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ol/geom/flat/length export

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This commit is contained in:
raiyni
2018-02-12 23:27:38 -06:00
parent fb548b1b45
commit 05a648d4f3
5 changed files with 24 additions and 26 deletions
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src/ol/geom/flat/length.js
+5 -7
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@@ -1,7 +1,6 @@
/**
* @module ol/geom/flat/length
*/
const _ol_geom_flat_length_ = {};
/**
@@ -11,7 +10,7 @@ const _ol_geom_flat_length_ = {};
* @param {number} stride Stride.
* @return {number} Length.
*/
_ol_geom_flat_length_.lineString = function(flatCoordinates, offset, end, stride) {
export function lineStringLength(flatCoordinates, offset, end, stride) {
let x1 = flatCoordinates[offset];
let y1 = flatCoordinates[offset + 1];
let length = 0;
@@ -23,7 +22,7 @@ _ol_geom_flat_length_.lineString = function(flatCoordinates, offset, end, stride
y1 = y2;
}
return length;
};
}
/**
@@ -33,11 +32,10 @@ _ol_geom_flat_length_.lineString = function(flatCoordinates, offset, end, stride
* @param {number} stride Stride.
* @return {number} Perimeter.
*/
_ol_geom_flat_length_.linearRing = function(flatCoordinates, offset, end, stride) {
let perimeter = _ol_geom_flat_length_.lineString(flatCoordinates, offset, end, stride);
export function linearRingLength(flatCoordinates, offset, end, stride) {
let perimeter = lineStringLength(flatCoordinates, offset, end, stride);
const dx = flatCoordinates[end - stride] - flatCoordinates[offset];
const dy = flatCoordinates[end - stride + 1] - flatCoordinates[offset + 1];
perimeter += Math.sqrt(dx * dx + dy * dy);
return perimeter;
};
export default _ol_geom_flat_length_;
}