Autodesk Maya 2020 LT Free Download

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Autodesk Maya 2020 LT Free Download

Autodesk Maya LT features:

Modeling

Maya makes use of four different types of modeling, and each one is covered extensively in a separate section.

Topics in this section

  • Polygonal Modeling
    Polygons consist of geometry based on vertices, edges, and faces that you can use to create three-dimensional models in Maya.
  • NURBS Modeling
    Non-Uniform Rational B-Splines (NURBS) provide a 3D modeling framework based on geometric primitives and drawn curves.
  • UVs
    UVs (pronounced U-VEEZ) are two-dimensional texture coordinates that reside with the vertex component information for polygonal and subdivision surface meshes.
  • Sculpting
    In Maya you can sculpt virtual 3D surfaces like you sculpt real 3D objects from clay or other modeling materials. Instead of using clay, the virtual 3D surfaces are constructed using polygons.
  • Autodesk Maya 2020 LT Free Download

Polygonal Modeling

Polygons consist of geometry based on vertices, edges, and faces that you can use to create three-dimensional models in Maya.

Polygons are useful for constructing many types of 3D models and are widely used in the development of 3D content for animated effects in film, interactive video games, and the internet.

Autodesk Maya 2020 LT Free Download

Polygon terminology

Polygons are straight-sided shapes (3 or more sides), defined by three-dimensional points (vertices) and the straight lines that connect them (edges). The interior region of the polygon is called the face. Vertices, edges, and faces are the basic components of polygons. You select and modify polygons using these basic components.

Autodesk Maya 2020 LT Free Download

When you model with polygons you usually use three-sided polygons called triangles or four-sided polygons called quadrilaterals (quads). Maya also supports the creation of polygons with more than four sides (n-gons) but they are not as commonly used for modeling.

Autodesk Maya 2020 LT Free Download

An individual polygon is commonly called a face, and is defined as the area bounded by three or more vertices and their associated edges. When many faces are connected together they create a network of faces called a polygon mesh (also referred to as a polyset or a polygonal object). You create your 3D polygonal models using polygon meshes. Polygon meshes can be created using a variety of techniques. For more information on these techniques see Polygon modeling overview.

Autodesk Maya 2020 LT Free Download

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Polygon meshes normally share the vertices and edges that are common between the individual faces. These are referred to as shared vertices or shared edges.

Autodesk Maya 2020 LT Free Download

A polygon mesh can also be composed of several disjointed sets of connected polygons called shells. The outside edges of a mesh or shell are referred to as border edges.

Autodesk Maya 2020 LT Free Download

Texture mapping polygonal models

Polygon models are texture mapped using UV texture coordinates. For more information on texturing polygonal models see Mapping UVs.

Autodesk Maya 2020 LT Free Download

NURBS Modeling

Non-Uniform Rational B-Splines (NURBS) provide a 3D modeling framework based on geometric primitives and drawn curves.

You can use NURBS in two ways:

  • Construct 3D models from NURBS primitives.Primitives are simple 3D objects created in the shape of common geometric forms such as cubes, spheres, cones, and so on. Primitives can be a great starting point for many 3D shapes. You can modify the attributes of NURBS primitives to modify their shape. You can also modify NURBS primitives by trimming away portions of their forms, beveling their edges, or by sculpting them into different shapes using sculpting tools.
  • Construct NURBS curves that define the basic outline of the 3D form you want to construct, then use the curves as a basis for constructing NURBS surfaces.To find options for constructing and modifying NURBS curves and surfaces:
    • You can draw curves by placing control vertices, or edit points. The curve drawing tools are found in the Create menu.
    • The options for creating and editing NURBS curves and NURBS surfaces are found in the Modeling menu set.
    • You can also find NURBS options on the Curves/Surfaces shelf.
    • Autodesk Maya 2020 LT Free Download

UVs

UVs (pronounced U-VEEZ) are two-dimensional texture coordinates that reside with the vertex component information for polygonal and subdivision surface meshes.

UVs exist to define a two-dimensional texture coordinate system, called UV texture space. UV texture space uses the letters U and V to indicate the axes in 2D. UV texture space facilitates the placement of image texture maps on a 3D surface.

UVs are essential in that they provide the connection between the surface mesh and how the image texture gets mapped onto the surface mesh. That is, UVs act as marker points that control which points (pixels) on the texture map correspond to which points (vertices) on the mesh. Textures applied to polygon or subdivision surfaces that do not possess UV texture coordinates will not render.

Autodesk Maya 2020 LT Free Download

Although Maya creates UVs by default for many primitive types, you’ll need to rearrange the UVs in most cases, because the default arrangement will usually not match any subsequent edits to the model you may make. In addition, the location of the UV texture coordinates do not automatically update when you edit a surface mesh.

