viewof arrowTransformY = Inputs.range([-20, 20], {
value: 5,
step: 1,
label: "Arrow Y"
})
[...Array(linksCount).keys()]
svgE = svg`<svg width=700 height=200 xmlns="http://www.w3.org/2000/svg">
<defs>
<marker id="arrow" markerWidth="500" markerHeight="500" orient="auto" >
<path transform="translate(${
(0, arrowTransformY)
})" fill="red" d="M0,-5L10,0L0,5" />
</marker>
</defs>
<path d="M30,30 200,120 240,50" fill="none" stroke="black"
marker-mid="url(#arrow)"
/>
</svg>`
mutable debug = 1
function linkGroupArc({ source, target, count, lineIndex }) {
if (source == target) {
var x = source.x;
var y = source.y;
var r = source.r - intervalPadding + 10;
var alpha = Math.PI / 3;
if (lineIndex) {
alpha -= 0.1 * lineIndex;
}
var dx = Math.cos(alpha) * r;
var dy = Math.sin(alpha) * r;
var dx1 = x - dx;
var dx2 = x + dx;
var dy1 = y - dy;
var dy2 = y - dy;
var dr = (20 * 10) / r;
if (lineIndex) {
dr += 5 * lineIndex;
}
return `M ${dx1}, ${dy1} A ${dr}, ${dr} 0 1 1 ${dx2}, ${dy2}`;
}
var x1 = source.x;
var y1 = source.y;
var r1 = source.r - intervalPadding + 10;
var x2 = target.x;
var y2 = target.y;
var r2 = target.r - intervalPadding + 10;
var dx = x2 - x1;
var dy = y2 - y1;
var dr = Math.sqrt(dx * dx + dy * dy);
/** Control point */
var mx = x1 + dx / 2;
var my = y1 + dy / 2;
var d = (50 * dr) / 500;
var inc = (50 * dr) / 500;
if (lineIndex) {
d += inc * Math.floor((lineIndex + 1) / 2);
} else {
d += inc * Math.round((lineIndex + 1) / 2);
if (count % 2) {
d = 1;
} else {
d = -inc * Math.round((lineIndex + 1) / 2);
}
}
if ((!dx && lineIndex % 2) || (!dy && (lineIndex + 1) % 2)) {
d = -d;
}
mutable debug = { dx, dy, d };
var cx = 0;
var cy = 0;
var b = 0;
var m = dy / dx;
if (dx == 0) {
cx = mx + d;
cy = my;
} else if (dy == 0) {
cx = mx;
cy = my - d;
} else {
if (lineIndex % 2) {
cx = mx + Math.sqrt(Math.pow(d, 2) / (1 + 1 / Math.pow(m, 2)));
} else {
cx = mx - Math.sqrt(Math.pow(d, 2) / (1 + 1 / Math.pow(m, 2)));
}
/*
if (x1 > x2) {
cx = mx + Math.sqrt(Math.pow(d, 2) / (1 + 1 / Math.pow(m, 2)));
} else {
cx = mx - Math.sqrt(Math.pow(d, 2) / (1 + 1 / Math.pow(m, 2)));
}
*/
b = my - (-1 / m) * mx;
cy = (-1 / m) * cx + b;
}
var m1 = (cy - y1) / (cx - x1);
var d1 = y1 - m1 * x1;
var sita1 =
Math.pow(r1, 2) * (1 + Math.pow(m1, 2)) - Math.pow(y1 - m1 * x1 - d1, 2);
var x11 = (x1 + y1 * m1 - d1 * m1 + Math.sqrt(sita1)) / (1 + Math.pow(m1, 2));
var y11 =
(d1 + x1 * m1 + y1 * Math.pow(m1, 2) + m1 * Math.sqrt(sita1)) /
(1 + Math.pow(m1, 2));
if (!((x11 > cx && x11 < x1) || (x11 > x1 && x11 < cx))) {
x11 = (x1 + y1 * m1 - d1 * m1 - Math.sqrt(sita1)) / (1 + Math.pow(m1, 2));
y11 =
(d1 + x1 * m1 + y1 * Math.pow(m1, 2) - m1 * Math.sqrt(sita1)) /
(1 + Math.pow(m1, 2));
}
var m2 = (y2 - cy) / (x2 - cx);
var d2 = y2 - m2 * x2;
var sita2 =
Math.pow(r2, 2) * (1 + Math.pow(m2, 2)) - Math.pow(y2 - m2 * x2 - d2, 2);
var x22 = (x2 + y2 * m2 - d2 * m2 - Math.sqrt(sita2)) / (1 + Math.pow(m2, 2));
var y22 =
(d2 + x2 * m2 + y2 * Math.pow(m2, 2) - m2 * Math.sqrt(sita2)) /
(1 + Math.pow(m2, 2));
if (!((x22 > cx && x22 < x2) || (x22 > cx && x22 < x2))) {
x22 = (x2 + y2 * m2 - d2 * m2 + Math.sqrt(sita2)) / (1 + Math.pow(m2, 2));
y22 =
(d2 + x2 * m2 + y2 * Math.pow(m2, 2) + m2 * Math.sqrt(sita2)) /
(1 + Math.pow(m2, 2));
}
if (isNaN(x11)) x11 = 0;
if (isNaN(y11)) y11 = 0;
if (isNaN(cx)) cx = 0;
if (isNaN(cy)) cy = 0;
if (isNaN(x22)) x22 = 0;
if (isNaN(y22)) y22 = 0;
return `M ${x11} , ${y11} Q ${cx}, ${cy} ${x22}, ${y22}`;
}
One platform to build and deploy the best data apps
Experiment and prototype by building visualizations in live JavaScript notebooks. Collaborate with your team and decide which concepts to build out.
Use Observable Framework to build data apps locally. Use data loaders to build in any language or library, including Python, SQL, and R.
Seamlessly deploy to Observable. Test before you ship, use automatic deploy-on-commit, and ensure your projects are always up-to-date.