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Copy pathMotionPathPlugin.js
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MotionPathPlugin.js
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(function (global, factory) {
typeof exports === 'object' && typeof module !== 'undefined' ? factory(exports) :
typeof define === 'function' && define.amd ? define(['exports'], factory) :
(global = global || self, factory(global.window = global.window || {}));
}(this, (function (exports) { 'use strict';
var _svgPathExp = /[achlmqstvz]|(-?\d*\.?\d*(?:e[\-+]?\d+)?)[0-9]/ig,
_numbersExp = /(?:(-)?\d*\.?\d*(?:e[\-+]?\d+)?)[0-9]/ig,
_scientific = /[\+\-]?\d*\.?\d+e[\+\-]?\d+/ig,
_selectorExp = /(^[#\.][a-z]|[a-y][a-z])/i,
_DEG2RAD = Math.PI / 180,
_RAD2DEG = 180 / Math.PI,
_sin = Math.sin,
_cos = Math.cos,
_abs = Math.abs,
_sqrt = Math.sqrt,
_atan2 = Math.atan2,
_largeNum = 1e8,
_isString = function _isString(value) {
return typeof value === "string";
},
_isNumber = function _isNumber(value) {
return typeof value === "number";
},
_isUndefined = function _isUndefined(value) {
return typeof value === "undefined";
},
_temp = {},
_temp2 = {},
_roundingNum = 1e5,
_wrapProgress = function _wrapProgress(progress) {
return Math.round((progress + _largeNum) % 1 * _roundingNum) / _roundingNum || (progress < 0 ? 0 : 1);
},
_round = function _round(value) {
return Math.round(value * _roundingNum) / _roundingNum || 0;
},
_roundPrecise = function _roundPrecise(value) {
return Math.round(value * 1e10) / 1e10 || 0;
},
_splitSegment = function _splitSegment(rawPath, segIndex, i, t) {
var segment = rawPath[segIndex],
shift = t === 1 ? 6 : subdivideSegment(segment, i, t);
if ((shift || !t) && shift + i + 2 < segment.length) {
rawPath.splice(segIndex, 0, segment.slice(0, i + shift + 2));
segment.splice(0, i + shift);
return 1;
}
},
_getSampleIndex = function _getSampleIndex(samples, length, progress) {
var l = samples.length,
i = ~~(progress * l);
if (samples[i] > length) {
while (--i && samples[i] > length) {}
i < 0 && (i = 0);
} else {
while (samples[++i] < length && i < l) {}
}
return i < l ? i : l - 1;
},
_reverseRawPath = function _reverseRawPath(rawPath, skipOuter) {
var i = rawPath.length;
skipOuter || rawPath.reverse();
while (i--) {
rawPath[i].reversed || reverseSegment(rawPath[i]);
}
},
_copyMetaData = function _copyMetaData(source, copy) {
copy.totalLength = source.totalLength;
if (source.samples) {
copy.samples = source.samples.slice(0);
copy.lookup = source.lookup.slice(0);
copy.minLength = source.minLength;
copy.resolution = source.resolution;
} else if (source.totalPoints) {
copy.totalPoints = source.totalPoints;
}
return copy;
},
_appendOrMerge = function _appendOrMerge(rawPath, segment) {
var index = rawPath.length,
prevSeg = rawPath[index - 1] || [],
l = prevSeg.length;
if (index && segment[0] === prevSeg[l - 2] && segment[1] === prevSeg[l - 1]) {
segment = prevSeg.concat(segment.slice(2));
index--;
}
rawPath[index] = segment;
};
function getRawPath(value) {
value = _isString(value) && _selectorExp.test(value) ? document.querySelector(value) || value : value;
var e = value.getAttribute ? value : 0,
rawPath;
if (e && (value = value.getAttribute("d"))) {
if (!e._gsPath) {
e._gsPath = {};
}
