[vtkusers] Too many actors

[Malcolm Drummond]

Hi Yi-Yu

Try vtkHedgeHog or alternately use vtkGlyph3D with vtkLineSource

HTH
Malcolm

----- Original Message -----
From: "Yi-Yu Chou" <chouyiyu at hotmail.com>
To: <vtkusers at vtk.org>
Sent: Wednesday, February 11, 2004 5:50 PM
Subject: [vtkusers] Too many actors


> Dear all,
>
> I want to use line segments to represent a 3D vector field. However, I got
> a "lagging" problem
> when displaying this vector field, if the number of line segments is huge.
> I think it's because of using too many actors. If there any better method
> to do it ? Any suggestion will be appreciated.
> Below is my code :
>
> line = []
> line_mapper = []
> line_actor = []
> for i in range(0, vf_points.num):
> line.append(vtkLineSource())
> line[i].SetPoint1(vf_points.x[i],vf_points.y[i],vf_points.z[i])
> line[i].SetPoint2(vf_points.x[i] + vf.vx[i],vf_points.y[i] +
> vf.vy[i],vf_points.z[i] + vf.vz[i])
> line_mapper.append(vtkPolyDataMapper())
> line_mapper[i].SetInput(line[i].GetOutput())
> line_actor.append(vtkActor())
> line_actor[i].SetMapper(line_mapper[i])
> tar_renderer.AddActor(line_actor[i])
>
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