Publishers of technology books, eBooks, and videos for creative people

Home > Articles > Design

Maya 4.5 Materials

  • Print
  • + Share This
This chapter is from the book

This chapter is from the book

3D Paint

Interactive Texturing

Maya allows you to not only assign textures to your objects, but also to paint them in real time. Although this sounds like an ideal way to texture everything, in practice it is limited in its value because of the awkward man-machine interface. Most of the time, you'll paint features that are required to be in specific locations, and then take the resulting 2D image to a paint program such as Photoshop for further editing.

Interactive texturing requires a fast video card operating in shaded, hardware-textured mode so that you can see the results of your paintstrokes. Note that you can paint channels other than color, such as transparency. However, interactive shaded views do not display attributes other than color, so you must remember as you paint that you are directly editing transparency, for example, rather than color—thus, white means opaque and black means clear.

Tutorial: 3D Paint Tool

In this tutorial, we'll paint on the cylinder in the scene to create a unique color design on it. The cylinder is a NURBS primitive, so it already has inherent texture mapping across its surface. All we need to do is start the 3D paint tool, and we'll be painting!

On the CD

Chapter_08\ch08tut05.wmv

  1. To ease the painting process, we'll isolate the cylinder. Select the cylinder, then choose Display | Hide | Hide Unselected Objects. Center and zoom on the cylinder by using the a hotkey—frame all.

On the CD

Chapter_08\ch08tut04end.mb

  1. Activate 3D painting with Hotbox | Texturing | 3D Paint Tool | option box. This will bring up the interactive paint dialog, as shown in Figure 8.21. Reset the dialog with the Reset Tool button at the bottom of the dialog. Note that the cursor now appears in the 3D view as a paintbrush, but if you try to paint the cylinder at this point, you will see a red X appear over it, indicating that it is not ready for painting.

Figure 8.21Figure 8.21 The 3D Paint dialog.

  1. Go to the File Textures section of the 3D Paint dialog. This section will allow you to size and assign a new bitmap to any channel you want. Make sure that color is the selected Attribute to Paint, and click the Assign Textures button. A bitmap sizing dialog will appear—set the values to 256, and click the Assign Textures button on this dialog. Now a 256x256 pixel map has been assigned to the color channel of the material assigned to the cylinder. This new bitmap has been pre-filled with your previous solid color, so you may not notice an immediate difference. If you hold your mouse over the cylinder, you'll now see a circle cursor.

  2. You can choose from many pen and paint styles that are available in Visor. Bring up Visor with shift+V. Make sure "Paint Effects" is the selected tab. Choose the "Markers" folder and pick the marker named "defaultPaint.mel." Now you can paint on the cylinder.

  3. You can easily adjust the color of the markers in the 3D Paint dialog, under the Color section, using the color swatch/slider. Try adjusting this to various colors as you mark up your cylinder, as shown in Figure 8.22.

Figure 8.22Figure 8.22 Painting on the cylinder with various marker colors.

  1. Besides simple markers, you can also paint in 2D using the various other paint effects materials. You'll find these in the other folders in your Paint Effects tab in Visor. We'll explore using and editing Paint Effects in 3D in more detail in Chapter 13, "Paint Effects." For now, try switching to the blue feathers ("down4.mel") in the Feathers folder. You can size your brush by holding down the b key as you LMB-drag left and right. You can also size the brush by entering a value into the scale attribute of the 3D Paint dialog. As you apply blue feathers to the color channel in real time, these paint effects are applying only flat 2D image changes to the texture's color bitmap. Next, paint some more with the other presets offered in Visor—it's fun! After you've tried painting the color channel for a while, render an image to see result. The shininess and all other attributes other than color remain the same, but the solid red color is now painted (defaced?) with your handiwork.

  2. Get out of 3D paint mode by switching to the cursor (hotkey: q). Hide the current object (hotkey: Ctrl+h). Unhide the cone by selecting it in the Outliner and then choosing Hotbox | Display | Show | Show Selection. Use the a hotkey to center and zoom on the isolated cone. Invoke 3D Paint with the option box again, and assign a 256x256 map to this object as in Steps 2 and 3 previously.

  3. Now, we'll apply a background color of white to this cone by setting the Flood Color (below the Color setting in the 3D Paint dialog) to white, and clicking the Flood All button.