rawPath = e._gsPath[value];
return rawPath && !rawPath._dirty ? rawPath : e._gsPath[value] = stringToRawPath(value);
}
return !value ? console.warn("Expecting a <path> element or an SVG path data string") : _isString(value) ? stringToRawPath(value) : _isNumber(value[0]) ? [value] : value;
}
function copyRawPath(rawPath) {
var a = [],
i = 0;
for (; i < rawPath.length; i++) {
a[i] = _copyMetaData(rawPath[i], rawPath[i].slice(0));
}
return _copyMetaData(rawPath, a);
}
function reverseSegment(segment) {
var i = 0,
y;
segment.reverse();
for (; i < segment.length; i += 2) {
y = segment[i];
segment[i] = segment[i + 1];
segment[i + 1] = y;
}
segment.reversed = !segment.reversed;
}
var _createPath = function _createPath(e, ignore) {
var path = document.createElementNS("http://www.w3.org/2000/svg", "path"),
attr = [].slice.call(e.attributes),
i = attr.length,
name;
ignore = "," + ignore + ",";
while (--i > -1) {
name = attr[i].nodeName.toLowerCase();
if (ignore.indexOf("," + name + ",") < 0) {
path.setAttributeNS(null, name, attr[i].nodeValue);
}
}
return path;
},
_typeAttrs = {
rect: "rx,ry,x,y,width,height",
circle: "r,cx,cy",
ellipse: "rx,ry,cx,cy",
line: "x1,x2,y1,y2"
},
_attrToObj = function _attrToObj(e, attrs) {
var props = attrs ? attrs.split(",") : [],
obj = {},
i = props.length;
while (--i > -1) {
obj[props[i]] = +e.getAttribute(props[i]) || 0;
}
return obj;
};
function convertToPath(element, swap) {
var type = element.tagName.toLowerCase(),
circ = 0.552284749831,
data,
x,
y,
r,
ry,
path,
rcirc,
rycirc,
points,
w,
h,
x2,
x3,
x4,
x5,
x6,
y2,
y3,
y4,
y5,
y6,
attr;
if (type === "path" || !element.getBBox) {
return element;
}
path = _createPath(element, "x,y,width,height,cx,cy,rx,ry,r,x1,x2,y1,y2,points");
attr = _attrToObj(element, _typeAttrs[type]);
if (type === "rect") {
r = attr.rx;
ry = attr.ry || r;
x = attr.x;
y = attr.y;
w = attr.width - r * 2;
h = attr.height - ry * 2;
if (r || ry) {
x2 = x + r * (1 - circ);
x3 = x + r;
x4 = x3 + w;
x5 = x4 + r * circ;
x6 = x4 + r;
y2 = y + ry * (1 - circ);
y3 = y + ry;
y4 = y3 + h;
y5 = y4 + ry * circ;
y6 = y4 + ry;
data = "M" + x6 + "," + y3 + " V" + y4 + " C" + [x6, y5, x5, y6, x4, y6, x4 - (x4 - x3) / 3, y6, x3 + (x4 - x3) / 3, y6, x3, y6, x2, y6, x, y5, x, y4, x, y4 - (y4 - y3) / 3, x, y3 + (y4 - y3) / 3, x, y3, x, y2, x2, y, x3, y, x3 + (x4 - x3) / 3, y, x4 - (x4 - x3) / 3, y, x4, y, x5, y, x6, y2, x6, y3].join(",") + "z";
} else {
data = "M" + (x + w) + "," + y + " v" + h + " h" + -w + " v" + -h + " h" + w + "z";
}
} else if (type === "circle" || type === "ellipse") {
if (type === "circle") {
r = ry = attr.r;
rycirc = r * circ;
} else {
r = attr.rx;
ry = attr.ry;
rycirc = ry * circ;
}
x = attr.cx;
y = attr.cy;
rcirc = r * circ;
data = "M" + (x + r) + "," + y + " C" + [x + r, y + rycirc, x + rcirc, y + ry, x, y + ry, x - rcirc, y + ry, x - r, y + rycirc, x - r, y, x - r, y - rycirc, x - rcirc, y - ry, x, y - ry, x + rcirc, y - ry, x + r, y - rycirc, x + r, y].join(",") + "z";
} else if (type === "line") {
data = "M" + attr.x1 + "," + attr.y1 + " L" + attr.x2 + "," + attr.y2;
} else if (type === "polyline" || type === "polygon") {
points = (element.getAttribute("points") + "").match(_numbersExp) || [];
x = points.shift();
y = points.shift();
