91 lines
2.5 KiB
JavaScript
91 lines
2.5 KiB
JavaScript
import { BinaryWriter } from '../io/binarywriter.js';
|
|
import { FileFormat } from '../io/fileutils.js';
|
|
import { TextWriter } from '../io/textwriter.js';
|
|
import { ExportedFile, ExporterBase } from './exporterbase.js';
|
|
|
|
export class ExporterStl extends ExporterBase
|
|
{
|
|
constructor ()
|
|
{
|
|
super ();
|
|
}
|
|
|
|
CanExport (format, extension)
|
|
{
|
|
return (format === FileFormat.Text || format === FileFormat.Binary) && extension === 'stl';
|
|
}
|
|
|
|
ExportContent (exporterModel, format, files, onFinish)
|
|
{
|
|
if (format === FileFormat.Text) {
|
|
this.ExportText (exporterModel, files);
|
|
} else {
|
|
this.ExportBinary (exporterModel, files);
|
|
}
|
|
onFinish ();
|
|
}
|
|
|
|
ExportText (exporterModel, files)
|
|
{
|
|
let stlFile = new ExportedFile ('model.stl');
|
|
files.push (stlFile);
|
|
|
|
let stlWriter = new TextWriter ();
|
|
stlWriter.WriteLine ('solid Model');
|
|
exporterModel.EnumerateTrianglesWithNormals ((v0, v1, v2, normal) => {
|
|
stlWriter.WriteArrayLine (['facet', 'normal', normal.x, normal.y, normal.z]);
|
|
stlWriter.Indent (1);
|
|
stlWriter.WriteLine ('outer loop');
|
|
stlWriter.Indent (1);
|
|
stlWriter.WriteArrayLine (['vertex', v0.x, v0.y, v0.z]);
|
|
stlWriter.WriteArrayLine (['vertex', v1.x, v1.y, v1.z]);
|
|
stlWriter.WriteArrayLine (['vertex', v2.x, v2.y, v2.z]);
|
|
stlWriter.Indent (-1);
|
|
stlWriter.WriteLine ('endloop');
|
|
stlWriter.Indent (-1);
|
|
stlWriter.WriteLine ('endfacet');
|
|
});
|
|
stlWriter.WriteLine ('endsolid Model');
|
|
|
|
stlFile.SetTextContent (stlWriter.GetText ());
|
|
}
|
|
|
|
ExportBinary (exporterModel, files)
|
|
{
|
|
let stlFile = new ExportedFile ('model.stl');
|
|
files.push (stlFile);
|
|
|
|
let triangleCount = exporterModel.TriangleCount ();
|
|
let headerSize = 80;
|
|
let fullByteLength = headerSize + 4 + triangleCount * 50;
|
|
let stlWriter = new BinaryWriter (fullByteLength, true);
|
|
|
|
for (let i = 0; i < headerSize; i++) {
|
|
stlWriter.WriteUnsignedCharacter8 (0);
|
|
}
|
|
|
|
stlWriter.WriteUnsignedInteger32 (triangleCount);
|
|
exporterModel.EnumerateTrianglesWithNormals ((v0, v1, v2, normal) => {
|
|
stlWriter.WriteFloat32 (normal.x);
|
|
stlWriter.WriteFloat32 (normal.y);
|
|
stlWriter.WriteFloat32 (normal.z);
|
|
|
|
stlWriter.WriteFloat32 (v0.x);
|
|
stlWriter.WriteFloat32 (v0.y);
|
|
stlWriter.WriteFloat32 (v0.z);
|
|
|
|
stlWriter.WriteFloat32 (v1.x);
|
|
stlWriter.WriteFloat32 (v1.y);
|
|
stlWriter.WriteFloat32 (v1.z);
|
|
|
|
stlWriter.WriteFloat32 (v2.x);
|
|
stlWriter.WriteFloat32 (v2.y);
|
|
stlWriter.WriteFloat32 (v2.z);
|
|
|
|
stlWriter.WriteUnsignedInteger16 (0);
|
|
});
|
|
|
|
stlFile.SetBufferContent (stlWriter.GetBuffer ());
|
|
}
|
|
}
|