3D Modeling Techniques PDF

3D MODEL USES AND CONCEPTS objectives 1.Define the 3D model concepts; 2.Identify 3D model uses and principles; 3.Explain the 3D model concepts; and 4.Demonstrate the 3D model concepts KEY CONCEPTS 3-dimensional modeling is the process of creating a three- dimensional object or shape using the soft...

3D MODEL USES AND CONCEPTS objectives 1.Define the 3D model concepts; 2.Identify 3D model uses and principles; 3.Explain the 3D model concepts; and 4.Demonstrate the 3D model concepts KEY CONCEPTS 3-dimensional modeling is the process of creating a three- dimensional object or shape using the software. 3D models are used to visualize, simulate, and render graphic designs in film, television, videogame, architecture, building, product development, science, and medical industries KEY CONCEPTS 2-dimensional modeling leads to the creation of two- dimensional blueprints, sketches, and plans. 2-dimensional illustrations don't include the depth dimension. 3d uses and principles FORM DETAILS SCALING It is the overall shape of the When the figure model is ready, Refer to a more realistic figure to be created. Some there is a need to understand scenario, if possible, to have a shapes are hard to sync with the levels of details. more realistic output. other shapes. Always remember that complex figures are only a combination of simple shapes 3d uses and principles ADAPTATION REUSE SURFACE QUALITY It’s the case of the survival of the To save time, reuse as much of the mesh. The mesh can be used the nature of rendering, the way fittest. In creating a 3- as a mirror or array modifier, it models the object that has a dimensional model, it has to be using Alt+D instead of Shift+D significant impact on how light non-destructive modeling which to make an instance instead of a interacts with its surface. means it has to keep things as easily changeable as possible. duplicate, or duplicating and altering an existing object instead of starting from scratch.  types of 3d modeling 1.Wireframe- an approach that aims to demonstrate the basic structure of an object via lines and transparency. In other words, a 3D model wireframe is composed of lines, edges, curves, and all that good stuff, but you don’t just see the front-facing side of the object, and also see its edges and structure from the back, lower side, etc.  types of 3d modeling 2. Surface- is only concerned with what you see from a height– the outward view of objects. These models are more elaborate than wireframes in that they have can have details, complex features, and organic shapes instead of a skeletal structure. Instead of having volume, a 3D model of a surface creates the illusion of volume.  types of 3d modeling 3. Solid- This is by far the most popular type of modeling and one that fits the needs of most designers. 3D objects created with 3D solid modeling have true volume. These objects can be rotated, modified, clumped together, and otherwise manipulated while remaining whole and solid from all angles. Usually, these models are made from a basic geometric shape (cylinder, cube, pyramid, etc.), with new features or shapes added on or subtracted depending on the type of solid modeling used. 3d modeling techniques 1.Polygonal Modeling-involves creating a 3D polygonal mesh (a patchwork of polygons – triangles or other simple digital geometric figures). Essentially, a polygon 3D model starts as a very simple shape, and details are eventually added by splitting it into many pieces and deforming their position.  3d modeling techniques 2. NURBS- When comparing polygonal modeling vs NURBS, you should understand that NURBS (Non- Uniform Rational B-splines) relies on a polygonal mesh to form a model. The mesh formation is more automated than manual, allowing the curves and surfaces to be more accurate and lifelike, beholden to an established algorithm and not the whims of a designer.  3d modeling techniques 3. CAD- CAD stands for computer-aided design, and is characterized by a major reliance on traditional geometric figures. In other words, CAD models have plenty of lines, angles, and symmetrical figures, but relatively few curves and abstract shapes. Another major difference between CAD and 3D modeling of the regular type is that CAD models often contain additional data about the object, such as materials, weight, and others in different types of CAD.