Implicit model can be chosen like superquadrics . unfortunately , these models do not recover rough curves and surfaces 但是這些方法都只能表示光滑曲線曲面,而不能表示具有分形特征的自然界復雜曲線曲面。
Class , in which transactions are automatically managed by the infrastructure . it is highly recommended that you use the easier implicit model for development 類的隱式編程模型,在這種模型中事務是由基礎結構自動管理的。
For visualization geometrical data generated in numerical simulations , two subdivision methods are used and described in full detail . the two methods , which are triangular subdivision and quadrilateral subdivision , are incorporated into the visualization system with vtk for surface and volume rendering . the system supports a wide variety of visualization algorithms including scalar , vector , tensor , texture , and volumetric methods ; and advanced modeling techniques such as implicit modeling , polygon reduction , mesh smoothing , cutting , and contouring 針對數值計算時被計算的幾何外形,即三維空間離散的數據所確定的幾何外形需要顯示出來特性,本文詳細介紹了兩種常用的剖分技術,即三角形剖分和四邊形剖分原理、方法;將現有的、特定的可視化算法和技術與vtk類庫充分結合,設計了能讀取、存貯三角形或四邊形剖分的數據組織以及實現其幾何體繪制的類庫。