@nebula.gl/layers
Version:
A suite of 3D-enabled data editing layers, suitable for deck.gl
156 lines (131 loc) • 14.9 kB
JavaScript
;
Object.defineProperty(exports, "__esModule", {
value: true
});
exports["default"] = createPathMarkers;
var _math = require("math.gl");
function _createForOfIteratorHelper(o) { if (typeof Symbol === "undefined" || o[Symbol.iterator] == null) { if (Array.isArray(o) || (o = _unsupportedIterableToArray(o))) { var i = 0; var F = function F() {}; return { s: F, n: function n() { if (i >= o.length) return { done: true }; return { done: false, value: o[i++] }; }, e: function e(_e) { throw _e; }, f: F }; } throw new TypeError("Invalid attempt to iterate non-iterable instance.\nIn order to be iterable, non-array objects must have a [Symbol.iterator]() method."); } var it, normalCompletion = true, didErr = false, err; return { s: function s() { it = o[Symbol.iterator](); }, n: function n() { var step = it.next(); normalCompletion = step.done; return step; }, e: function e(_e2) { didErr = true; err = _e2; }, f: function f() { try { if (!normalCompletion && it["return"] != null) it["return"](); } finally { if (didErr) throw err; } } }; }
function _unsupportedIterableToArray(o, minLen) { if (!o) return; if (typeof o === "string") return _arrayLikeToArray(o, minLen); var n = Object.prototype.toString.call(o).slice(8, -1); if (n === "Object" && o.constructor) n = o.constructor.name; if (n === "Map" || n === "Set") return Array.from(n); if (n === "Arguments" || /^(?:Ui|I)nt(?:8|16|32)(?:Clamped)?Array$/.test(n)) return _arrayLikeToArray(o, minLen); }
function _arrayLikeToArray(arr, len) { if (len == null || len > arr.length) len = arr.length; for (var i = 0, arr2 = new Array(len); i < len; i++) { arr2[i] = arr[i]; } return arr2; }
function getLineLength(vPoints) {
// calculate total length
var lineLength = 0;
for (var i = 0; i < vPoints.length - 1; i++) {
lineLength += vPoints[i].distance(vPoints[i + 1]);
}
return lineLength;
}
var DEFAULT_COLOR = [0, 0, 0, 255];
var DEFAULT_DIRECTION = {
forward: true,
backward: false
};
function createPathMarkers(_ref) {
var data = _ref.data,
_ref$getPath = _ref.getPath,
getPath = _ref$getPath === void 0 ? function (x) {
return x.path;
} : _ref$getPath,
_ref$getDirection = _ref.getDirection,
getDirection = _ref$getDirection === void 0 ? function (x) {
return x.direction;
} : _ref$getDirection,
_ref$getColor = _ref.getColor,
getColor = _ref$getColor === void 0 ? function (x) {
return DEFAULT_COLOR;
} : _ref$getColor,
_ref$getMarkerPercent = _ref.getMarkerPercentages,
getMarkerPercentages = _ref$getMarkerPercent === void 0 ? function (x) {
return [0.5];
} : _ref$getMarkerPercent,
projectFlat = _ref.projectFlat;
var markers = [];
var _iterator = _createForOfIteratorHelper(data),
_step;
try {
for (_iterator.s(); !(_step = _iterator.n()).done;) {
var object = _step.value;
var path = getPath(object);
var direction = getDirection(object) || DEFAULT_DIRECTION;
var color = getColor(object);
var vPoints = path.map(function (p) {
return new _math.Vector2(p);
});
var vPointsReverse = vPoints.slice(0).reverse(); // calculate total length
var lineLength = getLineLength(vPoints); // Ask for where to put markers
// @ts-ignore
var percentages = getMarkerPercentages(object, {
lineLength: lineLength
}); // Create the markers
var _iterator2 = _createForOfIteratorHelper(percentages),
_step2;
try {
for (_iterator2.s(); !(_step2 = _iterator2.n()).done;) {
var percentage = _step2.value;
if (direction.forward) {
var marker = createMarkerAlongPath({
path: vPoints,
percentage: percentage,
lineLength: lineLength,
color: color,
object: object,
projectFlat: projectFlat
});
markers.push(marker);
}
if (direction.backward) {
var _marker = createMarkerAlongPath({
path: vPointsReverse,
