protected virtual Point SnapTo( 
   Node moving,
   Point pt,
   Node snapper,
   Dictionary<Part,DraggingTool.Info> draggedparts
)

Parameters

moving

the Northwoods.GoXam.Node being dragged

pt

the Point in model coordinates to which the node is being dragged

snapper

the Northwoods.GoXam.Node, typically a grid, which is controlling the drag snapping

draggedparts

a Dictionary of Northwoods.GoXam.Parts being dragged

Return Value

This is called by ComputeMove.

When there is a snapper, if the snapper's Northwoods.GoXam.Part.DragOverSnapEnabled property is false, this method just returns the unmodified pt value. Otherwise this uses the Northwoods.GoXam.Part.DragOverSnapCellSize and Northwoods.GoXam.Part.DragOverSnapCellSpot to compute the nearest grid point that should be the location of the moving node.

If there is no snapper, this uses the Northwoods.GoXam.Diagram's Northwoods.GoXam.Diagram.GridSnapCellSize, Northwoods.GoXam.Diagram.GridSnapCellSpot, and Northwoods.GoXam.Diagram.GridSnapOrigin properties to calculate and return the nearest grid point.

Reference

DraggingTool Class
DraggingTool Members