There are 3 ways to represent a model
1)Polygonal Modelling
2)Curve Modelling
3)Digital Sculpting
Polygonal Modelling
They are actually Points available in 3D space. This are called vertices. Vertices are connected by the line segment in order to form a polygonal models. This is because it is flexible and also computers is being able to render quickly
Example :3D polygonal modelling of a human face
Curves Modelling
Curve modelling are surfaces that define by curves. The weighted control points are being influenced.
"Curve types include Nonuniform rational B-spline (NURBS), Splines, Patches and geometric primitives."Quote from the paragraph.
"Curve types include Nonuniform rational B-spline (NURBS), Splines, Patches and geometric primitives."Quote from the paragraph.
Sculpting Modelling
Scuplting Modelling is something new in the industries. But 3D scuplting is popular.
There are 3 types of scuplting Displacement,volumetric and dynamic tessellation.
Displacement is most commonly used.
What are they ?
Explanation from the website:
Displacement uses a dense model (often generated by Subdivision surfaces of a polygon control mesh) and stores new locations for the vertex positions through use of a 32bit image map that stores the adjusted locations.
Volumetric which is based loosely on Voxels has similar capabilities as displacement but does not suffer from polygon stretching when there are not enough polygons in a region to achieve a deformation.
Dynamic tesselation Is similar to Voxel but divides the surface using triangulation to maintain a smooth surface and allow finer details
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