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alter belt calculations for abitrary slice angle

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This commit is contained in:
Stewart Allen 2024-07-08 13:26:58 -04:00
commit 4aa9b7ed49
4 changed files with 36 additions and 30 deletions
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42
src/kiri-mode/fdm/slice.js
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@ -18,7 +18,6 @@ const { base, kiri, noop } = root;
const { consts, driver, fill, fill_fixed, newSlice, utils } = kiri;
const { config, polygons, util, newPoint } = base;
const { fillArea } = polygons;
const { beltfact } = consts;
const { FDM } = driver;
const { doTopShells, getRangeParameters } = FDM;
@ -179,16 +178,17 @@ FDM.slice = function(settings, widget, onupdate, ondone) {
// handle z cutting (floor method) and base flattening
let zPress = isBelt ? process.firstLayerFlatten || 0 : 0;
let zCut = widget.track.zcut || 0;
let { belt } = widget;
if (zCut || zPress) {
for (let p of points) {
if (!p._z) {
p._z = p.z;
if (zPress) {
if (isBelt) {
let zb = (p.z - p.y) * beltfact;
if (zb > 0 && zb <= zPress) {
p.y += zb * beltfact;
p.z -= zb * beltfact;
let zd = (belt.slope * p.z) - p.y;
if (zd > 0 && zd <= zPress) {
p.y += zd * belt.cosf;
p.z -= zd * belt.sinf;
}
} else {
if (p.z <= zPress) p.z = 0;
@ -492,10 +492,7 @@ FDM.slice = function(settings, widget, onupdate, ondone) {
// add lead in anchor when specified in belt mode (but not for synths)
if (isBelt && !isSynth) {
let mrad = Math.cos(Math.PI/4);
let arad = Math.cos((Math.PI/180) * process.sliceAngle);
let ymlt = arad / mrad;
console.log({ arad, ymlt });
let { cosf, slope } = widget.belt;
// find adjusted zero point from slices
let smin = Infinity;
for (let slice of slices) {
@ -505,14 +502,14 @@ FDM.slice = function(settings, widget, onupdate, ondone) {
let z = slice.z;
// at 45 degrees, 1mm in Z is 1mm in Y
// find formula for other angles
let by = z - (y * ymlt);
let by = (slope * z) - y;
if (by < miny) miny = by;
if (by < smin) smin = by;
}
slice.belt = { miny, touch: false };
console.log({ miny, z:slice.z });
slice.belt = { miny, touch: miny.round(3) == 0 };
// console.log({ miny: miny.round(3), z:slice.z, touch: slice.belt.touch });
}
console.log({ smin });
console.log({ smin: smin.round(5) });
// mark slices with tops touching belt
// also find max width of first 5 layers
let start;
@ -527,10 +524,11 @@ FDM.slice = function(settings, widget, onupdate, ondone) {
}
// mark slice as touching belt if near miny
// if (Math.abs(slice.belt.miny - smin) < 0.01) {
if (Math.abs(slice.belt.miny) < 0.01) {
slice.belt.touch = true;
if (!start) start = slice;
}
if (!start && slice.belt.touch) start = slice;
// if (Math.abs(slice.belt.miny) < 0.01) {
// slice.belt.touch = true;
// if (!start) start = slice;
// }
}
// ensure we start against a layer with shells
while (start && start.up && start.topShells().length === 0) {
@ -544,11 +542,12 @@ FDM.slice = function(settings, widget, onupdate, ondone) {
}
// array of added top.fill_sparse arrays
let adds = [];
let anchorlen = (process.beltAnchor || process.firstLayerBeltLead) * beltfact;
let step = sliceHeight;
let anchorlen = (process.beltAnchor || process.firstLayerBeltLead) * cosf;
while (anchorlen && start && anchorlen >= sliceHeight) {
let addto = start.down;
if (!addto) {
addto = newSlice(start.z - sliceHeight);
addto = newSlice(start.z - step);
addto.extruder = extruder;
addto.belt = { };
addto.height = start.height;
@ -565,12 +564,13 @@ FDM.slice = function(settings, widget, onupdate, ondone) {
// by removing the forced start-point in print.js
addto.belt.touch = false;
let z = addto.z;
let y = z - smin - (lineWidth / 2);
let y = (slope * z) - smin - (lineWidth / 2);
let splat = base.newPolygon().add(minx, y, z).add(maxx, y, z).setOpen();
let snew = addto.addTop(splat).fill_sparse = [ splat ];
adds.push(snew);
start = addto;
anchorlen -= sliceHeight;
// console.log({ z: z.round(3), anchorlen: anchorlen.round(3) });
anchorlen -= (step * slope);
}
// add anchor bump
let bump = process.firstLayerBeltBump;