Abstract: Disclosed is an illumination device for illuminating a surgical wound, which has a wound opening area and a depth extension direction, the illumination device including a control device for inputting information about a position of the wound opening area and the depth extension direction, and a plurality of lighting devices where at least one of the lighting devices emits light such that an illuminated area at least partially overlapping with the wound opening area and where the lighting devices are arranged in the array in a substantially unchangeable position.

Abstract: The present invention relates to a process and a device for the collision detection of objects by traversal of hierarcichal binary bounding BoxTrees, in which each bounding box pair of a hierarchically lower level is derived from a bounding box from the immediately above level by means of cutting off two sub-volumes by means of two parallel cut-planes. For the collision detection of a first and a second object, for each second bounding box of the bounding BoxTree of the second object to be checked for overlapping with a first bounding box of the bounding BoxTree of the first object, an auxiliary bounding box is computed which is axis-aligned in the object coordinate system of the first object and encloses the second bounding box with minimal volume, and with which the overlap check is conducted instead of with the second bounding box, and the computation results from the level immediately above are utilized for computation of auxiliary bounding boxes of lower levels.

Abstract: The present invention relates to a process and a device for the collision detection of objects by traversal of hierarcichal binary bounding BoxTrees, in which each bounding box pair of a hierarchically lower level is derived from a bounding box from the immediately above level by means of cutting off two sub-volumes by means of two parallel cut-planes. For the collision detection of a first and a second object, for each second bounding box of the bounding BoxTree of the second object to be checked for overlapping with a first bounding box of the bounding BoxTree of the first object, an auxiliary bounding box is computed which is axis-aligned in the object coordinate system of the first object and encloses the second bounding box with minimal volume, and with which the overlap check is conducted instead of with the second bounding box, and the computation results from the level immediately above are utilized for computation of auxiliary bounding boxes of lower levels.