data = "M" + x + "," + y + " L" + points.join(",");
if (type === "polygon") {
data += "," + x + "," + y + "z";
}
}
path.setAttribute("d", rawPathToString(path._gsRawPath = stringToRawPath(data)));
if (swap && element.parentNode) {
element.parentNode.insertBefore(path, element);
element.parentNode.removeChild(element);
}
return path;
}
function getRotationAtBezierT(segment, i, t) {
var a = segment[i],
b = segment[i + 2],
c = segment[i + 4],
x;
a += (b - a) * t;
b += (c - b) * t;
a += (b - a) * t;
x = b + (c + (segment[i + 6] - c) * t - b) * t - a;
a = segment[i + 1];
b = segment[i + 3];
c = segment[i + 5];
a += (b - a) * t;
b += (c - b) * t;
a += (b - a) * t;
return _round(_atan2(b + (c + (segment[i + 7] - c) * t - b) * t - a, x) * _RAD2DEG);
}
function sliceRawPath(rawPath, start, end) {
end = _isUndefined(end) ? 1 : _roundPrecise(end) || 0;
start = _roundPrecise(start) || 0;
var loops = Math.max(0, ~~(_abs(end - start) - 1e-8)),
path = copyRawPath(rawPath);
if (start > end) {
start = 1 - start;
end = 1 - end;
_reverseRawPath(path);
path.totalLength = 0;
}
if (start < 0 || end < 0) {
var offset = Math.abs(~~Math.min(start, end)) + 1;
start += offset;
end += offset;
}
path.totalLength || cacheRawPathMeasurements(path);
var wrap = end > 1,
s = getProgressData(path, start, _temp, true),
e = getProgressData(path, end, _temp2),
eSeg = e.segment,
sSeg = s.segment,
eSegIndex = e.segIndex,
sSegIndex = s.segIndex,
ei = e.i,
si = s.i,
sameSegment = sSegIndex === eSegIndex,
sameBezier = ei === si && sameSegment,
wrapsBehind,
sShift,
eShift,
i,
copy,
totalSegments,
l,
j;
if (wrap || loops) {
wrapsBehind = eSegIndex < sSegIndex || sameSegment && ei < si || sameBezier && e.t < s.t;
if (_splitSegment(path, sSegIndex, si, s.t)) {
sSegIndex++;
if (!wrapsBehind) {
eSegIndex++;
if (sameBezier) {
e.t = (e.t - s.t) / (1 - s.t);
ei = 0;
} else if (sameSegment) {
ei -= si;
}
}
}
if (Math.abs(1 - (end - start)) < 1e-5) {
eSegIndex = sSegIndex - 1;
} else if (!e.t && eSegIndex) {
eSegIndex--;
} else if (_splitSegment(path, eSegIndex, ei, e.t) && wrapsBehind) {
sSegIndex++;
}
if (s.t === 1) {
sSegIndex = (sSegIndex + 1) % path.length;
}
copy = [];
totalSegments = path.length;
l = 1 + totalSegments * loops;
j = sSegIndex;
l += (totalSegments - sSegIndex + eSegIndex) % totalSegments;
for (i = 0; i < l; i++) {
_appendOrMerge(copy, path[j++ % totalSegments]);
}
path = copy;
} else {
eShift = e.t === 1 ? 6 : subdivideSegment(eSeg, ei, e.t);
if (start !== end) {
sShift = subdivideSegment(sSeg, si, sameBezier ? s.t / e.t : s.t);
sameSegment && (eShift += sShift);
eSeg.splice(ei + eShift + 2);
(sShift || si) && sSeg.splice(0, si + sShift);
i = path.length;
while (i--) {
(i < sSegIndex || i > eSegIndex) && path.splice(i, 1);
}
} else {
eSeg.angle = getRotationAtBezierT(eSeg, ei + eShift, 0);
ei += eShift;
s = eSeg[ei];
e = eSeg[ei + 1];
eSeg.length = eSeg.totalLength = 0;
eSeg.totalPoints = path.totalPoints = 8;
eSeg.push(s, e, s, e, s, e, s, e);
}
}
path.totalLength = 0;
return path;
}
function measureSegment(segment, startIndex, bezierQty) {
startIndex = startIndex || 0;
if (!segment.samples) {
segment.samples = [];
segment.lookup = [];
}
var resolution = ~~segment.resolution || 12,
inc = 1 / resolution,
endIndex = bezierQty ? startIndex + bezierQty * 6 + 1 : segment.length,
