AI_Assistant/grid-apps-cmms
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fix support clipping to part shadow

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This commit is contained in:
Stewart Allen 2021-01-14 21:10:59 -05:00
commit d2ba64465c
2 changed files with 31 additions and 14 deletions
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43
src/mode/fdm/slice.js
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@ -196,6 +196,21 @@
slice.solids = [];
});
// fixed supports (generated ahead of time)
const fixed = Object.values(settings.widget[widget.id].support || {});
let shadow;
if (fixed.length) {
// create shadow. TODO test if any supports set
let alltops = slices.map(slice => slice.topPolys()).flat();
shadow = POLY.union(alltops,null,0.1);
if (spro.sliceSupportExtra) {
shadow = POLY.offset(shadow, spro.sliceSupportExtra);
}
// slices[0].output()
// .setLayer('shadow', { line: 0xff0000, check: 0xff0000 })
// .addPolys(shadow);
}
// create shells and diff inner fillable areas
forSlices(0.0, 0.2, function(slice) {
let solid = (
@ -252,10 +267,8 @@
let auto = spro.sliceSupportEnable && spro.sliceSupportDensity > 0.0,
minArea = spro.sliceSupportArea;
const fixed = Object.values(settings.widget[widget.id].support || {});
forSlices(0.7, 0.8, function(slice) {
doSupport(slice, spro, auto, fixed);
doSupport(slice, spro, auto, fixed, shadow);
}, "support");
forSlices(0.8, 0.9, function(slice) {
doSupportFill(slice, nozzleSize, spro.sliceSupportDensity, minArea);
@ -845,10 +858,9 @@
* calculate external overhangs requiring support.
* this is done bottom-up except for fixed supports (manual)
*/
function doSupport(slice, proc, auto, fixed) {
function doSupport(slice, proc, auto, fixed, shadow) {
let minOffset = proc.sliceSupportOffset,
maxBridge = proc.sliceSupportSpan || 5,
expand = proc.sliceSupportExtra,
minArea = proc.supportMinArea,
pillarSize = proc.sliceSupportSize,
offset = proc.sliceSupportOffset,
@ -859,11 +871,6 @@
tops = slice.topPolys(),
trimTo = tops;
// creates outer clip offset from tops
if (expand) {
POLY.expand(tops, expand, slice.z, trimTo = []);
}
// create inner clip offset from tops
POLY.expand(tops, offset, slice.z, slice.offsets = []);
@ -953,6 +960,9 @@
// then union supports
supports = POLY.union(supports, null, true);
// clip to top polys
supports = POLY.trimTo(supports, shadow);
let depth = 0;
while (down && supports.length > 0) {
down.supports = down.supports || [];
@ -1000,7 +1010,9 @@
supports = POLY.union(supports, undefined, true);
// trim to clip offsets
if (slice.offsets) POLY.subtract(supports, slice.offsets, nsB, null, slice.z, min);
if (slice.offsets) {
POLY.subtract(supports, slice.offsets, nsB, null, slice.z, min);
}
supports = nsB;
// also trim to lower offsets, if they exist
@ -1104,7 +1116,9 @@
}
FDM.supports = function(settings, widget) {
let size = settings.process.sliceSupportSize;
let process = settings.process;
let size = process.sliceSupportSize;
let min = process.sliceSupportArea || 0.1;
let buf = new THREE.BufferGeometry();
buf.setAttribute('position', new THREE.BufferAttribute(widget.vertices, 3));
let mat = new THREE.MeshBasicMaterial();
@ -1155,6 +1169,11 @@
let a = geo.vertices[face.a];
let b = geo.vertices[face.b];
let c = geo.vertices[face.c];
// skip tiny faces
if (BASE.newPolygon().addPoints([a,b,c]).area() < min) {
skip++;
return;
}
tp(new THREE.Vector3().add(a).add(b).add(c).divideScalar(3));
tl(a,b);
tl(b,c);