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Added circle drawing to draw interaction.

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This commit is contained in:
Christopher S. Case
2015-02-10 12:02:56 -06:00
parent a924cc4d11
commit ae8321ab30
2 changed files with 30 additions and 4 deletions
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27
src/ol/interaction/drawinteraction.js
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@@ -13,6 +13,7 @@ goog.require('ol.MapBrowserEvent');
goog.require('ol.MapBrowserEvent.EventType');
goog.require('ol.Object');
goog.require('ol.events.condition');
goog.require('ol.geom.Circle');
goog.require('ol.geom.GeometryType');
goog.require('ol.geom.LineString');
goog.require('ol.geom.MultiLineString');
@@ -294,6 +295,8 @@ ol.interaction.Draw.handleUpEvent_ = function(event) {
if (goog.isNull(this.finishCoordinate_)) {
this.startDrawing_(event);
} else if (this.mode_ === ol.interaction.DrawMode.POINT ||
this.mode_ === ol.interaction.DrawMode.CIRCLE &&
!goog.isNull(this.finishCoordinate_) ||
this.atFinish_(event)) {
this.finishDrawing();
} else {
@@ -402,6 +405,10 @@ ol.interaction.Draw.prototype.startDrawing_ = function(event) {
start.slice()]));
this.sketchPolygonCoords_ = [[start.slice(), start.slice()]];
geometry = new ol.geom.Polygon(this.sketchPolygonCoords_);
} else if (this.mode_ === ol.interaction.DrawMode.CIRCLE) {
geometry = new ol.geom.Circle(start.slice(), 1000);
this.sketchLine_ = new ol.Feature(new ol.geom.LineString([start.slice(),
start.slice()]));
}
}
goog.asserts.assert(goog.isDef(geometry));
@@ -424,7 +431,7 @@ ol.interaction.Draw.prototype.startDrawing_ = function(event) {
ol.interaction.Draw.prototype.modifyDrawing_ = function(event) {
var coordinate = event.coordinate;
var geometry = this.sketchFeature_.getGeometry();
var coordinates, last;
var coordinates, last, sketchLineGeom;
if (this.mode_ === ol.interaction.DrawMode.POINT) {
goog.asserts.assertInstanceof(geometry, ol.geom.Point);
last = geometry.getCoordinates();
@@ -438,6 +445,9 @@ ol.interaction.Draw.prototype.modifyDrawing_ = function(event) {
} else if (this.mode_ === ol.interaction.DrawMode.POLYGON) {
goog.asserts.assertInstanceof(geometry, ol.geom.Polygon);
coordinates = this.sketchPolygonCoords_[0];
} else if (this.mode_ === ol.interaction.DrawMode.CIRCLE) {
goog.asserts.assertInstanceof(geometry, ol.geom.Circle);
coordinates = geometry.getCenter();
}
if (this.atFinish_(event)) {
// snap to finish
@@ -453,11 +463,17 @@ ol.interaction.Draw.prototype.modifyDrawing_ = function(event) {
goog.asserts.assertInstanceof(geometry, ol.geom.LineString);
geometry.setCoordinates(coordinates);
} else if (this.mode_ === ol.interaction.DrawMode.POLYGON) {
var sketchLineGeom = this.sketchLine_.getGeometry();
sketchLineGeom = this.sketchLine_.getGeometry();
goog.asserts.assertInstanceof(sketchLineGeom, ol.geom.LineString);
sketchLineGeom.setCoordinates(coordinates);
goog.asserts.assertInstanceof(geometry, ol.geom.Polygon);
geometry.setCoordinates(this.sketchPolygonCoords_);
} else if (this.mode_ === ol.interaction.DrawMode.CIRCLE) {
goog.asserts.assertInstanceof(geometry, ol.geom.Circle);
sketchLineGeom = this.sketchLine_.getGeometry();
goog.asserts.assertInstanceof(sketchLineGeom, ol.geom.LineString);
sketchLineGeom.setCoordinates([geometry.getCenter(), coordinate]);
geometry.setRadius(sketchLineGeom.getLength());
}
}
this.updateSketchFeatures_();
@@ -561,7 +577,7 @@ ol.interaction.Draw.prototype.shouldStopEvent = goog.functions.FALSE;
/**
* Redraw the skecth features.
* Redraw the sketch features.
* @private
*/
ol.interaction.Draw.prototype.updateSketchFeatures_ = function() {
@@ -610,6 +626,8 @@ ol.interaction.Draw.getMode_ = function(type) {
} else if (type === ol.geom.GeometryType.POLYGON ||
type === ol.geom.GeometryType.MULTI_POLYGON) {
mode = ol.interaction.DrawMode.POLYGON;
} else if (type === ol.geom.GeometryType.CIRCLE) {
mode = ol.interaction.DrawMode.CIRCLE;
}
goog.asserts.assert(goog.isDef(mode));
return mode;
@@ -624,5 +642,6 @@ ol.interaction.Draw.getMode_ = function(type) {
ol.interaction.DrawMode = {
POINT: 'Point',
LINE_STRING: 'LineString',
POLYGON: 'Polygon'
POLYGON: 'Polygon',
CIRCLE: 'Circle'
};