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tupali/librerias/gantt/code/modules/pathfinder.src.js

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2020-05-23 20:45:54 +00:00
/**
* @license Highcharts Gantt JS v8.1.0 (2020-05-05)
*
* Pathfinder
*
* (c) 2016-2019 Øystein Moseng
*
* License: www.highcharts.com/license
*/
'use strict';
(function (factory) {
if (typeof module === 'object' && module.exports) {
factory['default'] = factory;
module.exports = factory;
} else if (typeof define === 'function' && define.amd) {
define('highcharts/modules/pathfinder', ['highcharts'], function (Highcharts) {
factory(Highcharts);
factory.Highcharts = Highcharts;
return factory;
});
} else {
factory(typeof Highcharts !== 'undefined' ? Highcharts : undefined);
}
}(function (Highcharts) {
var _modules = Highcharts ? Highcharts._modules : {};
function _registerModule(obj, path, args, fn) {
if (!obj.hasOwnProperty(path)) {
obj[path] = fn.apply(null, args);
}
}
_registerModule(_modules, 'parts-gantt/PathfinderAlgorithms.js', [_modules['parts/Utilities.js']], function (U) {
/* *
*
* (c) 2016 Highsoft AS
* Author: Øystein Moseng
*
* License: www.highcharts.com/license
*
* !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
*
* */
var extend = U.extend, pick = U.pick;
var min = Math.min, max = Math.max, abs = Math.abs;
/**
* Get index of last obstacle before xMin. Employs a type of binary search, and
* thus requires that obstacles are sorted by xMin value.
*
* @private
* @function findLastObstacleBefore
*
* @param {Array<object>} obstacles
* Array of obstacles to search in.
*
* @param {number} xMin
* The xMin threshold.
*
* @param {number} [startIx]
* Starting index to search from. Must be within array range.
*
* @return {number}
* The index of the last obstacle element before xMin.
*/
function findLastObstacleBefore(obstacles, xMin, startIx) {
var left = startIx || 0, // left limit
right = obstacles.length - 1, // right limit
min = xMin - 0.0000001, // Make sure we include all obstacles at xMin
cursor, cmp;
while (left <= right) {
cursor = (right + left) >> 1;
cmp = min - obstacles[cursor].xMin;
if (cmp > 0) {
left = cursor + 1;
}
else if (cmp < 0) {
right = cursor - 1;
}
else {
return cursor;
}
}
return left > 0 ? left - 1 : 0;
}
/**
* Test if a point lays within an obstacle.
*
* @private
* @function pointWithinObstacle
*
* @param {object} obstacle
* Obstacle to test.
*
* @param {Highcharts.Point} point
* Point with x/y props.
*
* @return {boolean}
* Whether point is within the obstacle or not.
*/
function pointWithinObstacle(obstacle, point) {
return (point.x <= obstacle.xMax &&
point.x >= obstacle.xMin &&
point.y <= obstacle.yMax &&
point.y >= obstacle.yMin);
}
/**
* Find the index of an obstacle that wraps around a point.
* Returns -1 if not found.
*
* @private
* @function findObstacleFromPoint
*
* @param {Array<object>} obstacles
* Obstacles to test.
*
* @param {Highcharts.Point} point
* Point with x/y props.
*
* @return {number}
* Ix of the obstacle in the array, or -1 if not found.
*/
function findObstacleFromPoint(obstacles, point) {
var i = findLastObstacleBefore(obstacles, point.x + 1) + 1;
while (i--) {
if (obstacles[i].xMax >= point.x &&
// optimization using lazy evaluation
pointWithinObstacle(obstacles[i], point)) {
return i;
}
}
return -1;
}
/**
* Get SVG path array from array of line segments.
*
* @private
* @function pathFromSegments
*
* @param {Array<object>} segments
* The segments to build the path from.
*
* @return {Highcharts.SVGPathArray}
* SVG path array as accepted by the SVG Renderer.
*/
function pathFromSegments(segments) {
var path = [];
if (segments.length) {
path.push(['M', segments[0].start.x, segments[0].start.y]);
for (var i = 0; i < segments.length; ++i) {
path.push(['L', segments[i].end.x, segments[i].end.y]);
}
}
return path;
}
/**
* Limits obstacle max/mins in all directions to bounds. Modifies input
* obstacle.
*
* @private
* @function limitObstacleToBounds
*
* @param {object} obstacle
* Obstacle to limit.
*
* @param {object} bounds
* Bounds to use as limit.
*
* @return {void}
*/
function limitObstacleToBounds(obstacle, bounds) {
obstacle.yMin = max(obstacle.yMin, bounds.yMin);
obstacle.yMax = min(obstacle.yMax, bounds.yMax);
obstacle.xMin = max(obstacle.xMin, bounds.xMin);
obstacle.xMax = min(obstacle.xMax, bounds.xMax);
}
// Define the available pathfinding algorithms.
// Algorithms take up to 3 arguments: starting point, ending point, and an
// options object.
var algorithms = {
/**
* Get an SVG path from a starting coordinate to an ending coordinate.
* Draws a straight line.
*
* @function Highcharts.Pathfinder.algorithms.straight
*
* @param {Highcharts.PositionObject} start
* Starting coordinate, object with x/y props.
*
* @param {Highcharts.PositionObject} end
* Ending coordinate, object with x/y props.
*
* @return {object}
* An object with the SVG path in Array form as accepted by the SVG
* renderer, as well as an array of new obstacles making up this
* path.
*/
straight: function (start, end) {
return {
path: [
['M', start.x, start.y],
['L', end.x, end.y]
],
obstacles: [{ start: start, end: end }]
};
},
/**
* Find a path from a starting coordinate to an ending coordinate, using
* right angles only, and taking only starting/ending obstacle into
* consideration.
*
* @function Highcharts.Pathfinder.algorithms.simpleConnect
*
* @param {Highcharts.PositionObject} start
* Starting coordinate, object with x/y props.
*
* @param {Highcharts.PositionObject} end
* Ending coordinate, object with x/y props.
*
* @param {object} options
* Options for the algorithm:
* - chartObstacles: Array of chart obstacles to avoid
* - startDirectionX: Optional. True if starting in the X direction.
* If not provided, the algorithm starts in the direction that is
* the furthest between start/end.
*
* @return {object}
* An object with the SVG path in Array form as accepted by the SVG
* renderer, as well as an array of new obstacles making up this
* path.
*/
simpleConnect: extend(function (start, end, options) {
var segments = [], endSegment, dir = pick(options.startDirectionX, abs(end.x - start.x) > abs(end.y - start.y)) ? 'x' : 'y', chartObstacles = options.chartObstacles, startObstacleIx = findObstacleFromPoint(chartObstacles, start), endObstacleIx = findObstacleFromPoint(chartObstacles, end), startObstacle, endObstacle, prevWaypoint, waypoint, waypoint2, useMax, endPoint;
// eslint-disable-next-line valid-jsdoc
/**
* Return a clone of a point with a property set from a target object,
* optionally with an offset
* @private
*/
function copyFromPoint(from, fromKey, to, toKey, offset) {
var point = {
x: from.x,
y: from.y
};
point[fromKey] = to[toKey || fromKey] + (offset || 0);
return point;
}
// eslint-disable-next-line valid-jsdoc
/**
* Return waypoint outside obstacle.