  4. In Visor, choose the "Fun" folder, and pick cracks.mel. Now, paint some loop-de-loops on the cone—the crack direction will change based on your stroke direction. Orbit around the object to paint on its sides. You'll find that many of the complex paint effects presets work this way. Finish painting the cone using other crack colors by changing the Color attribute in the 3D Paint dialog. Finish painting with the q (cursor) hotkey, and close the Visor and 3D Paint dialogs.

  5. Unhide the other objects with the Ouliner—select them in the Outliner (using shift to select multiple items), and then unhide them with Hotbox | Display | Show | Show Selection. Now you can render a frame after repositioning the Perspective view to something that encompasses the entire frame, as shown in Figure 8.23. The painted cone may appear more readily in the reflection from the chrome sphere.

On the CD

Chapter_08\ch08tut05end.mb

Figure 8.23Figure 8.23 The rendered result—only the color channel of the red plastic cylinder and gray cone has changed.

  1. If you select one of the painted objects, bring up the Attribute Editor, and navigate to the color channel of the material assigned to the object, you can find the bitmap created by Maya from your paint work. Note that if you want to load the book's sample textures, you'll need to redirect these image pointers to the images provided on the CD-ROM.

On the CD

Chapter_08\coneShape_color.tiff

On the CD

Chapter_08\cylinderShape_color.tiff

  • + Share This
  • 🔖 Save To Your Account

Peachpit Promotional Mailings & Special Offers

I would like to receive exclusive offers and hear about products from Peachpit and its family of brands. I can unsubscribe at any time.

Overview


Pearson Education, Inc., 221 River Street, Hoboken, New Jersey 07030, (Pearson) presents this site to provide information about Peachpit products and services that can be purchased through this site.

This privacy notice provides an overview of our commitment to privacy and describes how we collect, protect, use and share personal information collected through this site. Please note that other Pearson websites and online products and services have their own separate privacy policies.

Collection and Use of Information


To conduct business and deliver products and services, Pearson collects and uses personal information in several ways in connection with this site, including:

Questions and Inquiries

For inquiries and questions, we collect the inquiry or question, together with name, contact details (email address, phone number and mailing address) and any other additional information voluntarily submitted to us through a Contact Us form or an email. We use this information to address the inquiry and respond to the question.

Online Store

For orders and purchases placed through our online store on this site, we collect order details, name, institution name and address (if applicable), email address, phone number, shipping and billing addresses, credit/debit card information, shipping options and any instructions. We use this information to complete transactions, fulfill orders, communicate with individuals placing orders or visiting the online store, and for related purposes.

Surveys

Pearson may offer opportunities to provide feedback or participate in surveys, including surveys evaluating Pearson products, services or sites. Participation is voluntary. Pearson collects information requested in the survey questions and uses the information to evaluate, support, maintain and improve products, services or sites; develop new products and services; conduct educational research; and for other purposes specified in the survey.

Contests and Drawings

Occasionally, we may sponsor a contest or drawing. Participation is optional. Pearson collects name, contact information and other information specified on the entry form for the contest or drawing to conduct the contest or drawing. Pearson may collect additional personal information from the winners of a contest or drawing in order to award the prize and for tax reporting purposes, as required by law.

Newsletters

If you have elected to receive email newsletters or promotional mailings and special offers but want to unsubscribe, simply email ask@peachpit.com.

Service Announcements

On rare occasions it is necessary to send out a strictly service related announcement. For instance, if our service is temporarily suspended for maintenance we might send users an email. Generally, users may not opt-out of these communications, though they can deactivate their account information. However, these communications are not promotional in nature.

Customer Service

We communicate with users on a regular basis to provide requested services and in regard to issues relating to their account we reply via email or phone in accordance with the users' wishes when a user submits their information through our Contact Us form.

Other Collection and Use of Information


Application and System Logs

Pearson automatically collects log data to help ensure the delivery, availability and security of this site. Log data may include technical information about how a user or visitor connected to this site, such as browser type, type of computer/device, operating system, internet service provider and IP address. We use this information for support purposes and to monitor the health of the site, identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents and appropriately scale computing resources.

