2012年10月21日星期日

the best way to make thick, packed fur in maya

the best way to make thick, packed fur in maya

To run Maya, select Start > All Programs > Alias Wavefront > Maya 5.0 > Maya Unlimited 5.0. Let's first learn how to create objects and move the camera. When Maya starts, it brings up a window asking you to view a few tutorials. These are each about a minute long, and it's worth it to watch the first three of them, which show how to move the camera; move, rotate and scale objects; and create objects.
A. Moving the camera
Maya opens up a perspective view of an empty scene by default. To manipulate your view of the scene, use the <Alt> key in combination with one of the three mouse buttons: <Alt>+<Left button> rotates the scene, <Alt>+<Middle button> translates the camera in the plane (pans), and <Alt>+<Right button> zooms in and out.
B. Creating and manipulating objects
In Maya, you can create either NURBS objects or polygonal objects. Let's first create a NURBS sphere. To do this, click on the Create menu and select NURBS Primitives > Sphere (the little boxes on the right side of the menu options bring up advanced options, which we won't need in this tutorial). This creates a sphere at the origin, which is shown as a wireframe object.
To manipulate the sphere, use the toolbar along the right-hand side of the screen. Here's what the toolbar looks like, as well as a description of each tool.
The Select Tool: Select objects in the scene.
The Move Tool: When the Move tool is active, a widget with three arrows will appear, centered on the selected object, one for each of the X, Y, and Z axes. Clicking on one of the arrows will allow you to move the object along that axis. In addition, by clicking on the little yellow window that appears where the three axes meat, the object can be moved in a plane passing through the object, perpendicular to the view direction.
The Rotate Tool: When the Rotate tool is active, three circumferences of a sphere appear around the selected object, one around each of the X, Y, and Z axes. Clicking on one of the circumferences allows you to rotate the object about the respective axis. A fourth circle, colored yellow, allows you to rotate the object about an axis parallel to the view direction.
The Scale Tool: Finally, the Scale tool brings up a widget similar to the move widget. In this case, dragging one of the three arrows scales the object non-uniformly along that axis; clicking and dragging the center of the widget scales the object uniformly.
C. Rendering the scene
To create a rendering of the scene, just hit the Render the current frame button in the toolbar at the top of the screen. After a few seconds, a rendering will appear. By default, this is a 320x240 image, rendered from the current viewpoint. Although you may not have created any lights, you will probably still be able to see the objects in the scene; apparently a default light is used if none are specified.
To change the rendering options, open the Render Globals window by clicking on the Display Render Globals window button . Later on, we will show you how to render multiple frames of an animation.
II. Creating Fur
A. Using a preset hair style
While Maya objects are bald by default, giving them a nice coat of lush fur is extremely simple. Just follow these steps:
Create an object to apply fur to (either use the one you created in part I.B. or create a new scene and select Create > NURBS Primitives > Sphere).
Select the sphere using the Select tool .
Select the Fur tab in the tabbed toolbar near the top of the screen:
This toolbar has a set of pre-defined hair and fur styles, from bear to wet otter. Select the Lion Mane style.
After a moment, you will see wavy lines grow out of the sphere. This is a visualization of how the hair will look when the scene is rendered. Render the scene (see Section I.C. above) to get an idea of how the furry sphere looks.
The hair may not be lit well at first, so you may want to add some lights to fix this. To do so, select Create > Lights > Directional Light (or create a different kind of light, such as a spot light). Lights can be manipulated with the same set of tools as objects.
B. Changing the fur parameters
The Lion Mane fur is just a set of preset parameters controlling the style and look of the hair, as are all of the pre-defined fur styles. You can experiment with these parameters by doing the following:
1. Select the fur by clicking on one of the strands (note that this is different from selecting the sphere itself).
2. Open the Attribute Editor pane, by clicking on the Show or hide Attribute Editor button , found in the toolbar in the top right corner of the screen.
This pane should open up on the left side of the screen, and looks like this:
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