Draw interaction
This commit is contained in:
Tim Schaub
50
examples/draw-features.html
Normal file
50
examples/draw-features.html
Normal file
@@ -0,0 +1,50 @@
|
||||
<!doctype html>
|
||||
<html lang="en">
|
||||
<head>
|
||||
<meta charset="utf-8">
|
||||
<meta http-equiv="X-UA-Compatible" content="chrome=1">
|
||||
<meta name="viewport" content="initial-scale=1.0, user-scalable=no, width=device-width">
|
||||
<link rel="stylesheet" href="../css/ol.css" type="text/css">
|
||||
<link rel="stylesheet" href="../resources/bootstrap/css/bootstrap.min.css" type="text/css">
|
||||
<link rel="stylesheet" href="../resources/layout.css" type="text/css">
|
||||
<link rel="stylesheet" href="../resources/bootstrap/css/bootstrap-responsive.min.css" type="text/css">
|
||||
<title>Draw features example</title>
|
||||
</head>
|
||||
<body>
|
||||
|
||||
<div class="navbar navbar-inverse navbar-fixed-top">
|
||||
<div class="navbar-inner">
|
||||
<div class="container">
|
||||
<a class="brand" href="./"><img src="../resources/logo.png"> OpenLayers 3 Examples</a>
|
||||
</div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="container-fluid">
|
||||
|
||||
<div class="row-fluid">
|
||||
<div class="span12">
|
||||
<div id="map" class="map"></div>
|
||||
</div>
|
||||
</div>
|
||||
|
||||
<div class="row-fluid">
|
||||
|
||||
<div class="span12">
|
||||
<h4 id="title">Draw features example</h4>
|
||||
<p id="shortdesc">Example of using the Draw interaction.</p>
|
||||
<div id="docs">
|
||||
<p>See the <a href="draw-features.js" target="_blank">draw-features.js source</a> to see how this is done.</p>
|
||||
</div>
|
||||
<div id="tags">draw, edit, vector</div>
|
||||
</div>
|
||||
|
||||
</div>
|
||||
|
||||
</div>
|
||||
|
||||
<script src="loader.js?id=draw-features" type="text/javascript"></script>
|
||||
<script src="../resources/example-behaviour.js" type="text/javascript"></script>
|
||||
|
||||
</body>
|
||||
</html>
|
||||
92
examples/draw-features.js
Normal file
92
examples/draw-features.js
Normal file
@@ -0,0 +1,92 @@
|
||||
goog.require('ol.Map');
|
||||
goog.require('ol.RendererHint');
|
||||
goog.require('ol.View2D');
|
||||
goog.require('ol.interaction');
|
||||
goog.require('ol.interaction.Draw');
|
||||
goog.require('ol.layer.Tile');
|
||||
goog.require('ol.layer.Vector');
|
||||
goog.require('ol.source.MapQuestOpenAerial');
|
||||
goog.require('ol.source.Vector');
|
||||
goog.require('ol.style.Fill');
|
||||
goog.require('ol.style.Rule');
|
||||
goog.require('ol.style.Shape');
|
||||
goog.require('ol.style.Stroke');
|
||||
goog.require('ol.style.Style');
|
||||
|
||||
var raster = new ol.layer.Tile({
|
||||
source: new ol.source.MapQuestOpenAerial()
|
||||
});
|
||||
|
||||
var vector = new ol.layer.Vector({
|
||||
source: new ol.source.Vector({parser: null}),
|
||||
style: new ol.style.Style({
|
||||
rules: [
|
||||
new ol.style.Rule({
|
||||
filter: 'renderIntent("selected")',
|
||||
symbolizers: [
|
||||
new ol.style.Shape({
|
||||
fill: new ol.style.Fill({
|
||||
color: '#0099ff',
|
||||
opacity: 1
|
||||
}),
|
||||
size: 16
|
||||
}),
|
||||
new ol.style.Fill({
|
||||
color: '#ffffff',
|
||||
opacity: 0.5
|
||||
}),
|
||||
new ol.style.Stroke({
|
||||
color: '#0099ff',
|
||||
width: 3
|
||||
})
|
||||
]
|
||||
}),
|
||||
new ol.style.Rule({
|
||||
filter: 'renderIntent("temporary")',
|
||||
symbolizers: [
|
||||
new ol.style.Shape({
|
||||
fill: new ol.style.Fill({