* @private
*/
function getMeOut(obstacle, point, direction) {
var useMax = abs(point[direction] - obstacle[direction + 'Min']) >
abs(point[direction] - obstacle[direction + 'Max']);
return copyFromPoint(point, direction, obstacle, direction + (useMax ? 'Max' : 'Min'), useMax ? 1 : -1);
}
// Pull out end point
if (endObstacleIx > -1) {
endObstacle = chartObstacles[endObstacleIx];
waypoint = getMeOut(endObstacle, end, dir);
endSegment = {
start: waypoint,
end: end
};
endPoint = waypoint;
}
else {
endPoint = end;
}
// If an obstacle envelops the start point, add a segment to get out,
// and around it.
if (startObstacleIx > -1) {
startObstacle = chartObstacles[startObstacleIx];
waypoint = getMeOut(startObstacle, start, dir);
segments.push({
start: start,
end: waypoint
});
// If we are going back again, switch direction to get around start
// obstacle.
if (
// Going towards max from start:
waypoint[dir] >= start[dir] ===
// Going towards min to end:
waypoint[dir] >= endPoint[dir]) {
dir = dir === 'y' ? 'x' : 'y';
useMax = start[dir] < end[dir];
segments.push({
start: waypoint,
end: copyFromPoint(waypoint, dir, startObstacle, dir + (useMax ? 'Max' : 'Min'), useMax ? 1 : -1)
});
// Switch direction again
dir = dir === 'y' ? 'x' : 'y';
}
}
// We are around the start obstacle. Go towards the end in one
// direction.
prevWaypoint = segments.length ?
segments[segments.length - 1].end :
start;
waypoint = copyFromPoint(prevWaypoint, dir, endPoint);
segments.push({
start: prevWaypoint,
end: waypoint
});
// Final run to end point in the other direction
dir = dir === 'y' ? 'x' : 'y';
waypoint2 = copyFromPoint(waypoint, dir, endPoint);
segments.push({
start: waypoint,
end: waypoint2
});
// Finally add the endSegment
segments.push(endSegment);
return {
path: pathFromSegments(segments),
obstacles: segments
};
}, {
requiresObstacles: true
}),
/**
* Find a path from a starting coordinate to an ending coordinate, taking
* obstacles into consideration. Might not always find the optimal path,
* but is fast, and usually good enough.
*
* @function Highcharts.Pathfinder.algorithms.fastAvoid
*
* @param {Highcharts.PositionObject} start
* Starting coordinate, object with x/y props.
*
* @param {Highcharts.PositionObject} end
* Ending coordinate, object with x/y props.
*
* @param {object} options
* Options for the algorithm.
* - chartObstacles: Array of chart obstacles to avoid
* - lineObstacles: Array of line obstacles to jump over
* - obstacleMetrics: Object with metrics of chartObstacles cached
* - hardBounds: Hard boundaries to not cross
* - obstacleOptions: Options for the obstacles, including margin
* - startDirectionX: Optional. True if starting in the X direction.
* If not provided, the algorithm starts in the
* direction that is the furthest between
* start/end.
*
* @return {object}
* An object with the SVG path in Array form as accepted by the SVG
* renderer, as well as an array of new obstacles making up this
* path.
*/
fastAvoid: extend(function (start, end, options) {
/*
Algorithm rules/description
- Find initial direction
- Determine soft/hard max for each direction.
- Move along initial direction until obstacle.
- Change direction.
- If hitting obstacle, first try to change length of previous line
before changing direction again.
Soft min/max x = start/destination x +/- widest obstacle + margin
Soft min/max y = start/destination y +/- tallest obstacle + margin
@todo:
- Make retrospective, try changing prev segment to reduce
corners
- Fix logic for breaking out of end-points - not always picking
the best direction currently
- When going around the end obstacle we should not always go the
shortest route, rather pick the one closer to the end point
*/
var dirIsX = pick(options.startDirectionX, abs(end.x - start.x) > abs(end.y - start.y)), dir = dirIsX ? 'x' : 'y', segments, useMax, extractedEndPoint, endSegments = [], forceObstacleBreak = false, // Used in clearPathTo to keep track of
// when to force break through an obstacle.
// Boundaries to stay within. If beyond soft boundary, prefer to
// change direction ASAP. If at hard max, always change immediately.
metrics = options.obstacleMetrics, softMinX = min(start.x, end.x) - metrics.maxWidth - 10, softMaxX = max(start.x, end.x) + metrics.maxWidth + 10, softMinY = min(start.y, end.y) - metrics.maxHeight - 10, softMaxY = max(start.y, end.y) + metrics.maxHeight + 10,
// Obstacles
chartObstacles = options.chartObstacles, startObstacleIx = findLastObstacleBefore(chartObstacles, softMinX), endObstacleIx = findLastObstacleBefore(chartObstacles, softMaxX);
// eslint-disable-next-line valid-jsdoc
/**
* How far can you go between two points before hitting an obstacle?
* Does not work for diagonal lines (because it doesn't have to).
* @private
*/
function pivotPoint(fromPoint, toPoint, directionIsX) {
var firstPoint, lastPoint, highestPoint, lowestPoint, i, searchDirection = fromPoint.x < toPoint.x ? 1 : -1;
if (fromPoint.x < toPoint.x) {
firstPoint = fromPoint;
lastPoint = toPoint;
}
else {
firstPoint = toPoint;
lastPoint = fromPoint;
}
if (fromPoint.y < toPoint.y) {
lowestPoint = fromPoint;
highestPoint = toPoint;
}
else {
lowestPoint = toPoint;
highestPoint = fromPoint;
}
// Go through obstacle range in reverse if toPoint is before
// fromPoint in the X-dimension.
i = searchDirection < 0 ?
// Searching backwards, start at last obstacle before last point
min(findLastObstacleBefore(chartObstacles, lastPoint.x), chartObstacles.length - 1) :
// Forwards. Since we're not sorted by xMax, we have to look
// at all obstacles.
0;
// Go through obstacles in this X range
while (chartObstacles[i] && (searchDirection > 0 && chartObstacles[i].xMin <= lastPoint.x ||
searchDirection < 0 && chartObstacles[i].xMax >= firstPoint.x)) {
// If this obstacle is between from and to points in a straight
// line, pivot at the intersection.
if (chartObstacles[i].xMin <= lastPoint.x &&
chartObstacles[i].xMax >= firstPoint.x &&
chartObstacles[i].yMin <= highestPoint.y &&
chartObstacles[i].yMax >= lowestPoint.y) {
if (directionIsX) {
return {
y: fromPoint.y,
x: fromPoint.x < toPoint.x ?
chartObstacles[i].xMin - 1 :
chartObstacles[i].xMax + 1,
obstacle: chartObstacles[i]
};
}
// else ...
return {
x: fromPoint.x,
y: fromPoint.y < toPoint.y ?
chartObstacles[i].yMin - 1 :
chartObstacles[i].yMax + 1,
obstacle: chartObstacles[i]
};
}
i += searchDirection;
}
return toPoint;
}
/**
* Decide in which direction to dodge or get out of an obstacle.
* Considers desired direction, which way is shortest, soft and hard
* bounds.
*
* (? Returns a string, either xMin, xMax, yMin or yMax.)
*
* @private
* @function
*
* @param {object} obstacle
* Obstacle to dodge/escape.
*
* @param {object} fromPoint
* Point with x/y props that's dodging/escaping.
*
* @param {object} toPoint
* Goal point.
*
* @param {boolean} dirIsX
* Dodge in X dimension.
*
* @param {object} bounds
* Hard and soft boundaries.
*
* @return {boolean}
* Use max or not.
