arx 自定义实体简单实例

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1. class DLLIMPEXP MyLineEx : public AcDbEntity {
4. public:
5. ACRX采用DECLARE采用MEMBERS(MyLineEx) ;
8. protected:
9. static Adesk::UInt32 kCurrentVersionNumber ;
12. private:
13. AcGePoint3d m采用ptStart;
14. AcGePoint3d m采用ptEnd;
17. public:
18. MyLineEx () ;
19. MyLineEx (const AcGePoint3d& s,const AcGePoint3d& e);
22. virtual ~MyLineEx () ;
23. //----- AcDbObject protocols
24. //- Dwg Filing protocol
27. 保存，复制
28. virtual Acad::ErrorStatus dwgOutFields (AcDbDwgFiler *pFiler) const ;
29. virtual Acad::ErrorStatus dwgInFields (AcDbDwgFiler *pFiler) ;
32. //----- AcDbEntity protocols
33. //- Graphics protocol
34. protected:
36. 显示的时候调用
37. virtual Adesk::Boolean subWorldDraw (AcGiWorldDraw *mode) ;
38. 暂时不知道
39. virtual Adesk::UInt32 subSetAttributes (AcGiDrawableTraits *traits) ;
42. 单击时候触发，显示夹点
43. virtual Acad::ErrorStatus subGetGripPoints(
44.     AcGePoint3dArray& gripPoints,
45.     AcDbIntArray&  osnapModes,
46.     AcDbIntArray&  geomIds) const;
49. 移动时候触发
50. virtual Acad::ErrorStatus subMoveGripPointsAt(const AcDbIntArray& indices,
51.                                                      const AcGeVector3d& offset);
54. 捕捉的时候
55. virtual Acad::ErrorStatus subGetOsnapPoints(
56.                                     AcDb::OsnapMode     osnapMode,
57.                                     Adesk::GsMarker     gsSelectionMark,
58.                                     const AcGePoint3d&  pickPoint,
59.                                     const AcGePoint3d&  lastPoint,
60.                                     const AcGeMatrix3d& viewXform,
61.                                     AcGePoint3dArray&   snapPoints,
62.                                     AcDbIntArray &   geomIds) const;
65. 移动，旋转
66. virtual Acad::ErrorStatus   subTransformBy(const AcGeMatrix3d& xform);
69. 暂时不知道
70. virtual Acad::ErrorStatus   subGetTransformedCopy(const AcGeMatrix3d& xform,
71.                                                    AcDbEntity*& pEnt) const;
72. } ;
73. //===========================================================================
75. MyLineEx::MyLineEx () : AcDbEntity () {
76. }
79. MyLineEx::MyLineEx(const AcGePoint3d& s,const AcGePoint3d& e)
80. {
81. m采用ptStart[X] = s[X];
82. m采用ptStart[Y] = s[Y];
83. m采用ptStart[Z] = s[Z];
86. m采用ptEnd[X] = e[X];
87. m采用ptEnd[Y] = e[Y];
88. m采用ptEnd[Z] = e[Z];
89. }
92. MyLineEx::~MyLineEx () {
93. }
96. 单击实体的时候用到，添加夹点
97. Acad::ErrorStatus MyLineEx::subGetGripPoints(
98.     AcGePoint3dArray& gripPoints,
99.     AcDbIntArray&  osnapModes,
100. AcDbIntArray&  geomIds) const
101. {
103. //acedInitGet(RSG采用NOZERO + RSG采用NONULL+RSG采用NONEG,采用T(""));
104. assertReadEnabled();
105. // TODO: implement this function.
106. AcGeVector3d vecLine = m采用ptEnd - m采用ptStart;
107. acutPrintf(采用T("\nsubGetGripPoints"));
108. gripPoints.append(m采用ptStart);
109. gripPoints.append(m采用ptEnd);
110. gripPoints.append(m采用ptStart + vecLine / 2.0);
111. gripPoints.append(m采用ptStart + vecLine / 3.0);
115. return Acad::eOk;
116. }
119. 拖动夹点的时候用到，indices为夹点数组的下标数组
120. Acad::ErrorStatus MyLineEx::subMoveGripPointsAt(const AcDbIntArray& indices,
121. const AcGeVector3d& offset)
122. {
123. assertWriteEnabled();
124. // TODO: implement this function.
125. assertReadEnabled();
128. int len = indices.length();
129. for(int i = 0;i < len; i++)
130. {
131. int k = indices[i];
134. switch(k)
135. {
136. case 0:
137. m采用ptStart += offset;
138. break;
139. case 1:
140. m采用ptEnd += offset;
141. break;
142. case 2:
143. case 3:
144. m采用ptStart += offset;
145. m采用ptEnd += offset;
146. break;
147. default:break;
148. }
149. }
153. return Acad::eOk;
154. }
157. 捕捉的时候调用，添加捕捉点（交点不是这个函数）
158. Acad::ErrorStatus MyLineEx::subGetOsnapPoints(
159.                                     AcDb::OsnapMode     osnapMode,
160.                                     Adesk::GsMarker     gsSelectionMark,
161.                                     const AcGePoint3d&  pickPoint,
162.                                     const AcGePoint3d&  lastPoint,
163.                                     const AcGeMatrix3d& viewXform,
164.                                     AcGePoint3dArray&   snapPoints,
165.                                     AcDbIntArray &   geomIds) const
166. {
167. //assertWriteEnabled();
168. // TODO: implement this function.
