Open Inventor Course interaction dir

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• sounds/:
  5 .aiff sound files.

• Inventor V2.0 .iv files:

  TEXT FILEs:

  • scene.iv
  • shapes.iv
  DATA FILEs:
  • Barcelona.iv
  • temple.iv

• Makefile

• createPaths.c++ (also uses createPaths.h):
  Manipulator attachment example: the routine createTransformPath() is used to find the transform node that affects the picked object.

  Includes the createTransformPath() function which creates a path to the transform node that affects the tail of the input path. The three possible cases are:

  1. The path-tail is a node kit. Just ask the node kit for a path to the part called "transform"
  2. The path-tail is NOT a group. Search siblings of path tail from right to left until you find a transform. If none is found, or if another transformable object is found (shape,group,light,or camera), then insert a transform just to the left of the tail. This way, the manipulator only effects the selected object.
  3. The path-tail IS a group. Search its children left to right until a transform is found. If a transformable node is found first, insert a transform just left of that node. This way the manip will affect all nodes in the group.

  (This is excerpted from the Inventor Mentor, volume 1, chapter 15, example 3.)

• highlight.c++:
  Selection highlighting program. Reads a file in, then allows objects in the scene to be selected using a selection node. Selected objects are highlighted with a line highlight.

• manips.c++:
  A simple program which demonstrates the Trackball and HandleBox manipulators.

• pickTrackball.c++ (also uses createPaths.h):
  Manipulator attachment example: the scene graph has an SoWrapperKit, a cube and a sphere. A file containing a luxo lamp is read in as the 'contents' part of the SoWrapperKit.

  When the user picks on the SoWrapperKit (lamp), the kit's "transform" part is replaced with an SoTransformBoxManip. Alternatively, when the user picks the sphere, the sphere's associated transform is replaced by an SoHandleBoxManip. Picking the cube causes an SoTrackballManip to replace the cube's transform.

  Manipulator callbacks are used to change the color of the object being manipulated.

  Note that for illustration purposes, the cube and SoWrapperKit already have transform nodes associated with them; the sphere does not. In all cases, the routine createTransformPath() is used to find the transform node that affects the picked object.

  (This is excerpted from the Inventor Mentor, volume 1, chapter 15, example 3.)

• select.c++:
  Selection program. Reads a file in, then allows objects in the scene to be selected using a selection node.

• selection.c++:
  The scene graph has a cube and a sphere. A selection node is place at the top of the scene graph. When an object is selected, a selection callback is called to change the material color of that object.

• walk1.c++:
  SOLUTION: Inventor Barcelona Lab #1

  This program illustrates a simple Inventor program which reads in an Inventor file and views it with the `Walkthrough viewer'.

  EXERCISE::

  • Change the input file to be another file: /usr/share/data/models/*
  • Change the Viewer to be a different viewer:
    • SoExaminerViewer
    • SoFlyViewer
    • SoPlaneViewer

• walk2.c++:
  SOLUTION: Inventor Barcelona Lab #2

  This program illustrates a simple Inventor program which reads in an Inventor file and views it with the `Walkthrough viewer'. If the `Table' is picked then play some audio...

  EXERCISE:

  • Modify the program so that picking the `Lamp' causes ./sounds/lampON.aiff and ./sounds/lampOFF.aiff to play. Alternate these two sounds each time.

    (Hint: you will need to create a boolean flag for the lamp status...)

• walk3.c++:
  SOLUTION: Inventor Barcelona Lab #3

  This program illustrates a simple Inventor program which reads in an Inventor file and views it with the `Walkthrough viewer'.
  If the `Table' is picked then play some audio...
  If the `lamp' is picked then play some audio...

  EXERCISE:

  • Turn the `LampSwitch' on/off each time the `Lamp' is picked.

    Hint: Find the named object `LampSwitch' in the file...

• walk4.c++:
  SOLUTION: Inventor Barcelona Lab #4

  This program illustrates a simple Inventor program which reads in an Inventor file and views it with the `Walkthrough viewer'. If the `lamp' is picked then play some audio and turn the light on/off...

  EXERCISE:

  • When the `Table' is picked, spin the `Lamp' about the center of the table.

    Hint: Find the SoRotor `TableRotor' in scene.iv and turn it on when the table is picked...