如何非均匀变换？

highflybir

哪些实体支持非均匀比例矩阵变换呢？看看下面的英文：
What entities support a non-uniform scale matrix?By Gopinath Taget
AutoCAD has a number of entity types and you might wonder which entities support non-uniform scaling.
As a general rule, the AutoCAD built-in entity classes for entity types that existed before R13 (such as AcDbCircle, AcDbLine, AcDbArc, AcDb2dPolyline, etc.) require that the transformation matrix represent a uniformly scaling orthogonal transformation (if it is not, then Acad::eCannotScaleNonUniformly will be returned). Other AutoCAD built-in classes typically does not have this restrictions.
Also, here is more specific information on commonly used AutoCAD entities:

The following are entities that have a scaling restriction: (以下是有比例限制的实体)

AcDb2dPolyine, AcDb3dPolyine, AcDbDimension and derived classes, AcDbArc, AcDbCircle, AcDbBlockReference, AcDbMInsert, AcDbFace, AcDbLine, AcDbPloyline, AcDbPoint, AcDbPoint, AcDbHatch, AcDbShape, AcDbText and derived classes, AcDbTrace, AcDbViewport, AcDbRegion, AcDb3dSolid, and AcDbBody.

The entities that support non-uniform scale matrix are: (支持非等比矩阵的实体是：)
AcDbLeader, AcDbMLine, AcDbMText, AcDbOle2Frame, AcDbPloyFaceMesh, AcDbPolygonMesh, AcDbRay, AcDbXline, AcDbFcf, AcDbSolid, AcDbEllipse, AcDbSpline, AcDbImage
http://bbs.xdcad.net/thread-668319-1-1.html

这个帖子里面提到了哪些可以实现非均匀比例变换。
对于哪些不可以的该怎么办？像单行文字或者填充

cheng5276

嘿嘿，占个地盘先，恭请老大公布

namezg

这个是目前关于块的一个未知问题。

Gu_xl

对于不可以非均匀变换的对象，CAD是这样处理的，将对象变为无名块对象，然后再插入！所以我们要做非均匀比例变换，也只能采用这样的方法！

namezg

如果已知一个最终的变换矩阵.(经多次旋转.平移.不等比创缩放等操作).如何只根据最终的变换矩阵对实体进行三维变换.一直困扰我的问题.cad公司et工具里实现了就是未发布最新的源代码.