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Environmental sensor component

This component defines nodes to detect some changes in the environment. ProximitySensor, the only currently implemented node, alows to detect when user is inside a defined 3D space.

See also X3D specification of the Environmental sensor component.

Contents:

  1. Demos
  2. Supported nodes

1. Demos

For demos and tests of these features, see the sensors_environmental subdirectory inside our VRML/X3D demo models.

2. Supported nodes

  • ProximitySensor(Pascal API: TProximitySensorNode)

    TODO: centerOfRotation_changed are not generated. Rest works Ok, according to spec. Timestamps for isActive, enter/exitTime are not interpolated (they are simply timestamps when this was detected), this shouldn't be a problem in typical uses.

  • VisibilitySensor(Pascal API: TVisibilitySensorNode)

    Works fully.

    For now, visibility is determined only by whether the box fits within a view frustum. We don't use occlusion query yet for this, which means that visibility is not as conservative as it could be. For example, box hidden behind a wall within frustum will still be visible (according to this sensor). We have occlusion query (even two approaches for it) implemented in our engine, so integration of VisibilitySensor with it will definitely happen one day (please report if you badly need this :).

TODO: TransformSensor missing.

Documentation
  1. Tutorial: 3D physics fun
    1. Manual
      1. Creating Game Data
        1. API Reference
        2. Why Pascal?
        3. Modern Object Pascal Introduction
          1. Overview for Unity Developers
          2. Scene Graph: X3D nodes
            1. Demo models
            2. Standard Nodes
              1. Core
              2. Time
                1. Extensions
              3. Networking
              4. Grouping
              5. Rendering
                1. Extensions
              6. Shape
                1. Extensions
              7. Geometry3D
                1. Extensions
              8. Geometry2D
              9. Text
                1. Extensions
              10. Sound
              11. Lighting
              12. Texturing
                1. Extensions
                2. X3D MultiTexturing problems and proposed solutions
              13. Interpolation ("how to animate things")
                1. Extensions
              14. Pointing device sensor
              15. Key device sensor
              16. Environmental sensor
              17. Navigation
                1. Extensions
              18. Environmental effects
                1. Extensions
              19. H-Anim
              20. NURBS
                1. Control points are in homogeneous coordinates
              21. Scripting
              22. Event utilities
                1. Extensions
              23. Programmable shaders
              24. CAD geometry
              25. Texturing3D
              26. Cube map environmental texturing
            3. Larger X3D Extensions
              1. Shader Effects (Compositing Shaders)
              2. Mirrors on flat objects
              3. Screen (Post-Processing) Effects
              4. Shadow Maps
              5. Shadow Volumes
              6. (Old) VRML 1.0
            4. Complete list of X3D Extensions
            5. CastleScript language reference
            6. Castle Animation Frames (castle-anim-frames) file format
            7. VRML / X3D time origin considered uncomfortable
            8. NIST conformance test suite
          3. Conferences

            Copyright Michalis Kamburelis and Castle Game Engine Contributors.

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