percentage: percentage,
lineLength: lineLength,
color: color,
object: object,
projectFlat: projectFlat
});
markers.push(_marker);
}
}
} catch (err) {
_iterator2.e(err);
} finally {
_iterator2.f();
}
}
} catch (err) {
_iterator.e(err);
} finally {
_iterator.f();
}
return markers;
}
function createMarkerAlongPath(_ref2) {
var path = _ref2.path,
percentage = _ref2.percentage,
lineLength = _ref2.lineLength,
color = _ref2.color,
object = _ref2.object,
projectFlat = _ref2.projectFlat;
var distanceAlong = lineLength * percentage;
var currentDistance = 0;
var previousDistance = 0;
var i = 0;
for (i = 0; i < path.length - 1; i++) {
currentDistance += path[i].distance(path[i + 1]);
if (currentDistance > distanceAlong) {
break;
}
previousDistance = currentDistance;
}
var vDirection = path[i + 1].clone().subtract(path[i]).normalize();
var along = distanceAlong - previousDistance;
var vCenter = vDirection.clone().multiply(new _math.Vector2(along, along)).add(path[i]);
var vDirection2 = new _math.Vector2(projectFlat(path[i + 1])).subtract(projectFlat(path[i]));
var angle = vDirection2.verticalAngle() * 180 / Math.PI;
return {
position: [vCenter.x, vCenter.y, 0],
angle: angle,
color: color,
object: object
};
}
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i < vPoints.length - 1; i++) {\n    lineLength += vPoints[i].distance(vPoints[i + 1]);\n  }\n  return lineLength;\n}\n\nconst DEFAULT_COLOR = [0, 0, 0, 255];\nconst DEFAULT_DIRECTION = { forward: true, backward: false };\n\nexport default function createPathMarkers({\n  data,\n  getPath = (x) => x.path,\n  getDirection = (x) => x.direction,\n  getColor = (x) => DEFAULT_COLOR,\n  getMarkerPercentages = (x) => [0.5],\n  projectFlat,\n}) {\n  const markers = [];\n\n  for (const object of data) {\n    const path = getPath(object);\n    const direction = getDirection(object) || DEFAULT_DIRECTION;\n    const color = getColor(object);\n\n    const vPoints = path.map((p) => new Vector2(p));\n    const vPointsReverse = vPoints.slice(0).reverse();\n\n    // calculate total length\n    const lineLength = getLineLength(vPoints);\n\n    // Ask for where to put markers\n    // @ts-ignore\n    const percentages = getMarkerPercentages(object, { lineLength });\n\n    // Create the markers\n    for (const percentage of percentages) {\n      if (direction.forward) {\n        const marker = createMarkerAlongPath({\n          path: vPoints,\n          percentage,\n          lineLength,\n          color,\n          object,\n          projectFlat,\n        });\n        markers.push(marker);\n      }\n\n      if (direction.backward) {\n        const marker = createMarkerAlongPath({\n          path: vPointsReverse,\n          percentage,\n          lineLength,\n          color,\n          object,\n          projectFlat,\n        });\n        markers.push(marker);\n      }\n    }\n  }\n\n  return markers;\n}\n\nfunction createMarkerAlongPath({ path, percentage, lineLength, color, object, projectFlat }) {\n  const distanceAlong = lineLength * percentage;\n  let currentDistance = 0;\n  let previousDistance = 0;\n  let i = 0;\n  for (i = 0; i < path.length - 1; i++) {\n    currentDistance += path[i].distance(path[i + 1]);\n    if (currentDistance > distanceAlong) {\n      break;\n    }\n    previousDistance = currentDistance;\n  }\n\n  const vDirection = path[i + 1].clone().subtract(path[i]).normalize();\n  const along = distanceAlong - previousDistance;\n  const vCenter = vDirection.clone().multiply(new Vector2(along, along)).add(path[i]);\n\n  const vDirection2 = new Vector2(projectFlat(path[i + 1])).subtract(projectFlat(path[i]));\n\n  const angle = (vDirection2.verticalAngle() * 180) / Math.PI;\n\n  return { position: [vCenter.x, vCenter.y, 0], angle, color, object };\n}\n"]}