| 1 | import { c as constant, p as path } from "./constant-b644328d.js";
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| 2 | import { aD as halfPi, aE as epsilon, S as tau, aF as cos, aG as sin, aH as sqrt, aI as min, aJ as abs, aK as pi, aL as atan2, aM as asin, aN as acos, aO as max } from "./mermaid-4b4b971d.js";
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| 3 | function arcInnerRadius(d) {
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| 4 | return d.innerRadius;
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| 5 | }
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| 6 | function arcOuterRadius(d) {
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| 7 | return d.outerRadius;
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| 8 | }
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| 9 | function arcStartAngle(d) {
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| 10 | return d.startAngle;
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| 11 | }
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| 12 | function arcEndAngle(d) {
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| 13 | return d.endAngle;
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| 14 | }
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| 15 | function arcPadAngle(d) {
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| 16 | return d && d.padAngle;
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| 17 | }
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| 18 | function intersect(x0, y0, x1, y1, x2, y2, x3, y3) {
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| 19 | var x10 = x1 - x0, y10 = y1 - y0, x32 = x3 - x2, y32 = y3 - y2, t = y32 * x10 - x32 * y10;
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| 20 | if (t * t < epsilon)
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| 21 | return;
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| 22 | t = (x32 * (y0 - y2) - y32 * (x0 - x2)) / t;
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| 23 | return [x0 + t * x10, y0 + t * y10];
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| 24 | }
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| 25 | function cornerTangents(x0, y0, x1, y1, r1, rc, cw) {
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| 26 | var x01 = x0 - x1, y01 = y0 - y1, lo = (cw ? rc : -rc) / sqrt(x01 * x01 + y01 * y01), ox = lo * y01, oy = -lo * x01, x11 = x0 + ox, y11 = y0 + oy, x10 = x1 + ox, y10 = y1 + oy, x00 = (x11 + x10) / 2, y00 = (y11 + y10) / 2, dx = x10 - x11, dy = y10 - y11, d2 = dx * dx + dy * dy, r = r1 - rc, D = x11 * y10 - x10 * y11, d = (dy < 0 ? -1 : 1) * sqrt(max(0, r * r * d2 - D * D)), cx0 = (D * dy - dx * d) / d2, cy0 = (-D * dx - dy * d) / d2, cx1 = (D * dy + dx * d) / d2, cy1 = (-D * dx + dy * d) / d2, dx0 = cx0 - x00, dy0 = cy0 - y00, dx1 = cx1 - x00, dy1 = cy1 - y00;
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| 27 | if (dx0 * dx0 + dy0 * dy0 > dx1 * dx1 + dy1 * dy1)
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| 28 | cx0 = cx1, cy0 = cy1;
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| 29 | return {
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| 30 | cx: cx0,
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| 31 | cy: cy0,
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| 32 | x01: -ox,
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| 33 | y01: -oy,
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| 34 | x11: cx0 * (r1 / r - 1),
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| 35 | y11: cy0 * (r1 / r - 1)
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| 36 | };
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| 37 | }
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| 38 | function d3arc() {
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| 39 | var innerRadius = arcInnerRadius, outerRadius = arcOuterRadius, cornerRadius = constant(0), padRadius = null, startAngle = arcStartAngle, endAngle = arcEndAngle, padAngle = arcPadAngle, context = null;
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| 40 | function arc() {
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| 41 | var buffer, r, r0 = +innerRadius.apply(this, arguments), r1 = +outerRadius.apply(this, arguments), a0 = startAngle.apply(this, arguments) - halfPi, a1 = endAngle.apply(this, arguments) - halfPi, da = abs(a1 - a0), cw = a1 > a0;
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| 42 | if (!context)
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| 43 | context = buffer = path();
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| 44 | if (r1 < r0)
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| 45 | r = r1, r1 = r0, r0 = r;
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| 46 | if (!(r1 > epsilon))
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| 47 | context.moveTo(0, 0);
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| 48 | else if (da > tau - epsilon) {
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| 49 | context.moveTo(r1 * cos(a0), r1 * sin(a0));
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| 50 | context.arc(0, 0, r1, a0, a1, !cw);
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| 51 | if (r0 > epsilon) {
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| 52 | context.moveTo(r0 * cos(a1), r0 * sin(a1));
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| 53 | context.arc(0, 0, r0, a1, a0, cw);
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| 54 | }
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| 55 | } else {
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| 56 | var a01 = a0, a11 = a1, a00 = a0, a10 = a1, da0 = da, da1 = da, ap = padAngle.apply(this, arguments) / 2, rp = ap > epsilon && (padRadius ? +padRadius.apply(this, arguments) : sqrt(r0 * r0 + r1 * r1)), rc = min(abs(r1 - r0) / 2, +cornerRadius.apply(this, arguments)), rc0 = rc, rc1 = rc, t0, t1;
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| 57 | if (rp > epsilon) {
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| 58 | var p0 = asin(rp / r0 * sin(ap)), p1 = asin(rp / r1 * sin(ap));
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| 59 | if ((da0 -= p0 * 2) > epsilon)
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| 60 | p0 *= cw ? 1 : -1, a00 += p0, a10 -= p0;
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| 61 | else
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| 62 | da0 = 0, a00 = a10 = (a0 + a1) / 2;
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| 63 | if ((da1 -= p1 * 2) > epsilon)
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| 64 | p1 *= cw ? 1 : -1, a01 += p1, a11 -= p1;
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| 65 | else
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| 66 | da1 = 0, a01 = a11 = (a0 + a1) / 2;
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| 67 | }
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| 68 | var x01 = r1 * cos(a01), y01 = r1 * sin(a01), x10 = r0 * cos(a10), y10 = r0 * sin(a10);
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| 69 | if (rc > epsilon) {
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| 70 | var x11 = r1 * cos(a11), y11 = r1 * sin(a11), x00 = r0 * cos(a00), y00 = r0 * sin(a00), oc;
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| 71 | if (da < pi && (oc = intersect(x01, y01, x00, y00, x11, y11, x10, y10))) {
