Undoable write of one per-vertex attribute across a set of vertices. More...

#include <meshcommands.h>

Inheritance diagram for MeshSetVertexAttributeCommand:

Collaboration diagram for MeshSetVertexAttributeCommand:

Public Member Functions
	MeshSetVertexAttributeCommand (SWMM2DMeshLayer layer, QByteArray key, QVector< int > vertices, QVector< mesh::MeshVertex > newAttrs, QVector< mesh::MeshVertex > oldAttrs, const QString &text, MapCanvas canvas, QUndoCommand *parent=nullptr)

void	undo () override

void	redo () override

int	id () const override

Public Member Functions inherited from MapCommand
	MapCommand (const QString &text, MapCanvas canvas, QUndoCommand parent=nullptr)
	Constructs a map command with a human-readable `text`.

MapCanvas *	canvas () const

Additional Inherited Members
Protected Attributes inherited from MapCommand
MapCanvas *	m_canvas

Detailed Description

Undoable write of one per-vertex attribute across a set of vertices.

Stores a snapshot of every touched vertex's editable attribute set (z / tag / coupledNode / couplingCd / couplingArea) on both sides of the edit rather than the single changed field. That is what makes undo faithful for the interdependent ones: clearing a coupling also resets Cd and Area to the engine defaults, so restoring the node id alone would silently drop the user's coefficients.

The snapshot is applied field-by-field through the layer's apply* helpers, in an order that respects their preconditions (coupledNode before Cd/Area, which are rejected on an uncoupled vertex). Fields that did not move are no-ops inside the helpers.

Constructor & Destructor Documentation

◆ MeshSetVertexAttributeCommand()

MeshSetVertexAttributeCommand::MeshSetVertexAttributeCommand	(	SWMM2DMeshLayer *	layer,
		QByteArray	key,
		QVector< int >	vertices,
		QVector< mesh::MeshVertex >	newAttrs,
		QVector< mesh::MeshVertex >	oldAttrs,
		const QString &	text,
		MapCanvas *	canvas,
		QUndoCommand *	parent = `nullptr`
	)

Parameters

layer	Mesh layer that owns the vertices.
key	Attribute key ("z", "tag", "coupledNode", "couplingCd", "couplingArea") — used for labelling only; the snapshots carry the values.
vertices	Vertex indices to write.
newAttrs	Parallel to `vertices:` post-edit attribute snapshot.
oldAttrs	Parallel to `vertices:` pre-edit attribute snapshot.

Member Function Documentation

◆ id()

int MeshSetVertexAttributeCommand::id ( ) const

inlineoverride

◆ redo()

void MeshSetVertexAttributeCommand::redo ( )

override

◆ undo()

void MeshSetVertexAttributeCommand::undo ( )