4 results about "Collision detection" patented technology

The invention provides a detection method for data collision in a processing data task, and servers, wherein one method is applied in a message center server. The method comprises: responding to a first lock request list which is sent by a processing data server and has a current structured query language SQL script, generating a second lock request list; according to a preset collision detection rule and the second lock request list, detecting whether a current instance and other instances generated by other SQL scripts are conflicted in execution. In the method, through introducing the second lock request list and establishing a heartbeat mechanism with the instances as a unit and a message notification mechanism of lock collision, the number of lock requests is effectively reduced, access pressure caused by a lock mechanism is reduced, and lock request response is improved. The method can also provide convenience for users to check which instances generated by SQL have execution collision with the instance generated by an own SQL.

The invention discloses a dynamic collision detection method for the transportation process of an internal air duct of an ocean platform, which comprises the following steps: fixing an air duct and transportation equipment into a transportation body, respectively creating bounding boxes for the transportation body and an ocean platform, and controlling the transportation body bounding box to move in an ocean platform bounding box, In the moving process, whether the boundary curve of the transport body bounding box intersects with the boundary curve of the ocean platform bounding box or not is calculated, If yes, the moving curve equation is modified until a non-intersecting moving curve equation is obtained. The air duct transportation efficiency can be improved, the air duct transportation safety is guaranteed, and the adaptability to the complex environment of the ocean platform is improved.

The invention discloses a three-dimensional model collision detection method based on an interface mark, and the method comprises the steps that a use selects one or more building blocks and enables the building block to move and be placed freely on a bottom plate in 3D building block virtual building software, and carries out the jointing of the building block with other building blocks, therebyforming an unique 3D model or scene; a 3D building block collision detection method based on an interface mark is employed in the building block moving and jointing process for judging whether the building block collides with other building blocks or not, thereby determining whether the selected building block can be placed or jointed with other building blocks or not. If the building block collides with other building blocks, the building block cannot be placed at the position or jointed with other building blocks. The method can adapt to 3D building block models in different shapes, employsa method for manual marking of a collision detection interface for replacing a grid collision device which is carried by a building block 3D model, is smaller in calculation resource waste, and is more flexible and precise in collision detection.