lights.x3dv

#X3D V3.2 utf8
PROFILE Interchange

# Lights demo.
#
# Three lights : point light (the red one; has position),
# spot light (the blue one; has position and direction)
# and directional light (green one; has only direction).
#
# We can see the same scene duplicated three times.
# The left one is illuminated by the point light and spot light.
# The middle one is illuminated only by the directional light.
# And the right one is illuminated by all three kinds of lights.
#
# You can use built-in raytracer
# in view3dscene (use "classic" raytracer for this model)
# to render view of this model with shadows.
#
# We want this to be exactly identical to analogous VRML 1.0 version inside
# see ../vrml_1/lights.wrl. Just for the sake of test.
# To do this, we use "ambientIntensity 1" for every light.
# In VRML 1.0 ambientIntensity is taken from intensity,
# and default intensity is 1. In VRML >= 2.0 default ambientIntensity is 0.
# So lights in VRML >= 2.0 by default are darker (and usually better-looking,
# actually) than VRML 1.0.

NavigationInfo { headlight FALSE }

# Camera settings "encoded" in the VRML declaration below :
# direction -0.003885044017807 -0.000000000002812 -0.11726900190115
# up 1.56576085430515E-009 1 4.36595186670274E-008
# gravityUp 0 1 0
Viewpoint {
  position 26.037553787231445 -0.00000117056959 37.542552947998047
  orientation 0.010424139909446 0.999979853630066 -0.000200989466975 0.033117223531008
}

Switch {
  choice [
    # setup point light
    DEF LightPointPos Shape {
      geometry PointSet {
        coord Coordinate { point 10 0 0 }
        color Color { color 1 0 0 }
      }
    }

    DEF LightPoint PointLight {
      ambientIntensity 1
      location 10 0 0
      color 1 0 0
      # radius below is not needed (in X3D, we can limit by global=FALSE).
      # But it's useful: we can see light radius on far spheres,
      # when shader (per-pixel) rendering (and checking or radius) in on.
      #radius 20
      global FALSE
    }

    # setup spot light
    DEF LightSpotPos Shape {
      geometry PointSet {
        coord Coordinate { point 4 1.6 1 }
        color Color { color 0 0 1 }
      }
    }

    DEF LightSpot SpotLight {
      ambientIntensity 1
      location 4 1.6 1
      direction -0.2 0 -1
      color 0 0 1
      cutOffAngle 0.1
      # radius below is not needed (in X3D, we can limit by global=FALSE).
      # But it's useful: we can see light radius on far spheres,
      # when shader (per-pixel) rendering (and checking or radius) in on.
      #radius 20
      global FALSE
    }

    # setup directional light
    DEF LightDir DirectionalLight {
      ambientIntensity 1
      color 0 1 0
      direction 1 0 -1
    }

    DEF Objects Group {
      children [
        Shape {
          appearance Appearance { material Material { diffuseColor 1 1 1 } }
          geometry Cylinder { }
        }
        Transform {
          translation 4 0 0
          children Shape {
            appearance
              DEF DefLitAppearance Appearance { material Material { diffuseColor 1 1 1 } }
            geometry Box { }
          }
        }

        Transform {
          translation 0 4 0
          children Shape {
            appearance USE DefLitAppearance
            geometry Sphere { }
          }
        }

        Transform {
          translation 0 0 4
          children Shape {
            appearance Appearance {
              material Material { diffuseColor 1 1 1 }
              texture ImageTexture { url "../textures/bricks2.jpg" }
            }
            geometry Cone { }
          }
        }

        Transform {
          translation 0 0 -16
          children Shape {
            # make SpotLight circle perfect
            shading "PHONG"
            appearance USE DefLitAppearance
            geometry Sphere { radius 4 }
          }
        }
      ]
    }
  ]
}

Transform {
  children [
    USE LightPointPos
    USE LightPoint
    USE LightSpotPos
    USE LightSpot
    USE Objects
  ]
}

Transform {
  translation 20 0 0
  children [
    USE LightDir
    USE Objects
  ]
}

Transform {
  translation 40 0 0
  children [
    USE LightPointPos
    USE LightPoint
    USE LightSpotPos
    USE LightSpot
    USE LightDir
    USE Objects
  ]
}