T-FLEX Parametric CAD. Fundamentals. 2D Design

Fundamentals. Two-Dimensional Design
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Note: the options and only are available for editing the contours defined automatically
with the option , constructed on top of 2D projections or as a copy of an existing hatch.
When editing a contour, the following actions are supported: node deletion, node addition and redefinition of
the type of lines connecting the nodes. Besides, one can change the contour direction, move the start point
back and forth, link arc segments of a contour to nodes.
Flipping contour direction to the opposite
The contour direction is an important hatch property when creating 3D elements. This parameter is inherited
by the 3D profiles created based on hatches. For example, the 3D operation “Loft” matches profiles by the
start points of the respective contours and requires matching of contour directions as well.
To change the direction of a 3D profile constructed based on a hatch, you need to change the hatch contour
direction.
The contour direction is shown by the arrow displayed upon selecting the contour. This arrow also indicates
the start point of the contour.
The following steps are to be done in order to change a hatch contour direction:
- Call the command “EH: Edit Hatch”;
- Select a hatch for editing;
- Turn on the contour editing mode (the icon or key);
- Select the contour (point the graphic cursor at and click );
- Flip the contour direction (the icon or key);
- Confirm changes by the icon or key.
Moving around contour start
The contour start is the first node selected during the manual hatch contour input.
If the contour is defined automatically or without node selection (as by a full circle), the start point is defined
automatically.
The start point placement and contour direction (see above) can only be changed for the contours defined
manually.
To move the contour start point, do the following steps:
- Call the command “EH: Edit Hatch”;
- Select a hatch for editing;
- Turn on the contour editing mode (the icon or key);
- Select the contour (point at it with the graphic cursor and click );
- Move the start point forward (the icon or key) or backward (the icon or key);
- Confirm changes by the icon or the key.