*/
function getDodgeDirection(obstacle, fromPoint, toPoint, dirIsX, bounds) {
var softBounds = bounds.soft, hardBounds = bounds.hard, dir = dirIsX ? 'x' : 'y', toPointMax = { x: fromPoint.x, y: fromPoint.y }, toPointMin = { x: fromPoint.x, y: fromPoint.y }, minPivot, maxPivot, maxOutOfSoftBounds = obstacle[dir + 'Max'] >=
softBounds[dir + 'Max'], minOutOfSoftBounds = obstacle[dir + 'Min'] <=
softBounds[dir + 'Min'], maxOutOfHardBounds = obstacle[dir + 'Max'] >=
hardBounds[dir + 'Max'], minOutOfHardBounds = obstacle[dir + 'Min'] <=
hardBounds[dir + 'Min'],
// Find out if we should prefer one direction over the other if
// we can choose freely
minDistance = abs(obstacle[dir + 'Min'] - fromPoint[dir]), maxDistance = abs(obstacle[dir + 'Max'] - fromPoint[dir]),
// If it's a small difference, pick the one leading towards dest
// point. Otherwise pick the shortest distance
useMax = abs(minDistance - maxDistance) < 10 ?
fromPoint[dir] < toPoint[dir] :
maxDistance < minDistance;
// Check if we hit any obstacles trying to go around in either
// direction.
toPointMin[dir] = obstacle[dir + 'Min'];
toPointMax[dir] = obstacle[dir + 'Max'];
minPivot = pivotPoint(fromPoint, toPointMin, dirIsX)[dir] !==
toPointMin[dir];
maxPivot = pivotPoint(fromPoint, toPointMax, dirIsX)[dir] !==
toPointMax[dir];
useMax = minPivot ?
(maxPivot ? useMax : true) :
(maxPivot ? false : useMax);
// useMax now contains our preferred choice, bounds not taken into
// account. If both or neither direction is out of bounds we want to
// use this.
// Deal with soft bounds
useMax = minOutOfSoftBounds ?
(maxOutOfSoftBounds ? useMax : true) : // Out on min
(maxOutOfSoftBounds ? false : useMax); // Not out on min
// Deal with hard bounds
useMax = minOutOfHardBounds ?
(maxOutOfHardBounds ? useMax : true) : // Out on min
(maxOutOfHardBounds ? false : useMax); // Not out on min
return useMax;
}
// eslint-disable-next-line valid-jsdoc
/**
* Find a clear path between point.
* @private
*/
function clearPathTo(fromPoint, toPoint, dirIsX) {
// Don't waste time if we've hit goal
if (fromPoint.x === toPoint.x && fromPoint.y === toPoint.y) {
return [];
}
var dir = dirIsX ? 'x' : 'y', pivot, segments, waypoint, waypointUseMax, envelopingObstacle, secondEnvelopingObstacle, envelopWaypoint, obstacleMargin = options.obstacleOptions.margin, bounds = {
soft: {
xMin: softMinX,
xMax: softMaxX,
yMin: softMinY,
yMax: softMaxY
},
hard: options.hardBounds
};
// If fromPoint is inside an obstacle we have a problem. Break out
// by just going to the outside of this obstacle. We prefer to go to
// the nearest edge in the chosen direction.
envelopingObstacle =
findObstacleFromPoint(chartObstacles, fromPoint);
if (envelopingObstacle > -1) {
envelopingObstacle = chartObstacles[envelopingObstacle];
waypointUseMax = getDodgeDirection(envelopingObstacle, fromPoint, toPoint, dirIsX, bounds);
// Cut obstacle to hard bounds to make sure we stay within
limitObstacleToBounds(envelopingObstacle, options.hardBounds);
envelopWaypoint = dirIsX ? {
y: fromPoint.y,
x: envelopingObstacle[waypointUseMax ? 'xMax' : 'xMin'] +
(waypointUseMax ? 1 : -1)
} : {
x: fromPoint.x,
y: envelopingObstacle[waypointUseMax ? 'yMax' : 'yMin'] +
(waypointUseMax ? 1 : -1)
};
// If we crashed into another obstacle doing this, we put the
// waypoint between them instead
secondEnvelopingObstacle = findObstacleFromPoint(chartObstacles, envelopWaypoint);
if (secondEnvelopingObstacle > -1) {
secondEnvelopingObstacle = chartObstacles[secondEnvelopingObstacle];
// Cut obstacle to hard bounds
limitObstacleToBounds(secondEnvelopingObstacle, options.hardBounds);
// Modify waypoint to lay between obstacles
envelopWaypoint[dir] = waypointUseMax ? max(envelopingObstacle[dir + 'Max'] - obstacleMargin + 1, (secondEnvelopingObstacle[dir + 'Min'] +
envelopingObstacle[dir + 'Max']) / 2) :
min((envelopingObstacle[dir + 'Min'] + obstacleMargin - 1), ((secondEnvelopingObstacle[dir + 'Max'] +
envelopingObstacle[dir + 'Min']) / 2));
// We are not going anywhere. If this happens for the first
// time, do nothing. Otherwise, try to go to the extreme of
// the obstacle pair in the current direction.
if (fromPoint.x === envelopWaypoint.x &&
fromPoint.y === envelopWaypoint.y) {
if (forceObstacleBreak) {
envelopWaypoint[dir] = waypointUseMax ?
max(envelopingObstacle[dir + 'Max'], secondEnvelopingObstacle[dir + 'Max']) + 1 :
min(envelopingObstacle[dir + 'Min'], secondEnvelopingObstacle[dir + 'Min']) - 1;
}
// Toggle on if off, and the opposite
forceObstacleBreak = !forceObstacleBreak;
}
else {
// This point is not identical to previous.
// Clear break trigger.
forceObstacleBreak = false;
}
}
segments = [{
start: fromPoint,
end: envelopWaypoint
}];
}
else { // If not enveloping, use standard pivot calculation
pivot = pivotPoint(fromPoint, {
x: dirIsX ? toPoint.x : fromPoint.x,
y: dirIsX ? fromPoint.y : toPoint.y
}, dirIsX);
segments = [{
start: fromPoint,
end: {
x: pivot.x,
y: pivot.y
}
}];
// Pivot before goal, use a waypoint to dodge obstacle
if (pivot[dirIsX ? 'x' : 'y'] !== toPoint[dirIsX ? 'x' : 'y']) {
// Find direction of waypoint
waypointUseMax = getDodgeDirection(pivot.obstacle, pivot, toPoint, !dirIsX, bounds);
// Cut waypoint to hard bounds
limitObstacleToBounds(pivot.obstacle, options.hardBounds);
waypoint = {
x: dirIsX ?
pivot.x :
pivot.obstacle[waypointUseMax ? 'xMax' : 'xMin'] +
(waypointUseMax ? 1 : -1),
y: dirIsX ?
pivot.obstacle[waypointUseMax ? 'yMax' : 'yMin'] +
(waypointUseMax ? 1 : -1) :
pivot.y
};
// We're changing direction here, store that to make sure we
// also change direction when adding the last segment array
// after handling waypoint.
dirIsX = !dirIsX;
segments = segments.concat(clearPathTo({
x: pivot.x,
y: pivot.y
}, waypoint, dirIsX));
}
}
// Get segments for the other direction too
// Recursion is our friend
segments = segments.concat(clearPathTo(segments[segments.length - 1].end, toPoint, !dirIsX));
return segments;
}
// eslint-disable-next-line valid-jsdoc
/**
* Extract point to outside of obstacle in whichever direction is
* closest. Returns new point outside obstacle.
