md`# Cannot cut polygon with MultiLine #159`
data = {
const { Segment, Multiline, Polygon, point } = Flatten;
const polygon = new Polygon([
point(20, 20),
point(60, 20),
point(60, 60),
point(20, 60)
]);
const segment = new Segment(point(20, 20), point(40, 40));
const ip1 = segment.intersect(polygon);
const ip_sorted1 = segment.sortPoints(ip1);
const segment2 = new Segment(point(40, 40), point(50, 40));
const ip2 = segment2.intersect(polygon);
const ip_sorted2 = segment2.sortPoints(ip2);
const segment3 = new Segment(point(50, 40), point(60, 60));
const ip3 = segment3.intersect(polygon);
const ip_sorted3 = segment3.sortPoints(ip3);
const multiLine = new Multiline([segment, segment2, segment3]).split([
...ip_sorted1,
...ip_sorted2,
...ip_sorted3
]);
debugger;
// const polygonParts = polygon.cut(multiLine);
return [polygon, multiLine];
}
transformed_data = {
let m = data2center(data,width,height);
let transformed_data = data.map(shape => shape.transform(m))
return transformed_data;
}
{
let p = new Flatten.Polygon([[1,1],[1,2],[2,2],[2,1],[1,1]])
p.isValid()
return p
}
stageBox = new Flatten.Box(0, 0, width, height)
height = 400
function data2center(data, width, height) {
let {matrix} = Flatten;
let box = data.reduce( (acc,shape) => acc = acc.merge(shape.box), new Flatten.Box() )
let data_width = box.xmax - box.xmin || 400;
let data_height = box.ymax - box.ymin || 400;
let k = Math.min( width / (1.1*data_width), height / (1.1*data_height) );
let tx = width/2 - k*(box.xmin + box.xmax)/2;
let ty = height/2 - k*(box.ymin + box.ymax)/2;
let m = matrix().translate(tx,ty).scale(k,k)
return m;
}
Flatten = require("@flatten-js/core")
d3 = require("d3")
// Flatten = {
// const response = await fetch(
// "https://raw.githubusercontent.com/alexbol99/flatten-js/svg_attributes/dist/main.umd.js"
// );
// const blob = await response.blob();
// return require(URL.createObjectURL(blob)).catch(() => window.flatten);
// }
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