extern/STL-to-OpenSCAD-Converter
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Calculating and adding bounds to the html page

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This commit is contained in:
Raf 2022-11-11 22:35:11 +01:00
parent 05cf15667b
commit 5cae3b0f93
2 changed files with 64 additions and 6 deletions
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1
index.html
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@ -50,6 +50,7 @@
<div class="percent">0%</div>
</div>
<p id="conversion"></p>
<p id="bounds"></p>
<span id="result"></span>
<div>

69
js/main.js
View File

@ -53,6 +53,12 @@ function parseBinaryResult(stl) {
br.seek(80); //Skip header
var totalTriangles = br.readUInt32(); //Read # triangles
var minx = Number.MAX_VALUE;
var miny = Number.MAX_VALUE;
var minz = Number.MAX_VALUE;
var maxx = Number.MIN_VALUE;
var maxy = Number.MIN_VALUE;
var maxz = Number.MIN_VALUE;
for (var tr = 0; tr < totalTriangles; tr++) {
try {
document.getElementById('conversion').innerText = 'In Progress - Converted ' + (++converted) + ' out of ' + totalTriangles + ' triangles!';
@ -67,9 +73,32 @@ function parseBinaryResult(stl) {
br.readFloat();
br.readFloat(); //SKIP NORMAL
//Parse every 3 subsequent floats as a vertex
var v1 = '[' + br.readFloat() + ',' + br.readFloat() + ',' + br.readFloat() + ']';
var v2 = '[' + br.readFloat() + ',' + br.readFloat() + ',' + br.readFloat() + ']';
var v3 = '[' + br.readFloat() + ',' + br.readFloat() + ',' + br.readFloat() + ']';
var x1, y1, z1;
var x2, y2, z2;
var x3, y3, z3;
x1 = br.readFloat();
y1 = br.readFloat();
z1 = br.readFloat();
x2 = br.readFloat();
y2 = br.readFloat();
z2 = br.readFloat();
x3 = br.readFloat();
y3 = br.readFloat();
z3 = br.readFloat();
minx = Math.min(minx, x1, x2, x3);
maxx = Math.max(maxx, x1, x2, x3);
miny = Math.min(miny, y1, y2, y3);
maxy = Math.max(maxy, y1, y2, y3);
minz = Math.min(minz, z1, z2, z3);
maxz = Math.max(maxz, z1, z2, z3);
var v1 = '[' + x1 + ',' + y1 + ',' + z1 + ']';
var v2 = '[' + x2 + ',' + y2 + ',' + z2 + ']';
var v3 = '[' + x3 + ',' + y3 + ',' + z3 + ']';
//every 3 vertices create a triangle.
var triangle = '[' + (vertexIndex++) + ',' + (vertexIndex++) + ',' + (vertexIndex++) + ']';
@ -87,7 +116,8 @@ function parseBinaryResult(stl) {
}
}
saveResult(vertices, triangles);
var bounds = `[${minx},${miny},${minz}], [${maxx},${maxy},${maxz}]`;
saveResult(vertices, triangles, bounds);
}
function parseAsciiResult(stl) {
@ -104,6 +134,12 @@ function parseAsciiResult(stl) {
match = objects[o].match(patt);
if (match == null) continue;
var minx = Number.MAX_VALUE;
var miny = Number.MAX_VALUE;
var minz = Number.MAX_VALUE;
var maxx = Number.MIN_VALUE;
var maxy = Number.MIN_VALUE;
var maxz = Number.MIN_VALUE;
for (var i = 0; i < match.length; i++) {
try {
document.getElementById('conversion').innerText = 'In Progress - Object ' + (o + 1) + ' out of ' + objects.length + ' Converted ' + (++converted) + ' out of ' + match.length + ' facets!';
@ -119,6 +155,25 @@ function parseAsciiResult(stl) {
break;
}
var a1, a2, a3;
a1 = parseFloat(v[1]);
a2 = parseFloat(v[4]);
a3 = parseFloat(v[7]);
minx = Math.min(minx, a1, a2, a3);
maxx = Math.max(maxx, a1, a2, a3);
a1 = parseFloat(v[2]);
a2 = parseFloat(v[5]);
a3 = parseFloat(v[8]);
miny = Math.min(miny, a1, a2, a3);
maxy = Math.max(maxy, a1, a2, a3);
a1 = parseFloat(v[3]);
a2 = parseFloat(v[6]);
a3 = parseFloat(v[9]);
minz = Math.min(minz, a1, a2, a3);
maxz = Math.max(maxz, a1, a2, a3);
var v1 = '[' + v[1] + ',' + v[2] + ',' + v[3] + ']';
var v2 = '[' + v[4] + ',' + v[5] + ',' + v[6] + ']';
var v3 = '[' + v[7] + ',' + v[8] + ',' + v[9] + ']';
@ -136,7 +191,8 @@ function parseAsciiResult(stl) {
}
}
saveResult(vertices, triangles);
var bounds = `[${minx},${miny},${minz}], [${maxx},${maxy},${maxz}]`;
saveResult(vertices, triangles, bounds);
}
}
@ -147,7 +203,7 @@ function error(err) {
}
//Input: Set of vertices and triangles, both are strings
//Makes the Download link create an OpenScad file with a polyhedron object that represents the parsed stl file
function saveResult(vertices, triangles) {
function saveResult(vertices, triangles, bounds) {
// this function groups an array 'a' in groups of 'n'
const regroup = (a, n) => [...Array(Math.ceil(a.length / n))]
.map((item, i) => a.slice(i*n, (i+1)*n));
@ -179,6 +235,7 @@ function saveResult(vertices, triangles) {
$("#download").attr("href", window.URL.createObjectURL(blob));
$("#download").attr("download", "FromSTL.scad");
document.getElementById("bounds").innerText = "Bounds: " + bounds;
document.getElementById("conversion").innerText = "Conversion complete - Click the button below to download your OpenSCAD file! Total Triangles: " + triangles.length;
document.getElementById("download").style.display = "";
}