#### 2.1.5.1. Rosette Definition

Each Rosette is defined by an origin and two vectors. Enter the origin by clicking on an element or a node, or by typing the coordinates. When selecting an element, the coordinates of the center of the element are used.

If a direction field is selected in the dialog, the selection of an element returns the normal direction of the element. By pushing down the CTRL key and clicking on a second element, you can select the direction defined by the two element centers.

If the two directions are not orthogonal, the orientation buttons at the bottom of the Rosette Properties dialog can be used to create an orthogonal Rosette definition. Direction 1 translates to the X direction of the Rosette and Direction 2 translates to its Y direction. The buttons are able to adjust the two directions by keeping one constant and rotating the other in-plane so that they are perpendicular to each other. The capital letter on each button denotes which direction is kept constant while the other direction is adjusted. The third vector is directly calculated from the two first directions. For example, when you press the yZ button, the direction of the vector Z stays as it is; the vector Y remains in the plane defined by the two directions (Y and Z) but is adjusted to be orthogonal to the vector Z. The X vector is calculated from the Y and Z vectors.

Caution: After the operation, Direction 1 and Direction 2 are changed with the values of the vectors X and Y respectively.

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