Rendering

This chapter describes procedures and precautions for creating cameras or lights using NintendoWare in Maya.

Camera
Light

Camera

• Camera Types

  One-node, two-node (Camera and Aim), and three-node cameras (Camera, Aim, and Up) are supported.
  As the projection methods, both perspective camera and orthographic camera are supported. Set orthographic camera by selecting the Orthographic attribute for the camera node.

• Cameras that are not output

  A camera is not output if the Visibility attribute of the camera's transform node is cleared or the Template attribute is selected. (If an animation has been set, this is determined by the value of Start frame.)

• Rotate Order

  For single-node cameras, the zxy value is recommended for the transform node's Rotate Order attribute.

• Camera Scale

  Set the camera node's Camera Scale attribute to 1.0.

• Aspect Ratio

  The aspect ratio is configured using the camera node's Horizontal/Vertical Film Aperture attribute, or the Attribute Editor's Film Aspect Ratio.

• Angle of View

  To configure the angle of view, use the following: the camera node's Focal Length attribute, the Attribute Editor's Angle of View attribute data, or the NW4C Set Camera Fovy plug-in.
  Note that Angle of View is the angle of view in the horizontal direction. It differs from the fovy, which is the angle of view in the vertical direction output to the intermediate file.
  If you want the Fovy as configured with CreativeStudio to be reflected in Maya, use the NW4C Set Camera Fovy plug-in.
  The relationship between the angle of view in the horizontal direction and the angle of view in the vertical direction is determined by the aspect ratio.
  The equation below describes Fovy's dependence on Vertical Film Aperture and Focal Length:

  Fovy = 2 * atan(verticalFilmAperture * 0.5 / (focalLength * 0.03937))

  where 0.03937 is a coefficient used to convert focalLength, expressed in millimeters, to verticalFilmAperture, expressed in inches.）

• Orthographic Camera View Volume

  When Fit Resolution Gate is other than Vertical, the Orthographic Width attribute is taken as the width of the view frustum, and the height (height in the intermediate file) is calculated from the aspect ratio and output. When Fit Resolution Gate is Vertical, the Orthographic Width attribute is taken as the view frustum's height and output without modification.

• Valid Attributes

  The following attributes are reflected in the intermediate files.

  • Translate, Rotate and Scale of the camera's transform node (Rotate is only for a one-node camera)
  • Translate of the Aim locator's transform node (for two- and three-node cameras)
  • Translate of the Up locator's transform node (for three-node camera)
  • Twist of the LookAt node (for two-node camera)
  • Horizontal/Vertical Film Aperture, Focal Length, Near/Far Clipping Plane and Orthographic Width of the camera node

  Global coordinate values are output for the camera translate and rotate. If the camera's transform node, the Aim locator, and the Up locator have a parent node, the Translate/Rotate/Scale of the parent node are also reflected.

Lights

• Light Types

  Ambient light, directional light, point light, and spot light are supported.

• Lights that are not output

  A light is are not output if the Template attribute of the light's transform node is selected. (If n animation has been set, this is determined by the value of Start frame.

• Valid Attributes

  The following attributes are reflected in the intermediate files.

  • Translate, Rotate, Scale, and Visibility of the light's transform node
    Rotate is output as the direction of light (except for ambient light). Visibility is output as a lighted state.
  • Color of the light's shape node
    This is relected in the RGB components of the ambient color in the case of ambient lights.
    In the case of a directional light, point light or spotlight, this is reflected in the RGB components of the diffuse color and specular color. The same value is used for specular color 0 and specular color 1.
    (0, 0, 0, 1) is always output for the ambient color of directional lights, point lights and spotlights.
    The alpha component of each color is fixed to 1.
  • The Emit Diffuse attribute of the light's shape node (except for ambient lights)
    If this attribute is cleared, (0, 0, 0, 1) is output for the diffuse color.
  • The Emit Specular attribute of the light's shape node (except ambient lights)
    If this attribute is cleared, (0, 0, 0, 1) is output for specular color 0 and specular color 1.
  • The Cone Angle, Penumbra Angle, and Dropoff attributes of the light's shape node (spotlights only)
    Thiese data are reflected in the angular attenuation lookup table.

  Global coordinate values are output for light movement and direction. If the light's transform node has a parent node, the translate and rotate settings of the parent node will also be reflected. Visibility of the parent node will also be reflected in these settings.

CONFIDENTIAL