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L.Symbol.arrowHead: Enable option angleCorrection (similar to #45) #88

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L.Symbol.arrowHead: Enable option angleCorrection (similar to #45) #88

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62bf0c1
L.Symbol.arrowHead: Enable option angleCorrection (similar to #45)
plepe Sep 23, 2018
f30d263
Add example with two arrowheads perpendicular to the way
plepe Sep 24, 2018
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3 changes: 2 additions & 1 deletion dist/leaflet.polylineDecorator.js
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Original file line number Diff line number Diff line change
Expand Up @@ -226,6 +226,7 @@ L$1.Symbol.ArrowHead = L$1.Class.extend({
polygon: true,
pixelSize: 10,
headAngle: 60,
angleCorrection: 0,
pathOptions: {
stroke: false,
weight: 2
Expand All @@ -244,7 +245,7 @@ L$1.Symbol.ArrowHead = L$1.Class.extend({
_buildArrowPath: function _buildArrowPath(dirPoint, map) {
var d2r = Math.PI / 180;
var tipPoint = map.project(dirPoint.latLng);
var direction = -(dirPoint.heading - 90) * d2r;
var direction = -(dirPoint.heading - 90 + this.options.angleCorrection) * d2r;
var radianArrowAngle = this.options.headAngle / 2 * d2r;

var headAngle1 = direction + radianArrowAngle;
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10 changes: 10 additions & 0 deletions example/example.js
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Expand Up @@ -76,4 +76,14 @@ function init() {
{offset: 25, repeat: 50, symbol: L.Symbol.arrowHead({pixelSize: 15, pathOptions: {fillOpacity: 1, weight: 0}})}
]
}).addTo(map);

// --- Example with an rotated arrow heads ---
var arrowRotatedCoords = [[ 50.955, -8.240 ], [ 41.083, -17.869 ]];
var arrowRotatedLine = L.polyline(arrowRotatedCoords).addTo(map);
L.polylineDecorator(arrowRotatedLine, {
patterns: [
{offset: 25, repeat: 50, symbol: L.Symbol.arrowHead({angleCorrection: 90, pixelSize: 15, pathOptions: {color: 'red', fillOpacity: 1, weight: 0}})},
{offset: 25, repeat: 50, symbol: L.Symbol.arrowHead({angleCorrection: 270, pixelSize: 15, pathOptions: {color: 'blue', fillOpacity: 1, weight: 0}})}
]
}).addTo(map);
}
3 changes: 2 additions & 1 deletion src/L.Symbol.js
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Original file line number Diff line number Diff line change
Expand Up @@ -54,6 +54,7 @@ L.Symbol.ArrowHead = L.Class.extend({
polygon: true,
pixelSize: 10,
headAngle: 60,
angleCorrection: 0,
pathOptions: {
stroke: false,
weight: 2
Expand All @@ -74,7 +75,7 @@ L.Symbol.ArrowHead = L.Class.extend({
_buildArrowPath: function (dirPoint, map) {
const d2r = Math.PI / 180;
const tipPoint = map.project(dirPoint.latLng);
const direction = (-(dirPoint.heading - 90)) * d2r;
const direction = (-(dirPoint.heading - 90 + this.options.angleCorrection)) * d2r;
const radianArrowAngle = this.options.headAngle / 2 * d2r;

const headAngle1 = direction + radianArrowAngle;
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