x1 = segment[startIndex],
y1 = segment[startIndex + 1],
samplesIndex = startIndex ? startIndex / 6 * resolution : 0,
samples = segment.samples,
lookup = segment.lookup,
min = (startIndex ? segment.minLength : _largeNum) || _largeNum,
prevLength = samples[samplesIndex + bezierQty * resolution - 1],
length = startIndex ? samples[samplesIndex - 1] : 0,
i,
j,
x4,
x3,
x2,
xd,
xd1,
y4,
y3,
y2,
yd,
yd1,
inv,
t,
lengthIndex,
l,
segLength;
samples.length = lookup.length = 0;
for (j = startIndex + 2; j < endIndex; j += 6) {
x4 = segment[j + 4] - x1;
x3 = segment[j + 2] - x1;
x2 = segment[j] - x1;
y4 = segment[j + 5] - y1;
y3 = segment[j + 3] - y1;
y2 = segment[j + 1] - y1;
xd = xd1 = yd = yd1 = 0;
if (_abs(x4) < .01 && _abs(y4) < .01 && _abs(x2) + _abs(y2) < .01) {
if (segment.length > 8) {
segment.splice(j, 6);
j -= 6;
endIndex -= 6;
}
} else {
for (i = 1; i <= resolution; i++) {
t = inc * i;
inv = 1 - t;
xd = xd1 - (xd1 = (t * t * x4 + 3 * inv * (t * x3 + inv * x2)) * t);
yd = yd1 - (yd1 = (t * t * y4 + 3 * inv * (t * y3 + inv * y2)) * t);
l = _sqrt(yd * yd + xd * xd);
if (l < min) {
min = l;
}
length += l;
samples[samplesIndex++] = length;
}
}
x1 += x4;
y1 += y4;
}
if (prevLength) {
prevLength -= length;
for (; samplesIndex < samples.length; samplesIndex++) {
samples[samplesIndex] += prevLength;
}
}
if (samples.length && min) {
segment.totalLength = segLength = samples[samples.length - 1] || 0;
segment.minLength = min;
if (segLength / min < 9999) {
l = lengthIndex = 0;
for (i = 0; i < segLength; i += min) {
lookup[l++] = samples[lengthIndex] < i ? ++lengthIndex : lengthIndex;
}
}
} else {
segment.totalLength = samples[0] = 0;
}
return startIndex ? length - samples[startIndex / 2 - 1] : length;
}
function cacheRawPathMeasurements(rawPath, resolution) {
var pathLength, points, i;
for (i = pathLength = points = 0; i < rawPath.length; i++) {
rawPath[i].resolution = ~~resolution || 12;
points += rawPath[i].length;
pathLength += measureSegment(rawPath[i]);
}
rawPath.totalPoints = points;
rawPath.totalLength = pathLength;
return rawPath;
}
function subdivideSegment(segment, i, t) {
if (t <= 0 || t >= 1) {
return 0;
}
var ax = segment[i],
ay = segment[i + 1],
cp1x = segment[i + 2],
cp1y = segment[i + 3],
cp2x = segment[i + 4],
cp2y = segment[i + 5],
bx = segment[i + 6],
by = segment[i + 7],
x1a = ax + (cp1x - ax) * t,
x2 = cp1x + (cp2x - cp1x) * t,
y1a = ay + (cp1y - ay) * t,
y2 = cp1y + (cp2y - cp1y) * t,
x1 = x1a + (x2 - x1a) * t,
y1 = y1a + (y2 - y1a) * t,
x2a = cp2x + (bx - cp2x) * t,
y2a = cp2y + (by - cp2y) * t;
x2 += (x2a - x2) * t;
y2 += (y2a - y2) * t;
segment.splice(i + 2, 4, _round(x1a), _round(y1a), _round(x1), _round(y1), _round(x1 + (x2 - x1) * t), _round(y1 + (y2 - y1) * t), _round(x2), _round(y2), _round(x2a), _round(y2a));
segment.samples && segment.samples.splice(i / 6 * segment.resolution | 0, 0, 0, 0, 0, 0, 0, 0);
return 6;
}
function getProgressData(rawPath, progress, decoratee, pushToNextIfAtEnd) {
decoratee = decoratee || {};
rawPath.totalLength || cacheRawPathMeasurements(rawPath);
if (progress < 0 || progress > 1) {
progress = _wrapProgress(progress);
}
var segIndex = 0,
segment = rawPath[0],
samples,
resolution,
length,
min,
max,
i,
t;
if (!progress) {
