planning

node_modules/ol/geom/flat/area.js

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+/**
+ * @module ol/geom/flat/area
+ */
+/**
+ * @param {Array<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {number} end End.
+ * @param {number} stride Stride.
+ * @return {number} Area.
+ */
+export function linearRing(flatCoordinates, offset, end, stride) {
+    var twiceArea = 0;
+    var x1 = flatCoordinates[end - stride];
+    var y1 = flatCoordinates[end - stride + 1];
+    for (; offset < end; offset += stride) {
+        var x2 = flatCoordinates[offset];
+        var y2 = flatCoordinates[offset + 1];
+        twiceArea += y1 * x2 - x1 * y2;
+        x1 = x2;
+        y1 = y2;
+    }
+    return twiceArea / 2;
+}
+/**
+ * @param {Array<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array<number>} ends Ends.
+ * @param {number} stride Stride.
+ * @return {number} Area.
+ */
+export function linearRings(flatCoordinates, offset, ends, stride) {
+    var area = 0;
+    for (var i = 0, ii = ends.length; i < ii; ++i) {
+        var end = ends[i];
+        area += linearRing(flatCoordinates, offset, end, stride);
+        offset = end;
+    }
+    return area;
+}
+/**
+ * @param {Array<number>} flatCoordinates Flat coordinates.
+ * @param {number} offset Offset.
+ * @param {Array<Array<number>>} endss Endss.
+ * @param {number} stride Stride.
+ * @return {number} Area.
+ */
+export function linearRingss(flatCoordinates, offset, endss, stride) {
+    var area = 0;
+    for (var i = 0, ii = endss.length; i < ii; ++i) {
+        var ends = endss[i];
+        area += linearRings(flatCoordinates, offset, ends, stride);
+        offset = ends[ends.length - 1];
+    }
+    return area;
+}
+//# sourceMappingURL=area.js.map