3d Modeling

3D modeling is the creation, manipulation and storage of geometric objects to represent objects that are around us or the virtual objects. The process starts with 3D modeling using specialized software 3D modeling. The 3D artist develops a mathematician, wire representation of the object using specialized software. The final product is called a 3D model. The process of 3D modeling for 3D graphics is similar to sculpting. During this process of geometric data is handled and prepared manually or automatically. There are three methods for creating and representation of a 3D model. They are: polygonal 3d modeling, NURBS 3D modeling and Splines patched and 3D modeling. Polygonal 3D modeling using vertices are connected to form a polygon mesh. Because they are polygonal, curved surfaces are approximated by using many small flat surfaces. The vast majority of 3D models today are built as models polygonal texture, because they are the most flexible and faster for the computer to handle. Polygonal 3D models can be classified as high and low polygon polygonal models depending on the density of the polygon mesh. Low poly 3D models are preferred for 3D games and simulations, as they tend to require less power. NURBS Modeling 3D uses NURBS surfaces. NURBS are really smooth surfaces, rather than approaches using small flat surfaces, such as 3D modeling polygonal. They are best suited to the complex and modeling organic forms. NURBS surfaces geometrically defined by spline curves, which in turn are influenced by the control points weighted. The curve follow these points of weight control, which increases the weight of a point to throw the curve closer to that point and vice versa. Splines patches and 3D modeling depend on curved lines to define the surface visible. By using this method of modeling the 3d stage is shaping each of the objects that are subsequently used in the scene. There are a number of techniques that include: constructive solid geometry, implicit surfaces, and subdivision surfaces. The model can be performed via a dedicated 3D modeling software program or an application or component description language scene. In some cases, there is a strict distinction between these phases in these cases modeling is only part of the scene creation process. Complex materials are based on the use of particle systems. A system of particles is a mass of coordinates that have 3D points, polygons, symbols of the texture, or sprites assigned to them. The materials that are modeled using particle systems include smoke, blowing sand, clouds, aerosols and liquids. Once the 3D model is done, the artist can begin the process 3D rendering 3D visual representation for use in 2D or 3D model of an animation. Moreover, the 3D model can be used for other applications, including simulation of physical phenomena. The 3D model can also be physically 3D created by printing through rapid prototyping techniques. When printing is used in 3D, 3D object is created to connect the layers of cross sections of material. Fig.1 3D model of Lonestar International towing vehicle
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