How to Rotate objects like Sphere in c# ?

Dear Reader,

I want to Rotate my shapes to fix by some angles.

I have get the Surface like this :

Surface sr = obj_ref.Surface();

then for example i want to rotate it like this:

Point3d P = new Point3d(0, 0, 0);
Vector3d D = new Vector3d(10, 10, 10);

sr.Rotate(30,D,P);

doc.Objects.AddSurface(sr);

doc.Views.Redraw();

but noting happened in rotation and the Surface just duplicate.

Can you help me to rotate my shape ?

Replies to This Discussion

Permalink Reply by Pieter Segeren on October 1, 2014 at 4:09am

Hi Mohammad,
sr.Rotate(Math.Pi/6, D, P) returns a boolean. If it's a True value, then the rotation was succesfull and you can asign the rotated geometry. (30 radians seems to be wrong in your script)

Permalink Reply by Mohammad Hamidi Esfahani on October 1, 2014 at 4:15am

Dear Pieter,

Thanks for your help, I have changed the Rotate syntax to this :

bool RES = sr.Rotate((Math.PI / 6), D, P);

but still I get RES=false

how can I find what is the problem ?

Permalink Reply by Pieter Segeren on October 1, 2014 at 4:24am

In VB I do this:

If sr.Rotate(Math.Pi/6, D, P) Then
rotatedgeo = sr
End If

Permalink Reply by Mohammad Hamidi Esfahani on October 6, 2014 at 12:00am

This is my code in C#. RES == TRUE but still the shape don't rotated :((

Point3d P = new Point3d(0, 10, 20);
Point3d Prev_Point = P;
Vector3d D = new Vector3d(2.0, 0, 0);

bool RES = obj_ref.Geometry().Rotate((Math.PI / 6), D, P);

Surface sr = obj_ref.Surface();

doc.Objects.AddSurface(obj_ref.Surface());

doc.Views.Redraw();

Please HELP :(( :((

Permalink Reply by David Rutten on October 6, 2014 at 1:39am

See attached.

Attachments:

rotateonbutton.gh, 3 KB

Permalink Reply by Mohammad Hamidi Esfahani on October 6, 2014 at 1:57am

It solved.

I just change my obj_ref type, The final working code is this :

Point3d P = new Point3d(0, 0, 0);
Vector3d tetta_D = new Vector3d(0, 1, 0);
Vector3d phi_D = new Vector3d(1, 0, 0);
Brep br;
Point3d center;

br = obj_ref.Brep();
center = br.GetBoundingBox(true).Center;

RES = br.Translate(-center.X, -center.Y, -center.Z);
RES = br.Rotate(-tetta_radian, tetta_D, P);
RES = br.Rotate(-phi_radian, phi_D, P);

doc.Objects.Replace(obj_ref.ObjectId, br);
doc.Views.Redraw();

This Code move object to center and rotate it by tetta and phi inradian .

Permalink Reply by Mohammad Hamidi Esfahani on October 6, 2014 at 1:58am

It solved.

I just change my obj_ref type, The final working code is this :

Point3d P = new Point3d(0, 0, 0);
Vector3d tetta_D = new Vector3d(0, 1, 0);
Vector3d phi_D = new Vector3d(1, 0, 0);
Brep br;
Point3d center;

br = obj_ref.Brep();
center = br.GetBoundingBox(true).Center;

RES = br.Translate(-center.X, -center.Y, -center.Z);
RES = br.Rotate(-tetta_radian, tetta_D, P);
RES = br.Rotate(-phi_radian, phi_D, P);

doc.Objects.Replace(obj_ref.ObjectId, br);
doc.Views.Redraw();

This Code move object to center and rotate it by tetta and phi inradian .

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