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// [WriteFile Name=DensifyAndGeneralize, Category=Geometry]
// [Legal]
// Copyright 2018 Esri.
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
// http://www.apache.org/licenses/LICENSE-2.0
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
// [Legal]
import QtQuick
import QtQuick.Controls
import Esri.ArcGISRuntime
Rectangle {
id: rootRectangle
clip: true
width: 800
height: 600
MapView {
id: mapView
anchors.fill: parent
Component.onCompleted: {
// Set the focus on MapView to initially enable keyboard navigation
forceActiveFocus();
}
// Declare a map with the streets night vector basemap
Map {
Basemap {
initStyle: Enums.BasemapStyleArcGISStreetsNight
}
}
// Add a graphics overlay
GraphicsOverlay {
id: graphicsOverlay
// original multipart red graphic
Graphic {
id: originalMultipointGraphic
zIndex: 0
SimpleMarkerSymbol {
color: "red"
size: 7
style: Enums.SimpleMarkerSymbolStyleCircle
}
Component.onCompleted: {
const pointCollection = createPointCollection();
const multipointBuilder = ArcGISRuntimeEnvironment.createObject("MultipointBuilder", { spatialReference: pointCollection.spatialReference });
multipointBuilder.points = pointCollection;
originalMultipointGraphic.geometry = multipointBuilder.geometry;
mapView.setViewpointGeometryAndPadding(originalMultipointGraphic.geometry, 100);
}
}
// original red dotted line graphic
Graphic {
id: originalLineGraphic
zIndex: 1
SimpleLineSymbol {
color: "red"
style: Enums.SimpleLineSymbolStyleDot
width: 3
}
Component.onCompleted: {
const pointCollection = createPointCollection();
const polylineBuilder = ArcGISRuntimeEnvironment.createObject("PolylineBuilder", { spatialReference: pointCollection.spatialReference });
for (let i = 0; i < pointCollection.size; i++) {
polylineBuilder.addPoint(pointCollection.point(i));
}
originalLineGraphic.geometry = polylineBuilder.geometry;
}
}
// resulting (densified and generalized) multipart magenta graphic
Graphic {
id: resultMultipointGraphic
visible: showResultCheckbox.checked
zIndex: 2
SimpleMarkerSymbol {
color: "magenta"
size: 7
style: Enums.SimpleMarkerSymbolStyleCircle
}
}
// resulting (densified and generalized) multipart magenta graphic
Graphic {
id: resultPolylineGraphic
visible: showResultCheckbox.checked
zIndex: 3
SimpleLineSymbol {
color: "magenta"
width: 3
style: Enums.SimpleLineSymbolStyleSolid
}
}
}
}
function updateGeometry() {
// Get the initial Geometry
let polyline = originalLineGraphic.geometry;
if (!polyline)
return;
// Generalize the polyline
if (generalizeCheckbox.checked)
polyline = GeometryEngine.generalize(polyline, maxDeviationSlider.value, true);
// Densify the polyline
if (densifyCheckbox.checked)
polyline = GeometryEngine.densify(polyline, maxSegmentLengthSlider.value);
// Update the line graphic
resultPolylineGraphic.geometry = polyline;
// Update the multipoint graphic
const multipointBuilder = ArcGISRuntimeEnvironment.createObject("MultipointBuilder", { spatialReference: polyline.spatialReference });
const pointCollection = ArcGISRuntimeEnvironment.createObject("PointCollection", { spatialReference: polyline.spatialReference });
if (polyline.parts.size < 1)
return;
const polylinePoints = polyline.parts.part(0).points();
for (let i = 0; i < polylinePoints.size; i++) {
pointCollection.addPoint(polylinePoints.point(i));
}
multipointBuilder.points = pointCollection;
resultMultipointGraphic.geometry = multipointBuilder.geometry;
}
function createPointCollection() {
const sr = ArcGISRuntimeEnvironment.createObject("SpatialReference", {wkid: 32126});
const pointCollection = ArcGISRuntimeEnvironment.createObject("PointCollection", { spatialReference: sr });
pointCollection.addPointXYZ(2330611.130549, 202360.002957, 0.000000);
pointCollection.addPointXYZ(2330583.834672, 202525.984012, 0.000000);
pointCollection.addPointXYZ(2330574.164902, 202691.488009, 0.000000);
pointCollection.addPointXYZ(2330689.292623, 203170.045888, 0.000000);
pointCollection.addPointXYZ(2330696.773344, 203317.495798, 0.000000);
pointCollection.addPointXYZ(2330691.419723, 203380.917080, 0.000000);
pointCollection.addPointXYZ(2330435.065296, 203816.662457, 0.000000);
pointCollection.addPointXYZ(2330369.500800, 204329.861789, 0.000000);
pointCollection.addPointXYZ(2330400.929891, 204712.129673, 0.000000);
pointCollection.addPointXYZ(2330484.300447, 204927.797132, 0.000000);
pointCollection.addPointXYZ(2330514.469919, 205000.792463, 0.000000);
pointCollection.addPointXYZ(2330638.099138, 205271.601116, 0.000000);
pointCollection.addPointXYZ(2330725.315888, 205631.231308, 0.000000);
pointCollection.addPointXYZ(2330755.640702, 206433.354860, 0.000000);
pointCollection.addPointXYZ(2330680.644719, 206660.240923, 0.000000);
pointCollection.addPointXYZ(2330386.957926, 207340.947204, 0.000000);
pointCollection.addPointXYZ(2330485.861737, 207742.298501, 0.000000);
return pointCollection;
}
Rectangle {
anchors {
fill: controlColumn
margins: -5
}
color: "#f9f9f9"
radius: 5
}
Column {
id: controlColumn
anchors {
left: parent.left
top: parent.top
margins: 10
}
spacing: 5
CheckBox {
id: densifyCheckbox
text: "Densify"
checked: true
}
Text {
text: "Max segment length"
enabled: densifyCheckbox.checked
}
Slider {
id: maxSegmentLengthSlider
from: 100
to: 500
width: 175
value: 100
onValueChanged: updateGeometry();
}
CheckBox {
id: generalizeCheckbox
text: "Generalize"
checked: true
}
Text {
text: "Max deviation"
enabled: generalizeCheckbox.checked
}
Slider {
id: maxDeviationSlider
from: 1
to: 250
width: 175
onValueChanged: updateGeometry();
}
CheckBox {
id: showResultCheckbox
text: "Show Result"
checked: true
}
}
}