|
||||
color: '#0033ff',
|
||||
opacity: 1
|
||||
}),
|
||||
size: 16,
|
||||
zIndex: 1
|
||||
})
|
||||
]
|
||||
})
|
||||
],
|
||||
symbolizers: [
|
||||
new ol.style.Shape({
|
||||
fill: new ol.style.Fill({
|
||||
color: '#0033ff',
|
||||
opacity: 1
|
||||
}),
|
||||
size: 16
|
||||
}),
|
||||
new ol.style.Fill({
|
||||
color: '#ffffff',
|
||||
opacity: 0.2
|
||||
}),
|
||||
new ol.style.Stroke({
|
||||
color: '#ffcc33',
|
||||
width: 1.5
|
||||
})
|
||||
]
|
||||
})
|
||||
});
|
||||
|
||||
var draw = new ol.interaction.Draw({
|
||||
layer: vector,
|
||||
mode: /** @type {ol.interaction.DrawMode} */ ('polygon')
|
||||
});
|
||||
|
||||
var map = new ol.Map({
|
||||
interactions: ol.interaction.defaults().extend([draw]),
|
||||
layers: [raster, vector],
|
||||
renderer: ol.RendererHint.CANVAS,
|
||||
target: 'map',
|
||||
view: new ol.View2D({
|
||||
center: [-11000000, 4600000],
|
||||
zoom: 4
|
||||
})
|
||||
});
|
||||
@@ -341,6 +341,14 @@
|
||||
* @todo stability experimental
|
||||
*/
|
||||
|
||||
/**
|
||||
* @typedef {Object} ol.interaction.DrawOptions
|
||||
* @property {ol.layer.Vector} layer Destination layer for the features.
|
||||
* @property {ol.interaction.DrawMode} mode Drawing mode ('point', 'linestring',
|
||||
* or 'polygon').
|
||||
* @todo stability experimental
|
||||
*/
|
||||
|
||||
/**
|
||||
* @typedef {Object} ol.interaction.KeyboardPanOptions
|
||||
* @property {ol.events.ConditionType|undefined} condition A conditional
|
||||
|
||||
1
src/ol/interaction/drawinteraction.exports
Normal file
1
src/ol/interaction/drawinteraction.exports
Normal file
@@ -0,0 +1 @@
|
||||
@exportClass ol.interaction.Draw ol.interaction.DrawOptions
|
||||
286
src/ol/interaction/drawinteraction.js
Normal file
286
src/ol/interaction/drawinteraction.js
Normal file
@@ -0,0 +1,286 @@
|
||||
goog.provide('ol.interaction.Draw');
|
||||
goog.provide('ol.interaction.DrawMode');
|
||||
|
||||
goog.require('goog.asserts');
|
||||
|
||||
goog.require('ol.Coordinate');
|
||||
goog.require('ol.Feature');
|
||||
goog.require('ol.Map');
|
||||
goog.require('ol.MapBrowserEvent');
|
||||
goog.require('ol.MapBrowserEvent.EventType');
|
||||
goog.require('ol.geom.LineString');
|
||||
goog.require('ol.geom.Point');
|
||||
goog.require('ol.geom.Polygon');
|
||||
goog.require('ol.interaction.Interaction');
|
||||
goog.require('ol.layer.Vector');
|
||||
goog.require('ol.layer.VectorLayerRenderIntent');
|
||||
goog.require('ol.source.Vector');
|
||||
|
||||
|
||||
|
||||
/**
|
||||
* Interaction that allows drawing geometries.
|
||||
* @param {ol.interaction.DrawOptions} options Options.
|
||||
* @constructor
|
||||
* @extends {ol.interaction.Interaction}
|
||||
*/
|
||||
ol.interaction.Draw = function(options) {
|
||||
goog.base(this);
|
||||
|
||||
/**
|
||||
* Target layer for drawn features.
|
||||
* @type {ol.layer.Vector}
|
||||
* @private
|
||||
*/
|
||||
this.layer_ = options.layer;
|
||||
|
||||
/**
|
||||
* Temporary sketch layer.
|
||||
* @type {ol.layer.Vector}
|
||||
* @private
|
||||
*/
|
||||
this.sketchLayer_ = null;
|
||||
|
||||
/**
|
||||
* Pixel distance for snapping.
|
||||
* @type {number}
|
||||
* @private
|
||||
*/
|
||||
this.snapTolerance_ = 15;
|
||||
|
||||
/**
|
||||
* Draw mode.
|
||||
* @type {ol.interaction.DrawMode}
|
||||
* @private
|
||||
*/
|
||||
this.mode_ = options.mode;
|
||||
|
||||
/**
|
||||
* Start coordinate for the feature.