Web Analytics

Pearson may use third party web trend analytical services, including Google Analytics, to collect visitor information, such as IP addresses, browser types, referring pages, pages visited and time spent on a particular site. While these analytical services collect and report information on an anonymous basis, they may use cookies to gather web trend information. The information gathered may enable Pearson (but not the third party web trend services) to link information with application and system log data. Pearson uses this information for system administration and to identify problems, improve service, detect unauthorized access and fraudulent activity, prevent and respond to security incidents, appropriately scale computing resources and otherwise support and deliver this site and its services.

Cookies and Related Technologies

This site uses cookies and similar technologies to personalize content, measure traffic patterns, control security, track use and access of information on this site, and provide interest-based messages and advertising. Users can manage and block the use of cookies through their browser. Disabling or blocking certain cookies may limit the functionality of this site.

Do Not Track

This site currently does not respond to Do Not Track signals.

Security


Pearson uses appropriate physical, administrative and technical security measures to protect personal information from unauthorized access, use and disclosure.

Children


This site is not directed to children under the age of 13.

Marketing


Pearson may send or direct marketing communications to users, provided that

  • Pearson will not use personal information collected or processed as a K-12 school service provider for the purpose of directed or targeted advertising.
  • Such marketing is consistent with applicable law and Pearson's legal obligations.
  • Pearson will not knowingly direct or send marketing communications to an individual who has expressed a preference not to receive marketing.
  • Where required by applicable law, express or implied consent to marketing exists and has not been withdrawn.

Pearson may provide personal information to a third party service provider on a restricted basis to provide marketing solely on behalf of Pearson or an affiliate or customer for whom Pearson is a service provider. Marketing preferences may be changed at any time.

Correcting/Updating Personal Information


If a user's personally identifiable information changes (such as your postal address or email address), we provide a way to correct or update that user's personal data provided to us. This can be done on the Account page. If a user no longer desires our service and desires to delete his or her account, please contact us at customer-service@informit.com and we will process the deletion of a user's account.

Choice/Opt-out


Users can always make an informed choice as to whether they should proceed with certain services offered by Adobe Press. If you choose to remove yourself from our mailing list(s) simply visit the following page and uncheck any communication you no longer want to receive: www.peachpit.com/u.aspx.

Sale of Personal Information


Pearson does not rent or sell personal information in exchange for any payment of money.

While Pearson does not sell personal information, as defined in Nevada law, Nevada residents may email a request for no sale of their personal information to NevadaDesignatedRequest@pearson.com.

Supplemental Privacy Statement for California Residents


California residents should read our Supplemental privacy statement for California residents in conjunction with this Privacy Notice. The Supplemental privacy statement for California residents explains Pearson's commitment to comply with California law and applies to personal information of California residents collected in connection with this site and the Services.

Sharing and Disclosure


Pearson may disclose personal information, as follows:

  • As required by law.
  • With the consent of the individual (or their parent, if the individual is a minor)
  • In response to a subpoena, court order or legal process, to the extent permitted or required by law
  • To protect the security and safety of individuals, data, assets and systems, consistent with applicable law
  • In connection the sale, joint venture or other transfer of some or all of its company or assets, subject to the provisions of this Privacy Notice
  • To investigate or address actual or suspected fraud or other illegal activities
  • To exercise its legal rights, including enforcement of the Terms of Use for this site or another contract
  • To affiliated Pearson companies and other companies and organizations who perform work for Pearson and are obligated to protect the privacy of personal information consistent with this Privacy Notice
  • To a school, organization, company or government agency, where Pearson collects or processes the personal information in a school setting or on behalf of such organization, company or government agency.

Links


This web site contains links to other sites. Please be aware that we are not responsible for the privacy practices of such other sites. We encourage our users to be aware when they leave our site and to read the privacy statements of each and every web site that collects Personal Information. This privacy statement applies solely to information collected by this web site.

Requests and Contact


Please contact us about this Privacy Notice or if you have any requests or questions relating to the privacy of your personal information.

Changes to this Privacy Notice


We may revise this Privacy Notice through an updated posting. We will identify the effective date of the revision in the posting. Often, updates are made to provide greater clarity or to comply with changes in regulatory requirements. If the updates involve material changes to the collection, protection, use or disclosure of Personal Information, Pearson will provide notice of the change through a conspicuous notice on this site or other appropriate way. Continued use of the site after the effective date of a posted revision evidences acceptance. Please contact us if you have questions or concerns about the Privacy Notice or any objection to any revisions.

Last Update: November 17, 2020