SpaceMorph too slow at R7

Rhino Developer
1

Hello,

When using the SpaceMorph at R6 the process was faster than the same process at R7
I attach a command test with calls to function ClosestMeshPoint in a simple loop and the same call inside the method from SpaceMorph: MorphPoint
I attach too an example with two meshes. The process calling ato Morph can take above from 15 min.

Thanks

C# Command Test:
Test ClosestMeshPoint.cs (1.8 KB)

File 3dm with 2 meshes: test closestpoint.rar - Google Drive

2

Hi @Eliseo,

I’m not seeing a significant difference in the performance in Mesh.ClosestMeshPoint between V6 and V7.

I used this simple Python script on your file to benchmark.

import Rhino
import rhinoscriptsyntax as rs
import System

def test_closest_mesh_point():
    red_mesh_id = rs.GetObject("Select the red mesh")
    if not red_mesh_id: return
    
    red_mesh = rs.coercemesh(red_mesh_id)
    if not red_mesh: return
        
    black_mesh_id = rs.GetObject("Select the black mesh")
    if not black_mesh_id: return
        
    black_mesh = rs.coercemesh(black_mesh_id)
    if not black_mesh: return
    
    sw = System.Diagnostics.Stopwatch()
    sw.Start()
    
    for v in red_mesh.Vertices:
        mp = black_mesh.ClosestMeshPoint(v, 0.0)
        #if mp: print(mp.Point)
    
    sw.Stop()
    ts = sw.Elapsed
    et = System.String.Format("{0:00}:{1:00}:{2:00}.{3:00}", ts.Hours, ts.Minutes, ts.Seconds, ts.Milliseconds / 10)
    print('Elapsed Time: {0}'.format(et))

if __name__ == "__main__":
    test_closest_mesh_point()

What am I missing?

– Dale

3

Hi Dale,

Sorry, I sent you a wrong file. The correct one is the attached below. The amount of time is during the call to Morph,

Test ClosestMeshPoint.cs (3.7 KB)

4

Hi @Eliseo,

I’ve run your code (slightly modified) on both V6 and V7 and I’m not seeing any significant difference in performance.

Rhino 6 SR35 - Elapsed Time: 00:00:06.43
Rhino 7 SR21 - Elapsed Time: 00:00:05.32

I’ve attached the project I tested with.

Test6.zip (25.7 KB)

– Dale

5

Hi @dale

I am not using R6, my code at R7 is the same because I have not changed it, but… the Framework and RhinoCommon version are uptaded: I am using .NET Framework 4.8 and RhinoCommon 7.15.22039.13001

You are using Framework 4.5 and RhinoCommon 6.35.21222.17000

Could be this the problem?

6

Probably not. RhinoCommon is mostly just class declarations. The implementation is in core Rhino.

– Dale

7

Ok @dale

The amount of time is checking the mesh.IsValid value.

Thanks a lot