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add sliceSupportFill process parameter to optionally force aligned support infill at a fixed angle

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This commit is contained in:
Stewart Allen 2022-10-12 22:25:57 -04:00
commit 8fffc240c4
3 changed files with 58 additions and 11 deletions
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44
src/kiri-mode/fdm/slice.js
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@ -124,6 +124,13 @@ FDM.slice = function(settings, widget, onupdate, ondone) {
isThin = !isFlat && controller.lineType === "line";
offset = lineWidth / 2;
// allow overriding support fill auto angle algorithm
// also causes support fill to be aligned on start boundaries
// best with angles that are a multiple of 90 degrees
if (process.sliceSupportFill !== undefined) {
process.sliceSupportFill += 1000;
}
if (isFlat) {
Object.values(COLOR).forEach(color => {
color.flat = true;
@ -324,6 +331,7 @@ FDM.slice = function(settings, widget, onupdate, ondone) {
return onSliceDone(slices);
}).then(ondone);
// shadow used to clip supports in non-belt mode
async function doShadow(slices) {
if (widget.shadow) {
return;
@ -718,12 +726,18 @@ FDM.slice = function(settings, widget, onupdate, ondone) {
for (let top of slice.tops) {
if (!outline) {
let offset = top.shells;
fillSupportPolys(promises, offset, lineWidth, density, slice.z, isBelt);
fillSupportPolys({
promises, polys: offset, lineWidth, density, z: slice.z, isBelt,
angle: process.sliceSupportFill
});
resolve.push({top, offset});
} else {
let offset = [];
POLY.expand(top.shells || [], -lineWidth/4, slice.z, offset);
fillSupportPolys(promises, offset, lineWidth, density, slice.z, isBelt);
fillSupportPolys({
promises, polys: offset, lineWidth, density, z: slice.z, isBelt,
angle: process.sliceSupportFill
});
resolve.push({top, offset});
}
}
@ -784,7 +798,11 @@ FDM.slice = function(settings, widget, onupdate, ondone) {
profileStart("support-fill");
promises = false && isConcurrent ? [] : undefined;
forSlices(0.8, promises ? 0.88 : 0.9, slice => {
doSupportFill(promises, slice, lineWidth, supportDensity, process.sliceSupportArea, isBelt);
doSupportFill({
promises, slice, lineWidth, density: supportDensity,
minArea: process.sliceSupportArea, isBelt,
angle: process.sliceSupportFill
});
}, "support");
if (promises) {
await tracker(promises, (i, t) => {
@ -1498,7 +1516,8 @@ async function doSupport(slice, proc, shadow, opt = {}) {
}
function doSupportFill(promises, slice, linewidth, density, minArea, isBelt) {
function doSupportFill(args) {
const { promises, slice, lineWidth, density, minArea, isBelt, angle } = args;
let supports = slice.supports,
nsB = [],
nsC = [],
@ -1520,24 +1539,27 @@ function doSupportFill(promises, slice, linewidth, density, minArea, isBelt) {
}
if (supports) {
fillSupportPolys(promises, supports, linewidth, density, slice.z, isBelt);
fillSupportPolys({
promises, polys: supports, lineWidth, density, z: slice.z, isBelt, angle
});
}
// re-assign new supports back to slice
slice.supports = supports;
};
function fillSupportPolys(promises, polys, linewidth, density, z, isBelt) {
function fillSupportPolys(args) {
const { promises, polys, lineWidth, density, z, isBelt, angle } = args;
// calculate fill density
let spacing = linewidth * (1 / density);
let spacing = lineWidth * (1 / density);
polys.forEach(function (poly) {
// angle based on width/height ratio
let angle = isBelt || (poly.bounds.width() / poly.bounds.height() > 1) ? 90 : 0;
// calculate angle based on width/height ratio
let auto = isBelt || (poly.bounds.width() / poly.bounds.height() > 1) ? 90 : 0;
// inset support poly for fill lines 33% of nozzle width
let inset = POLY.offset([poly], -linewidth/3, {flat: true, z, wasm: true});
let inset = POLY.offset([poly], -lineWidth/3, {flat: true, z, wasm: true});
// do the fill
if (inset && inset.length > 0) {
doFillArea(promises, inset, angle, spacing, poly.fill = []);
doFillArea(promises, inset, angle || auto, spacing, poly.fill = []);
}
return true;
});