3Dmodeling is the process of creating a 3D representation of any surface or object by manipulating polygons, edges, and vertices in simulated 3D space. 3D modeling can be achieved manually with specialized 3D production software that lets an artist create and deform polygonal surfaces or by scanning real-world objects into a set of data points that can be used to represent the object digitally.

3D modeling software allows us to design basic 3D models of characters or objects.Full-featured programs provide the tools we need to flesh out our designs with realistic details.

The world of 3D graphics is a complex field, fueling industries from gaming and film to architecture and engineering. 3D artists and designers use specific techniques and processes like 3D graphic design, rendering, visualization, and animation to bring a vision to life onscreen. But when it comes to taking those 3D images and turning them into physical objects—specifically with 3D printing—the science behind it is called 3D modeling.

With programs like Rhinoceros, Blender3D, SketchUp or ZBrush, 3D designers can create files that represent points in space, with plenty of geometry like triangles, polygons, and curves to tie the points together into a three-dimensional object. There are two main types of 3D models: computer-aided design (CAD) models, and 3D mesh models, which define the shape and surface. A CAD model can be thought of more like a set of steps for creating the object, which can be tweaked along the way without rewriting the entire file. A mesh is more a representation of how the object’s surface will look, named for its appearance that resembles mesh wrapped around an object.

3D Modeling is the process of taking a shape and molding it into a completed 3D mesh. The most typical means of creating a 3D model is to take a simple object, called a primitive, and extend or “grow” it into a shape that can be refined and detailed. Primitives can be anything from a single point (called a vertex), a two-dimensional line (an edge), a curve (a spline), to three dimensional objects (faces or polygons).`

3D City Modeling with Auto texturing