Visualizing a LP3 Result

This page shows how to use a LP3 result generated from a direct simulation. LP3 files appear only when using light expert in a simulation that contains 3D sensors.

Note: If you need more information on the Light Expert tool, see Light Expert.

To visualize a LP3 Result:

  1. From Speos tree, double-click the .lp3 file.
    Virtual 3D Photometric Lab loads the XM3 result. The Light Expert panel is displayed.

    Note: When you open Virtual 3D Photometric Lab from Speos, Virtual 3D Photometric Lab inherits the default navigation commands from SpaceClaim.
    The navigation commands are:
    • spin: middle mouse button
    • spin + center definition: middle mouse button when clicking on the mesh
    • pan: SHIFT + middle mouse button
    • zoom: CTRL + middle mouse button
  2. From the Faces filtering drop-down list:
    • Select And to display rays that have at least one intersection with each selected faces.
    • Select Or to display rays that have at least one intersection with one of the selected faces.
  3. Define the Ray number to be displayed in the 3D view.
  4. In Ray length, set a value to define the ray length preview.
  5. In Virtual 3D Photometric Lab, click Tools > Measure
    Extended map Extended map with measure tool
  6. Modify the measure area, shape or position on the map to update the ray tracing preview in the 3D view.
    The ray tracing of the 3D view is adjusted in real-time to illustrate the light path from the sources to the sensor.
  7. If you want to filter the rays displayed in the 3D view:

    • Click and select the Required faces (the faces that are taken into account to filter rays).

      The rays impacting the required faces and reaching the sensor are displayed in the 3D view.

    • Click and select the Rejected faces (the faces that you want to exclude from the light trajectory).

      The rays reaching the sensor, excepted those impacting the rejected faces are displayed in the 3D view.

  8. If you want to better visualize rays paths:
    1. Click Section mode .
      The Section mode appears in the 3D view and you can move it thanks to the 3D Manipulator to modify its position and orientation therefore cutting the geometry and see the rays paths.
    2. If the 3D Manipulator is not enough discernible, in the Section mode section, with the Rotation handles distance from center parameter you can modify the distance of the rotation manipulators to the center of the 3D Manipulator.