|
||||
* @type {ol.Coordinate}
|
||||
* @private
|
||||
*/
|
||||
this.startCoordinate_ = null;
|
||||
|
||||
/**
|
||||
* Sketch feature.
|
||||
* @type {ol.Feature}
|
||||
* @private
|
||||
*/
|
||||
this.sketchFeature_ = null;
|
||||
|
||||
};
|
||||
goog.inherits(ol.interaction.Draw, ol.interaction.Interaction);
|
||||
|
||||
|
||||
/**
|
||||
* @inheritDoc
|
||||
*/
|
||||
ol.interaction.Draw.prototype.setMap = function(map) {
|
||||
var oldMap = this.getMap();
|
||||
if (!goog.isNull(oldMap)) {
|
||||
oldMap.removeLayer(this.sketchLayer_);
|
||||
}
|
||||
|
||||
if (!goog.isNull(map)) {
|
||||
if (goog.isNull(this.sketchLayer_)) {
|
||||
var layer = new ol.layer.Vector({
|
||||
source: new ol.source.Vector({parser: null}),
|
||||
style: this.layer_.getStyle()
|
||||
});
|
||||
layer.setTemporary(true);
|
||||
this.sketchLayer_ = layer;
|
||||
}
|
||||
map.addLayer(this.sketchLayer_);
|
||||
} else {
|
||||
// removing from a map, clean up
|
||||
this.sketchLayer_ = null;
|
||||
this.startCoordinate_ = null;
|
||||
this.sketchFeature_ = null;
|
||||
}
|
||||
|
||||
goog.base(this, 'setMap', map);
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* @inheritDoc
|
||||
*/
|
||||
ol.interaction.Draw.prototype.handleMapBrowserEvent = function(event) {
|
||||
var map = event.map;
|
||||
if (!map.isDef()) {
|
||||
return true;
|
||||
}
|
||||
var pass = true;
|
||||
if (event.type === ol.MapBrowserEvent.EventType.CLICK) {
|
||||
pass = this.handleClick_(event);
|
||||
} else if (event.type === ol.MapBrowserEvent.EventType.MOUSEMOVE) {
|
||||
pass = this.handleMove_(event);
|
||||
}
|
||||
return pass;
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* Handle click events.
|
||||
* @param {ol.MapBrowserEvent} event A click event.
|
||||
* @return {boolean} Pass the event to other interactions.
|
||||
* @private
|
||||
*/
|
||||
ol.interaction.Draw.prototype.handleClick_ = function(event) {
|
||||
if (goog.isNull(this.startCoordinate_)) {
|
||||
this.startDrawing_(event);
|
||||
} else if (this.mode_ === ol.interaction.DrawMode.POINT ||
|
||||
this.atStart_(event)) {
|
||||
this.finishDrawing_(event);
|
||||
} else {
|
||||
this.addToDrawing_(event);
|
||||
}
|
||||
return false;
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* Handle mousemove events.
|
||||
* @param {ol.MapBrowserEvent} event A mousemove event.
|
||||
* @return {boolean} Pass the event to other interactions.
|
||||
* @private
|
||||
*/
|
||||
ol.interaction.Draw.prototype.handleMove_ = function(event) {
|
||||
if (this.mode_ === ol.interaction.DrawMode.POINT &&
|
||||
goog.isNull(this.startCoordinate_)) {
|
||||
this.startDrawing_(event);
|
||||
} else if (!goog.isNull(this.startCoordinate_)) {
|
||||
this.modifyDrawing_(event);
|
||||
}
|
||||
return true;
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* Determine if an event is within the snapping tolerance of the start coord.
|
||||
* @param {ol.MapBrowserEvent} event Event.
|
||||
* @return {boolean} The event is within the snapping tolerance of the start.
|
||||
* @private
|
||||
*/
|
||||
ol.interaction.Draw.prototype.atStart_ = function(event) {
|
||||
var map = event.map;
|
||||
var startPixel = map.getPixelFromCoordinate(this.startCoordinate_);
|
||||
var pixel = event.getPixel();
|
||||
var dx = pixel[0] - startPixel[0];
|
||||
var dy = pixel[1] - startPixel[1];
|
||||
return Math.sqrt(dx * dx + dy * dy) <= this.snapTolerance_;
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* Start the drawing.
|
||||
* @param {ol.MapBrowserEvent} event Event.
