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Grasshopper 0.9.0076 2014-08-27 
感谢各位关注。新加入成员可以查看之前的消息记录。由于用户基础不一，我们要由浅入深，先讲基础操作，再讲工程实例，再到深入GHA开发，以及各种复杂算法。期间可能会穿插着来讲，可以直接回复问题，我们会尽量去解答。您觉得有用，请将此微信号分享给能用得着的朋友。(本微信号文章如有转载请注明作者和出处，如用于商业用途请联系作者） - - -------------------------------------------------------------
正在寻求国内开发GHA的同道中人，有在搞这方面代码的朋友请联系我，谢谢 QQ772671249 - - ------------------------------------------------------------- gh现版本问世出现-- 其中有很多给力的新电池： 给定一个点和一条Nurbs曲线判定出点在右边还是左边，还是在曲线上。这是一个很古老的问题，gh0.9.0076终于给出了解答 本以为是利用后台方程实现的，但是查看代码原来是通过将点closest到线上，拿此点处切向量与此点与原始点之间的向量叉乘，来看与坐标平面的z向的关系-- Select Case vectord3.IsParallelTo(plane.ZAxis, 1.5707963267948966)
Case 0
DA.SetData(0, 0) DA.SetData(1, False)
DA.SetData(2, False)
Return
Case -1
DA.SetData(0, -1)
DA.SetData(1, True)
DA.SetData(2, False)
Return
Case 1
DA.SetData(0, 1)
DA.SetData(1, False)
DA.SetData(2, True)
Exit Select
End Select
---------------------------------- 找出曲线的最高点和最低点，这个也是一个很棘手的算法。 david给出了什么样算法呢？他用一个很巧妙的方法将这个问题转换成了曲线之间最近点的问题。我们知道在sdk里面本来就有 Curve.ClosestPoints(ByVal otherCurve As Curve, ByRef pointOnThisCurve As Point3d, ByRef pointOnOtherCurve As Point3d) As Boolean 这个算法来求曲线间的最近点 Gets closest points between this and another curves. 他将Plane上下移动个距离（1/2的曲线最大外包围盒）然后得到两个plane1，plane2，然后将曲线投影到这两个plane上面得到crv1,crv2那么crv1距离原始crv的距离最近点就是最高点了，另外一个自然是最低点了。 后面我就不啰嗦了，自己去看吧
有空再研究--
Dear All,
a new version of Grasshopper is available for download from the usual location. This release contains a fair amount of bug fixes and new features. We recommend not updating immediately if you're in the middle of a project or nearing a deadline, there may be new bugs in this release.
New features: [size=1em]Added [Point Deform] component for changing the control-point locations of geometry (Transform.Morph dropdown). [size=1em]Added [Bend Morph] component for bending geometry from lines to arcs (Transform.Morph dropdown). [size=1em]Added component menu option to the [Entwine] component for grafting (instead of flattening) inputs. [size=1em]Added [Move Away From] component for moving geometry away from other geometry (Transform.Euclidean dropdown). [size=1em]Added Enable Solver UI to last chance autosave recovery window. [size=1em]Added Peak Display to the Galapagos Fitness Landscape component. [size=1em]Added Feature Display to the Galapagos Fitness Landscape component. [size=1em]Added Slope Display to the Galapagos Fitness Landscape component. [size=1em]Added Direction Display to the Galapagos Fitness Landscape component. [size=1em]Added Remap Option to the Galapagos Fitness Landscape component. [size=1em]Added contour accuracy options to Galapagos Fitness Landscape component. [size=1em]Added [Smooth Numbers] component for interpolating numbers over time (Maths.Util dropdown). [size=1em]Added [Right Trigonometry] component for solving right triangles (Maths.Trig dropdown). [size=1em]Added [Triangle Trigonometry] component for solving generic triangles (Maths.Trig dropdown). [size=1em]Added [Centroid] component for finding triangle centroids and medians (Maths.Trig dropdown). [size=1em]Added [CircumCentre] component for finding triangle circumcentres and perpendiculars (Maths.Trig dropdown). [size=1em]Added [InCentre] component for finding triangle incentres and angle bisectors (Maths.Trig dropdown). [size=1em]Added [Orthocentre] component for finding triangle orthocentres and altitudes (Maths.Trig dropdown). [size=1em]Added [Curve Side] component for determine on which side a curve a point lies (Curve.Analysis dropdown). [size=1em]Added [Plane Region] component for finding convex regions bounded by planes (Intersect.Mathematical dropdown). [size=1em]Added [Point Deform] component for modifying geometry via control-points (Transform.Morph dropdown). [size=1em]Dragging individual components/parameters will now snap to horizontal wires.
Bug fixes: [size=1em]Using MRU tiles would always open the GH file on the main canvas, this is fixed. [size=1em]Canvas redraws would not work correctly if more than one canvas was active, this is fixed. [size=1em]Instantiating components using double-click would always insert the component on the main canvas, this is fixed. [size=1em]Drag and drop did not work by default for canvas instances, this is fixed. [size=1em]Cull Vertices component would sometimes fail due to index out of range errors, this is fixed. [size=1em]The [Arc](Plane, Radius, Angle) component would sometimes result in invalid arcs, this is fixed. [size=1em]Additional changes to make Grasshopper compatible with FIPS standards. [size=1em][Surface|Line] intersection component did not correctly re-instate 'Limit First', this is fixed. [size=1em][Surface|Line] component was incorrectly nicknamed SCX (c for curve), this is fixed. [size=1em][Construct Mesh] would crash if topologically invalid faces were supplied, this is fixed. [size=1em][Quadrangulate Mesh] had erroneous tooltip texts, this is fixed. [size=1em]The [Smaller Than] component did not handle comparisons with infinities correctly, this is fixed. [size=1em]The [Larger Than] component did not handle comparisons with infinities correctly, this is fixed. [size=1em]The [Equality] component did not handle comparisons with infinities correctly, this is fixed. [size=1em]The [Ellipse] component did not correctly compute focal points for negative radii, this is fixed. [size=1em]The [Cone] component did not handle negative radii correctly, this is fixed. [size=1em]The [Cone] component sometimes crashed when the radius was zero, this is probably fixed. [size=1em]The [Sphere] component did not handle negative radii correctly, this is fixed. [size=1em]The [Sphere] component sometimes crashed when the radius was zero, this is probably fixed. [size=1em]The [Cylinder] component did not handle negative radii correctly, this is fixed. [size=1em]The [Cylinder] component sometimes crashed when the radius was zero, this is probably fixed. [size=1em]The [Brep Topology] component did not output correct EF data, this is fixed. [size=1em]Integer conversion that exceeded the 32-bit integer range would crash, this is fixed. [size=1em]Curve|Plane intersections would return duplicate results on seam intersections, this is fixed. [size=1em]Curve|Line intersections would return duplicate results on seam intersections, this is fixed. [size=1em]Expressions entered in the Generic Data parameter 'Set Multiple' menu were parsed recursively, this is fixed. [size=1em]Changes to the MRU database would not immediately affect the Canvas MRU tiles, this is fixed. [size=1em]Groups containing empty subgroups would include (0,0) in their bounds, this is fixed. [size=1em]BeforeRunScript override inserts in C# scripts did not include method brackets, this is fixed. [size=1em](Anti)parallel lines were not filtered in the Line|Line intersection component, this is fixed. [size=1em]Preview Plane Size setting was named confusingly, this is fixed. [size=1em]The [Bounds] component would output a weird domain when all numbers were nulls, this is fixed. [size=1em]Opening old GH files with Value Lists would not open with the correct item selected, this is fixed.
-- David Rutten 精彩分享：
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