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Polygonal Texturing. CGDD 4113. UV Coordinates (AKA Texture coordinates). (0, 1). (1, 1). (0, 1). (1, 1). Polygon to be textured. (0, 0). (1, 0). (0, 0). (1, 0). UV Coordinates (AKA Texture coordinates). (0, 1). (1, 1). (0, 1). (1, 1). (0, 0). (1, 0). (0, 0). (1, 0).

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uv coordinates aka texture coordinates
UV Coordinates(AKA Texture coordinates)

(0, 1)

(1, 1)

(0, 1)

(1, 1)

Polygon to betextured

(0, 0)

(1, 0)

(0, 0)

(1, 0)

uv coordinates aka texture coordinates1
UV Coordinates(AKA Texture coordinates)

(0, 1)

(1, 1)

(0, 1)

(1, 1)

(0, 0)

(1, 0)

(0, 0)

(1, 0)

uv coordinates aka texture coordinates2
UV Coordinates(AKA Texture coordinates)

(0, 1)

(1, 1)

(0, 1)

(1, 1)

(0, 0)

(1, 0)

(0, 0)

(1, 0)

uv coordinates aka texture coordinates3
UV Coordinates(AKA Texture coordinates)

(0, 1)

(1, 1)

(0, 1)

(1, 1)

(0, 0)

(1, 0)

(0, 0)

(1, 0)

what happens now
What happens now?

(0, 1)

(1, 1)

(0, 4)

(4, 4)

Polygon to betextured

(0, 0)

(4, 0)

(0, 0)

(1, 0)

what happens now1
What happens now?

(0, 1)

(1, 1)

(0, 4)

(4, 4)

Polygon to betextured

(0, 0)

(4, 0)

(0, 0)

(1, 0)

what about now
What about now?

(0, 1)

(1, 1)

(0, 0)

(1, 0)

basic problem
Basic Problem
  • How to map rectangular images to non-rectangular objects
  • Usually, there’s built-in:
    • Cube
    • Cylinder
    • Sphere
    • Flat
  • What about our character? How do we map that?
the uv texture editor window uv texture editor
The UV Texture editor(Window -> UV Texture Editor)
  • Select the dog, then open the editor
the nose
The Nose
  • Select faces, then Create UVs->Planar Mapping->□ (from Z-axis)
  • In UV Editor, RMB and select UV, then select the entire nose
the arms
The ARMs
  • Start by selecting the faces from *both* hands
  • Select the faces on the arms using SHIFT+>
  • Follow instructions closely – lots of options!
paint yer doggie
Paint yer doggie
  • Under the “Rendering” set of menus (Texturing->3D Paint Tool->□)
  • Make sure the Attribute to Paint is set to Color
  • Assign/Edit Textures:
directly paint on the geometry
Directly paint on the Geometry
  • Turn on File Textures->Extend Seam Color
  • Optionally change Radius(U)
  • Set color to beige and then paint!
  • Probably want Stroke->Reflection on too!
    • You should see two brushes…
paint effects
Paint Effects
  • In the Brush section, choose Paint Effects, then the GetBrush icon
eyeballs
Eyeballs
  • Use HyperGraph to create a Phongshader
  • Use a Ramp for the eyeColor
  • Make it a U Ramp

Click here to make a newgradient point