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Screw conveyors join across the corner to diagonals (t62)

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
44r0n7
2026-10-27 12:12:44 -04:00
co-authored by Claude Opus 5.5
parent 828c71487c
commit ff9fd7b1b8
13 changed files with 250 additions and 99 deletions
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src/ui/previews.js
+9 -20
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@@ -182,27 +182,16 @@ function previewBlock(code, x, y, w, h, stroke = false, direction = -1, bx = -1,
const ctx = R.ctx;
if (code === BP_SCREW && direction >= 4) {
const joins = bx >= 0 ? diagonalScrewJoins(bx, by, direction, planned) : 0;
const points = [];
for (let end = 0; end < 2; end++) {
const join = (joins >> (end * 3)) & 7, side = end ? 1 : -1;
const d = join ? SCREW_DIRS[join - 1] : [side, side * (direction === 4 || direction === 6 ? -1 : 1)];
points.push([d[0] * w / 2, d[1] * h / 2]);
const scale = w / BS, step = SET.look === "smooth" ? 0.25 : 1;
const b = bx >= 0 ? by * BW + bx : 0, ox = (b % BW) * BS, oy = ((b / BW) | 0) * BS;
ctx.beginPath();
for (let yy = -4; yy < 8; yy += step) for (let xx = -4; xx < 8; xx += step) {
const sd = diagonalScrewShape(ox + xx + step / 2, oy + yy + step / 2, b, direction, joins);
if (sd <= 0 && (!stroke || sd > -step * 1.5)) ctx.rect(x + xx * scale, y + yy * scale, step * scale, step * scale);
}
const r = w / 2, a = points[0], b = points[1];
const al = Math.hypot(...a), bl = Math.hypot(...b);
const n0 = [a[1] / al, -a[0] / al], n1 = [-b[1] / bl, b[0] / bl];
const turn = n0[0] * n1[1] - n0[1] * n1[0], dot = n0[0] * n1[0] + n0[1] * n1[1];
ctx.save(); ctx.translate(x + w / 2, y + h / 2); ctx.beginPath();
ctx.moveTo(a[0] + n0[0] * r, a[1] + n0[1] * r);
if (turn >= 0) ctx.lineTo((n0[0] + n1[0]) * r / (1 + dot), (n0[1] + n1[1]) * r / (1 + dot));
else ctx.arc(0, 0, r, Math.atan2(n0[1], n0[0]), Math.atan2(n1[1], n1[0]), true);
ctx.lineTo(b[0] + n1[0] * r, b[1] + n1[1] * r);
ctx.lineTo(b[0] - n1[0] * r, b[1] - n1[1] * r);
if (turn <= 0) ctx.lineTo(-(n0[0] + n1[0]) * r / (1 + dot), -(n0[1] + n1[1]) * r / (1 + dot));
else ctx.arc(0, 0, r, Math.atan2(-n1[1], -n1[0]), Math.atan2(-n0[1], -n0[0]), true);
ctx.lineTo(a[0] - n0[0] * r, a[1] - n0[1] * r); ctx.closePath();
if (stroke) ctx.stroke(); else ctx.fill();
ctx.restore(); return;
if (stroke) { const fill = ctx.fillStyle; ctx.fillStyle = ctx.strokeStyle; ctx.fill(); ctx.fillStyle = fill; }
else ctx.fill();
return;
}
if (isSlopeBelt(code)) {
const b = by * BW + bx, joins = bx >= 0 ? slopeBeltConnections(bx, by, code, planned) : 0;