It doesn't look like you are specifying the clip planes correctly. Here is a sample script that shows how to apply a clip box to the model:
Code:
import viz
import vizact
import vizshape
viz.go()
model = viz.add('logo.ive')
expand = vizact.sizeTo([3,3,3],speed=0.5)
shrink = vizact.sizeTo([1,1,1],speed=0.5)
model.runAction(vizact.sequence(expand,shrink,viz.FOREVER))
model.runAction(vizact.spin(0,1,0,20,viz.FOREVER),pool=1)
def applyClipBox(node, center, size):
x,y,z = center
sx,sy,sz = [ v / 2.0 for v in size ]
node.clipPlane([1,0,0,x-sx],num=0)
node.clipPlane([-1,0,0,-x-sx],num=1)
node.clipPlane([0,1,0,y-sy],num=2)
node.clipPlane([0,-1,0,-y-sy],num=3)
node.clipPlane([0,0,1,z-sz],num=4)
node.clipPlane([0,0,-1,-z-sz],num=5)
BOX_CENTER = [0,2,0]
BOX_SIZE = [2,2,2]
applyClipBox(model,center=BOX_CENTER,size=BOX_SIZE)
box = vizshape.addBox(size=BOX_SIZE,pos=BOX_CENTER,color=viz.RED,lighting=False)
box.polyMode(viz.POLY_WIRE)
viz.clearcolor(viz.GRAY)
vizshape.addGrid(color=[0.2]*3)
import vizcam
vizcam.PivotNavigate(center = BOX_CENTER, distance = 10.0)