t = i = segIndex = 0;
segment = rawPath[0];
} else if (progress === 1) {
t = 1;
segIndex = rawPath.length - 1;
segment = rawPath[segIndex];
i = segment.length - 8;
} else {
if (rawPath.length > 1) {
length = rawPath.totalLength * progress;
max = i = 0;
while ((max += rawPath[i++].totalLength) < length) {
segIndex = i;
}
segment = rawPath[segIndex];
min = max - segment.totalLength;
progress = (length - min) / (max - min) || 0;
}
samples = segment.samples;
resolution = segment.resolution;
length = segment.totalLength * progress;
i = segment.lookup.length ? segment.lookup[~~(length / segment.minLength)] || 0 : _getSampleIndex(samples, length, progress);
min = i ? samples[i - 1] : 0;
max = samples[i];
if (max < length) {
min = max;
max = samples[++i];
}
t = 1 / resolution * ((length - min) / (max - min) + i % resolution);
i = ~~(i / resolution) * 6;
if (pushToNextIfAtEnd && t === 1) {
if (i + 6 < segment.length) {
i += 6;
t = 0;
} else if (segIndex + 1 < rawPath.length) {
i = t = 0;
segment = rawPath[++segIndex];
}
}
}
decoratee.t = t;
decoratee.i = i;
decoratee.path = rawPath;
decoratee.segment = segment;
decoratee.segIndex = segIndex;
return decoratee;
}
function getPositionOnPath(rawPath, progress, includeAngle, point) {
var segment = rawPath[0],
result = point || {},
samples,
resolution,
length,
min,
max,
i,
t,
a,
inv;
if (progress < 0 || progress > 1) {
progress = _wrapProgress(progress);
}
segment.lookup || cacheRawPathMeasurements(rawPath);
if (rawPath.length > 1) {
length = rawPath.totalLength * progress;
max = i = 0;
while ((max += rawPath[i++].totalLength) < length) {
segment = rawPath[i];
}
min = max - segment.totalLength;
progress = (length - min) / (max - min) || 0;
}
samples = segment.samples;
resolution = segment.resolution;
length = segment.totalLength * progress;
i = segment.lookup.length ? segment.lookup[progress < 1 ? ~~(length / segment.minLength) : segment.lookup.length - 1] || 0 : _getSampleIndex(samples, length, progress);
min = i ? samples[i - 1] : 0;
max = samples[i];
if (max < length) {
min = max;
max = samples[++i];
}
t = 1 / resolution * ((length - min) / (max - min) + i % resolution) || 0;
inv = 1 - t;
i = ~~(i / resolution) * 6;
a = segment[i];
result.x = _round((t * t * (segment[i + 6] - a) + 3 * inv * (t * (segment[i + 4] - a) + inv * (segment[i + 2] - a))) * t + a);
result.y = _round((t * t * (segment[i + 7] - (a = segment[i + 1])) + 3 * inv * (t * (segment[i + 5] - a) + inv * (segment[i + 3] - a))) * t + a);
if (includeAngle) {
result.angle = segment.totalLength ? getRotationAtBezierT(segment, i, t >= 1 ? 1 - 1e-9 : t ? t : 1e-9) : segment.angle || 0;
}
return result;
}
function transformRawPath(rawPath, a, b, c, d, tx, ty) {
var j = rawPath.length,
segment,
l,
i,
x,
y;
while (--j > -1) {
segment = rawPath[j];
l = segment.length;
for (i = 0; i < l; i += 2) {
x = segment[i];
y = segment[i + 1];
segment[i] = x * a + y * c + tx;
segment[i + 1] = x * b + y * d + ty;
}
}
rawPath._dirty = 1;
return rawPath;
}
function arcToSegment(lastX, lastY, rx, ry, angle, largeArcFlag, sweepFlag, x, y) {
if (lastX === x && lastY === y) {
return;
}
rx = _abs(rx);
ry = _abs(ry);
var angleRad = angle % 360 * _DEG2RAD,
cosAngle = _cos(angleRad),
sinAngle = _sin(angleRad),
PI = Math.PI,
TWOPI = PI * 2,
