4.3 Lengthening and shortening lines

The lengthen menu

The lengthen menu contains functions for lengthening and shortening lines at the ends (linear) or through alteration of the shape (forming).

T hese functions are especially significant for the adjustment of line lengths such as side seams, body seams and crotch seams.

Step-by-step guide

• Activate the required type of length alteration (linear or forming)

• Enter the value for the alteration under lengthen by or lengthen to

• Activate lengthen by or lengthen to

Click the line to be altered (with linear the right principle is to be followed).

Types of length alteration

There are two different options available for lengthening/shortening lines:

With linear the line is lengthened straight at its end or shortened along the line. The end of the line is determined according to the right principle when clicking.

With forming starting point and final point are fixed. The line is shaped to attain the pre-set length. forming does not apply to straight lines.

4.4 Cut and separate lines

Cutting and separating lines can be called from the basic menu via separate.

The separate/cut position can be determined in three different ways.

Step-by-step guide

Separate or cut at a cutting line

• Define/construct a cutting line with click or p+digi

• Activate separate or cut

• Adjust +/-cut mark

• Click lines to be separated or cut.

Separate in a corner

• Activate separate in corner

• Adjust +/-cut mark

• Click the corner in which the lines are to be separated outside

Separate or cut with click line (“freehand" by eye)

• Activate click line / separate or click line / cut

• Adjust +/-cut mark

• Click the line

Self assessment questions

1. How to make linking lines?

2. What characteristics of raster function?

3. How to shortening lines?

4. How to lengthening lines?

5. How to cut and separate lines?

Reference:

©Friedrich: Grafis – Textbook Part 1, Edition 2008, Chapter 5, 2-14p.p.

Lecture 5

Point, line and direction construction.

5.1 Line construction in conjunction with the sub-menu point construction

5.2 Point constructions

5.3 Line constructions

5.4 Line with direction constructions

5.5 Circle arcs

5.6 Rectangles

5.1 Line construction in conjunction with the sub-menu point construction

Grafis works with the construction objects point and line. For the construction of these objects, the sub-menus point and direction construction are of particular significance. The sub-menu point construction is explained in the following using the ex-ample of line construction with p=>p.

It is not necessary to attach the line to existing point objects! The position of starting and final point of the line is determined with the point construction sub-menu.

5.2 Point constructions

The p+l+c+r menu

The p+l+c+r menu contains construction tools for points, lines, circle arcs, rectangles and can be called from the basic menu, directly. The p+l+c+r menu contains five options for the construction of a single new point.

5.3 Line constructions

p ==>p - line between two points

1. p+l+c+r

2. activate p==>p

3. construct the first point

4. construct the second point p==>p constructs a line be-tween two points. Having called p=>p, the sub-menu point construction opens for the construction of starting and final point.

Horizontal and vertical lines with p==>px and p==>py

• activate the function p==>px or p==>py

• construct the starting point of the line

• determine auxiliary point for calculation of the final point

Line out of base point and freehand direction with p+digi

• activate the function p+digi

• construct the starting point

• determine the final point freehand

Tangent to a line with tang.p=>l

• activate the function tang.p=>l

• construct the starting point

• click the line to which the tangent is to be cre-ated

Perpendicular onto a line with perp.p=>l

• activate the function perp.p=>l

• construct the starting point

• click the line onto which the perpendicular is to be dropped