something unexpected while using function ReplaceNode

[LijunGu]

Hello Dr. Louise,

There is one unexpected thing when using function ReplaceNode.

ReplaceNode.JPG (43.9 KiB) Viewed 3794 times

Below is my test script:

nx=4
ny=4
sx=3.0
sy=2.0
h_warp=0.4
w_warp=2.0
h_weft=0.5
w_weft=2.5
Layer_weft=4
Layer_warp=3
rwarp=0
rbind=1
#---------------------------------------------------------------------
# modelling
#---------------------------------------------------------------------
weave = CTextileLayerToLayer(nx, ny, sy, sx, h_warp, h_weft, Layer_warp)
weave.SetWarpRatio(rwarp)
weave.SetBinderRatio(rbind)

weave.SetupLayers( Layer_warp, Layer_weft, Layer_warp)

weave.SetYYarnWidths(w_weft)
weave.SetWarpYarnWidths(w_warp)
weave.SetBinderYarnWidths(w_warp)
weave.SetBinderYarnHeights(h_warp)

# assign the z-positions to the binder yarns
P = [
[0,1,2,1], [2,1,0,1], [1,2,1,0], [1,0,1,2],
]
for i in xrange(0, nx):
offset=0
for j in range(0, ny):
weave.SetBinderPosition(j, i , P[offset])
offset=offset+1


weave.SetWarpYarnPower( 0.6)
weave.SetWeftYarnPower( 0.
weave.SetBinderYarnPower( 0.

for i in range(4):
weave.SetXYarnWidths(i, w_warp)
weave.SetXYarnHeights(i, h_warp)
weave.SetXYarnSpacings(i, sy)

for i in range(4):
weave.SetYYarnWidths(i, w_weft)
weave.SetYYarnHeights(i, h_weft)
weave.SetYYarnSpacings(i, sx)

domain = CDomainPlanes(XYZ(0,0,-2*sz),XYZ(4*sx,4*sy,5))
weave.AssignDomain(domain)

iyarn=weave.GetYarn(27)
node=iyarn.GetNode(0)
coor=node.GetPosition()
modi_z=coor.z+0.5
Newnode=CNode(XYZ(coor.x,coor.y,modi_z))
iyarn.ReplaceNode(0,Newnode)

AddTextile("test", weave)

Do you know what's going on here?

Have a nice day for you and your team!

[louisepb]

Hello,

I haven't run your script but the textiles generated by the wizard are set up to be repeated using a repeat vector. In order for the yarn to be repeated and continuous the first and last nodes in the yarn need to be generated so that they are offset by the repeat. In the example you show the x and z coordinates would be the same but the last node would have a y coordinate of y_yarn0+ y_repeat.

Hope that helps,
Louise