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| 72 | var ax = x01 - oc[0], ay = y01 - oc[1], bx = x11 - oc[0], by = y11 - oc[1], kc = 1 / sin(acos((ax * bx + ay * by) / (sqrt(ax * ax + ay * ay) * sqrt(bx * bx + by * by))) / 2), lc = sqrt(oc[0] * oc[0] + oc[1] * oc[1]);
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| 73 | rc0 = min(rc, (r0 - lc) / (kc - 1));
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| 74 | rc1 = min(rc, (r1 - lc) / (kc + 1));
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| 75 | }
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| 76 | }
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| 77 | if (!(da1 > epsilon))
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| 78 | context.moveTo(x01, y01);
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| 79 | else if (rc1 > epsilon) {
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| 80 | t0 = cornerTangents(x00, y00, x01, y01, r1, rc1, cw);
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| 81 | t1 = cornerTangents(x11, y11, x10, y10, r1, rc1, cw);
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| 82 | context.moveTo(t0.cx + t0.x01, t0.cy + t0.y01);
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| 83 | if (rc1 < rc)
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| 84 | context.arc(t0.cx, t0.cy, rc1, atan2(t0.y01, t0.x01), atan2(t1.y01, t1.x01), !cw);
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| 85 | else {
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| 86 | context.arc(t0.cx, t0.cy, rc1, atan2(t0.y01, t0.x01), atan2(t0.y11, t0.x11), !cw);
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| 87 | context.arc(0, 0, r1, atan2(t0.cy + t0.y11, t0.cx + t0.x11), atan2(t1.cy + t1.y11, t1.cx + t1.x11), !cw);
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| 88 | context.arc(t1.cx, t1.cy, rc1, atan2(t1.y11, t1.x11), atan2(t1.y01, t1.x01), !cw);
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| 89 | }
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| 90 | } else
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| 91 | context.moveTo(x01, y01), context.arc(0, 0, r1, a01, a11, !cw);
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| 92 | if (!(r0 > epsilon) || !(da0 > epsilon))
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| 93 | context.lineTo(x10, y10);
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| 94 | else if (rc0 > epsilon) {
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| 95 | t0 = cornerTangents(x10, y10, x11, y11, r0, -rc0, cw);
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| 96 | t1 = cornerTangents(x01, y01, x00, y00, r0, -rc0, cw);
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| 97 | context.lineTo(t0.cx + t0.x01, t0.cy + t0.y01);
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| 98 | if (rc0 < rc)
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| 99 | context.arc(t0.cx, t0.cy, rc0, atan2(t0.y01, t0.x01), atan2(t1.y01, t1.x01), !cw);
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| 100 | else {
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| 101 | context.arc(t0.cx, t0.cy, rc0, atan2(t0.y01, t0.x01), atan2(t0.y11, t0.x11), !cw);
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| 102 | context.arc(0, 0, r0, atan2(t0.cy + t0.y11, t0.cx + t0.x11), atan2(t1.cy + t1.y11, t1.cx + t1.x11), cw);
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| 103 | context.arc(t1.cx, t1.cy, rc0, atan2(t1.y11, t1.x11), atan2(t1.y01, t1.x01), !cw);
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| 104 | }
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| 105 | } else
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| 106 | context.arc(0, 0, r0, a10, a00, cw);
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| 107 | }
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| 108 | context.closePath();
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| 109 | if (buffer)
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| 110 | return context = null, buffer + "" || null;
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| 111 | }
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| 112 | arc.centroid = function() {
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| 113 | var r = (+innerRadius.apply(this, arguments) + +outerRadius.apply(this, arguments)) / 2, a = (+startAngle.apply(this, arguments) + +endAngle.apply(this, arguments)) / 2 - pi / 2;
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| 114 | return [cos(a) * r, sin(a) * r];
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| 115 | };
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| 116 | arc.innerRadius = function(_) {
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| 117 | return arguments.length ? (innerRadius = typeof _ === "function" ? _ : constant(+_), arc) : innerRadius;
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| 118 | };
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| 119 | arc.outerRadius = function(_) {
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| 120 | return arguments.length ? (outerRadius = typeof _ === "function" ? _ : constant(+_), arc) : outerRadius;
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| 121 | };
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| 122 | arc.cornerRadius = function(_) {
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| 123 | return arguments.length ? (cornerRadius = typeof _ === "function" ? _ : constant(+_), arc) : cornerRadius;
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| 124 | };
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| 125 | arc.padRadius = function(_) {
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| 126 | return arguments.length ? (padRadius = _ == null ? null : typeof _ === "function" ? _ : constant(+_), arc) : padRadius;
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| 127 | };
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| 128 | arc.startAngle = function(_) {
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| 129 | return arguments.length ? (startAngle = typeof _ === "function" ? _ : constant(+_), arc) : startAngle;
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| 130 | };
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| 131 | arc.endAngle = function(_) {
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| 132 | return arguments.length ? (endAngle = typeof _ === "function" ? _ : constant(+_), arc) : endAngle;
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| 133 | };
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| 134 | arc.padAngle = function(_) {
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| 135 | return arguments.length ? (padAngle = typeof _ === "function" ? _ : constant(+_), arc) : padAngle;
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| 136 | };
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| 137 | arc.context = function(_) {
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| 138 | return arguments.length ? (context = _ == null ? null : _, arc) : context;
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| 139 | };
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| 140 | return arc;
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| 141 | }
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| 142 | export {
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| 143 | d3arc as d
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| 144 | };
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