Rhino objects follow the camera rotation

Replies to This Discussion

Permalink Reply by 筑梦NARUTO on October 1, 2017 at 7:55am

This is my code

Attachments:

• Rotate Object.gh, 4 KB

Permalink Reply by David Rutten on October 1, 2017 at 9:27am

If you want to draw the same geometry over and over again just in different places, it makes more sense to transform the projection than the geometry. It's just way quicker.

I didn't look too deeply into your code (sorry), but I made this proof-of-concept, hopefully as simple as possible.

Attachments:

• RotateObject.gh, 12 KB

Permalink Reply by 筑梦NARUTO on October 1, 2017 at 12:21pm

Thank you very much for your advice，I solved the problem.

But now I need to create a GhObject in the current document, if not my script does not run

Permalink Reply by Chris Hanley on October 3, 2017 at 10:58am

While not a c# solution, ladybug has an orient to camera component.   I very slightly modified for our use to include the option to rotate in XYZ or XY.

import scriptcontext as sc
import Rhino as rc

cameraX = sc.doc.Views.ActiveView.ActiveViewport.CameraX
cameraY = sc.doc.Views.ActiveView.ActiveViewport.CameraY
cameraZ = rc.Geometry.Vector3d(0.0,0.0,1.0)

def main(_pts):
if _XYorXYZ == True:
oriented = rc.Geometry.Plane(_pts, cameraX, cameraZ) #2D
else:
oriented = rc.Geometry.Plane(_pts, cameraX, cameraY) #3D
return oriented

if _pts:
oriented = main(_pts)

Permalink Reply by 筑梦NARUTO on October 3, 2017 at 7:05pm

Thank you Chris Hanley. This method is perfect