|
||||
* @private
|
||||
*/
|
||||
ol.interaction.Draw.prototype.startDrawing_ = function(event) {
|
||||
var start = event.getCoordinate();
|
||||
this.startCoordinate_ = start;
|
||||
var feature = new ol.Feature();
|
||||
feature.setRenderIntent(ol.layer.VectorLayerRenderIntent.SELECTED);
|
||||
var geometry;
|
||||
if (this.mode_ === ol.interaction.DrawMode.POINT) {
|
||||
geometry = new ol.geom.Point(start.slice());
|
||||
} else if (this.mode_ === ol.interaction.DrawMode.LINESTRING) {
|
||||
geometry = new ol.geom.LineString([start.slice(), start.slice()]);
|
||||
} else if (this.mode_ === ol.interaction.DrawMode.POLYGON) {
|
||||
geometry = new ol.geom.Polygon([[start.slice(), start.slice()]]);
|
||||
}
|
||||
goog.asserts.assert(goog.isDef(geometry));
|
||||
feature.setGeometry(geometry);
|
||||
this.sketchFeature_ = feature;
|
||||
this.sketchLayer_.addFeatures([feature]);
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* Modify the drawing.
|
||||
* @param {ol.MapBrowserEvent} event Event.
|
||||
* @private
|
||||
*/
|
||||
ol.interaction.Draw.prototype.modifyDrawing_ = function(event) {
|
||||
var coordinate = event.getCoordinate();
|
||||
var geometry = this.sketchFeature_.getGeometry();
|
||||
var coordinates, last;
|
||||
if (this.mode_ === ol.interaction.DrawMode.POINT) {
|
||||
last = geometry.getCoordinates();
|
||||
last[0] = coordinate[0];
|
||||
last[1] = coordinate[1];
|
||||
geometry.setCoordinates(last);
|
||||
} else if (this.mode_ === ol.interaction.DrawMode.LINESTRING) {
|
||||
coordinates = geometry.getCoordinates();
|
||||
last = coordinates[coordinates.length - 1];
|
||||
last[0] = coordinate[0];
|
||||
last[1] = coordinate[1];
|
||||
geometry.setCoordinates(coordinates);
|
||||
} else if (this.mode_ === ol.interaction.DrawMode.POLYGON) {
|
||||
var ring = geometry.getRings()[0];
|
||||
coordinates = ring.getCoordinates();
|
||||
last = coordinates[coordinates.length - 1];
|
||||
last[0] = coordinate[0];
|
||||
last[1] = coordinate[1];
|
||||
ring.setCoordinates(coordinates);
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* Add a new coordinate to the drawing.
|
||||
* @param {ol.MapBrowserEvent} event Event.
|
||||
* @private
|
||||
*/
|
||||
ol.interaction.Draw.prototype.addToDrawing_ = function(event) {
|
||||
var coordinate = event.getCoordinate();
|
||||
var geometry = this.sketchFeature_.getGeometry();
|
||||
var coordinates, last;
|
||||
if (this.mode_ === ol.interaction.DrawMode.LINESTRING) {
|
||||
coordinates = geometry.getCoordinates();
|
||||
coordinates.push(coordinate.slice());
|
||||
geometry.setCoordinates(coordinates);
|
||||
} else if (this.mode_ === ol.interaction.DrawMode.POLYGON) {
|
||||
var ring = geometry.getRings()[0];
|
||||
coordinates = ring.getCoordinates();
|
||||
coordinates.push(coordinate.slice());
|
||||
ring.setCoordinates(coordinates);
|
||||
}
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* Finish the drawing.
|
||||
* @param {ol.MapBrowserEvent} event Event.
|
||||
* @private
|
||||
*/
|
||||
ol.interaction.Draw.prototype.finishDrawing_ = function(event) {
|
||||
this.startCoordinate_ = null;
|
||||
var feature = this.sketchFeature_;
|
||||
this.sketchLayer_.removeFeatures([feature]);
|
||||
feature.setRenderIntent(ol.layer.VectorLayerRenderIntent.DEFAULT);
|
||||
this.layer_.addFeatures([feature]);
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* Set the drawing mode.
|
||||
* @param {ol.interaction.DrawMode} mode Draw mode ('point', 'linestring', or
|
||||
* 'polygon').
|
||||
*/
|
||||
ol.interaction.Draw.prototype.setMode = function(mode) {
|
||||
this.mode_ = mode;
|
||||
};
|
||||
|
||||
|
||||
/**
|
||||
* Draw mode.
|
||||
* @enum {string}
|
||||
*/
|
||||
ol.interaction.DrawMode = {
|
||||
POINT: 'point',
|
||||
LINESTRING: 'linestring',
|
||||
POLYGON: 'polygon'
|
||||
};
|
||||
Reference in New Issue
Block a user