handlePointerMove_ doesn't need to be called when dragging.
handleDragEvent_ takes care of the event in that case.
in handleDragEvent_, createOrUpdateVertexFeature_ doesn't need to be called for each dragged segment. it can be called only once with current vertex.
fixes made to pass the build
Prevent vertexFeature_ from ol.interaction.Modify from being selected by ol.interaction.Select.
The bug occurs when an delete attempt fails. ex: clicikng on the first or last node of LineString,
or clicking a line segment between two nodes.
This commit fixes the bug that occurs when trying to modify
a closed LineString by clicking on the starting/ending node.
Such a closed line is added to the modify-test example.
Fix a bug in ol.interaction.Modify when trying to delete nodes
on a geometry that has duplicate nodes. A bug occurs when
clicking on the duplicate node.
Fran Peručić