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v1.6.06 - lock axis on point drag

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Azgaar 2021-03-05 17:12:09 +03:00
parent 95124e686b
commit 4a1dba33f8
2 changed files with 17 additions and 3 deletions
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18
modules/ui/measurers.js
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@ -140,6 +140,10 @@ class LinearRuler {
let circle = context.el.select(`circle:nth-child(${pointId+1})`);
const line = context.el.selectAll("polyline");
let x0 = rn(d3.event.x, 1);
let y0 = rn(d3.event.y, 1);
let axis;
d3.event.on("drag", function() {
if (edge) {
if (d3.event.dx < .1 && d3.event.dy < .1) return;
@ -150,8 +154,18 @@ class LinearRuler {
edge = false;
}
const x = rn(d3.event.x, 1);
const y = rn(d3.event.y, 1);
const shiftPressed = d3.event.sourceEvent.shiftKey;
if (shiftPressed && !axis) axis = Math.abs(d3.event.dx) > Math.abs(d3.event.dy) ? "x" : "y";
const x = axis === "y" ? x0 : rn(d3.event.x, 1);
const y = axis === "x" ? y0 : rn(d3.event.y, 1);
if (!shiftPressed) {
axis = null;
x0 = x;
y0 = y;
}
context.updatePoint(pointId, x, y);
line.attr("points", context.getPointsString());
circle.attr("cx", x).attr("cy", y);