fn alignUVGizmo theObj theFace =
(
---这个可以做很好的视图坐标。
---其实这个就是差乘的结果。这个在做造型的时候费城有用，
faceNormal = in coordsys theObj (getFaceNormal theObj theFace)
worldUpVector = [0,0,1]
rightVector = normalize (cross worldUpVector faceNormal)
upVector = normalize ( cross rightVector faceNormal )
theMatrix = matrix3 rightVector upVector faceNormal [0,0,0]
theMap = Uvwmap()
modPanel.addModToSelection theMap ui:on
theMap.gizmo.transform = theMatrix
)
alignUVGizmo $ 3