catiav5曲面變形初探-全文預(yù)覽
【正文】 Similarly, a point Qt is created on the curve Ct, with the same v parameter as point Qr on curve Cr . Then Qd, that is the transformation of point Q according to the wrap curve deformation, is obtained by adding: Q+vector(Qr,Qt) 曲面優(yōu)化工具命令 Wrap Curve 3D view, where: ?r1, r2 are the reference curves ?t1, t2 are the target curves ?P is a plane normal to the spine Planar view, where: ?Ir1: is the intersection between P and r1 ?Ir2: is the intersection between P and r2 ?It1: is the intersection between P and t1 ?It2: is the intersection between P and t2 8 曲面優(yōu)化工具命令 Wrap Curve 3D view, where: ?r1, r2 are the reference curves ?t1, t2 are the target curves ?P is a plane normal to the spine Planar view, where: ?Ir1: is the intersection between P and r1 ?Ir2: is the intersection between P and r2 ?It1: is the intersection between P and t1 ?It2: is the intersection between P and t2 曲線變形之原理： 首先，所有的變形都在脊線的法平面內(nèi)進(jìn)行。 曲面優(yōu)化工具命令 Wrap Curve Ref1：固定，曲率 Ref3：固定 Ref2： 無目標(biāo)曲線 無目標(biāo)曲線 6 曲面優(yōu)化工具命令 Wrap Curve ?關(guān)于脊線 ：默認(rèn)第一條參考曲線即為脊線，但脊線若過短，如小于曲面的邊界框，則系統(tǒng)會(huì)自動(dòng)延長脊線，相應(yīng)的其它配對(duì)曲線也會(huì)自動(dòng)作延長。 ?具體操作 ：選擇參考曲線后，將鼠標(biāo)移至 “ ReferenceXXX” 字樣上，右鍵彈出下拉菜單，并選擇 “ Fixed reference curve” ，同時(shí)在對(duì)話框里將自動(dòng)跳過目標(biāo)曲線的配對(duì)，直接換行進(jìn)入下一個(gè)配對(duì)的選擇，如下圖。 ?You must always select successively a reference then a target curve to define a pair. You cannot select all reference curves, then all target curves for example. ?When several pairs of curves are selected, they must be ordere
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