* @private
*/
function extractFromObstacle(obstacle, point, goalPoint) {
var dirIsX = min(obstacle.xMax - point.x, point.x - obstacle.xMin) <
min(obstacle.yMax - point.y, point.y - obstacle.yMin), bounds = {
soft: options.hardBounds,
hard: options.hardBounds
}, useMax = getDodgeDirection(obstacle, point, goalPoint, dirIsX, bounds);
return dirIsX ? {
y: point.y,
x: obstacle[useMax ? 'xMax' : 'xMin'] + (useMax ? 1 : -1)
} : {
x: point.x,
y: obstacle[useMax ? 'yMax' : 'yMin'] + (useMax ? 1 : -1)
};
}
// Cut the obstacle array to soft bounds for optimization in large
// datasets.
chartObstacles =
chartObstacles.slice(startObstacleIx, endObstacleIx + 1);
// If an obstacle envelops the end point, move it out of there and add
// a little segment to where it was.
if ((endObstacleIx = findObstacleFromPoint(chartObstacles, end)) > -1) {
extractedEndPoint = extractFromObstacle(chartObstacles[endObstacleIx], end, start);
endSegments.push({
end: end,
start: extractedEndPoint
});
end = extractedEndPoint;
}
// If it's still inside one or more obstacles, get out of there by
// force-moving towards the start point.
while ((endObstacleIx = findObstacleFromPoint(chartObstacles, end)) > -1) {
useMax = end[dir] - start[dir] < 0;
extractedEndPoint = {
x: end.x,
y: end.y
};
extractedEndPoint[dir] = chartObstacles[endObstacleIx][useMax ? dir + 'Max' : dir + 'Min'] + (useMax ? 1 : -1);
endSegments.push({
end: end,
start: extractedEndPoint
});
end = extractedEndPoint;
}
// Find the path
segments = clearPathTo(start, end, dirIsX);
// Add the end-point segments
segments = segments.concat(endSegments.reverse());
return {
path: pathFromSegments(segments),
obstacles: segments
};
}, {
requiresObstacles: true
})
};
return algorithms;
});
_registerModule(_modules, 'parts-gantt/ArrowSymbols.js', [_modules['parts/Globals.js']], function (H) {
/* *
*
* (c) 2017 Highsoft AS
* Authors: Lars A. V. Cabrera
*
* License: www.highcharts.com/license
*
* !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
*
* */
/**
* Creates an arrow symbol. Like a triangle, except not filled.
* ```
* o
* o
* o
* o
* o
* o
* o
* ```
*
* @private
* @function
*
* @param {number} x
* x position of the arrow
*
* @param {number} y
* y position of the arrow
*
* @param {number} w
* width of the arrow
*
* @param {number} h
* height of the arrow
*
* @return {Highcharts.SVGPathArray}
* Path array
*/
H.SVGRenderer.prototype.symbols.arrow = function (x, y, w, h) {
return [
['M', x, y + h / 2],
['L', x + w, y],
['L', x, y + h / 2],
['L', x + w, y + h]
];
};
/**
* Creates a half-width arrow symbol. Like a triangle, except not filled.
* ```
* o
* o
* o
* o
* o
* ```
*
* @private
* @function
*
* @param {number} x
* x position of the arrow
*
* @param {number} y
* y position of the arrow
*
* @param {number} w
* width of the arrow
*
* @param {number} h
* height of the arrow
*
* @return {Highcharts.SVGPathArray}
* Path array
*/
H.SVGRenderer.prototype.symbols['arrow-half'] = function (x, y, w, h) {
return H.SVGRenderer.prototype.symbols.arrow(x, y, w / 2, h);
};
/**
* Creates a left-oriented triangle.
* ```
* o
* ooooooo
* ooooooooooooo
* ooooooo
* o
* ```
*
* @private
* @function
*
* @param {number} x
* x position of the triangle
*
* @param {number} y
* y position of the triangle
*
* @param {number} w
* width of the triangle
*
* @param {number} h
* height of the triangle
*
* @return {Highcharts.SVGPathArray}
* Path array
*/
H.SVGRenderer.prototype.symbols['triangle-left'] = function (x, y, w, h) {
return [
['M', x + w, y],
['L', x, y + h / 2],
['L', x + w, y + h],
['Z']
];
};
/**
* Alias function for triangle-left.
*
* @private
* @function
*
* @param {number} x
* x position of the arrow
*
* @param {number} y
* y position of the arrow
*
* @param {number} w
* width of the arrow
*
* @param {number} h
* height of the arrow
*
* @return {Highcharts.SVGPathArray}
* Path array
*/
H.SVGRenderer.prototype.symbols['arrow-filled'] =
H.SVGRenderer.prototype.symbols['triangle-left'];
/**
* Creates a half-width, left-oriented triangle.
* ```
* o
* oooo
* ooooooo
* oooo
* o
* ```
*
* @private
* @function
*
* @param {number} x
* x position of the triangle
*
* @param {number} y
* y position of the triangle
*
* @param {number} w
* width of the triangle
*
* @param {number} h
* height of the triangle
*
* @return {Highcharts.SVGPathArray}
* Path array
*/
H.SVGRenderer.prototype.symbols['triangle-left-half'] = function (x, y, w, h) {
return H.SVGRenderer.prototype.symbols['triangle-left'](x, y, w / 2, h);
};
/**
* Alias function for triangle-left-half.
*
* @private
* @function
*
* @param {number} x
* x position of the arrow
*
* @param {number} y
* y position of the arrow
*
* @param {number} w
* width of the arrow
*
* @param {number} h
* height of the arrow
*
* @return {Highcharts.SVGPathArray}
* Path array
*/
H.SVGRenderer.prototype.symbols['arrow-filled-half'] =
H.SVGRenderer.prototype.symbols['triangle-left-half'];
});
_registerModule(_modules, 'parts-gantt/Pathfinder.js', [_modules['parts/Globals.js'], _modules['parts/Point.js'], _modules['parts/Utilities.js'], _modules['parts-gantt/PathfinderAlgorithms.js']], function (H, Point, U, pathfinderAlgorithms) {
/* *
*
* (c) 2016 Highsoft AS
* Authors: Øystein Moseng, Lars A. V. Cabrera
*
* License: www.highcharts.com/license
*
* !!!!!!! SOURCE GETS TRANSPILED BY TYPESCRIPT. EDIT TS FILE ONLY. !!!!!!!
*
* */
/**
* The default pathfinder algorithm to use for a chart. It is possible to define
* your own algorithms by adding them to the
* `Highcharts.Pathfinder.prototype.algorithms`
* object before the chart has been created.
*
* The default algorithms are as follows:
*
* `straight`: Draws a straight line between the connecting
* points. Does not avoid other points when drawing.
*
* `simpleConnect`: Finds a path between the points using right angles
* only. Takes only starting/ending points into
* account, and will not avoid other points.
*
* `fastAvoid`: Finds a path between the points using right angles
* only. Will attempt to avoid other points, but its
* focus is performance over accuracy. Works well with
* less dense datasets.
*
* @typedef {"fastAvoid"|"simpleConnect"|"straight"|string} Highcharts.PathfinderTypeValue
*/
''; // detach doclets above
var addEvent = U.addEvent, defined = U.defined, error = U.error, extend = U.extend, merge = U.merge, objectEach = U.objectEach, pick = U.pick, splat = U.splat;
var deg2rad = H.deg2rad, max = Math.max, min = Math.min;
/*
@todo:
- Document how to write your own algorithms
- Consider adding a Point.pathTo method that wraps creating a connection
and rendering it
*/
// Set default Pathfinder options
extend(H.defaultOptions, {
/**
* The Pathfinder module allows you to define connections between any two
* points, represented as lines - optionally with markers for the start
* and/or end points. Multiple algorithms are available for calculating how
* the connecting lines are drawn.
*
* Connector functionality requires Highcharts Gantt to be loaded. In Gantt
* charts, the connectors are used to draw dependencies between tasks.
*
* @see [dependency](series.gantt.data.dependency)
*
* @sample gantt/pathfinder/demo
* Pathfinder connections
*
* @declare Highcharts.ConnectorsOptions
* @product gantt
* @optionparent connectors
*/
connectors: {
/**
* Enable connectors for this chart. Requires Highcharts Gantt.
