Top 10 Examples of "martinez-polygon-clipping in functional component" in JavaScript
Dive into secure and efficient coding practices with our curated list of the top 10 examples showcasing 'martinez-polygon-clipping' in functional components in JavaScript. Our advanced machine learning engine meticulously scans each line of code, cross-referencing millions of open source libraries to ensure your implementation is not just functional, but also robust and secure. Elevate your React applications to new heights by mastering the art of handling side effects, API calls, and asynchronous operations with confidence and precision.
const simple_intersect = function (A_Vs2d, B_Vs2d) {
// find 2d intersection of two polygons each specified as list of 2d vertices.
try {
// martinez lib expects geojson multi-path polygon which uses repeated final vertices.
const A_Vs2d_ = A_Vs2d.concat([A_Vs2d[0]]);
const B_Vs2d_ = B_Vs2d.concat([B_Vs2d[0]]);
const result = martinez.intersection([A_Vs2d_], [B_Vs2d_]);
// assume simple intersection structure
// take 1st polygon, 1st path, drop last repeated vertex
if (result.length > 0 && result[0].length > 0) {
return result[0][0].slice(0, result[0][0].length);
} else {
return [];
}
} catch (e) { // catch rare errors
console.log(e);
return [];
}
}Offset.prototype.offsetContour = function(curve, edges) {
var union, i, len;
if (isArray(curve[0]) && typeof curve[0][0] === 'number') {
// we have 1 less edge than vertices
for (i = 0, len = curve.length - 1; i < len; i++) {
var segment = this.ensureLastPoint(
this._offsetSegment(curve[i], curve[i + 1], edges[i], this._distance)
);
union = (i === 0) ?
[this.ensureLastPoint(segment)] :
martinez.union(union, this.ensureLastPoint(segment));
}
} else {
for (i = 0, len = edges.length; i < len; i++) {
union = (i === 0) ?
this.offsetContour(curve[i], edges[i]) :
martinez.union(union, this.offsetContour(curve[i], edges[i]));
}
}
return union;
};var union, i, len;
if (isArray(curve[0]) && typeof curve[0][0] === 'number') {
// we have 1 less edge than vertices
for (i = 0, len = curve.length - 1; i < len; i++) {
var segment = this.ensureLastPoint(
this._offsetSegment(curve[i], curve[i + 1], edges[i], this._distance)
);
union = (i === 0) ?
[this.ensureLastPoint(segment)] :
martinez.union(union, this.ensureLastPoint(segment));
}
} else {
for (i = 0, len = edges.length; i < len; i++) {
union = (i === 0) ?
this.offsetContour(curve[i], edges[i]) :
martinez.union(union, this.offsetContour(curve[i], edges[i]));
}
}
return union;
};Offset.prototype.offsetContour = function(curve, edges) {
var union, i, len;
if (isArray(curve[0]) && typeof curve[0][0] === 'number') {
// we have 1 less edge than vertices
for (i = 0, len = curve.length - 1; i < len; i++) {
var segment = this.ensureLastPoint(
this._offsetSegment(curve[i], curve[i + 1], edges[i], this._distance)
);
union = (i === 0) ?
[this.ensureLastPoint(segment)] :
martinez.union(union, this.ensureLastPoint(segment));
}
} else {
for (i = 0, len = edges.length; i < len; i++) {
union = (i === 0) ?
this.offsetContour(curve[i], edges[i]) :
martinez.union(union, this.offsetContour(curve[i], edges[i]));
}
}
return union;
};var union, i, len;
if (isArray(curve[0]) && typeof curve[0][0] === 'number') {
// we have 1 less edge than vertices
for (i = 0, len = curve.length - 1; i < len; i++) {
var segment = this.ensureLastPoint(
this._offsetSegment(curve[i], curve[i + 1], edges[i], this._distance)
);
union = (i === 0) ?
[this.ensureLastPoint(segment)] :
martinez.union(union, this.ensureLastPoint(segment));
}
} else {
for (i = 0, len = edges.length; i < len; i++) {
union = (i === 0) ?
this.offsetContour(curve[i], edges[i]) :
martinez.union(union, this.offsetContour(curve[i], edges[i]));
}
}
return union;
};Offset.prototype.margin = function(dist) {
this.distance(dist);
if (typeof this.vertices[0] === 'number') { // point
return this.offsetPoint(this._distance);
}
if (dist === 0) return this.vertices;
var union = this.offsetLines(this._distance);
//return union;
union = martinez.union(this.vertices, union);
return orientRings(union);
};Offset.prototype.margin = function(dist) {
this.distance(dist);
if (typeof this.vertices[0] === 'number') { // point
return this.offsetPoint(this._distance);
}
if (dist === 0) return this.vertices;
var union = this.offsetLines(this._distance);
//return union;
union = martinez.union(this.vertices, union);
return orientRings(union);
};}
// Generate some unique IDs and add some metadata
var featurehash = utilHashcode(stringify(feature));
var propertyhash = utilHashcode(stringify(feature.properties || {}));
feature.__layerID__ = layerID.replace(/[^_a-zA-Z0-9\-]/g, '_');
feature.__featurehash__ = featurehash;
feature.__propertyhash__ = propertyhash;
features.push(feature);
// Clipped Polygons at same zoom with identical properties can get merged
if (isClipped && geometry.type === 'MultiPolygon') {
var merged = mergeCache[propertyhash];
if (merged && merged.length) {
var other = merged[0];
var coords = martinez.union(
feature.geometry.coordinates, other.geometry.coordinates
);
if (!coords || !coords.length) {
continue; // something failed in martinez union
}
merged.push(feature);
for (var j = 0; j < merged.length; j++) { // all these features get...
merged[j].geometry.coordinates = coords; // same coords
merged[j].__featurehash__ = featurehash; // same hash, so deduplication works
}
} else {
mergeCache[propertyhash] = [feature];
}
}function difference(polygon1, polygon2) {
var geom1 = getGeom(polygon1);
var geom2 = getGeom(polygon2);
var properties = polygon1.properties || {};
// Issue #721 - JSTS/Martinez can't handle empty polygons
geom1 = removeEmptyPolygon(geom1);
geom2 = removeEmptyPolygon(geom2);
if (!geom1) return null;
if (!geom2) return feature(geom1, properties);
var differenced = martinez.diff(geom1.coordinates, geom2.coordinates);
if (differenced.length === 0) return null;
if (differenced.length === 1) return polygon(differenced[0], properties);
else return multiPolygon(differenced, properties);
}function intersect(poly1, poly2) {
var geom1 = getGeom(poly1);
var geom2 = getGeom(poly2);
var properties = poly1.properties || {};
// Return null if geometry is too narrow in coordinate precision
// fixes topology errors with JSTS
// https://github.com/Turfjs/turf/issues/463
// https://github.com/Turfjs/turf/pull/1004
// if (cleanCoords(truncate(geom2, {precision: 4})).coordinates[0].length < 4) return null;
// if (cleanCoords(truncate(geom1, {precision: 4})).coordinates[0].length < 4) return null;
var intersection = martinez.intersection(geom1.coordinates, geom2.coordinates);
if (intersection === null || intersection.length === 0) return null;
if (intersection.length === 1) return polygon(intersection[0], properties);
else return multiPolygon(intersection, properties);
}