关于根据点的xyz坐标建曲面的问题
如果已知若干控制点的xyz坐标,可以拟合一个曲面么:)谢谢各位高手
<PRE class=Code>Sub Example_Add3DMesh()
' This example creates a 4 X 4 polygonmesh in model space.
Dim meshObj As AcadPolygonMesh
Dim mSize, nSize, count As Integer
Dim points(0 To 47) As Double
' Create the matrix of points
points(0) = 0: points(1) = 0: points(2) = 0
points(3) = 2: points(4) = 0: points(5) = 1
points(6) = 4: points(7) = 0: points(8) = 0
points(9) = 6: points(10) = 0: points(11) = 1
points(12) = 0: points(13) = 2: points(14) = 0
points(15) = 2: points(16) = 2: points(17) = 1
points(18) = 4: points(19) = 2: points(20) = 0
points(21) = 6: points(22) = 2: points(23) = 1
points(24) = 0: points(25) = 4: points(26) = 0
points(27) = 2: points(28) = 4: points(29) = 1
points(30) = 4: points(31) = 4: points(32) = 0
points(33) = 6: points(34) = 4: points(35) = 0
points(36) = 0: points(37) = 6: points(38) = 0
points(39) = 2: points(40) = 6: points(41) = 1
points(42) = 4: points(43) = 6: points(44) = 0
points(45) = 6: points(46) = 6: points(47) = 0
mSize = 4: nSize = 4
' creates a 3Dmesh in model space
Set meshObj = ThisDrawing.ModelSpace.Add3DMesh(mSize, nSize, points)
' Change the viewing direction of the viewport to better see the polygonmesh
Dim NewDirection(0 To 2) As Double
NewDirection(0) = -1: NewDirection(1) = -1: NewDirection(2) = 1
ThisDrawing.ActiveViewport.direction = NewDirection
ThisDrawing.ActiveViewport = ThisDrawing.ActiveViewport
ZoomAll
End Sub</PRE> 谢谢斑竹
我还有个问题,如果所取得点是随机,分布不是很规律,那首先要将所有点按大小排个队,再将他们一个一个输入.
还有拟合曲面有除了二次B-spline,三次B-spline,Bezier,还有别的么???
我听同学说cass有拟合曲面的功能,它用的什么的方法呢?:) 对三维方面，我也没什么研究，专业不对口，：）
看看别的大侠能不能帮你
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