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fix STL export

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This commit is contained in:
Val Erastov 2022-04-04 00:51:04 -07:00
parent 83e3ca1600
commit 17e4527329
2 changed files with 38 additions and 30 deletions
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4
web/app/cad/exportPlugin.js
View file

@ -4,8 +4,8 @@ import exportTextData from 'gems/exportTextData';
export function activate(ctx) {
function toStlAsciiString() {
let meshes = ctx.services.cadRegistry.shells.map(mShell => mShell.ext.view && mShell.ext.view.mesh).filter(m => !!m);
return stlExporter(meshes);
let views = ctx.services.cadRegistry.shells.map(mShell => mShell.ext.view).filter(m => !!m);
return stlExporter(views);
}
function stlAscii() {

64
web/app/cad/stl/stlExporter.js
View file

@ -8,61 +8,69 @@ import {BufferGeometry, Geometry, Matrix3, Mesh, Vector3} from 'three';
let vector = new Vector3();
let normalMatrixWorld = new Matrix3();
export default function (objects) {
export default function (shellViews) {
let output = '';
output += 'solid exported\n';
shellViews.forEach(view => {
objects.forEach(object => {
if (!view.faceViews) {
return;
}
if (object instanceof Mesh) {
output += `solid ${view.model.id}\n`;
let geometry = object.geometry;
let matrixWorld = object.matrixWorld;
view.faceViews.forEach(faceView => {
const mesh = faceView.mesh;
if (mesh instanceof Mesh) {
if (geometry instanceof BufferGeometry) {
let geometry = mesh.geometry;
let matrixWorld = mesh.matrixWorld;
geometry = new Geometry().fromBufferGeometry(geometry);
if (geometry instanceof BufferGeometry) {
}
geometry = new Geometry().fromBufferGeometry(geometry);
if (geometry instanceof Geometry) {
}
let vertices = geometry.vertices;
let faces = geometry.faces;
if (geometry instanceof Geometry) {
normalMatrixWorld.getNormalMatrix(matrixWorld);
let vertices = geometry.vertices;
let faces = geometry.faces;
for (let i = 0, l = faces.length; i < l; i++) {
normalMatrixWorld.getNormalMatrix(matrixWorld);
let face = faces[i];
for (let i = 0, l = faces.length; i < l; i++) {
vector.copy(face.normal).applyMatrix3(normalMatrixWorld).normalize();
let face = faces[i];
output += '\tfacet normal ' + vector.x + ' ' + vector.y + ' ' + vector.z + '\n';
output += '\t\touter loop\n';
vector.copy(face.normal).applyMatrix3(normalMatrixWorld).normalize();
let indices = [face.a, face.b, face.c];
output += '\tfacet normal ' + vector.x + ' ' + vector.y + ' ' + vector.z + '\n';
output += '\t\touter loop\n';
for (let j = 0; j < 3; j++) {
let indices = [face.a, face.b, face.c];
vector.copy(vertices[indices[j]]).applyMatrix4(matrixWorld);
for (let j = 0; j < 3; j++) {
output += '\t\t\tvertex ' + vector.x + ' ' + vector.y + ' ' + vector.z + '\n';
vector.copy(vertices[indices[j]]).applyMatrix4(matrixWorld);
output += '\t\t\tvertex ' + vector.x + ' ' + vector.y + ' ' + vector.z + '\n';
}
output += '\t\tendloop\n';
output += '\tendfacet\n';
}
output += '\t\tendloop\n';
output += '\tendfacet\n';
}
}
})
}
output += `endsolid ${view.model.id}\n`;
});
output += 'endsolid exported\n';
return output;
}