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Do not split segments while in the loop

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In combination with the additional squaredDistanceToSegment
check we can ensure that a future vertex is only created on one
segment per feature, and only on the segment that it appears on.

This change also renames the misleading dragVertices_ member to
dragSegments_.
This commit is contained in:
ahocevar
2013-09-25 16:57:20 +02:00
parent ff17eb53d4
commit a3b18bf16e
1 changed files with 18 additions and 13 deletions
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31
src/ol/interaction/modifyinteraction.js
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@@ -61,7 +61,7 @@ ol.interaction.Modify = function(opt_options) {
* @type {Array}
* @private
*/
this.dragVertices_ = null;
this.dragSegments_ = null;
this.interactingHint = 0;
};
@@ -170,13 +170,14 @@ ol.interaction.Modify.prototype.addSegments_ =
* @inheritDoc
*/
ol.interaction.Modify.prototype.handleDragStart = function(evt) {
this.dragVertices_ = [];
this.dragSegments_ = [];
for (var i = 0, ii = this.layers_.length; i < ii; ++i) {
var selectionData = this.layers_[i].getSelectionData();
var selectionLayer = selectionData.layer;
if (!goog.isNull(selectionLayer)) {
var editData = selectionLayer.getEditData();
var vertexFeature = editData.vertexFeature;
var insertVertices = [];
if (!goog.isNull(vertexFeature) && vertexFeature.renderIntent !=
ol.layer.VectorLayerRenderIntent.HIDDEN) {
var vertex = vertexFeature.getGeometry().getCoordinates();
@@ -188,14 +189,18 @@ ol.interaction.Modify.prototype.handleDragStart = function(evt) {
if (vertexFeature.renderIntent ==
ol.layer.VectorLayerRenderIntent.TEMPORARY) {
if (ol.coordinate.equals(segment[0], vertex)) {
this.dragVertices_.push([selectionLayer, segmentData, 0]);
this.dragSegments_.push([selectionLayer, segmentData, 0]);
} else {
this.dragVertices_.push([selectionLayer, segmentData, 1]);
this.dragSegments_.push([selectionLayer, segmentData, 1]);
}
} else {
this.insertVertex_(selectionLayer, segmentData, vertex);
} else if (
ol.coordinate.squaredDistanceToSegment(vertex, segment) === 0) {
insertVertices.push([selectionLayer, segmentData, vertex]);
}
}
for (j = insertVertices.length - 1; j >= 0; --j) {
this.insertVertex_.apply(this, insertVertices[j]);
}
}
}
}
@@ -208,13 +213,13 @@ ol.interaction.Modify.prototype.handleDragStart = function(evt) {
*/
ol.interaction.Modify.prototype.handleDrag = function(evt) {
var vertex = evt.getCoordinate();
for (var i = 0, ii = this.dragVertices_.length; i < ii; ++i) {
var dragVertex = this.dragVertices_[i];
var selectionLayer = dragVertex[0];
var segmentData = dragVertex[1];
for (var i = 0, ii = this.dragSegments_.length; i < ii; ++i) {
var dragSegment = this.dragSegments_[i];
var selectionLayer = dragSegment[0];
var segmentData = dragSegment[1];
var feature = segmentData[1];
var geometry = segmentData[2];
var index = dragVertex[2];
var index = dragSegment[2];
geometry.set(segmentData[3] + index, 0, vertex[0]);
geometry.set(segmentData[3] + index, 1, vertex[1]);
feature.getGeometry().invalidateBounds();
@@ -373,14 +378,14 @@ ol.interaction.Modify.prototype.insertVertex_ =
newSegmentData.push(parent);
}
rTree.insert(ol.extent.boundingExtent(newSegment), newSegmentData, uid);
this.dragVertices_.push([selectionLayer, newSegmentData, 1]);
this.dragSegments_.push([selectionLayer, newSegmentData, 1]);
newSegment = [vertex, segment[1]];
newSegmentData = [newSegment, feature, geometry, index + 1];
if (goog.isDef(parent)) {
newSegmentData.push(parent);
}
rTree.insert(ol.extent.boundingExtent(newSegment), newSegmentData, uid);
this.dragVertices_.push([selectionLayer, newSegmentData, 0]);
this.dragSegments_.push([selectionLayer, newSegmentData, 0]);
};