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add flat render support

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This commit is contained in:
Stewart Allen 2020-11-12 09:55:19 -05:00
commit f30e3a0288
4 changed files with 59 additions and 19 deletions
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18
src/mode/cam/topo.js
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@ -73,7 +73,7 @@
// return the touching z given topo x,y and a tool profile
function toolTipZ(x,y) {
let profile = toolOffset,
const profile = toolOffset,
sx = stepsx,
sy = stepsy,
xl = sx - 1,
@ -101,7 +101,7 @@
}
function push_point(x,y,z) {
let newP = newPoint(x,y,z);
const newP = newPoint(x,y,z);
if (lastP && lastP.z === z) {
if (curvesOnly) {
end_poly();
@ -138,27 +138,27 @@
gridy,
gridi, // index
gridv, // value
x, y, tv, ltv;
i, il, j, jl, x, y, tv, ltv;
// for each Y slice, find z grid value (x/z swapped)
for (let j=0, jl=slices.length; j<jl; j++) {
let slice = slices[j],
lines = slice.lines;
for (j=0, jl=slices.length; j<jl; j++) {
const slice = slices[j];
const lines = slice.lines;
gridy = 0;
// slices have x/z swapped
for (y = minY; y < maxY && gridy < stepsy; y += resolution) {
gridi = gridx * stepsy + gridy;
gridv = data[gridi] || 0;
// strategy using raw lines (faster slice, but more lines)
for (let i=0, il=lines.length; i<il; i++) {
let line = lines[i], p1 = line.p1, p2 = line.p2;
for (i=0, il=lines.length; i<il; i++) {
const line = lines[i], p1 = line.p1, p2 = line.p2;
if (
(p1.z > zMin || p2.z > zMin) && // one endpoint above 0
(p1.z > gridv || p2.z > gridv) && // one endpoint above gridv
((p1.y <= y && p2.y >= y) || // one endpoint left
(p2.y <= y && p1.y >= y)) // one endpoint right
) {
let dy = p1.y - p2.y,
const dy = p1.y - p2.y,
dz = p1.z - p2.z,
pct = (p1.y - y) / dy,
nz = p1.z - (dz * pct);