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Fix DXF reader dropping AcDbPolyline subclass fields (LWPOLYLINE flags/elevation) #6

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Fix DXF reader dropping AcDbPolyline subclass fields (LWPOLYLINE flags/elevation) #6

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46 changes: 46 additions & 0 deletions src/Metadata/LookupTables/Entities.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -1256,6 +1256,52 @@ export const metadataLookupEntities: readonly ClassMetadata[] = [
"dxfName": "LINE",
"dxfSubClassName": "AcDbLine"
},
{
"typeName": "LwPolyline",
"baseTypeName": "Entity",
"properties": [
{
"propertyName": "constantWidth",
"valueCodes": [
43
],
"referenceType": 0
},
{
"propertyName": "elevation",
"valueCodes": [
38
],
"referenceType": 0
},
{
"propertyName": "flags",
"valueCodes": [
70
],
"referenceType": 0
},
{
"propertyName": "normal",
"valueCodes": [
210,
220,
230
],
"referenceType": 0
},
{
"propertyName": "thickness",
"valueCodes": [
39
],
"referenceType": 0
}
],
"systemVariables": [],
"dxfName": "LWPOLYLINE",
"dxfSubClassName": "AcDbPolyline"
},
{
"typeName": "Mesh",
"baseTypeName": "Entity",
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36 changes: 36 additions & 0 deletions tests/IO/DXF/DxfReader.test.ts
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,7 @@ import { DxfReader } from '../../../src/IO/DXF/DxfReader.js';
import { ACadVersion } from '../../../src/ACadVersion.js';
import { DxfBinaryReader } from '../../../src/IO/DXF/DxfStreamReader/DxfBinaryReader.js';
import { encodeCadString, getDecoderEncodingLabel } from '../../../src/IO/TextEncoding.js';
import { LwPolyline } from '../../../src/Entities/LwPolyline.js';

const dxfAsciiFiles = getDxfAsciiFiles();
const dxfBinaryFiles = getDxfBinaryFiles();
Expand Down Expand Up @@ -122,6 +123,41 @@ describe('DxfReaderTests', () => {
expect(streamReader.find('layer-säöü')).toBe(true);
});

it('ReadLwPolylineSubclassFields', () => {
const data = createAsciiDxf([
'0', 'SECTION',
'2', 'HEADER',
'9', '$ACADVER',
'1', 'AC1015',
'0', 'ENDSEC',
'0', 'SECTION',
'2', 'ENTITIES',
'0', 'LWPOLYLINE',
'5', '1F',
'100', 'AcDbEntity',
'8', '0',
'100', 'AcDbPolyline',
'90', '2',
'70', '1',
'38', '5.0',
'39', '2.0',
'43', '0.5',
'10', '0.0', '20', '0.0',
'10', '10.0', '20', '0.0',
'0', 'ENDSEC',
'0', 'EOF',
], 'ANSI_1252');

const doc = new DxfReader(data).read();
const polyline = [...doc.entities].find(e => e instanceof LwPolyline) as LwPolyline;

expect(polyline.vertices.length).toBe(2);
expect(polyline.isClosed).toBe(true);
expect(polyline.elevation).toBe(5);
expect(polyline.thickness).toBe(2);
expect(polyline.constantWidth).toBe(0.5);
});

describe.each(dxfAsciiFiles.map(f => [f.fileName, f]))('ASCII: %s', (_name, test) => {
it('ReadHeaderAscii', () => {
const data = readFileAsUint8Array(test.path);
Expand Down