*
* @type {boolean}
* @default true
* @since 6.2.0
* @apioption connectors.enabled
*/
/**
* Set the default dash style for this chart's connecting lines.
*
* @type {string}
* @default solid
* @since 6.2.0
* @apioption connectors.dashStyle
*/
/**
* Set the default color for this chart's Pathfinder connecting lines.
* Defaults to the color of the point being connected.
*
* @type {Highcharts.ColorString}
* @since 6.2.0
* @apioption connectors.lineColor
*/
/**
* Set the default pathfinder margin to use, in pixels. Some Pathfinder
* algorithms attempt to avoid obstacles, such as other points in the
* chart. These algorithms use this margin to determine how close lines
* can be to an obstacle. The default is to compute this automatically
* from the size of the obstacles in the chart.
*
* To draw connecting lines close to existing points, set this to a low
* number. For more space around existing points, set this number
* higher.
*
* @sample gantt/pathfinder/algorithm-margin
* Small algorithmMargin
*
* @type {number}
* @since 6.2.0
* @apioption connectors.algorithmMargin
*/
/**
* Set the default pathfinder algorithm to use for this chart. It is
* possible to define your own algorithms by adding them to the
* Highcharts.Pathfinder.prototype.algorithms object before the chart
* has been created.
*
* The default algorithms are as follows:
*
* `straight`: Draws a straight line between the connecting
* points. Does not avoid other points when drawing.
*
* `simpleConnect`: Finds a path between the points using right angles
* only. Takes only starting/ending points into
* account, and will not avoid other points.
*
* `fastAvoid`: Finds a path between the points using right angles
* only. Will attempt to avoid other points, but its
* focus is performance over accuracy. Works well with
* less dense datasets.
*
* Default value: `straight` is used as default for most series types,
* while `simpleConnect` is used as default for Gantt series, to show
* dependencies between points.
*
* @sample gantt/pathfinder/demo
* Different types used
*
* @type {Highcharts.PathfinderTypeValue}
* @default undefined
* @since 6.2.0
*/
type: 'straight',
/**
* Set the default pixel width for this chart's Pathfinder connecting
* lines.
*
* @since 6.2.0
*/
lineWidth: 1,
/**
* Marker options for this chart's Pathfinder connectors. Note that
* this option is overridden by the `startMarker` and `endMarker`
* options.
*
* @declare Highcharts.ConnectorsMarkerOptions
* @since 6.2.0
*/
marker: {
/**
* Set the radius of the connector markers. The default is
* automatically computed based on the algorithmMargin setting.
*
* Setting marker.width and marker.height will override this
* setting.
*
* @type {number}
* @since 6.2.0
* @apioption connectors.marker.radius
*/
/**
* Set the width of the connector markers. If not supplied, this
* is inferred from the marker radius.
*
* @type {number}
* @since 6.2.0
* @apioption connectors.marker.width
*/
/**
* Set the height of the connector markers. If not supplied, this
* is inferred from the marker radius.
*
* @type {number}
* @since 6.2.0
* @apioption connectors.marker.height
*/
/**
* Set the color of the connector markers. By default this is the
* same as the connector color.
*
* @type {Highcharts.ColorString|Highcharts.GradientColorObject|Highcharts.PatternObject}
* @since 6.2.0
* @apioption connectors.marker.color
*/
/**
* Set the line/border color of the connector markers. By default
* this is the same as the marker color.
*
* @type {Highcharts.ColorString}
* @since 6.2.0
* @apioption connectors.marker.lineColor
*/
/**
* Enable markers for the connectors.
*/
enabled: false,
/**
* Horizontal alignment of the markers relative to the points.
*
* @type {Highcharts.AlignValue}
*/
align: 'center',
/**
* Vertical alignment of the markers relative to the points.
*
* @type {Highcharts.VerticalAlignValue}
*/
verticalAlign: 'middle',
/**
* Whether or not to draw the markers inside the points.
*/
inside: false,
/**
* Set the line/border width of the pathfinder markers.
*/
lineWidth: 1
},
/**
* Marker options specific to the start markers for this chart's
* Pathfinder connectors. Overrides the generic marker options.
*
* @declare Highcharts.ConnectorsStartMarkerOptions
* @extends connectors.marker
* @since 6.2.0
*/
startMarker: {
/**
* Set the symbol of the connector start markers.
*/
symbol: 'diamond'
},
/**
* Marker options specific to the end markers for this chart's
* Pathfinder connectors. Overrides the generic marker options.
*
* @declare Highcharts.ConnectorsEndMarkerOptions
* @extends connectors.marker
* @since 6.2.0
*/
endMarker: {
/**
* Set the symbol of the connector end markers.
*/
symbol: 'arrow-filled'
}
}
});
/**
* Override Pathfinder connector options for a series. Requires Highcharts Gantt
* to be loaded.
*
* @declare Highcharts.SeriesConnectorsOptionsObject
* @extends connectors
* @since 6.2.0
* @excluding enabled, algorithmMargin
* @product gantt
* @apioption plotOptions.series.connectors
*/
/**
* Connect to a point. This option can be either a string, referring to the ID
* of another point, or an object, or an array of either. If the option is an
* array, each element defines a connection.
*
* @sample gantt/pathfinder/demo
* Different connection types
*
* @declare Highcharts.XrangePointConnectorsOptionsObject
* @type {string|Array<string|*>|*}
* @extends plotOptions.series.connectors
* @since 6.2.0
* @excluding enabled
* @product gantt
* @requires highcharts-gantt
* @apioption series.xrange.data.connect
*/
/**
* The ID of the point to connect to.
*
* @type {string}
* @since 6.2.0
* @product gantt
* @apioption series.xrange.data.connect.to
*/
/**
* Get point bounding box using plotX/plotY and shapeArgs. If using
* graphic.getBBox() directly, the bbox will be affected by animation.
*
* @private
* @function
*
* @param {Highcharts.Point} point
* The point to get BB of.
*
* @return {Highcharts.Dictionary<number>|null}
* Result xMax, xMin, yMax, yMin.
*/
function getPointBB(point) {
var shapeArgs = point.shapeArgs, bb;
// Prefer using shapeArgs (columns)
if (shapeArgs) {
return {
xMin: shapeArgs.x,
xMax: shapeArgs.x + shapeArgs.width,
yMin: shapeArgs.y,
yMax: shapeArgs.y + shapeArgs.height
};
}
// Otherwise use plotX/plotY and bb
bb = point.graphic && point.graphic.getBBox();
return bb ? {
xMin: point.plotX - bb.width / 2,
xMax: point.plotX + bb.width / 2,
yMin: point.plotY - bb.height / 2,
yMax: point.plotY + bb.height / 2
} : null;
}
/**
* Calculate margin to place around obstacles for the pathfinder in pixels.
* Returns a minimum of 1 pixel margin.
*
* @private
* @function
*
* @param {Array<object>} obstacles
* Obstacles to calculate margin from.
*
* @return {number}
* The calculated margin in pixels. At least 1.
*/
function calculateObstacleMargin(obstacles) {
var len = obstacles.length, i = 0, j, obstacleDistance, distances = [],
// Compute smallest distance between two rectangles
distance = function (a, b, bbMargin) {
// Count the distance even if we are slightly off
var margin = pick(bbMargin, 10), yOverlap = a.yMax + margin > b.yMin - margin &&
a.yMin - margin < b.yMax + margin, xOverlap = a.xMax + margin > b.xMin - margin &&
a.xMin - margin < b.xMax + margin, xDistance = yOverlap ? (a.xMin > b.xMax ? a.xMin - b.xMax : b.xMin - a.xMax) : Infinity, yDistance = xOverlap ? (a.yMin > b.yMax ? a.yMin - b.yMax : b.yMin - a.yMax) : Infinity;
// If the rectangles collide, try recomputing with smaller margin.