169. assertReadEnabled();
170. // TODO: implement this function.
171. snapPoints.append(m采用ptStart);
172. snapPoints.append(m采用ptEnd);
173. snapPoints.append(m采用ptStart + (m采用ptEnd - m采用ptStart) / 2);
174. snapPoints.append(m采用ptStart + (m采用ptEnd - m采用ptStart) / 3);
175. //snapPoints.append(m采用ptStart + (m采用ptEnd - m采用ptStart) / 4);
178. /*return Acad::eOk;*/
179. return Acad::eOk;/*AcDbEntity::getOsnapPoints(osnapMode, gsSelectionMark, pickPoint, lastPoint, viewXform, snapPoints, geomIds);*/
180. }
183. 实现移动，旋转等变换
184. Acad::ErrorStatus   MyLineEx::subTransformBy(const AcGeMatrix3d& xform)
185. {
186. assertReadEnabled();
187. assertWriteEnabled();
190. m采用ptStart.transformBy(xform);
191. m采用ptEnd.transformBy(xform);
192. //m采用center.transformBy(mat);
193. return Acad::eOk;
194. }
197. Acad::ErrorStatus MyLineEx::subGetTransformedCopy(const AcGeMatrix3d& xform,AcDbEntity*& pEnt) const
198. {
199. assertReadEnabled();
202. //AcGePoint3d ptS = m采用ptStart;
203. //AcGePoint3d ptE = m采用ptEnd;
204. //
205. //ptS.transformBy(xform);
206. //ptE.transformBy(xform);
209. //AcDbLine* ent = new AcDbLine(m采用ptStart,m采用ptEnd);
210. //assert(ent != NULL);
211. //ent->setPropertiesFrom(this);
212. //pEnt = ent;
215. acutPrintf(采用T("\naaa"));
216. //m采用ptStart.transformBy(xform);
217. //m采用ptEnd.transformBy(xform);
218. return Acad::eOk;
219. }
224. //-----------------------------------------------------------------------------
225. //----- AcDbObject protocols
226. //- Dwg Filing protocol
227. Acad::ErrorStatus MyLineEx::dwgOutFields (AcDbDwgFiler *pFiler) const {
228. assertReadEnabled () ;
229. //----- Save parent class information first.
230. Acad::ErrorStatus es =AcDbEntity::dwgOutFields (pFiler) ;
231. if ( es != Acad::eOk )
232. return (es) ;
233. //----- Object version number needs to be saved first
234. if ( (es =pFiler->writeUInt32 (MyLineEx::kCurrentVersionNumber)) != Acad::eOk )
235. return (es) ;
236. //----- Output params
237. //.....
238. 这两句加上才能复制
239. pFiler->writePoint3d(m采用ptStart);
240. pFiler->writePoint3d(m采用ptEnd);
243. return (pFiler->filerStatus ()) ;
244. }
247. Acad::ErrorStatus MyLineEx::dwgInFields (AcDbDwgFiler *pFiler) {
248. assertWriteEnabled () ;
249. //----- Read parent class information first.
250. Acad::ErrorStatus es =AcDbEntity::dwgInFields (pFiler) ;
251. if ( es != Acad::eOk )
252. return (es) ;
253. //----- Object version number needs to be read first
254. Adesk::UInt32 version =0 ;
255. if ( (es =pFiler->readUInt32 (&version)) != Acad::eOk )
256. return (es) ;
257. if ( version > MyLineEx::kCurrentVersionNumber )
258. return (Acad::eMakeMeProxy) ;
259. //- Uncomment the 2 following lines if your current object implementation cannot
260. //- support previous version of that object.
261. //if ( version < MyLineEx::kCurrentVersionNumber )
262. // return (Acad::eMakeMeProxy) ;
263. //----- Read params
264. //.....
265. 这两句加上，才能复制
266. pFiler->readPoint3d(&m采用ptStart);
267. pFiler->readPoint3d(&m采用ptEnd);
274. return (pFiler->filerStatus ()) ;
275. }
277. //-----------------------------------------------------------------------------
278. //----- AcDbEntity protocols
279. Adesk::Boolean MyLineEx::subWorldDraw (AcGiWorldDraw *mode) {
280. assertReadEnabled () ;
283. //获取虚线线型ID
284. mode->subEntityTraits().setColor(150);
287. AcGePoint3d Verts[2];
288. Verts[0]=m采用ptStart;
289. Verts[1]=m采用ptEnd;
290. mode->geometry().polyline(2,Verts);
293. return (AcDbEntity::subWorldDraw (mode)) ;
294. }

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