dx2 = (lastX - x) / 2,
dy2 = (lastY - y) / 2,
x1 = cosAngle * dx2 + sinAngle * dy2,
y1 = -sinAngle * dx2 + cosAngle * dy2,
x1_sq = x1 * x1,
y1_sq = y1 * y1,
radiiCheck = x1_sq / (rx * rx) + y1_sq / (ry * ry);
if (radiiCheck > 1) {
rx = _sqrt(radiiCheck) * rx;
ry = _sqrt(radiiCheck) * ry;
}
var rx_sq = rx * rx,
ry_sq = ry * ry,
sq = (rx_sq * ry_sq - rx_sq * y1_sq - ry_sq * x1_sq) / (rx_sq * y1_sq + ry_sq * x1_sq);
if (sq < 0) {
sq = 0;
}
var coef = (largeArcFlag === sweepFlag ? -1 : 1) * _sqrt(sq),
cx1 = coef * (rx * y1 / ry),
cy1 = coef * -(ry * x1 / rx),
sx2 = (lastX + x) / 2,
sy2 = (lastY + y) / 2,
cx = sx2 + (cosAngle * cx1 - sinAngle * cy1),
cy = sy2 + (sinAngle * cx1 + cosAngle * cy1),
ux = (x1 - cx1) / rx,
uy = (y1 - cy1) / ry,
vx = (-x1 - cx1) / rx,
vy = (-y1 - cy1) / ry,
temp = ux * ux + uy * uy,
angleStart = (uy < 0 ? -1 : 1) * Math.acos(ux / _sqrt(temp)),
angleExtent = (ux * vy - uy * vx < 0 ? -1 : 1) * Math.acos((ux * vx + uy * vy) / _sqrt(temp * (vx * vx + vy * vy)));
isNaN(angleExtent) && (angleExtent = PI);
if (!sweepFlag && angleExtent > 0) {
angleExtent -= TWOPI;
} else if (sweepFlag && angleExtent < 0) {
angleExtent += TWOPI;
}
angleStart %= TWOPI;
angleExtent %= TWOPI;
var segments = Math.ceil(_abs(angleExtent) / (TWOPI / 4)),
rawPath = [],
angleIncrement = angleExtent / segments,
controlLength = 4 / 3 * _sin(angleIncrement / 2) / (1 + _cos(angleIncrement / 2)),
ma = cosAngle * rx,
mb = sinAngle * rx,
mc = sinAngle * -ry,
md = cosAngle * ry,
i;
for (i = 0; i < segments; i++) {
angle = angleStart + i * angleIncrement;
x1 = _cos(angle);
y1 = _sin(angle);
ux = _cos(angle += angleIncrement);
uy = _sin(angle);
rawPath.push(x1 - controlLength * y1, y1 + controlLength * x1, ux + controlLength * uy, uy - controlLength * ux, ux, uy);
}
for (i = 0; i < rawPath.length; i += 2) {
x1 = rawPath[i];
y1 = rawPath[i + 1];
rawPath[i] = x1 * ma + y1 * mc + cx;
rawPath[i + 1] = x1 * mb + y1 * md + cy;
}
rawPath[i - 2] = x;
rawPath[i - 1] = y;
return rawPath;
}
function stringToRawPath(d) {
var a = (d + "").replace(_scientific, function (m) {
var n = +m;
return n < 0.0001 && n > -0.0001 ? 0 : n;
}).match(_svgPathExp) || [],
path = [],
relativeX = 0,
relativeY = 0,
twoThirds = 2 / 3,
elements = a.length,
points = 0,
errorMessage = "ERROR: malformed path: " + d,
i,
j,
x,
y,
command,
isRelative,
segment,
startX,
startY,
difX,
difY,
beziers,
prevCommand,
flag1,
flag2,
line = function line(sx, sy, ex, ey) {
difX = (ex - sx) / 3;
difY = (ey - sy) / 3;
segment.push(sx + difX, sy + difY, ex - difX, ey - difY, ex, ey);
};
if (!d || !isNaN(a[0]) || isNaN(a[1])) {
console.log(errorMessage);
return path;
}
for (i = 0; i < elements; i++) {
prevCommand = command;
if (isNaN(a[i])) {
command = a[i].toUpperCase();
isRelative = command !== a[i];
} else {
i--;
}
x = +a[i + 1];
y = +a[i + 2];
if (isRelative) {
x += relativeX;
y += relativeY;
}
if (!i) {
startX = x;
startY = y;
}
if (command === "M") {
if (segment) {
if (segment.length < 8) {
path.length -= 1;
} else {
points += segment.length;
}
}
relativeX = startX = x;
relativeY = startY = y;
segment = [x, y];
path.push(segment);
i += 2;
command = "L";
} else if (command === "C") {
if (!segment) {
segment = [0, 0];
}
if (!isRelative) {
relativeX = relativeY = 0;
}
