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index.html
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<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1.0">
<title>Openlayer Grid</title>
<!-- Openlayers -->
<link rel="stylesheet" href="https://cdn.jsdelivr.net/npm/ol@latest/ol.css" />
<script type="text/javascript" src="https://cdn.jsdelivr.net/npm/ol@latest/dist/ol.js"></script>
<script
src="https://cdn.polyfill.io/v2/polyfill.min.js?features=requestAnimationFrame,Element.prototype.classList,URL,Object.assign"></script>
<!-- ol-ext -->
<link rel="stylesheet" href="./dist/ol-ext.css" />
<script type="text/javascript" src="./dist/ol-ext.js"></script>
<!-- Pointer events polyfill for old browsers, see https://caniuse.com/#feat=pointer -->
<script src="https://unpkg.com/elm-pep"></script>
</head>
<body style="width: 100%;height: 100%;">
<!-- Map div -->
<div id="map" style="width:100%; height:100vh; margin: 0px; padding: 0px;"></div>
<div className="rectangle" style="display: grid; position: absolute; top: 80px; left: 20px;">
<button onClick="handle()" id="handle">Activate Draw</button>
<button onClick="handleButtonValid()" style="margin-top: 5px; "> Valide</button>
</div>
<div className="rectangle" style="display: grid; position: absolute; top: 30px; left: 500px;">
<div>
<span>Grid Size</span>
<input type="number" style="text-align: center; margin-right: 5px;" id="myInput" value="10"
onchange="onInputChange(this)" />
<span>m</span>
</div>
<div style="margin-top: 2px;">
<span style="margin-right: 5px;">Grid mode</span>
<select id="select" value={selectedOption} onchange='handleSelectChange(this)'>
<option value="TRAlign">Top->Right align</option>
<option value="TLAlign">Top->Left align</option>
<option selected value="BLAlign">Bottom->Left align</option>
<option value="BRAlign">Bottom->Right align</option>
</select>
</div>
</div>
<script type="text/javascript">
var drawActive = false;
var drawFeature = null;
var rectangle = null;
var rectCoordinates = null;
var rectgridLayer = null;
var extent = null;
var interaction = null;
var value = 10;
var draw = null;
var startangle = 0;
var startRadius = 10;
var d = [0, 0];
var option = 'BLAlign';
const map = new ol.Map({
target: 'map',
layers: [
new ol.layer.Tile({
source: new ol.source.OSM(),
}),
],
view: new ol.View({
center: [261720, 5951081],
zoom: 18,
}),
});
const source = new ol.source.Vector();
const vector = new ol.layer.Vector({
source,
style: new ol.style.Style({
fill: new ol.style.Fill({
color: 'rgba(255, 255, 255, 0.2)',
}),
stroke: new ol.style.Stroke({
color: '#ffcc33',
width: 2,
}),
}),
name: 'RectLayer'
});
map.addLayer(vector);
function buttonTextChange(flag = false) {
drawActive = !drawActive;
if (drawActive) {
document.getElementById('handle').textContent = "Deactivat Draw";
}
else {
document.getElementById('handle').textContent = "Activat Draw";
map.removeInteraction(draw);
draw = null;
}
}
function handle() {
// let draw;
buttonTextChange(false);
if (!drawActive) return;
if (rectgridLayer) {
map.removeLayer(rectgridLayer);
rectgridLayer = null;
vector.getSource().removeFeature(drawFeature);
}
if (interaction) {
map.removeInteraction(interaction);
interaction = null;
}
draw = new ol.interaction.Draw({
source: source,
type: 'Circle',
