Scalling drawing with transformBy

[natuanmdc]

Hi everyone

I'm trying to scalling my drawing which combined by 2D entities et 3D entities (3d points), if i use command

acEnt.TransformBy(Matrix3d.Scaling(param_k,Point3d.Origin));

it will change the Z valeur of these 3D entities.

Do you have a solution for this problem please?

Thanks a lots

[Alexander.Rivilis]

In order to preserve Z-coordinate you have to move entity after scaling.

Other way is pass instead of Point3d.Origin other point, which will not affected with scaling.

[natuanmdc]

Thank you for your answer but when the drawing was changed the scale of Z with the factor, there is no constant to move the drawing to the Z origin value.