All about Rendering

Rendering is a process during which a photorealistic 2d image is obtained, made from a model or other data, for example, a description of the geometric data of objects, the position of the observer’s point, a description of lighting, etc. (from the English rendering – “visualization”).  All actions are carried out with the help of special computer programs and specialists 3d product modeling services by 3Nitro.

Rendering has found its application in many areas:

– film industry;

– animation;

– video games;

– advertising;

– Interior design;

– jewelry design;

– creation of furniture catalogs;

– repair and construction of houses;

– cartography;

– industry and military production (creation of parts, frames and various structures), etc.

The use of this technology made it possible to significantly reduce time and labor resources when creating design projects.  To minimize the risks of getting a bad result, since the programs allow you to see in advance a realistic view of the future product.  Thanks to this, the best design solutions and execution options are selected, as well as significant cost savings are obtained, since there is no need to redo the finished product, live, because all the alterations have already been made virtually, at no extra cost.

How does this happen

Most often, a polygonal model is built, everyone has seen a similar model in the form of a mesh.  All surfaces in this model are represented by two-dimensional primitives – triangles, quadrangles, etc.  These primitives are called polygons.

The smaller these polygons are, the larger they are and the more realistic the model is.  But at the same time, the more polygons, the more calculations need to be made by the processor and, accordingly, more time is required for this.  Therefore, the detail of the model is a very important point, the more detail, the more polygons, the lower the performance.

There are various methods for constructing such models for complex models such as animals, people, etc.  sculpting methods are used, just like from plasticine, pulling the edge of the model, it stretches, new polygons appear, etc.

It is also possible to use surface modeling and solid modeling in various CAD / CAM systems.

Such a model carries only a mathematical model that stipulates its geometry and nothing else.  A texture is applied to these polygons to add color.  The texture is a simple drawing or photograph, which is superimposed on the model.

After applying the texture, the model looks better, but it is far from photorealistic, since real surfaces have a number of properties, such as transparency, reflectivity, etc.  Therefore, the model must be assigned materials and their properties, such as polished metal, etc.  The material is also a mathematical model that has various properties through which you can change, for example, the transparency of water.

For a more realistic rendering, it is necessary to set all materials in layers, for example, a car body has a layer of metal, primer and paint.  This is how a really cool result is achieved.

But that’s not all, for a sense of reality, you need to place the scene, position the model in the right way, adjust the lighting and the camera.  And render, calculate this picture, taking into account all the settings for the material, lighting, etc.

And in order to render at the highest level, the best idea would be to contact a specialist in 3d modeling.  And then there is no doubt that the work will be done at the highest level.