geometryFunction: ol.interaction.Draw.createBox(),
});
map.addInteraction(draw);
draw.on('drawend', (event) => {
console.log('drawend')
const feature = event.feature;
const geometry = feature.getGeometry();
const extent = geometry.getExtent();
const width = extent[2] - extent[0];
const height = extent[3] - extent[1];
drawFeature = feature;
if (width < 300 && height < 300) {
drawFeature = feature;
buttonTextChange(true);
} else {
alert('Rectangle must be less than 300x300m');
vector.getSource().removeFeature(feature);
return;
}
interaction = new ol.interaction.Transform({
enableRotatedTransform: false,
addCondition: ol.events.condition.shiftKeyOnly,
hitTolerance: 2,
translateFeature: true,
scale: true,
rotate: true,
keepAspectRatio: false,
translate: true,
keepRectangle: true,
stretch: true,
pointRadius: function (f) {
var radius = f.get('radius') || 10;
return [radius, radius];
}
});
map.addInteraction(interaction);
interaction.set('translate', interaction.get('translate'));
interaction.on(['rotatestart', 'translatestart', 'scalestart'], function (e) {
startangle = e.feature.get('angle') || 0;
startRadius = e.feature.get('radius') || 10;
d = [0, 0];
});
interaction.on('rotating', function (e) {
e.feature.set('angle', startangle - e.angle);
});
interaction.on('translating', function (e) {
d[0] += e.delta[0];
d[1] += e.delta[1];
});
interaction.on('scaling', function (e) {
if (e.features.getLength() === 1) {
var feature = e.features.item(0);
feature.set('radius', startRadius * Math.abs(e.scale[0]));
}
});
interaction.on(['rotateend', 'translateend', 'scaleend'], function (e) {
drawFeature = (e.features.getArray()[0]);
});
});
};
function handleButtonValid() {
if (interaction) {
map.removeInteraction(interaction);
interaction = (null);
}
if (drawFeature) {
const layers = map.getLayers();
const extent = drawFeature.getGeometry().getExtent();
// layers.forEach(layer => {
// if (layer instanceof ol.source.Vector) {
// console.log('Found vector layer:', layer);
// }
// });
const gridStyle = new ol.style.Style({
image: new ol.style.Circle({
fill: new ol.style.Fill({
color: 'red',
}),
stroke: new ol.style.Stroke({
color: 'black',
width: 2,
}),
radius: 8,
}),
stroke: new ol.style.Stroke({
color: 'blue',
width: 2,
}),
text: new ol.style.Text({
fill: new ol.style.Fill({
color: 'rgba(255, 0, 0, 1)'
}),
font: '12px sans-serif',
textBaseline: 'bottom',
text: 'label'
})
});
const gridSource = new ol.source.Vector();
const gridLayer = new ol.layer.Vector({
source: gridSource,
style: function (feature) {
const fill = new ol.style.Fill({
color: 'rgba(255, 0, 0, 0.2)'
});
const stroke = new ol.style.Stroke({
color: 'blue',
width: 2
});
const text = new ol.style.Text({
fill: new ol.style.Fill({
color: 'rgba(255, 0, 0, 1)'
}),
font: '12px sans-serif',
textBaseline: 'center',
text: feature.get('text')
});
return new ol.style.Style({
fill: fill,
stroke: stroke,
text: text,
image: new ol.style.Circle({
radius: 6,
fill: new ol.style.Fill({
color: 'red'
}),
stroke: new ol.style.Stroke({
color: 'black',
width: 2
})
})
});
}
});
map.addLayer(gridLayer);
rectgridLayer = (gridLayer);
map.on('click', function (event) {
const clickedCoordinates = event.coordinate;
console.log(clickedCoordinates);
if (!drawFeature) return;
