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- // index.ts
- import { booleanIntersects as intersect } from "@turf/boolean-intersects";
- import {
- convertLength,
- featureCollection,
- polygon
- } from "@turf/helpers";
- function rectangleGrid(bbox, cellWidth, cellHeight, options = {}) {
- const results = [];
- const west = bbox[0];
- const south = bbox[1];
- const east = bbox[2];
- const north = bbox[3];
- const bboxWidth = east - west;
- const cellWidthDeg = convertLength(cellWidth, options.units, "degrees");
- const bboxHeight = north - south;
- const cellHeightDeg = convertLength(cellHeight, options.units, "degrees");
- const columns = Math.floor(Math.abs(bboxWidth) / cellWidthDeg);
- const rows = Math.floor(Math.abs(bboxHeight) / cellHeightDeg);
- const deltaX = (bboxWidth - columns * cellWidthDeg) / 2;
- const deltaY = (bboxHeight - rows * cellHeightDeg) / 2;
- let currentX = west + deltaX;
- for (let column = 0; column < columns; column++) {
- let currentY = south + deltaY;
- for (let row = 0; row < rows; row++) {
- const cellPoly = polygon(
- [
- [
- [currentX, currentY],
- [currentX, currentY + cellHeightDeg],
- [currentX + cellWidthDeg, currentY + cellHeightDeg],
- [currentX + cellWidthDeg, currentY],
- [currentX, currentY]
- ]
- ],
- options.properties
- );
- if (options.mask) {
- if (intersect(options.mask, cellPoly)) {
- results.push(cellPoly);
- }
- } else {
- results.push(cellPoly);
- }
- currentY += cellHeightDeg;
- }
- currentX += cellWidthDeg;
- }
- return featureCollection(results);
- }
- var turf_rectangle_grid_default = rectangleGrid;
- export {
- turf_rectangle_grid_default as default,
- rectangleGrid
- };
- //# sourceMappingURL=index.js.map
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