The editing in Blender allows, from the basic primitives (sphere, plane, cone…) generate complex surfaces recreate the objects we use in our animations.
The editing process is outlined in a reduced set of actions that are repeated until starting to approximate the surface to the object desired:
- Add primitive
- Change the position of its vertices
- Add the deleted vertices
- Change the way you view the surface
- Resize
Selecting items
To modify the geometry of an object we first select the object and then go to edit mode.
To enter this mode select the object with the mouse to edit and press the key “tab” tab or choose the menu option “Edit Mode”
The key “tab” therefore allows us to switch between the two main modes, “object” and “edition”. In the way we can change object parameters affecting its position, orientation and scale, while in edit mode which is the topology change of the object, namely, form.
In version 2.49
Pressing the key “to” in edit mode select all pass alternately (All) or any element of the geometry we are editing.
In this editing mode we indicate which of the object to be transformed and the type of transformation to apply. You can select either one by one to each vertex (for example) or the whole of them.
The transformations can be applied to the vertices, the edges of the body or polygonal faces that determine its boundary or surface.
To indicate that we want to select vertices, activate the menu bar associated with each 3D window the icon. This is next to the icons that activate the selection of edges and faces.
In version 2.49
Mientras que en la versión 2.7x
When you activate the vertex editing, were activated in intense color that it selected. To add a new vertex we can use the right mouse button with the classic combination of keys (shift) used in operating systems to multiple. If we select just the mouse, lose the previous selection, to be changed by the new element chosen.
Similarly we can select edges, and thereby determining the end points, indicating prior, Via icon, I entered this mode of selection.
In version 2.49
Now you can select on the edges that change color when activated.
The triangular icon, last, change to the selection of “faces” Body. These faces may be formed triangular or quadrangular polygons.
In version 2.49
The sides have a point at its geometric center. This item is the item you select to activate the face.
Extrusion
We can transform empezar un object simply arrastrando sus vertices, or apply a transformation to the same. One of the more useful editing operations is extrusion shapes. This operation can generate new vertices and edges may be accompanied by the corresponding faces or facets. Therefore add complexity to the model by increasing the number of surfaces.
To extrude a face select it and press the key “and” (Extrude). Then, moving the mouse, the selected face will move to the new position.
En la versión 2.7x aparecen menús laterales para los diferentes tipos de extrusión.
Pulsando sobre el menú se desplegarán nuevas opciones
You can see the difference between the three modes of extrusion offers the corresponding menu.
- Region: Move the original surface, while new sides appear
- Axles: Only the side faces which are in contact with the axles are generated. This mode changes the topology of the object substantially, to leave “hollow” inside.
- Vertices. Dragging in the extrusion process only the vertices, edges are generated only. In this case we do not add new faces to the object.
Subdivision
Finally cite this introduction to the edition, another feature of great interest: Branch supericies.
The subdivision process can add structural complexity to the surface, adding new vertices and corresponding edges and faces.
There are different modes of application, changing the number of subdivisions and fidelity or approach of the new elements to the original that we are dividing.
A set of simple tests allow us to quickly master these new menus adding structural complexity to Figure, dificultad aportan no conceptual.
We can start from a simple background to understand the basic mechanism then apply our complex models. To add the plane will press the spacebar with the mouse directly in the 3D window, and select Add->Mesh->Plane in the drop-down menu. The new plane has four vertices, four edges and a single surface.
First select the map with the mouse, we will “Edit Mode” editing mode ( key “tab” window or menu) and press the key “in”.
A full menu appears offering trading in their first positions subdivision options.
In version 2.49, al pulsar “W” tendremos el siguiente menú desplegable
En la versión 2.7x tendremos:
Las opciones se encontrarán en este caso en el menú lateral
La primera opción que vemos en el interface 2.49 es la más sencilla, is performed “partition” Single surface, with new vertices at the midpoints of the edges.
If we apply the transformation again obtain new subdivisions generated elements, in a process of “refinement” surface.
The menu option “Subdivide Multi” in 2.49 easy to define a number of divisions to be performed on the surface; an input window data to adjust the parameter or value sets the number of them.
In this example indicated to be performed in each edge two divisions, with the following result.
You must experiment with simple models to understand first the nature of the division is performed.
A división de tipo “fractal” not preserve a pattern of proportional division. The lengths and positions of points lose their regular shape. In this case, a deformation of the edge or contour line of the object is produced.
The subdivision process spreads to other faces, adding a new vertex at a corner affects the two faces that share the edge.
The figure shows how to divide a square face of the cube, the sides have also undergone a change fozado new vertices.
A detailed practice these new features begin to approach the complex modeling concept that allows us to create objects in many different ways.
How about building exercise forms the basis of the basic elements that have been, subdivision processes mixing and extrusion:
With these modified mount and other primitive elements more complex scenes
Applying textures, transparencies, relieve maps etc.. completed the creative process.
We start to model more complex shapes? The limit is imagination.
Tutorial made for version 2.49b, actualizado para la serie 2.7x
Blender Tutorial
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