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add fdm scarf seams and min layer time

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This commit is contained in:
Stewart Allen 2025-09-27 21:15:21 -04:00
commit 79a227d741
8 changed files with 129 additions and 32 deletions
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42
src/kiri/mode/fdm/prepare.js
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@ -800,6 +800,8 @@ function slicePrintPath(print, slice, startPoint, offset, output, opt = {}) {
process = opt.params || settings.process,
originCenter = device.originCenter || bedRound,
extruder = parseInt(slice.extruder || 0),
scarfLength = process.outputScarfLength || 0,
minLayerTime = process.outputMinLayerTime || 0,
nozzleSize = process.sliceLineWidth || device.extruders[extruder].extNozzle,
firstLayer = (opt.first || false) && !opt.support,
thinWall = nozzleSize * (opt.thinWall || 1.75),
@ -1036,8 +1038,8 @@ function slicePrintPath(print, slice, startPoint, offset, output, opt = {}) {
return false;
}
// solid infill
function outputTraces(poly, opt = {}) {
// output shell wall
function outputTraces(poly, opt = {}, traceNo = 0) {
if (!poly) return;
if (Array.isArray(poly)) {
if (opt.sort) {
@ -1070,26 +1072,28 @@ function slicePrintPath(print, slice, startPoint, offset, output, opt = {}) {
if (next) {
last = next;
polys.remove(next);
outputTraces(next, opt);
outputTraces(next, opt, traceNo++);
} else {
last = null;
}
}
} else {
outputOrderClosest(poly, function(next) {
outputTraces(next, opt);
outputTraces(next, opt, traceNo++);
}, null);
}
} else {
let finishShell = poly.depth === 0 && !firstLayer;
startPoint = print.polyPrintPath(poly, startPoint, preout, {
ccw: opt.shell && process.outputAlternating && slice.index % 2,
tool: extruder,
rate: finishShell ? finishSpeed : printSpeed,
accel: finishShell,
wipe: process.outputWipeDistance || 0,
ccw: opt.shell && process.outputAlternating && slice.index % 2,
coast: firstLayer ? 0 : coastDist,
extrude: numOrDefault(opt.extrude, shellMult),
nozzleSize,
rate: finishShell ? finishSpeed : printSpeed,
scarf: (traceNo === 0 && z - startPoint?.z > 1e-3) ? scarfLength : 0,
tool: extruder,
wipe: process.outputWipeDistance || 0,
onfirst: function(firstPoint) {
let from = seedPoint || startPoint;
if (from.distTo2D(firstPoint) > retractDist) {
@ -1570,6 +1574,28 @@ function slicePrintPath(print, slice, startPoint, offset, output, opt = {}) {
}
}
// adjust layer output speeds (by slowing them down)
// if layer print time is less than minimum (required for cooling)
if (minLayerTime) {
let lp, td = 0, tt = 0;
for (let p of preout) {
if (!p.emit) continue;
let mms = p.speed ?? 1;
let dst = lp?.distTo2D(p.point) ?? 0;
if (dst) {
tt += (dst/mms);
td += dst;
}
lp = p.point;
}
if (tt < minLayerTime) {
let fact = tt / minLayerTime;
for (let p of preout) {
if (p.emit) p.speed *= fact;
}
}
}
// offset print points
for (let i=0; i<preout.length; i++) {
preout[i].point = preout[i].point.add(offset);