In most cases, you map and arrange UVs after you have completed your modeling, but before you assign textures to the model. Otherwise, changing the model will create a mismatch between the model and the UVs, and affect how any textures appear on the model.

Autodesk Maya 2020 LT Free Download

Understanding the concept of UVs and how to map them to a surface, and subsequently lay them out accurately is essential for producing textures on polygonal and subdivision surfaces when working in Maya. This is also important when you need to paint textures, fur, or hair onto a 3D model.

Note: For NURBS surface types the texture coordinates (UVs) that control the placement of a texture exist by default and are implicitly connected to the control vertices. When the control vertices get repositioned, so do the positions of the corresponding UV texture coordinates. Any textures mapped to the surface will adjust automatically.

Autodesk Maya 2020 LT Free Download

UV mapping

The process of creating explicit UVs for a surface mesh is called UV mapping. UV mapping is a process whereby you create, edit, and otherwise arrange the UVs (that appear as a flattened, two-dimensional representation of the surface mesh, over top of the two-dimensional image to be used as a texture as it appears in the UV Texture Editor.

Autodesk Maya 2020 LT Free Download

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The UV mapping process results in a correlation between the image and how it appears as a texture when mapped onto the three-dimensional surface mesh. UV mapping is a critical skill to master for accurate and realistic textures on polygonal surfaces.

  • You create UVs by mapping them onto your surface mesh. For more information see Mapping UVs.
  • You view and edit UVs using the UV Texture Editor. You can display the texture image as a background image to let you more easily correlate the UVs to the texture.
  • You use the tools in the UV Texture Editor to lay out and manipulate the 2D representation of UVs. For more information see Editing UVs.
  • Autodesk Maya 2020 LT Free Download

Sculpting

In Maya you can sculpt virtual 3D surfaces like you sculpt real 3D objects from clay or other modeling materials. Instead of using clay, the virtual 3D surfaces are constructed using polygons.

It is recommended that you use a graphics tablet in order to take full advantage of Maya’s sculpting features. However, you can still sculpt using a standard three-button mouse. For more information, see Tablet setup.

Sculpting a polygon model

You can sculpt a polygonal model with tools from the Sculpting shelf. You can also access these tools from the Mesh Tools > Sculpting Tools menu.

Autodesk Maya 2020 LT Free Download

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Stroking a sculpting tool over a region of the model repositions the vertices in that area, changing its 3D form. When vertices are repositioned, the polygonal faces associated with them are also repositioned. Since the polygonal faces reflect light, color, and shading information back to your eye, this changes how the form of the 3D object appears.

Autodesk Maya 2020 LT Free Download

The density of the vertices/faces on a polygonal model dictate how much fine detail can be sculpted. If the polygonal model has fewer vertices, there are fewer points to change its 3D shape. To sculpt finer detail, increase the number of polygons by subdividing.

Sculpting in Maya is as easy as loading a model, subdividing it, and stroking on the model with a sculpting tool.

  1. In your scene, select a single mesh or multiple meshes.If multiple meshes are selected before you activate a sculpting tool, you can sculpt on all of them.Tip: If you don’t have any meshes to sculpt, open the Sculpting Base Meshes in the Content Browser (click guid-d691623f-47d6-4fb2-8331-491c8c6475f6-8944660 on the Sculpting shelf) and select a mesh from one of the folders. Middle-drag a mesh from the Content Browser into your scene.
  2. Select a tool from the Sculpting shelf or the Mesh Tools > Sculpting Tools menu.Maya switches to object mode.
  3. In the scene, position the cursor on a mesh and click a few times in the same location without moving the cursor across the surface of the model.The vertices on the mesh move slightly outwards in that region. Each click moves the vertices within the tool cursor upwards. How far the vertices move depends on the Strength setting combined with the Falloff setting. The Size setting is represented by the circular tool cursor that appears whenever it is over the mesh. A heads up display message appears at the bottom of the viewport, telling you the name of the mesh you are sculpting.
  4. Click-drag the tool cursor across the surface of the mesh(es).The vertices on the mesh(es) move slightly outwards along the path you dragged. This path is called a stroke. A stroke appears continuous but is actually made up of many stamp impressions that overlap each other. You can adjust how much the stamps overlap by adjusting the Spacing setting.Note: Not all sculpting tools move vertices outwards by default.
  5. To reverse the sculpt direction for any sculpting tool, Ctrl-drag the cursor across the surface of the model.guid-ff36cbb2-a955-4cd1-8701-86b927b0e143-8190923
  6. To create smoother strokes, turn on Steady Stroke in the Tool Settings window. See Produce smooth tool strokes.Note: Double-click a tool in the Sculpting shelf to open the Tool Settings window.
  7. (Optional) Use the Ctrl + (1-9) hotkeys to switch to another sculpting tool. See Sculpting tools hotkeys.
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