#X3D V3.0 utf8
PROFILE Interchange
COMPONENT Texturing:2
COMPONENT Text:1

# Very similar to modes_and_sources.x3dv, testing a SUBTRACT mode on RGB
# and REPLACE on alpha. This is usually the desired way to subtract textures.

PROTO MyText [ initializeOnly MFString string "" ] {
  Transform {
    translation 0 1.5 0
    children Shape {
      appearance Appearance {
        material Material { diffuseColor 1 1 0 }
      }
      geometry Text { string IS string
        fontStyle FontStyle { size 0.2 } }
    }
  }
}

# ----------------------------------------------------------------------------
# Row 1: MultiTexture.source says to mix squirrel.png
# with previous unit (pattern.png).

Transform {
  translation 16.5 0 0
  children [
    Shape {
      appearance Appearance {
        texture MultiTexture {
          mode [ "MODULATE" "SUBTRACT / REPLACE" ]
          texture [
            ImageTexture { url "data/pattern.png" }
            ImageTexture { url "data/squirrel.png" }
          ]
        }
        material Material { }
      }
      geometry IndexedFaceSet {
        coord Coordinate { point [ 0 0 0, 1 0 0, 1 1 0, 0 1 0 ] }
        coordIndex [ 0 1 2 3 ]
        texCoord TextureCoordinate {
          point [ 0 0, 1 0, 1 1, 0 1, 0 0, 1 0, 1 1, 0 1, ]
        }
        solid FALSE
      }
    }
    MyText { string [ "subtract on RGB only" "(pattern with squirrel)" ] }
  ]
}

# ----------------------------------------------------------------------------
# Row 2: MultiTexture.source says to mix squirrel.png with diffuse color.

Transform {
  translation 16.5 -2 0
  children [
    Shape {
      appearance Appearance {
        texture MultiTexture {
          mode [ "MODULATE" "SUBTRACT / REPLACE" ]
          source [ "" "DIFFUSE" ]
          texture [
            ImageTexture { url "data/pattern.png" }
            ImageTexture { url "data/squirrel.png" }
          ]
        }
        material Material { }
      }
      geometry IndexedFaceSet {
        coord Coordinate { point [ 0 0 0, 1 0 0, 1 1 0, 0 1 0 ] }
        coordIndex [ 0 1 2 3 ]
        texCoord TextureCoordinate {
          point [ 0 0, 1 0, 1 1, 0 1, 0 0, 1 0, 1 1, 0 1, ]
        }
        solid FALSE
      }
    }
    MyText { string [ "subtract on RGB only" "(diffuse with squirrel)" ] }
  ]
}

# ----------------------------------------------------------------------------
# Row 3: MultiTexture.source says to mix squirrel.png with constant yellow color.

Transform {
  translation 16.5 -4 0
  children [
    Shape {
      appearance Appearance {
        texture MultiTexture {
          mode [ "MODULATE" "SUBTRACT / REPLACE" ]
          source [ "" "FACTOR" ]
          color 1 1 0
          texture [
            ImageTexture { url "data/pattern.png" }
            ImageTexture { url "data/squirrel.png" }
          ]
        }
        material Material { }
      }
      geometry IndexedFaceSet {
        coord Coordinate { point [ 0 0 0, 1 0 0, 1 1 0, 0 1 0 ] }
        coordIndex [ 0 1 2 3 ]
        texCoord TextureCoordinate {
          point [ 0 0, 1 0, 1 1, 0 1, 0 0, 1 0, 1 1, 0 1, ]
        }
        solid FALSE
      }
    }
    MyText { string [ "subtract on RGB only" "(yellow with squirrel)" ] }
  ]
}

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

# Camera settings "encoded" in the VRML/X3D declaration below :
# direction 0 0 -1
# up 0 1 0
# gravityUp 0 1 0
Viewpoint {
  position 17.573333740234375 -1.1633334159851074 7.1944084167480469
  orientation 0 0 1 0
}