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wire up basic slicing visualization

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This commit is contained in:
Stewart Allen 2022-01-26 23:13:50 -05:00
commit 96f50d36a7
5 changed files with 52 additions and 47 deletions
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61
src/geo/slicer.js
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@ -76,7 +76,7 @@
}
if (zInc) {
for (i = zMin; i < zMax; i += zInc) {
for (i = zMin; i <= zMax; i += zInc) {
zIndexes.push(i);
}
} else {
@ -97,7 +97,7 @@
zScale = 1 / (zMax / bucketCount);
console.log({zMin, zMax, zIndexes, points, bucketCount, zScale, zSum});
// console.log({zMin, zMax, zIndexes, points, bucketCount, zScale, zSum});
if (bucketCount > 1) {
// create empty buckets
@ -127,11 +127,6 @@
// create buckets data structure
for (let i = 0; i < zIndexes.length; i++) {
let ik = zIndexes[i].toFixed(5);
// ensure no slice through horizontal lines or planes
if (zFlat[ik]) {
zIndexes[i] -= -0.001;
}
bucketZ(i, zIndexes[i]);
onupdate((i / zIndexes.length) * 0.1);
}
@ -145,13 +140,11 @@
async function sliceBuckets() {
let output = [];
let count = 0;
let opt = { ...options, zmin: zMin };
for (let bucket of buckets) {
for (let params of bucket.slices) {
output.push({
slice: sliceZ(params.z, bucket.points, options, params),
params,
options
});
let { points, slices } = bucket;
for (let params of slices) {
output.push(sliceZ(params.z, points, opt));
onupdate(0.1 + (count++ / zIndexes.length) * 0.9);
}
}
@ -244,7 +237,8 @@
function sliceZ(z, points, options = {}) {
let phash = {},
lines = [],
p1, p2, p3;
p1, p2, p3,
zmin = options.zmin;
// iterate over matching buckets for this z offset
for (let i = 0; i < points.length; ) {
@ -261,7 +255,7 @@
// one side of triangle is on the Z plane and 3rd is below
// drop lines with 3rd above because that leads to ambiguities
// with complex nested polygons on flat surface
if (where.under.length === 1) {
if (where.under.length === 1 || z === zmin) {
lines.push(makeZLine(phash, where.on[0], where.on[1], false, true));
}
} else if (where.on.length === 3) {
@ -290,14 +284,9 @@
// de-dup and group lines
lines = removeDuplicateLines(lines);
let groups = connectLines(lines, z, {
debug: options.debug,
});
let groups = connectLines(lines, z, { debug: options.debug });
let tops = polygons.nest(groups);
let data = { lines, groups, tops };
return data;
return { lines, groups };
}
/**
@ -597,24 +586,18 @@
for (let array of connect) {
if (array.delete) continue;
let first = array[0];
let last = array.peek();
let dist = first.distToSq2D(last);
if (debug) console.log({
dist: dist.round(4),
merged: array.merged || false,
array
});
if (dist <= bridge) {
// tail meets head (close)
emit(newPolygon().addPoints(array));
} else {
// tail meets head (far)
emit(newPolygon().addPoints(array)
// .setOpen()
);
if (debug) {
let first = array[0];
let last = array.peek();
let dist = first.distToSq2D(last);
console.log({
dist: dist.round(4),
merged: array.merged || false,
array
});
}
emit(newPolygon().addPoints(array));
}
if (debug) console.log({ emitted });