Abstract: A computer-implemented method of designing a modeled assembly of at least one object in a computer-aided design system, the method comprising the steps of providing a set of icons, each icon being representative of a range of scales of size; determining the dimensions of a view (40) of said modeled assembly; and displaying continuously the icon representative of the range of scales of size corresponding to said dimensions.

Abstract: It is provided a computer-implemented method for creating a surface from a plurality of 3D curves. The method comprises providing a plurality of 3D curves, determining crossings between pairs of the curves, defining a base graph comprising nodes representing the crossings and arcs connecting pairs of nodes representing crossings that are neighbors, determining, from the graph, a mesh comprising vertices defined by a 3D position and edges connecting pairs of the vertices, and fitting the mesh with a surface. Such a method makes the creation of a surface from a plurality of 3D curves easier.

Abstract: The invention relates to a computer-implemented method for compressing numerical data comprising a structured set of floating point actual values. A floating point value is defined by a sign, an exponent and a mantissa. The method comprises computing a floating point predicted value related to a target actual value of the set. The computing includes performing operations on integers corresponding to the sign, to the exponent and/or to the mantissa of actual values of a subset of the set. The method also comprises storing a bit sequence representative of a difference between integers derived from the target actual value and the predicted value. Such a method is particularly efficient for reducing the storage size of a CAD file.

Abstract: It is provided a computer-implemented method for simulating the machining of a workpiece with a cutting tool having a cutting part and a non-cutting part. The method comprises providing a modeled volume representing the workpiece and a trajectory of the cutting tool; determining a colliding sweep of the cutting tool, wherein the colliding sweep represents the volume swept by the non-cutting front of the cutting tool when the cutting tool follows the trajectory; testing a collision with the workpiece according to the determining step. Such a method improves the simulation of the machining of a workpiece with a cutting tool.

Abstract: It is provided a computer-implemented method for designing a modeled volume. The method comprises providing a set of dexels that represents the modeled volume, each dexel comprising a set of at least one segment representing the intersection between a line and the modeled volume, wherein the set of dexels is partitioned into groups of neighboring dexels, and wherein a memory space depending on the maximum number of segments comprised in each of the dexels of the group is allocated to each group; providing a sculpting operation on the modeled volume; and updating the set of dexels in response to the sculpting operation. Such a method improves the design of a modeled volume represented by a set of dexels.