// If they collide anyway, discard the obstacle.
if (xOverlap && yOverlap) {
return (margin ?
distance(a, b, Math.floor(margin / 2)) :
Infinity);
}
return min(xDistance, yDistance);
};
// Go over all obstacles and compare them to the others.
for (; i < len; ++i) {
// Compare to all obstacles ahead. We will already have compared this
// obstacle to the ones before.
for (j = i + 1; j < len; ++j) {
obstacleDistance = distance(obstacles[i], obstacles[j]);
// TODO: Magic number 80
if (obstacleDistance < 80) { // Ignore large distances
distances.push(obstacleDistance);
}
}
}
// Ensure we always have at least one value, even in very spaceous charts
distances.push(80);
return max(Math.floor(distances.sort(function (a, b) {
return (a - b);
})[
// Discard first 10% of the relevant distances, and then grab
// the smallest one.
Math.floor(distances.length / 10)] / 2 - 1 // Divide the distance by 2 and subtract 1.
), 1 // 1 is the minimum margin
);
}
/* eslint-disable no-invalid-this, valid-jsdoc */
/**
* The Connection class. Used internally to represent a connection between two
* points.
*
* @private
* @class
* @name Highcharts.Connection
*
* @param {Highcharts.Point} from
* Connection runs from this Point.
*
* @param {Highcharts.Point} to
* Connection runs to this Point.
*
* @param {Highcharts.ConnectorsOptions} [options]
* Connection options.
*/
function Connection(from, to, options) {
this.init(from, to, options);
}
Connection.prototype = {
/**
* Initialize the Connection object. Used as constructor only.
*
* @function Highcharts.Connection#init
*
* @param {Highcharts.Point} from
* Connection runs from this Point.
*
* @param {Highcharts.Point} to
* Connection runs to this Point.
*
* @param {Highcharts.ConnectorsOptions} [options]
* Connection options.
*/
init: function (from, to, options) {
this.fromPoint = from;
this.toPoint = to;
this.options = options;
this.chart = from.series.chart;
this.pathfinder = this.chart.pathfinder;
},
/**
* Add (or update) this connection's path on chart. Stores reference to the
* created element on this.graphics.path.
*
* @function Highcharts.Connection#renderPath
*
* @param {Highcharts.SVGPathArray} path
* Path to render, in array format. E.g. ['M', 0, 0, 'L', 10, 10]
*
* @param {Highcharts.SVGAttributes} [attribs]
* SVG attributes for the path.
*
* @param {Highcharts.AnimationOptionsObject} [animation]
* Animation options for the rendering.
*/
renderPath: function (path, attribs, animation) {
var connection = this, chart = this.chart, styledMode = chart.styledMode, pathfinder = chart.pathfinder, animate = !chart.options.chart.forExport && animation !== false, pathGraphic = connection.graphics && connection.graphics.path, anim;
// Add the SVG element of the pathfinder group if it doesn't exist
if (!pathfinder.group) {
pathfinder.group = chart.renderer.g()
.addClass('highcharts-pathfinder-group')
.attr({ zIndex: -1 })
.add(chart.seriesGroup);
}
// Shift the group to compensate for plot area.
// Note: Do this always (even when redrawing a path) to avoid issues
// when updating chart in a way that changes plot metrics.
pathfinder.group.translate(chart.plotLeft, chart.plotTop);
// Create path if does not exist
if (!(pathGraphic && pathGraphic.renderer)) {
pathGraphic = chart.renderer.path()
.add(pathfinder.group);
if (!styledMode) {
pathGraphic.attr({
opacity: 0
});
}
}
// Set path attribs and animate to the new path
pathGraphic.attr(attribs);
anim = { d: path };
if (!styledMode) {
anim.opacity = 1;
}
pathGraphic[animate ? 'animate' : 'attr'](anim, animation);
// Store reference on connection
this.graphics = this.graphics || {};
this.graphics.path = pathGraphic;
},
/**
* Calculate and add marker graphics for connection to the chart. The
* created/updated elements are stored on this.graphics.start and
* this.graphics.end.
*
* @function Highcharts.Connection#addMarker
*
* @param {string} type
* Marker type, either 'start' or 'end'.
*
* @param {Highcharts.ConnectorsMarkerOptions} options
* All options for this marker. Not calculated or merged with other
* options.
*
* @param {Highcharts.SVGPathArray} path
* Connection path in array format. This is used to calculate the
* rotation angle of the markers.
*/
addMarker: function (type, options, path) {
var connection = this, chart = connection.fromPoint.series.chart, pathfinder = chart.pathfinder, renderer = chart.renderer, point = (type === 'start' ?
connection.fromPoint :
connection.toPoint), anchor = point.getPathfinderAnchorPoint(options), markerVector, radians, rotation, box, width, height, pathVector, segment;
if (!options.enabled) {
return;
}
// Last vector before start/end of path, used to get angle
if (type === 'start') {
segment = path[1];
}
else { // 'end'
segment = path[path.length - 2];
}
if (segment && segment[0] === 'M' || segment[0] === 'L') {
pathVector = {
x: segment[1],
y: segment[2]
};
// Get angle between pathVector and anchor point and use it to
// create marker position.
radians = point.getRadiansToVector(pathVector, anchor);
markerVector = point.getMarkerVector(radians, options.radius, anchor);
// Rotation of marker is calculated from angle between pathVector
// and markerVector.
// (Note:
// Used to recalculate radians between markerVector and pathVector,
// but this should be the same as between pathVector and anchor.)
rotation = -radians / deg2rad;
if (options.width && options.height) {
width = options.width;
height = options.height;
}
else {
width = height = options.radius * 2;
}
// Add graphics object if it does not exist
connection.graphics = connection.graphics || {};
box = {
x: markerVector.x - (width / 2),
y: markerVector.y - (height / 2),
width: width,
height: height,
rotation: rotation,
rotationOriginX: markerVector.x,
rotationOriginY: markerVector.y
};
if (!connection.graphics[type]) {
// Create new marker element
connection.graphics[type] = renderer
.symbol(options.symbol)
.addClass('highcharts-point-connecting-path-' + type + '-marker')
.attr(box)
.add(pathfinder.group);
if (!renderer.styledMode) {
connection.graphics[type].attr({
fill: options.color || connection.fromPoint.color,
stroke: options.lineColor,
'stroke-width': options.lineWidth,
opacity: 0
})
.animate({
opacity: 1
}, point.series.options.animation);
}
}
else {
connection.graphics[type].animate(box);
}
}
},
/**
* Calculate and return connection path.
* Note: Recalculates chart obstacles on demand if they aren't calculated.
*
* @function Highcharts.Connection#getPath
*
* @param {Highcharts.ConnectorsOptions} options
* Connector options. Not calculated or merged with other options.
*
* @return {object|undefined}
* Calculated SVG path data in array format.
