The cuttings carried out on the lines of folding are controlled by the entity ''Sketch block''. It is possible to create and personalize its own blocks by observing two conditions:
- The insertion point must correspond to the point taken for positioning at the end of the line of folding.
- To comprise one, and only one, line of construction which will make it possible to direct the block compared to the line of folding.
Creation of a polygonal form of 2mm.
At the time of positioning, the tool MarkFoldLines analysis the lines of folding and puts two constraints to position the sketch block:
- 1st constraint:
- A parallel constraint enters the line of construction and the line of folding.
- 2nd constraint:
- If the line of folding is inside sheet (for example case of the folds with tear), a constraint of coincidence between the insertion point of the block and the end of the line of folding is put.
- If the line of folding coincides with the edge of sheet, a constraint of intersection is put between the insertion point of the block and the edge.