segment.push(x, y, relativeX + a[i + 3] * 1, relativeY + a[i + 4] * 1, relativeX += a[i + 5] * 1, relativeY += a[i + 6] * 1);
i += 6;
} else if (command === "S") {
difX = relativeX;
difY = relativeY;
if (prevCommand === "C" || prevCommand === "S") {
difX += relativeX - segment[segment.length - 4];
difY += relativeY - segment[segment.length - 3];
}
if (!isRelative) {
relativeX = relativeY = 0;
}
segment.push(difX, difY, x, y, relativeX += a[i + 3] * 1, relativeY += a[i + 4] * 1);
i += 4;
} else if (command === "Q") {
difX = relativeX + (x - relativeX) * twoThirds;
difY = relativeY + (y - relativeY) * twoThirds;
if (!isRelative) {
relativeX = relativeY = 0;
}
relativeX += a[i + 3] * 1;
relativeY += a[i + 4] * 1;
segment.push(difX, difY, relativeX + (x - relativeX) * twoThirds, relativeY + (y - relativeY) * twoThirds, relativeX, relativeY);
i += 4;
} else if (command === "T") {
difX = relativeX - segment[segment.length - 4];
difY = relativeY - segment[segment.length - 3];
segment.push(relativeX + difX, relativeY + difY, x + (relativeX + difX * 1.5 - x) * twoThirds, y + (relativeY + difY * 1.5 - y) * twoThirds, relativeX = x, relativeY = y);
i += 2;
} else if (command === "H") {
line(relativeX, relativeY, relativeX = x, relativeY);
i += 1;
} else if (command === "V") {
line(relativeX, relativeY, relativeX, relativeY = x + (isRelative ? relativeY - relativeX : 0));
i += 1;
} else if (command === "L" || command === "Z") {
if (command === "Z") {
x = startX;
y = startY;
segment.closed = true;
}
if (command === "L" || _abs(relativeX - x) > 0.5 || _abs(relativeY - y) > 0.5) {
line(relativeX, relativeY, x, y);
if (command === "L") {
i += 2;
}
}
relativeX = x;
relativeY = y;
} else if (command === "A") {
flag1 = a[i + 4];
flag2 = a[i + 5];
difX = a[i + 6];
difY = a[i + 7];
j = 7;
if (flag1.length > 1) {
if (flag1.length < 3) {
difY = difX;
difX = flag2;
j--;
} else {
difY = flag2;
difX = flag1.substr(2);
j -= 2;
}
flag2 = flag1.charAt(1);
flag1 = flag1.charAt(0);
}
beziers = arcToSegment(relativeX, relativeY, +a[i + 1], +a[i + 2], +a[i + 3], +flag1, +flag2, (isRelative ? relativeX : 0) + difX * 1, (isRelative ? relativeY : 0) + difY * 1);
i += j;
if (beziers) {
for (j = 0; j < beziers.length; j++) {
segment.push(beziers[j]);
}
}
relativeX = segment[segment.length - 2];
relativeY = segment[segment.length - 1];
} else {
console.log(errorMessage);
}
}
i = segment.length;
if (i < 6) {
path.pop();
i = 0;
} else if (segment[0] === segment[i - 2] && segment[1] === segment[i - 1]) {
segment.closed = true;
}
path.totalPoints = points + i;
return path;
}
function flatPointsToSegment(points, curviness) {
if (curviness === void 0) {
curviness = 1;
}
var x = points[0],
y = 0,
segment = [x, y],
i = 2;
for (; i < points.length; i += 2) {
segment.push(x, y, points[i], y = (points[i] - x) * curviness / 2, x = points[i], -y);
}
return segment;
}
function pointsToSegment(points, curviness) {
_abs(points[0] - points[2]) < 1e-4 && _abs(points[1] - points[3]) < 1e-4 && (points = points.slice(2));
var l = points.length - 2,
x = +points[0],
y = +points[1],
nextX = +points[2],
nextY = +points[3],
segment = [x, y, x, y],
dx2 = nextX - x,
dy2 = nextY - y,
closed = Math.abs(points[l] - x) < 0.001 && Math.abs(points[l + 1] - y) < 0.001,