#X3D V3.2 utf8
PROFILE Interchange
COMPONENT Texturing:2

# Test MultiTexture.function.

# ----------------------------------------------------------------------------
# Result = complement(material * squirrel)
# We use squirrel_alpha.png instead of squirrel.png to visualize that alpha
# channel is untouched by function=COMPLEMENT, it only inverts RGB.

Transform {
  children Shape {
    appearance Appearance {
      material Material { }
      texture MultiTexture {
        texture DEF TextureSquirrelAlpha ImageTexture {
          url "data/squirrel_alpha.png"
          repeatS FALSE
          repeatT FALSE
        }
        function "COMPLEMENT"
      }
    }
    geometry Box { }
  }
}

# ----------------------------------------------------------------------------
# Result = complement(material * squirrel * pattern)

Transform {
  translation 2.2 0 0
  children Shape {
    appearance Appearance {
      material Material { }
      texture MultiTexture {
        texture [
          USE TextureSquirrelAlpha
          ImageTexture { url "data/pattern.png" }
        ]
        function [ "" "COMPLEMENT" ]
      }
    }
    geometry Box { }
  }
}

# ----------------------------------------------------------------------------
# Result = complement(complement(material * squirrel) * pattern)
# You should notice normal colors of the squirrel (it's inverted twice).

Transform {
  translation 4.4 0 0
  children Shape {
    appearance Appearance {
      material Material { }
      texture MultiTexture {
        texture [
          USE TextureSquirrelAlpha
          ImageTexture { url "data/pattern.png" }
        ]
        function [ "COMPLEMENT" "COMPLEMENT" ]
      }
    }
    geometry Box { }
  }
}

# ----------------------------------------------------------------------------
# Result = white (unlit)
# (because squirrel in opaque, alpha = 1 everywhere).
# You should notice normal colors of the squirrel (it's inverted twice).

Transform {
  translation 6.6 0 0
  children Shape {
    appearance Appearance {
      material Material { }
      texture MultiTexture {
        texture ImageTexture { url "data/squirrel.png" }
        function "ALPHAREPLICATE"
      }
    }
    geometry Box { }
  }
}

# ----------------------------------------------------------------------------
# Result = gray (unlit)
# (because texture is ignored, we just take constant MultiTexture.alpha
# and copy it to red, green, blue).

Transform {
  translation 8.8 0 0
  children Shape {
    appearance Appearance {
      material Material { }
      texture MultiTexture {
        texture ImageTexture { url "data/squirrel.png" }
        source "FACTOR"
        mode "SELECTARG2"
        alpha 0.5

        # color should be unused.
        # If you see a blue box, then your X3D browser ignored
        # function="ALPHAREPLICATE".
        color 0 0 1

        function "ALPHAREPLICATE"
      }
    }
    geometry Box { }
  }
}

# Viewpoint ------------------------------------------------------------------

# Camera settings "encoded" in the VRML/X3D declaration below :
# direction 0 0 -1
# up 0 1 0
# gravityUp 0 1 0
Viewpoint {
  position 4.4000000953674316 0 11.656000137329102
  orientation 0 0 1 0
}