feat(All):Initial

2025-10-04 23:36:07 +08:00
commit 2b4e5d2668
1321 changed files with 415958 additions and 0 deletions
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+
+import DxfArrayScanner, { IGroup } from '../DxfArrayScanner';
+import * as helpers from '../ParseHelpers'
+
+import IGeometry, { IEntity, IPoint } from './geomtry';
+
+export interface IArcEntity extends IEntity {
+	center: IPoint;
+	radius: number;
+	startAngle: number;
+	endAngle: number;
+	angleLength: number;
+	extrusionDirectionX: number;
+	extrusionDirectionY: number;
+	extrusionDirectionZ: number;
+}
+
+export default class Arc implements IGeometry {
+	public ForEntityName = 'ARC' as const;
+	public parseEntity(scanner: DxfArrayScanner, curr: IGroup) {
+		const entity = { type: curr.value } as IArcEntity;
+		curr = scanner.next();
+		while (!scanner.isEOF()) {
+			if (curr.code === 0) break;
+
+			switch (curr.code) {
+				case 10: // X coordinate of point
+					entity.center = helpers.parsePoint(scanner);
+					break;
+				case 40: // radius
+					entity.radius = curr.value as number;
+					break;
+				case 50: // start angle
+					entity.startAngle = Math.PI / 180 * (curr.value as number);
+					break;
+				case 51: // end angle
+					entity.endAngle = Math.PI / 180 * (curr.value as number);
+					entity.angleLength = entity.endAngle - entity.startAngle; // angleLength is deprecated
+					break;
+				case 210:
+					entity.extrusionDirectionX = curr.value as number;
+					break;
+				case 220:
+					entity.extrusionDirectionY = curr.value as number;
+					break;
+				case 230:
+					entity.extrusionDirectionZ = curr.value as number;
+					break;
+				default: // ignored attribute
+					helpers.checkCommonEntityProperties(entity, curr, scanner);
+					break;
+			}
+			curr = scanner.next();
+		}
+		return entity;
+	}
+}