3D Modeling Exam Part 1

  1. Maya's Interface is customizable using MEL. What is MEL?
    Maya Embedded Language
  2. How do you access the marking menu?
    By right-clicking the selected object
  3. How can you access the settings for the selection tools?
    By double-clicking the selection tool
  4. What is soft selection?
    Selection by the distance from the fully selected element
  5. Fall off radius: Surface
    Nearest path along the surface
  6. Fall off radius: Object
    Move objects/select them depending on the distance from the origin object
  7. How do you keep drop menus open when selecting?
    By holding down the control key
  8. What does Shift M do?
    Shows and hides the menu in the viewport
  9. What does control M do?
    Shows and hide the menu in the main interface
  10. What is the shortcut key for the last command?
  11. How do you access the creation menu?
    Shift Right Click
  12. Subdivision axis
    Should be even around the axis
  13. How do you get more control when adjusting objects?
    Control-Drag in the input box
  14. True or False: Layers can't have the same name as the object.
  15. Layers: What does the P Key do?
    Shows/Hides on playback
  16. Layers: What does the T Key do?
    Shows wireframe
  17. Layers: What does the R Key do?
    Object becomes non selectable from the viewpoint
  18. How do you isolate an object.
    Select the object and hit control-1
  19. Characters communicate non-verbally in 3 different ways:
    • Expression - Movements of the muscles in the face
    • Gesture - Arms, hands, fingers
    • Posture - Emotion
  20. How an audience understands a character’s role in a story
    • Behavior
    • Clothing
    • Context
    • Design
  21. Proportions: Young Child Head Height to Body Height
  22. Proportions: Adulthood Head Height to Body Height
    1:7 or 1:8
  23. What is the only part of the body that grows throughout life
  24. Expressive Features
    • Easily communicated through eyebrows: Distance and Shape
    • Minimize the distance between eye and eyebrow
    • Expressive Eyelids
  25. Assumptions
    • Use cultural shortcuts
    • Style of Character
    • Outlines
  26. Size and Shape
    Makes characters easily recognizable
  27. Recognizable Types
    • Assets
    • Make characters to have gestures and expressions
  28. What are the fundamental building blocks of polygon models?
  29. File Naming
    • Never use spaces or hyphens
    • Use Camel Case and underscores
  30. What does NURBS stand for?
    Non Uniform Ration B-Splines
  31. Non Uniform
    Sections of curves can be independently edited
  32. Rational
    Control Vertices can be given different weights
  33. B-Spline
    A basis spline defined by CVs making up a hull
  34. Where are Isoparms lined up?
    Across the surface
  35. Do NURBS Patches use U and V directions or X, Y, and Z directions?
    U and V directions
  36. What do NURBS Patches share characteristics with?
    UV Mapping
  37. Difference between NURBS and Subdivision surfaces
    Subdivisions are one seamless surface

    NURBS models are often made up of many patches
  38. Which cannot have surface curvatures precisely defined: NURBS or Subdivision surfaces?
    Subdivision Surfaces
  39. NURBS and Subdiv

    Which are iterative and which are precise?
    Subdivisions are an iterative process

    NURBS are precise
  40. Poly Modeling and NURBS:
    Which is best for animation and 3D printing
    Poly Modeling
  41. Poly Modeling and NURBS:
    Which is best for manufacturing and surface analysis?
  42. Who at Pixar developed subdivision surfaces?
    Ed Catmull
  43. Why were subdivision surfaces developed?
    Because the NURBS used for animation in early days would result in cracks between the surfaces
  44. What do more CVs allow for but lack as a result?
    More detail but lack control needed for design work
  45. NURBS Patches are __ sided
  46. What do NURBS always have?
    A seam
  47. What does the Make Live tool do?
    Allows for drawing a UV Curve in the UV space of the patch
  48. Lofted Surface
    • Boatbuilding Term
    • Have cross sections
    • Build surfaces by selecting the cross sections in the appropriate order
  49. Topology
    The art and technology of creating 3D characters that can be distorted realistically without producing shading artifacts.
  50. Polls
    Vertices with less than 4 edges flowing into them break the edge loops
  51. Stars
    5 or 6 pointed vertex
  52. Kiting
    A way to multiply the numbers of faces in a line.
  53. What is Arnold?
    Maya’s inbuilt rendering engine
  54. Does Arnold support Toon Shading?
  55. What rendering engine should you use for Toon Shading
    Maya Software
  56. Fill Shader
    Create toon shading based on the light angle
  57. Outlines
    Separate from the fill and controllable independent from the fill shader
  58. Materials: Base
    Diffuse Color
  59. Diffuse
    The color of something under diffuse light (eg. Cloudy day)
  60. What latin word does the term "camera" come from?
    “Chamber” or “room”
  61. Early Cameras
    • Lightproof tents with small hole in one wall
    • The smaller the hole, the shaper the image
    • The Larger the hole the fuzziness of the image because of more light
  62. What are camera lenses used for?
    To provide more light without making the pinhole larger
  63. What do lenses create?
    Unwanted Focal Length which affects the way imaged are rendered
  64. Prime Lenses
    • Fixed focal length
    • Advantage is you don’t have all the adjustment mechanism, have a larger aperture
  65. What is an ideal Focal Length?
    Between 50mm and 70mm
  66. What happens with a focal length of 100 or more?
    The image becomes flat
  67. What is the focal length of orthographic cameras
  68. Aperture
    Allows the user to adjust the amount of light entering the camera
  69. Depth of field
    • The range of distances from the image plane that are in sharp focus.
    • The distance between the nearest and furthest objects in a scene that appear sharp.
    • Miniaturizes elements of the photograph.
  70. Ansel Adams
    Known for taking landscape photographs with a pinhole sized aperture
  71. Three Point Lighting
    Uses a Key or Main light for the main planes of the subject
  72. Fill Light
    Removes any dark areas
  73. Back or Rim Light
    • Pops the subject out of the background
    • Important with black and white films
  74. Color
    • Color adds information to shape and form
    • The shorter wavelength the more energetic and damaging they are
    • Infrared – Heat
  75. Additive Color
    All colors add up to white

    • Monitors, stage lights, projectors, and light emitting objects
    • Transparency (Alpha Channel)
    • PNG or TARGA files
    • Z Channel – Depth of each element of the picture from the camera
  76. Subtractive Color
    All colors add up to black

    • Printing inks, paint work
    • Absorb specific wavelengths of light
  77. Prisms
    Splitting sunlight almost white light
  78. What influences color in an image
    • The color of the original material
    • Color or lighting of the surroundings
    • The Level of lighting
    •       Eyes are sensitive to blue
    •       Movies shot under blue light at night
    • The atmosphere (fog, absorption)
    •       Objects appear blue from far away
    •       Reds are absorbed by the atmosphere
    • Additive or subtractive media (print, monitor)
    • The accuracy of the inks or monitor setup
    • The observer’s vision
  79. Color Gamut
    The range of colors that can be shown by a medium

    • CMYK is smallest
    • Standard RGB is better but is digital
    • Film – Widest color gamut
  80. Color Depth
    The number of distinct colors an image can contain
  81. Color Depth: 1 bit
    Black and White
  82. Color Depth: 8 bit
    Indexed Color - 256 colors
  83. Color Depth: 24 Bit
    Full Color - 16.7 Million colors
  84. 3 Color Channels
    • RGB
    • Each channel is a greyscale image
    • Indicates how much of that particular color the pixel contains
  85. Banding
    Function of the limited amount of information that is available to describe the grey.
Card Set
3D Modeling Exam Part 1
Study Guide for 3D Modeling Exam