Method for defining a laser tool path

A method for defining a sequence of positions of a laser head relative to a part, for a machining by a laser ray of a texture etched on a two-dimensional or a three-dimensional surface of the part modeled by a 3D meshing, the method comprising:

• defining a plurality of machining layers to be performed in successions;
• defining for each one of the plurality of machining layers patches to be each machined from a single position of the laser head, the patches including closed patches, the boundary of which is not affected by the laser ray;
• validating the closed patches successively from a first machining layer to a second machining layer of the plurality of machining layers;
• defining open patches whose boundary is affected by the laser ray for any areas of the plurality of machining layers that cannot be machined from validated closed patches;
• wherein the defining of the patches includes associating an origin direction with each one of the defined closed patches;
• and
• wherein the validating of the closed patches includes assigning a maximum angulation between the origin direction and a normal to elements of the 3D meshing supporting the closed patches.