open-consul/ui-v2/app/helpers/svg-curve.js

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ui: Discovery Chain (#6746) * Add data layer for discovery chain (model/adapter/serializer/repo) * Add routing plus template for routing tab * Add extra deps - consul-api-double upgrade plus ngraph for graphing * Add discovery-chain and related components and helpers: 1. discovery-chain to orchestrate/view controller 2. route-card, splitter-card, resolver card to represent the 3 different node types. 3. route-match helper for easy formatting of route rules 4. dom-position to figure out where things are in order to draw lines 5. svg-curve, simple wrapper around svg's <path d=""> attribute format. 6. data-structs service. This isn't super required but we are using other data-structures provided by other third party npm modules in other yet to be merged PRs. All of these types of things will live here for easy access/injection/changability 7. Some additions to our css-var 'polyfill' for a couple of extra needed rules * Related CSS for discovery chain 1. We add a %card base component here, eventually this will go into our base folder and %stats-card will also use it for a base component. 2. New icon for failovers * ui: Discovery Chain Continued (#6939) 1. Add in the things we use for the animations 2 Use IntersectionObserver so we know when the tab is visible, otherwise the dom-position helper won't work as the dom elements don't have any display. 3. Add some base work for animations and use them a little 4. Try to detect if a resolver is a redirect. Right now this works for datacenters and namespaces, but it can't work for services and subsets - we are awaiting backend support for doing this properly. 5. Add a fake 'this service has no routes' route that says 'Default' 6. redirect icon 7. Add CSS.escape polyfill for Edge
2019-12-17 19:27:28 +00:00
import { helper } from '@ember/component/helper';
// arguments should be a list of {x: numLike, y: numLike} points
// numLike meaning they should be numbers (or numberlike strings i.e. "1" vs 1)
const curve = function() {
const args = [...arguments];
// our arguments are destination first control points last
// SVGs are control points first destination last
// we 'shift,push' to turn that around and then map
// through the values to convert it to 'x y, x y' etc
// whether the curve is cubic-bezier (C) or quadratic-bezier (Q)
// then depends on the amount of control points
// `Q|C x y, x y, x y` etc
return `${arguments.length > 2 ? `C` : `Q`} ${args
.concat(args.shift())
.map(p => Object.values(p).join(' '))
.join(',')}`;
};
const move = function(d) {
return `
M ${d.x} ${d.y}
`;
};
export default helper(function([dest], hash) {
const src = hash.src || { x: 0, y: 0 };
const type = hash.type || 'cubic';
let args = [
dest,
{
x: (src.x + dest.x) / 2,
y: src.y,
},
];
if (type === 'cubic') {
args.push({
x: args[1].x,
y: dest.y,
});
}
return `${move(src)}${curve(...args)}`;
});