyze_pattern_impact()

◆ analyze_pollutant_impact()

◆ analyze_snowpack_impact()

◆ analyze_street_impact()

◆ analyze_subcatch_impact()

◆ analyze_table_impact()

◆ analyze_transect_impact()

◆ convert_link()

◆ convert_node()

◆ delete_aquifer()

◆ delete_gage()

◆ delete_gages_many()

◆ delete_hydrograph()

◆ delete_inlet()

◆ delete_landuse()

◆ delete_lid()

◆ delete_link()

◆ delete_links_many()

◆ delete_node()

◆ delete_nodes_many()

◆ delete_pattern()

◆ delete_pollutant()

◆ delete_snowpack()

◆ delete_street()

◆ delete_subcatch()

◆ delete_subcatches_many()

◆ delete_table()

◆ delete_transect()

◆ find_control_rule_refs()

◆ ij_fuse()

◆ ij_host_conduit()

◆ ij_rule_violation()

◆ ij_set_inlet()

◆ ij_split_conduit()

◆ ij_usage_shape_ok()

◆ vj_apply_derived_geometry()

◆ vj_clear_virtual()

◆ vj_fuse()

◆ vj_rule_violation()

◆ vj_set_virtual()

◆ vj_split_conduit()