*/
getPath: function (options) {
var pathfinder = this.pathfinder, chart = this.chart, algorithm = pathfinder.algorithms[options.type], chartObstacles = pathfinder.chartObstacles;
if (typeof algorithm !== 'function') {
error('"' + options.type + '" is not a Pathfinder algorithm.');
return;
}
// This function calculates obstacles on demand if they don't exist
if (algorithm.requiresObstacles && !chartObstacles) {
chartObstacles =
pathfinder.chartObstacles =
pathfinder.getChartObstacles(options);
// If the algorithmMargin was computed, store the result in default
// options.
chart.options.connectors.algorithmMargin =
options.algorithmMargin;
// Cache some metrics too
pathfinder.chartObstacleMetrics =
pathfinder.getObstacleMetrics(chartObstacles);
}
// Get the SVG path
return algorithm(
// From
this.fromPoint.getPathfinderAnchorPoint(options.startMarker),
// To
this.toPoint.getPathfinderAnchorPoint(options.endMarker), merge({
chartObstacles: chartObstacles,
lineObstacles: pathfinder.lineObstacles || [],
obstacleMetrics: pathfinder.chartObstacleMetrics,
hardBounds: {
xMin: 0,
xMax: chart.plotWidth,
yMin: 0,
yMax: chart.plotHeight
},
obstacleOptions: {
margin: options.algorithmMargin
},
startDirectionX: pathfinder.getAlgorithmStartDirection(options.startMarker)
}, options));
},
/**
* (re)Calculate and (re)draw the connection.
*
* @function Highcharts.Connection#render
*/
render: function () {
var connection = this, fromPoint = connection.fromPoint, series = fromPoint.series, chart = series.chart, pathfinder = chart.pathfinder, pathResult, path, options = merge(chart.options.connectors, series.options.connectors, fromPoint.options.connectors, connection.options), attribs = {};
// Set path attribs
if (!chart.styledMode) {
attribs.stroke = options.lineColor || fromPoint.color;
attribs['stroke-width'] = options.lineWidth;
if (options.dashStyle) {
attribs.dashstyle = options.dashStyle;
}
}
attribs['class'] = // eslint-disable-line dot-notation
'highcharts-point-connecting-path ' +
'highcharts-color-' + fromPoint.colorIndex;
options = merge(attribs, options);
// Set common marker options
if (!defined(options.marker.radius)) {
options.marker.radius = min(max(Math.ceil((options.algorithmMargin || 8) / 2) - 1, 1), 5);
}
// Get the path
pathResult = connection.getPath(options);
path = pathResult.path;
// Always update obstacle storage with obstacles from this path.
// We don't know if future calls will need this for their algorithm.
if (pathResult.obstacles) {
pathfinder.lineObstacles =
pathfinder.lineObstacles || [];
pathfinder.lineObstacles =
pathfinder.lineObstacles.concat(pathResult.obstacles);
}
// Add the calculated path to the pathfinder group
connection.renderPath(path, attribs, series.options.animation);
// Render the markers
connection.addMarker('start', merge(options.marker, options.startMarker), path);
connection.addMarker('end', merge(options.marker, options.endMarker), path);
},
/**
* Destroy connection by destroying the added graphics elements.
*
* @function Highcharts.Connection#destroy
*/
destroy: function () {
if (this.graphics) {
objectEach(this.graphics, function (val) {
val.destroy();
});
delete this.graphics;
}
}
};
/**
* The Pathfinder class.
*
* @private
* @class
* @name Highcharts.Pathfinder
*
* @param {Highcharts.Chart} chart
* The chart to operate on.
*/
function Pathfinder(chart) {
this.init(chart);
}
Pathfinder.prototype = {
/**
* @name Highcharts.Pathfinder#algorithms
* @type {Highcharts.Dictionary<Function>}
*/
algorithms: pathfinderAlgorithms,
/**
* Initialize the Pathfinder object.
*
* @function Highcharts.Pathfinder#init
*
* @param {Highcharts.Chart} chart
* The chart context.
*/
init: function (chart) {
// Initialize pathfinder with chart context
this.chart = chart;
// Init connection reference list
this.connections = [];
// Recalculate paths/obstacles on chart redraw
addEvent(chart, 'redraw', function () {
this.pathfinder.update();
});
},
/**
* Update Pathfinder connections from scratch.
*
* @function Highcharts.Pathfinder#update
*
* @param {boolean} [deferRender]
* Whether or not to defer rendering of connections until
* series.afterAnimate event has fired. Used on first render.
*/
update: function (deferRender) {
var chart = this.chart, pathfinder = this, oldConnections = pathfinder.connections;
// Rebuild pathfinder connections from options
pathfinder.connections = [];
chart.series.forEach(function (series) {
if (series.visible && !series.options.isInternal) {
series.points.forEach(function (point) {
var to, connects = (point.options &&
point.options.connect &&
splat(point.options.connect));
if (point.visible && point.isInside !== false && connects) {
connects.forEach(function (connect) {
to = chart.get(typeof connect === 'string' ?
connect : connect.to);
if (to instanceof Point &&
to.series.visible &&
to.visible &&
to.isInside !== false) {
// Add new connection
pathfinder.connections.push(new Connection(point, // from
to, typeof connect === 'string' ?
{} :
connect));
}
});
}
});
}
});
// Clear connections that should not be updated, and move old info over
// to new connections.
for (var j = 0, k, found, lenOld = oldConnections.length, lenNew = pathfinder.connections.length; j < lenOld; ++j) {
found = false;
for (k = 0; k < lenNew; ++k) {
if (oldConnections[j].fromPoint ===
pathfinder.connections[k].fromPoint &&
oldConnections[j].toPoint ===
pathfinder.connections[k].toPoint) {
pathfinder.connections[k].graphics =
oldConnections[j].graphics;
found = true;
break;
}
}
if (!found) {
oldConnections[j].destroy();
}
}
// Clear obstacles to force recalculation. This must be done on every
// redraw in case positions have changed. Recalculation is handled in
// Connection.getPath on demand.
delete this.chartObstacles;
delete this.lineObstacles;
// Draw the pending connections
pathfinder.renderConnections(deferRender);
},
/**
* Draw the chart's connecting paths.
*
* @function Highcharts.Pathfinder#renderConnections
*
* @param {boolean} [deferRender]
* Whether or not to defer render until series animation is finished.
* Used on first render.
*/
renderConnections: function (deferRender) {
if (deferRender) {
// Render after series are done animating
this.chart.series.forEach(function (series) {
var render = function () {
// Find pathfinder connections belonging to this series
// that haven't rendered, and render them now.
var pathfinder = series.chart.pathfinder, conns = pathfinder && pathfinder.connections || [];
conns.forEach(function (connection) {
if (connection.fromPoint &&
connection.fromPoint.series === series) {
connection.render();
}
});
if (series.pathfinderRemoveRenderEvent) {
series.pathfinderRemoveRenderEvent();
delete series.pathfinderRemoveRenderEvent;
}
};
if (series.options.animation === false) {
render();
}
else {
series.pathfinderRemoveRenderEvent = addEvent(series, 'afterAnimate', render);
}
});
}
else {
// Go through connections and render them
this.connections.forEach(function (connection) {
connection.render();
});
}
},
/**
* Get obstacles for the points in the chart. Does not include connecting
* lines from Pathfinder. Applies algorithmMargin to the obstacles.
*
* @function Highcharts.Pathfinder#getChartObstacles
*
* @param {object} options
* Options for the calculation. Currenlty only
* options.algorithmMargin.
*
* @return {Array<object>}
* An array of calculated obstacles. Each obstacle is defined as an
* object with xMin, xMax, yMin and yMax properties.
