About Wire-frame model

Wire-frame model

        A wire frame model is a visual presentation of a three dimensional or physical object used in 3D computer graphics. It is created by specifying each edge of the physical object where two mathematically continuous smooth surfaces meet, or by connecting an object's constituent vertices using straight lines or curves. The object is projected onto the computer screen by drawing lines at the location of each edge.



        線框模型(wire frame model)是三維或使用3D電腦圖型的物體的一種視覺表現。它是指由物理數學上連續兩個平滑的面所組成的物體，或通過連接對象的頂點(vertices )用直線或曲線組成。這東西是指投射在計算機螢幕上所畫線的每個邊的位置。 
 
        Using a wire frame model allows visualization of the underlying design structure of a 3D model. Traditional 2-dimensional views and drawings can be created by appropriate rotation of the object and selection of hidden line removal via cutting planes.

        使用線框模型所允許的3D模型設計的可視化基本結構。傳統的2D觀察或者繪製可以通過合適的物體旋轉以及選擇經過切面的線消隱(hidden line removal)實現。

        Since wireframe renderings are relatively simple and fast to calculate, they are often used in cases where a high screen frame rate is needed (for instance, when working with a particularly complex 3D model, or in real-time systems that model exterior phenomena). When greater graphical detail is desired, surface textures can be added automatically after completion of the initial rendering of the wireframe. This allows the designer to quickly review changes or rotate the object to new desired views without long delays associated with more realistic rendering.

        由於線框渲染方法相對來說比較簡單並且計算速度很快，所以這種方法經常用於高幀速的場合，(如非常複雜的三維模型或者模擬外部現象的實時( real-time)系統)。當需要更加精細的效果時可以在完成線框繪製之後自動渲染表面紋理。這種方法允許設計人員及時審查改動以及將物體旋轉到新設計的場景，它沒有真實感渲染(rendering)所常有的較長延時。

        The wire frame format is also well suited and widely used in programming tool paths for DNC (Direct Numerical Control) machine tools

        線框模型格式也非常適合於數控機床(DNC)中的路徑編程，並且已經在那個領域得到了廣泛應用。