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fix: remove adjacent lines in selection

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trafficlunar 2025-01-18 22:35:43 +00:00
parent 19663353c8
commit 4ca631d4d2
1 changed files with 24 additions and 5 deletions
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29
src/components/canvas/SelectionBox.tsx
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@ -1,3 +1,4 @@
/* eslint-disable react-hooks/exhaustive-deps */
import { useEffect, useRef } from "react";
import { useApp } from "@pixi/react";
import { DashLineShader, SmoothGraphics } from "@pixi/graphics-smooth";
@ -21,12 +22,30 @@ function SelectionBox({ selection, coords, scale, isDark }: Props) {
graphics.clear();
graphics.lineStyle({ width: 1, color: isDark ? 0xffffff : 0x000000, shader });
selection.forEach(([x, y]) => {
const rectX = x * 16 * scale;
const rectY = y * 16 * scale;
const edges = new Set<string>();
graphics.drawRect(rectX, rectY, 16 * scale, 16 * scale);
// todo: remove lines on adjacent rectangles
selection.forEach(([x, y]) => {
const top = [x, y, x + 1, y];
const bottom = [x, y + 1, x + 1, y + 1];
const left = [x, y, x, y + 1];
const right = [x + 1, y, x + 1, y + 1];
// Add edges, or remove them if they already exist (shared edges)
[top, bottom, left, right].forEach((edge) => {
const stringified = JSON.stringify(edge);
if (edges.has(stringified)) {
edges.delete(stringified); // Shared edge, remove it
} else {
edges.add(stringified); // Unique edge, add it
}
});
});
// Draw the remaining edges
edges.forEach((edge) => {
const [x1, y1, x2, y2] = JSON.parse(edge);
graphics.moveTo(x1 * 16 * scale, y1 * 16 * scale);
graphics.lineTo(x2 * 16 * scale, y2 * 16 * scale);
});
};