*/
getChartObstacles: function (options) {
var obstacles = [], series = this.chart.series, margin = pick(options.algorithmMargin, 0), calculatedMargin;
for (var i = 0, sLen = series.length; i < sLen; ++i) {
if (series[i].visible && !series[i].options.isInternal) {
for (var j = 0, pLen = series[i].points.length, bb, point; j < pLen; ++j) {
point = series[i].points[j];
if (point.visible) {
bb = getPointBB(point);
if (bb) {
obstacles.push({
xMin: bb.xMin - margin,
xMax: bb.xMax + margin,
yMin: bb.yMin - margin,
yMax: bb.yMax + margin
});
}
}
}
}
}
// Sort obstacles by xMin for optimization
obstacles = obstacles.sort(function (a, b) {
return a.xMin - b.xMin;
});
// Add auto-calculated margin if the option is not defined
if (!defined(options.algorithmMargin)) {
calculatedMargin =
options.algorithmMargin =
calculateObstacleMargin(obstacles);
obstacles.forEach(function (obstacle) {
obstacle.xMin -= calculatedMargin;
obstacle.xMax += calculatedMargin;
obstacle.yMin -= calculatedMargin;
obstacle.yMax += calculatedMargin;
});
}
return obstacles;
},
/**
* Utility function to get metrics for obstacles:
* - Widest obstacle width
* - Tallest obstacle height
*
* @function Highcharts.Pathfinder#getObstacleMetrics
*
* @param {Array<object>} obstacles
* An array of obstacles to inspect.
*
* @return {object}
* The calculated metrics, as an object with maxHeight and maxWidth
* properties.
*/
getObstacleMetrics: function (obstacles) {
var maxWidth = 0, maxHeight = 0, width, height, i = obstacles.length;
while (i--) {
width = obstacles[i].xMax - obstacles[i].xMin;
height = obstacles[i].yMax - obstacles[i].yMin;
if (maxWidth < width) {
maxWidth = width;
}
if (maxHeight < height) {
maxHeight = height;
}
}
return {
maxHeight: maxHeight,
maxWidth: maxWidth
};
},
/**
* Utility to get which direction to start the pathfinding algorithm
* (X vs Y), calculated from a set of marker options.
*
* @function Highcharts.Pathfinder#getAlgorithmStartDirection
*
* @param {Highcharts.ConnectorsMarkerOptions} markerOptions
* Marker options to calculate from.
*
* @return {boolean}
* Returns true for X, false for Y, and undefined for autocalculate.
*/
getAlgorithmStartDirection: function (markerOptions) {
var xCenter = markerOptions.align !== 'left' &&
markerOptions.align !== 'right', yCenter = markerOptions.verticalAlign !== 'top' &&
markerOptions.verticalAlign !== 'bottom', undef;
return xCenter ?
(yCenter ? undef : false) : // x is centered
(yCenter ? true : undef); // x is off-center
}
};
// Add to Highcharts namespace
H.Connection = Connection;
H.Pathfinder = Pathfinder;
// Add pathfinding capabilities to Points
extend(Point.prototype, /** @lends Point.prototype */ {
/**
* Get coordinates of anchor point for pathfinder connection.
*
* @private
* @function Highcharts.Point#getPathfinderAnchorPoint
*
* @param {Highcharts.ConnectorsMarkerOptions} markerOptions
* Connection options for position on point.
*
* @return {Highcharts.PositionObject}
* An object with x/y properties for the position. Coordinates are
* in plot values, not relative to point.
*/
getPathfinderAnchorPoint: function (markerOptions) {
var bb = getPointBB(this), x, y;
switch (markerOptions.align) { // eslint-disable-line default-case
case 'right':
x = 'xMax';
break;
case 'left':
x = 'xMin';
}
switch (markerOptions.verticalAlign) { // eslint-disable-line default-case
case 'top':
y = 'yMin';
break;
case 'bottom':
y = 'yMax';
}
return {
x: x ? bb[x] : (bb.xMin + bb.xMax) / 2,
y: y ? bb[y] : (bb.yMin + bb.yMax) / 2
};
},
/**
* Utility to get the angle from one point to another.
*
* @private
* @function Highcharts.Point#getRadiansToVector
*
* @param {Highcharts.PositionObject} v1
* The first vector, as an object with x/y properties.
*
* @param {Highcharts.PositionObject} v2
* The second vector, as an object with x/y properties.
*
* @return {number}
* The angle in degrees
*/
getRadiansToVector: function (v1, v2) {
var box;
if (!defined(v2)) {
box = getPointBB(this);
if (box) {
v2 = {
x: (box.xMin + box.xMax) / 2,
y: (box.yMin + box.yMax) / 2
};
}
}
return Math.atan2(v2.y - v1.y, v1.x - v2.x);
},
/**
* Utility to get the position of the marker, based on the path angle and
* the marker's radius.
*
* @private
* @function Highcharts.Point#getMarkerVector
*
* @param {number} radians
* The angle in radians from the point center to another vector.
*
* @param {number} markerRadius
* The radius of the marker, to calculate the additional distance to
* the center of the marker.
*
* @param {object} anchor
* The anchor point of the path and marker as an object with x/y
* properties.
*
* @return {object}
* The marker vector as an object with x/y properties.
*/
getMarkerVector: function (radians, markerRadius, anchor) {
var twoPI = Math.PI * 2.0, theta = radians, bb = getPointBB(this), rectWidth = bb.xMax - bb.xMin, rectHeight = bb.yMax - bb.yMin, rAtan = Math.atan2(rectHeight, rectWidth), tanTheta = 1, leftOrRightRegion = false, rectHalfWidth = rectWidth / 2.0, rectHalfHeight = rectHeight / 2.0, rectHorizontalCenter = bb.xMin + rectHalfWidth, rectVerticalCenter = bb.yMin + rectHalfHeight, edgePoint = {
x: rectHorizontalCenter,
y: rectVerticalCenter
}, markerPoint = {}, xFactor = 1, yFactor = 1;
while (theta < -Math.PI) {
theta += twoPI;
}
while (theta > Math.PI) {
theta -= twoPI;
}
tanTheta = Math.tan(theta);
if ((theta > -rAtan) && (theta <= rAtan)) {
// Right side
yFactor = -1;
leftOrRightRegion = true;
}
else if (theta > rAtan && theta <= (Math.PI - rAtan)) {
// Top side
yFactor = -1;
}
else if (theta > (Math.PI - rAtan) || theta <= -(Math.PI - rAtan)) {
// Left side
xFactor = -1;
leftOrRightRegion = true;
}
else {
// Bottom side
xFactor = -1;
}
// Correct the edgePoint according to the placement of the marker
if (leftOrRightRegion) {
edgePoint.x += xFactor * (rectHalfWidth);
edgePoint.y += yFactor * (rectHalfWidth) * tanTheta;
}
else {
edgePoint.x += xFactor * (rectHeight / (2.0 * tanTheta));
edgePoint.y += yFactor * (rectHalfHeight);
}
if (anchor.x !== rectHorizontalCenter) {
edgePoint.x = anchor.x;
}
if (anchor.y !== rectVerticalCenter) {
edgePoint.y = anchor.y;
}
markerPoint.x = edgePoint.x + (markerRadius * Math.cos(theta));
markerPoint.y = edgePoint.y - (markerRadius * Math.sin(theta));
return markerPoint;
}
});
/**
* Warn if using legacy options. Copy the options over. Note that this will
* still break if using the legacy options in chart.update, addSeries etc.
* @private
*/
function warnLegacy(chart) {
if (chart.options.pathfinder ||
chart.series.reduce(function (acc, series) {
if (series.options) {
merge(true, (series.options.connectors = series.options.connectors ||
{}), series.options.pathfinder);
}
return acc || series.options && series.options.pathfinder;
}, false)) {
merge(true, (chart.options.connectors = chart.options.connectors || {}), chart.options.pathfinder);
error('WARNING: Pathfinder options have been renamed. ' +
'Use "chart.connectors" or "series.connectors" instead.');
}
}
// Initialize Pathfinder for charts
H.Chart.prototype.callbacks.push(function (chart) {
var options = chart.options;
if (options.connectors.enabled !== false) {
warnLegacy(chart);
this.pathfinder = new Pathfinder(this);
this.pathfinder.update(true); // First draw, defer render
}
});
});
_registerModule(_modules, 'masters/modules/pathfinder.src.js', [], function () {
});
}));
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