AI_Assistant/grid-apps-cmms
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add gpu contouring comments

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This commit is contained in:
Stewart Allen 2025-12-23 10:52:02 -05:00
commit 55f261d3be
1 changed files with 12 additions and 3 deletions
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15
src/kiri/mode/cam/topo3.js
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@ -126,9 +126,8 @@ export class Topo {
wbounds.expandByVector({ x: toolDiameter/2 + resolution, y: toolDiameter/2 + resolution, z: 0 }); wbounds.expandByVector({ x: toolDiameter/2 + resolution, y: toolDiameter/2 + resolution, z: 0 });
} }
// swap XY vertices (unswap later after polylines generated)
if (contourY) { if (contourY) {
// console.time('swap XY vertices');
// swap XY vertices
for (let i=0; i<vertices.length; i+= 3) { for (let i=0; i<vertices.length; i+= 3) {
let tmp = vertices[i+1]; let tmp = vertices[i+1];
vertices[i+1] = vertices[i+0]; vertices[i+1] = vertices[i+0];
@ -140,7 +139,6 @@ export class Topo {
ext.x = ext.y; ext.x = ext.y;
ext.y = tmp; ext.y = tmp;
}); });
// console.timeEnd('swap XY vertices');
} }
let trace = contour.trace; let trace = contour.trace;
@ -151,14 +149,17 @@ export class Topo {
let xStep = density; let xStep = density;
let yStep = Math.ceil(toolStep / resolution); let yStep = Math.ceil(toolStep / resolution);
let epsilon = 10e-4; let epsilon = 10e-4;
// load the pre-generated tool profile
await gpu.loadTool({ await gpu.loadTool({
sparseData: toolData sparseData: toolData
}); });
// rasterize the terrain to the same resolution
let terrain = await gpu.loadTerrain({ let terrain = await gpu.loadTerrain({
triangles: vertices, triangles: vertices,
boundsOverride: wbounds boundsOverride: wbounds
}); });
let { gridWidth, positions } = terrain; let { gridWidth, positions } = terrain;
// generate all scanline points passing tool over terrain
let output = await gpu.generateToolpaths({ let output = await gpu.generateToolpaths({
xStep, xStep,
yStep, yStep,
@ -179,6 +180,9 @@ export class Topo {
p.ty = ty; p.ty = ty;
return p; return p;
} }
// for each toolpath, return a point in part space coordinated
// attach to a polyline, and annotate with terrain coordinates
// so we can later dertermine if the point is on or off the part
for (let i=0; i<numScanlines; i++) { for (let i=0; i<numScanlines; i++) {
let lineStart = i * pointsPerLine; let lineStart = i * pointsPerLine;
let lineData = pathData.slice(lineStart, lineStart + pointsPerLine); let lineData = pathData.slice(lineStart, lineStart + pointsPerLine);
@ -186,9 +190,11 @@ export class Topo {
let slice = newSlice(i); let slice = newSlice(i);
let poly = newPolygon().setOpen(); let poly = newPolygon().setOpen();
let lines = [ ]; let lines = [ ];
// track z co-planar skipped points for latent emission
let skip = 0; let skip = 0;
let lp; let lp;
for (let p of points) { for (let p of points) {
// detect points where no rays intersect the part (off part)
if (inside && positions[p.ty * gridWidth + p.tx] < zBottom - epsilon) { if (inside && positions[p.ty * gridWidth + p.tx] < zBottom - epsilon) {
if (poly.length > 1) { if (poly.length > 1) {
lines.push(poly); lines.push(poly);
@ -200,6 +206,7 @@ export class Topo {
skip = 0; skip = 0;
continue; continue;
} }
// off part but we want to return zBottom (outside)
if (p.z < zBottom - epsilon) { if (p.z < zBottom - epsilon) {
lp = p; lp = p;
if (poly.length === 0) { if (poly.length === 0) {
@ -215,6 +222,7 @@ export class Topo {
continue; continue;
} }
} else if (lp && skip && poly.length === 0) { } else if (lp && skip && poly.length === 0) {
// latent/last point output
lp.z = zBottom; lp.z = zBottom;
poly.push(lp); poly.push(lp);
} }
@ -225,6 +233,7 @@ export class Topo {
if (poly.length > 1) { if (poly.length > 1) {
lines.push(poly); lines.push(poly);
} }
// fixup/swap when contouring along Y
if (contourY) { if (contourY) {
for (let poly of lines) for (let poly of lines)
for (let p of poly.points) { for (let p of poly.points) {