const rectangleCoordinates = drawFeature.getGeometry().getCoordinates()[0];
const rectwidth = rectangleCoordinates[1][0] - rectangleCoordinates[0][0];
const rectheight = rectangleCoordinates[3][1] - rectangleCoordinates[0][1];
const cellWidth1 = value
const cellHeight1 = value
const numCols1 = (rectwidth / value);
const numRows1 = (rectheight / value);
const cellWidth_temp = (rectangleCoordinates[1][1] - rectangleCoordinates[0][1]) / numCols1;
const cellHeight_temp = (rectangleCoordinates[3][0] - rectangleCoordinates[0][0]) / numRows1;
for (let i = 1; i <= parseInt(numCols1); i++) {
for (let j = 1; j <= parseInt(numRows1); j++) {
if (option == 'BLAlign') {
// Calculate the coordinates of the current grid cell
const cellTopLeft = [
rectangleCoordinates[0][0] - cellWidth_temp * (j) + cellWidth1 * (i - 1),
rectangleCoordinates[0][1] + cellHeight1 * (j) - cellHeight_temp * (i - 1)
];
const cellBottomRight = [
rectangleCoordinates[0][0] - cellWidth_temp * (j - 1) + cellWidth1 * i,
rectangleCoordinates[0][1] + cellHeight1 * (j - 1) - cellHeight_temp * i
];
const cellTopRight = [
rectangleCoordinates[0][0] - cellWidth_temp * (j) + cellWidth1 * (i),
rectangleCoordinates[0][1] + cellHeight1 * (j) - cellHeight_temp * (i)
];
// Draw a new rectangle with the top-left corner of the grid cell as the starting point
const cellBottomLeft = [
rectangleCoordinates[0][0] - cellWidth_temp * (j - 1) + cellWidth1 * (i - 1),
rectangleCoordinates[0][1] + cellHeight1 * (j - 1) - cellHeight_temp * (i - 1)
];
const tempolygon = new ol.geom.Polygon(
[
[
cellBottomLeft,
cellTopLeft,
cellTopRight,
cellBottomRight,
cellBottomLeft
]
]
);
// Check if the point is inside the rotated rectangle
var isInside = tempolygon.intersectsCoordinate(clickedCoordinates);
// console.log('isInside', isInside);
// Check if the clicked coordinates fall within the current grid cell
if (isInside) {
const cellIndex = (i - 1) * parseInt(numRows1) + parseInt(j);
const cellRectangle = new ol.Feature(
{
geometry: new ol.geom.Polygon([
[
cellBottomLeft,
cellTopLeft,
cellTopRight,
cellBottomRight,
cellBottomLeft
]
]),
text: cellIndex.toString(),
}
);
console.log(cellRectangle);
gridSource.addFeature(cellRectangle);
// The clicked point is within this grid cell
console.log('Clicked on cell:', i, j);
console.log('Clicked on cell:', (i - 1) * numCols1 + j);
break;
}
}
if (option == 'BRAlign') {
const cellTopLeft = [
rectangleCoordinates[1][0] - cellWidth_temp * (j) - cellWidth1 * (i),
rectangleCoordinates[1][1] + cellHeight1 * (j) + cellHeight_temp * (i)
];
const cellTopRight = [
rectangleCoordinates[1][0] - cellWidth_temp * (j) - cellWidth1 * (i-1),
rectangleCoordinates[1][1] + cellHeight1 * (j) + cellHeight_temp * (i-1)
];
const cellBottomRight = [
rectangleCoordinates[1][0] - cellWidth_temp * (j-1) - cellWidth1 * (i-1),
rectangleCoordinates[1][1] + cellHeight1 * (j-1) + cellHeight_temp * (i-1)
];
const cellBottomLeft = [
rectangleCoordinates[1][0] - cellWidth_temp * (j-1) - cellWidth1 * (i),
rectangleCoordinates[1][1] + cellHeight1 * (j-1) + cellHeight_temp * (i)
];
const tempolygon = new ol.geom.Polygon(
[
[
cellBottomLeft,
cellTopLeft,
cellTopRight,
cellBottomRight,
cellBottomLeft
]
]
);
// Check if the point is inside the rotated rectangle
var isInside = tempolygon.intersectsCoordinate(clickedCoordinates);
