3D Modeling or 3D Designing is a process of creating a computer graphic with the 3Dimentional surface, with the help of some special 3D modeling software.
The basic difference between a 2Dimentional design and a 3Dimentional design is the difference in their axis.
2Dimentional modeling computer graphic is designed using only two axes those are:
- The X-axis
- The Y-axis
The designed graphic is created by keeping in mind the X & Y axis only.
3Dimentional modeling computer graphic is designed using three-axis those are:
- The X-axis
- The Y-axis
- The Z-axis
The designed graphic is created keeping in mind the X, Y and Z axis
In this article, we are going to discuss the most common techniques which are used in the 3D designing process.
- Polygonal Modeling or Box Modeling Technique: – In the technique, the objects are designed using some basic polygonal shapes like (cube, sphere, cylinder, etc.). The basic shape is refined so that the desired model design could be obtained. The shape is generally a low-resolution mesh. The model is created by subdividing the basic mesh and then defining the shape by tweaking the vertexes and edges of the model.
- Contour Modeling technique: – This type of modeling basically consists of a process of combining of various models together to form one shape. The technique is used basically in places where the modeling is very complex. like for example. model of a human face, car model, interior or exterior and much more…
This technique may sound a bit complex but is used widely in the modeling process.
- Nurbs Technique: – NURBS is a modeling technique used mostly for industrial modeling. NURBS mesh has no faces, edges, or vertices. Instead, NURBS models are comprised of smoothly interpreted surfaces, created by a method called as “lofting” a mesh between two or more curves.NURBS curves are created with a tool that works very similarly to the pen tool in Adobe Photoshop. The curve is drawn in 3D space and edited by moving a series of handles called control vertices. To model a NURBS surface, the artist places curves along prominent contours, and the software automatically interpolates the space between.
Alternately, a NURBS surface can be created by revolving a profile curve around a central axis. This is a common modeling technique for objects that are radial in nature—wine glasses, vases, plates, etc.
These are the common technique used for 3D modeling and the software used to design these models is Autodesk Maya.