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3.4.2 Description of the input data

This mesh generator requires all the information defining the 3 point distributions as input data.

The efficiency of the method results from the numerous possibilities offered to define the vertex coordinates. A vertex being known via its three indices i, j, k, it suffices to input the following data, in accordance to the case under consideration (see lower down):

• Elements with constant step in one, two or three directions: the step(s) correspond(s) to the spacing of the points in this/these direction(s);
• Elements with variable step in one or several directions: the corresponding steps in the form of a table;
• Arbitrary elements: the point positions in the form of an array or functions;
• Mixed elements: an adequate combination of steps, arrays or useful functions.

The face, edge and point references of the mesh created are defined from their position (indices i, j, k), in the same way as the sub-domain numbers of the elements created (see further down).