// console.log('isInside', isInside);
// Check if the clicked coordinates fall within the current grid cell
if (isInside) {
const cellIndex = (i - 1) * parseInt(numRows1) + parseInt(j);
const cellRectangle = new ol.Feature(
{
geometry: new ol.geom.Polygon([
[
cellBottomLeft,
cellTopLeft,
cellTopRight,
cellBottomRight,
cellBottomLeft
]
]),
text: cellIndex.toString(),
}
);
console.log(cellRectangle);
gridSource.addFeature(cellRectangle);
// The clicked point is within this grid cell
console.log('Clicked on cell:', i, j);
console.log('Clicked on cell:', (i - 1) * numCols1 + j);
break;
}
}
else if (option === 'TLAlign') {
const topLeft = [rectangleCoordinates[3][0] + cellWidth_temp * (j - 1) + cellWidth1 * (i - 1), rectangleCoordinates[3][1] - cellHeight1 * (j - 1) - cellHeight_temp * (i - 1)];
const bottomRight = [rectangleCoordinates[3][0] + cellWidth_temp * j + cellWidth1 * i, rectangleCoordinates[3][1] - cellHeight1 * j - cellHeight_temp * i];
const cellTopLeft = [
rectangleCoordinates[3][0] + cellWidth_temp * (j) + cellWidth1 * (i - 1),
rectangleCoordinates[3][1] - cellHeight1 * (j) - cellHeight_temp * (i - 1)
];
const cellBottomRight = [
rectangleCoordinates[3][0] + cellWidth_temp * (j - 1) + cellWidth1 * (i),
rectangleCoordinates[3][1] - cellHeight1 * (j - 1) - cellHeight_temp * (i)
];
const tempolygon = new ol.geom.Polygon([
[
cellTopLeft,
topLeft,
cellBottomRight,
bottomRight,
cellTopLeft
]
]);
// Check if the point is inside the rotated rectangle
var isInside = tempolygon.intersectsCoordinate(clickedCoordinates);
// console.log('isInside', isInside);
if (isInside) {
const cellIndex = (i - 1) * parseInt(numRows1) + parseInt(j);
const cellRectangle = new ol.Feature({
geometry: new ol.geom.Polygon([
[
cellTopLeft,
topLeft,
cellBottomRight,
bottomRight,
cellTopLeft
]
]),
text: cellIndex.toString(),
});
gridSource.addFeature(cellRectangle);
break;
}
}
else if (option === 'TRAlign') {
const cellTopLeft = [
rectangleCoordinates[2][0] + cellWidth_temp * (j-1) - cellWidth1 * (i),
rectangleCoordinates[2][1] - cellHeight1 * (j-1) + cellHeight_temp * (i)
];
const cellTopRight = [
rectangleCoordinates[2][0] + cellWidth_temp * (j-1) - cellWidth1 * (i-1),
rectangleCoordinates[2][1] - cellHeight1 * (j-1) + cellHeight_temp * (i-1)
];
const cellBottomRight = [
rectangleCoordinates[2][0] + cellWidth_temp * (j) - cellWidth1 * (i-1),
rectangleCoordinates[2][1] - cellHeight1 * (j) + cellHeight_temp * (i-1)
];
const cellBottomLeft = [
rectangleCoordinates[2][0] + cellWidth_temp * (j) - cellWidth1 * (i),
rectangleCoordinates[2][1] - cellHeight1 * (j) + cellHeight_temp * (i)
];
const tempolygon = new ol.geom.Polygon(
[
[
cellBottomLeft,
cellTopLeft,
cellTopRight,
cellBottomRight,
cellBottomLeft
]
]
);
// Check if the point is inside the rotated rectangle
var isInside = tempolygon.intersectsCoordinate(clickedCoordinates);
// console.log('isInside', isInside);
if (isInside) {
const cellIndex = (i - 1) * parseInt(numRows1) + parseInt(j);
const cellRectangle = new ol.Feature({
geometry: new ol.geom.Polygon([
[
cellBottomLeft,
cellTopLeft,
cellTopRight,
cellBottomRight,
cellBottomLeft
]
]),
text: cellIndex.toString(),
});
gridSource.addFeature(cellRectangle);
break;
}
}
}
}
});
console.log('option', option);
