feat(All):Initial

2025-10-04 23:36:07 +08:00
commit 2b4e5d2668
1321 changed files with 415958 additions and 0 deletions
@@ -0,0 +1,107 @@
+
+import * as helpers from '../ParseHelpers'
+import VertexParser, { IVertexEntity } from './vertex';
+import IGeometry, { IEntity, IPoint } from './geomtry';
+import DxfArrayScanner, { IGroup } from '../DxfArrayScanner';
+
+export interface IPolylineEntity extends IEntity {
+	vertices: IVertexEntity[];
+	thickness: number;
+	shape: boolean;
+	includesCurveFitVertices: boolean;
+	includesSplineFitVertices: boolean;
+	is3dPolyline: boolean;
+	is3dPolygonMesh: boolean;
+	is3dPolygonMeshClosed: boolean;
+	isPolyfaceMesh: boolean;
+	hasContinuousLinetypePattern: boolean;
+	extrusionDirection: IPoint;
+}
+
+export default class Polyline implements IGeometry {
+	public ForEntityName = 'POLYLINE' as const;
+	public parseEntity(scanner: DxfArrayScanner, curr: IGroup) {
+		var entity = { type: curr.value, vertices: [] as IVertexEntity[] } as IPolylineEntity;
+		curr = scanner.next();
+		while (!scanner.isEOF()) {
+			if (curr.code === 0) break;
+
+			switch (curr.code) {
+				case 10: // always 0
+					break;
+				case 20: // always 0
+					break;
+				case 30: // elevation
+					break;
+				case 39: // thickness
+					entity.thickness = curr.value as number;
+					break;
+				case 40: // start width
+					break;
+				case 41: // end width
+					break;
+				case 70:
+					entity.shape = ((curr.value as number) & 1) !== 0;
+					entity.includesCurveFitVertices = ((curr.value as number) & 2) !== 0;
+					entity.includesSplineFitVertices = ((curr.value as number) & 4) !== 0;
+					entity.is3dPolyline = ((curr.value as number) & 8) !== 0;
+					entity.is3dPolygonMesh = ((curr.value as number) & 16) !== 0;
+					entity.is3dPolygonMeshClosed = ((curr.value as number) & 32) !== 0; // 32 = The polygon mesh is closed in the N direction
+					entity.isPolyfaceMesh = ((curr.value as number) & 64) !== 0;
+					entity.hasContinuousLinetypePattern = ((curr.value as number) & 128) !== 0;
+					break;
+				case 71: // Polygon mesh M vertex count
+					break;
+				case 72: // Polygon mesh N vertex count
+					break;
+				case 73: // Smooth surface M density
+					break;
+				case 74: // Smooth surface N density
+					break;
+				case 75: // Curves and smooth surface type
+					break;
+				case 210:
+					entity.extrusionDirection = helpers.parsePoint(scanner);
+					break;
+				default:
+					helpers.checkCommonEntityProperties(entity, curr, scanner);
+					break;
+			}
+			curr = scanner.next();
+		}
+
+		entity.vertices = parsePolylineVertices(scanner, curr);
+
+		return entity;
+	}
+}
+
+function parsePolylineVertices(scanner:DxfArrayScanner, curr:IGroup) {
+	const vertexParser = new VertexParser();
+
+	const vertices: IVertexEntity[] = [];
+	while (!scanner.isEOF()) {
+		if (curr.code === 0) {
+			if (curr.value === 'VERTEX') {
+				vertices.push(vertexParser.parseEntity(scanner, curr));
+				curr = scanner.lastReadGroup as IGroup;
+			} else if (curr.value === 'SEQEND') {
+				parseSeqEnd(scanner, curr);
+				break;
+			}
+		}
+	}
+	return vertices;
+}
+
+function parseSeqEnd(scanner:DxfArrayScanner, curr: IGroup) {
+	const entity = { type: curr.value } as IEntity;
+	curr = scanner.next();
+	while (!scanner.isEOF()) {
+		if (curr.code == 0) break;
+		helpers.checkCommonEntityProperties(entity, curr, scanner);
+		curr = scanner.next();
+	}
+
+	return entity;
+};