MAYA教程二.doc

BEWISE 2009 at the San Diego Supercomputer Center
Jeff Sale, [e-mail]
http://education.sdsc.edu/bewise2009/
It’s All About 3D!
How to Build a 3D Model of San Diego With Maya
Step 1: Create a PolyPlane 

Click the Polygons tab above the viewing area, and select the PolyPlane object as shown below. Click and drag on the black grid in the viewing area to draw your polyplane.

Step 2: Adjust the PolyPlane height, width, and subdivisions
If the Attributes Editor panel is not already visible on the right, Click the Show/Hide Attributes Editor button in the upper right.
Click the “PolyPlane1” tab in the Attributes Editor panel on the right. Set the height and width to 1.0 and the Subdivision Height and Width to 20 as shown below. Click the “pPlane1” tab and set the three Translate values to 0.

Step 3: Set the texture of the PolyPlane to an image of San Diego
Step 3.1: Select the lambert1 tab from the Attributes Editor Panel. In the Common Material Attributes section, click the black and white checkered button to the right of the Color attribute.

Step 3.2: In the Create Render Node window, click the File button for 2D Textures.

Step 3.3: Click the folder icon to the right of the Image Name text box.

Step 3.4: In the Open File dialog box, navigate to the Desktop and open the “bewise2009” folder. Select the "sdbayaerial.tif" file and click “Open”.

To see your new texture on the PolyPlane, hit the "6" key on the keyboard to switch from wireframe view to full texture view. Hit the "5" key to switch back to wireframe view.

Step 4: Add height elevation to your PolyPlane to create a Terrain model
Step 4.1: In the Window menu under Rendering Editors, select "Hypershade...".

Step 4.2: In the Create Maya Nodes list on the left of the Hypershade window, close all categories by clicking the little black triangle to the left until you get to General Utilities. Click "Height Field".

The Height Field should appear hilighted in yellow as shown below. This creates an overlay on the polyplane that you can create mountainous terrain with.

Step 4.3: In the parameters window on the right, click the black and white checkered button to the right of the Displacement parameter.

Step 4.4: Click the File button from the 2D Textures list in the Create Render Node window.

Step 4.5: In the File Attributes window, click the folder icon to the right of the Image Name text box.

Step 4.6: Navigate to the Desktop, open the “bewise2009” folder, select the file "sdbaydem.tif" from the Open File dialog box, and click “Open”.

Step 4.7: Minimize the Hypershade window by clicking the little dash icon in the upper right corner, and click the newly-formed terrain in the Viewing Area to hilight it green.

Step 4.8: In the Edit menu, select "Delete" to remove this low-resolution height field from the model.

Step 4.9: Open the Hypershade Editor window under the Window>>Rendering Editors menu and select the Textures tab.

Step 4.10: With the RIGHT MOUSE BUTTON, click and hold the cursor on the "file2" icon. A set of menus should appear. Keep holding the mouse down, drag down to "Graph Network" and release.

You should see something like the image below in the lower part of the Hypershade window.

Step 4.11: With the MIDDLE MOUSE SCROLL BUTTON, click and drag the "file2" icon over the Displacement Mat. text box until you see a border appear and release the mouse button.

You should see a yellow highlighted displacement icon in the lower right of the Hypershade window.

Step 4.12: Click on the polyplane in the Viewing Area to hilight it green. Hold the spacebar down. A larger set of menus should appear as shown below. In the Modify menu under the Convert submenu, select the "Displacement to Polygons" menut item.

You should see a high-resolution terrain highlighted in green in the Viewing Area as shown below.

Step 4.13: Choose one of the Side Views (left, right, front, back) so you can adjust the height to a lower, more reasonable value.

Step 4.14: Hit the number "6" on your keyboard to switch from wireframe view to full texture view. Your model should look something like the image below:

You can change your view orientation by holding the Alt key down and using the left, middle, or right mouse buttons to rotate, pan, and zoom the view respectively.
That's it! Congratulations, you are now a Maya modeling expert!
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