const rectangleCoordinates = drawFeature.getGeometry().getCoordinates()[0];
const rectwidth = rectangleCoordinates[1][0] - rectangleCoordinates[0][0];
const rectheight = rectangleCoordinates[3][1] - rectangleCoordinates[0][1];
const cellWidth1 = value
const cellHeight1 = value
const numCols1 = (rectwidth / value);
const numRows1 = (rectheight / value);
const cellHeight_temp = (rectangleCoordinates[3][0] - rectangleCoordinates[0][0]) / numRows1;
for (let i = 1; i <= parseInt(numCols1); i++) {
if (option === 'BLAlign') {
const line = new ol.geom.LineString([
[rectangleCoordinates[0][0] + cellWidth1 * i, rectangleCoordinates[0][1] - cellHeight_temp * i],
[rectangleCoordinates[3][0] + cellWidth1 * i, rectangleCoordinates[3][1] - cellHeight_temp * i],
// Add as many points as necessary
]);
const lineFeature = new ol.Feature({
geometry: line,
});
gridSource.addFeature(lineFeature);
}
else if (option === 'BRAlign') {
const line = new ol.geom.LineString([
[rectangleCoordinates[1][0] - cellWidth1 * i, rectangleCoordinates[1][1] + cellHeight_temp * i],
[rectangleCoordinates[2][0] - cellWidth1 * i, rectangleCoordinates[2][1] + cellHeight_temp * i],
// Add as many points as necessary
]);
const lineFeature = new ol.Feature({
geometry: line,
});
gridSource.addFeature(lineFeature);
}
else if (option === 'TLAlign') {
const line = new ol.geom.LineString([
[rectangleCoordinates[0][0] + cellWidth1 * i, rectangleCoordinates[0][1] - cellHeight_temp * i],
[rectangleCoordinates[3][0] + cellWidth1 * i, rectangleCoordinates[3][1] - cellHeight_temp * i],
// Add as many points as necessary
]);
const lineFeature = new ol.Feature({
geometry: line,
});
gridSource.addFeature(lineFeature);
} else if (option === 'TRAlign') {
const line = new ol.geom.LineString([
[rectangleCoordinates[1][0] - cellWidth1 * i, rectangleCoordinates[1][1] + cellHeight_temp * i],
[rectangleCoordinates[2][0] - cellWidth1 * i, rectangleCoordinates[2][1] + cellHeight_temp * i],
// Add as many points as necessary
]);
const lineFeature = new ol.Feature({
geometry: line,
});
gridSource.addFeature(lineFeature);
}
}
const cellWidth_temp = (rectangleCoordinates[1][1] - rectangleCoordinates[0][1]) / numCols1;
for (let i = 1; i <= parseInt(numRows1); i++) {
if (option === 'BLAlign' || option === 'BRAlign') {
const line = new ol.geom.LineString([
[rectangleCoordinates[1][0] - cellWidth_temp * i, rectangleCoordinates[1][1] + cellHeight1 * i],
[rectangleCoordinates[0][0] - cellWidth_temp * i, rectangleCoordinates[0][1] + cellHeight1 * i],
// Add as many points as necessary
]);
const lineFeature = new ol.Feature({
geometry: line,
});
gridSource.addFeature(lineFeature);
}
else if (option === 'TLAlign' || option === 'TRAlign') {
const line = new ol.geom.LineString([
[rectangleCoordinates[3][0] + cellWidth_temp * i, rectangleCoordinates[3][1] - cellHeight1 * i],
[rectangleCoordinates[2][0] + cellWidth_temp * i, rectangleCoordinates[2][1] - cellHeight1 * i],
// Add as many points as necessary
]);
const lineFeature = new ol.Feature({
geometry: line,
});
gridSource.addFeature(lineFeature);
}
}
}
};
function onInputChange(e) {
value = e.value;
console.log("Input value:", value);
}
function handleSelectChange(e) {
option = e.value;
console.log(e.value);
}
</script>
</body>
</html>