JP5414675B2 - Knit design method, knit design apparatus and design program - Google Patents

Description

  The present invention relates to the design of knitted products, and in particular to the design of reduction and increase lines.

  In the design of a knitted product, a reduction line, that is, a line for gradually decreasing the knitting width, and an increase line, that is, a line for gradually increasing the knitting width are required. For example, since the knitting width gradually decreases at arm holes, neck holes, etc., a reduction line for reducing the stitches as faithfully as possible becomes necessary. Also, when the knitting width is gradually increased with the body and sleeves, an additional line is required along the design data.

  A conventional example will be described taking a reduction line as an example. In the conventional knit design, the J curve or S curve shown in FIG. 12 is used. First, the outline line on the design is divided into a plurality of line segments, and the inclination of each line segment is obtained. In the J curve, the line segments are arranged in the order from the line segment with the small inclination to the large line segment, and in the S curve, the line segments are arranged in the order from the line segment with the large inclination to the small line segment. In the J curve and the S curve, the reduction is executed along the slope of the line segment, so the reduction is not necessarily executed regularly. In addition, it is efficient in knitting to reduce by 2 stitches, but depending on the slope of the line segment, it is reduced by 1 stitch. As a result, the knitting efficiency becomes low, and the fashion line consisting of the reduced number of rows becomes irregular. Furthermore, the J curve tends to be smaller than the design, and the S curve tends to be larger than the design. The same applies to the increase.

An object of the present invention is to generate a reduction line and an increase line that are relatively faithful to the design, have high knitting efficiency, and easily obtain a regular fashion line.
An additional problem with the present invention is to create as smooth and reduced lines as possible.
Another additional problem of the present invention is to eliminate the need to manually input the boundary of the section when the external shape of the design is changed.

The present invention relates to a method for converting the outer shape of a knitted fabric specified by design data into a reduced line or an increased line by reducing or increasing stitches in order to create knitting data executable by a flat knitting machine.
Inclination calculating step for dividing the outer shape into a plurality of sections and determining the inclination of the outer shape for each section ;
A predetermined number of stitches are regularly reduced or increased for each even number of courses, and one or two straight line segments are associated with each section with a slope close to the slope of each section of the outer shape. A line generation step for generating,
The length of each line segment so that the total number of courses of the line segments matches the number of courses determined from the outline, and the total number of reductions or increases matches the number of reductions or increases determined from the outlines. A line segment length determination step for determining
A line segment arranging step for generating a reduced line or an increased line by arranging corresponding line segments for each section and connecting adjacent line segments to each other is provided. .

The present invention also provides an apparatus for converting the outer shape of the knitted fabric specified by the design data into a reduced line or an increased line by reducing or increasing the stitches in order to create knitting data executable by the flat knitting machine. In
Inclination calculating means for dividing the outer shape into a plurality of sections and determining the inclination of the outer shape for each section ;
A predetermined number of stitches are regularly reduced or increased for each even number of courses, and one or two straight line segments are associated with each section with a slope close to the slope of each section of the outer shape. A line generation means for generating;
The length of each line segment so that the total number of courses of the line segments matches the number of courses determined from the outline, and the total number of reductions or increases matches the number of reductions or increases determined from the outlines. A line segment length determining means for determining
Line segments corresponding to each section are arranged, and adjacent line segments are connected to each other, thereby providing line segment arrangement means for generating reduced or increased lines. .

The present invention further provides a knit for converting the outer shape of the knitted fabric designated by the design data into a reduced line or an increased line by reducing or increasing the stitches in order to create knitting data executable by the flat knitting machine. In a program for design equipment,
The knit design device,
Inclination calculating means for dividing the outer shape into a plurality of sections and determining the inclination of the outer shape for each section ;
A predetermined number of stitches are regularly reduced or increased for each even number of courses, and one or two straight line segments are associated with each section with a slope close to the slope of each section of the outer shape. A line generation means for generating;
The length of each line segment so that the total number of courses of the line segments matches the number of courses determined from the outline, and the total number of reductions or increases matches the number of reductions or increases determined from the outlines. A line segment length determining means for determining
In the knit design program, a corresponding line segment is arranged for each section, and adjacent line segments are connected to each other to function as a line segment arrangement means for generating a reduced line or an increased line. .

In the present invention, each section is approximated by one or two line segments, and the line segments are arranged in each section. And since the line segment is not moved beyond the section, a reduction line and an increase line that are relatively faithful to the outline in the design data can be obtained.
Each line segment is reduced or increased by a predetermined number of eyes for each predetermined course, so the reduction or increase is performed regularly and is efficient, and the reduction or increase is a regular fashion line. .

In this specification, the description regarding the knit design method also applies to the knit design apparatus and the knit design program as it is, and the description regarding the knit design apparatus also applies to the knit design method and the knit design program as they are.
Each step in this specification can be executed even if the order is changed from the embodiment unless otherwise noted or there is a natural order.

Preferably, when two line segments having different inclinations are associated with one section, a line segment having a relatively small inclination difference from a line segment in an adjacent section is represented by a line having a relatively large inclination difference. The line segments are connected in the line segment arranging step so as to connect with priority over the minutes. As a result, the line segments are connected relatively smoothly at the boundaries of the sections.

  Preferably, in the inclination calculating step, the outer shape is divided into a plurality of sections by control points of a free curve representing the outer shape. Thus, the section can be automatically generated, and the control point representing the feature of the outer shape is set as the boundary of the section, so that the section can be divided into the sections according to the feature of the outer shape.

Instead of first obtaining a section, in the slope calculation step, a straight line portion is extracted from the outer shape as the section,
In the line segment length determination step, the line segment of the adjacent section may be extended with respect to the gap between the sections, or a new section may be generated in the gap.
In this way, it is possible to automatically generate a section so that the straight portion of the outer shape is a section and the straight section is extended to the gap or the gap is a new section. Since the section is generated based on the straight line portion, the section corresponds to the outer shape.

  Preferably, in the inclination calculation step, a relative position of the control point with respect to the outer shape is stored, and when the outer shape is changed, a section for the changed outer shape is generated based on the stored relative position. If it does in this way, if an external shape is changed, a new area can be produced | generated automatically. The relative position is, for example, the number of the course where the boundary is located with respect to the total number of courses in the reduced line along the course direction.

  Particularly preferably, when reducing lines are generated, the stitches are reduced by two stitches for every even number of courses in the line segment generating step. In this way, reduction can be performed particularly efficiently. In the case of increase, it is preferable to increase stitches by one for every even number of courses.

Block diagram of the knit design device of the embodiment The flowchart which shows the production | generation algorithm of the reduction line in an Example The flowchart which shows the production | generation algorithm of the increase line in an Example The figure which shows the production | generation of the reduction line in an Example The figure which shows the reduction line produced | generated in FIG. Diagram showing outline line after design change The figure which shows the reduction line corresponding to FIG. The flowchart which shows the production | generation algorithm of the reduction line in a modification The flowchart which shows the production | generation algorithm of the increase line in a modification The figure which shows the production | generation of the reduction line in a modification The figure which shows the production | generation of the reduction | decrease line in a modification in the outline line which has the area where a straight line approximation is difficult The figure which shows the production method of the reduction line in the conventional example Diagram showing design image The figure which shows the reduction line in the conventional example with respect to the design picture of Figure 13 (1 eye / course reduction) The figure which shows the reduction line in the conventional example with respect to the design picture of Figure 13 (reduction of 2 eyes / course) The figure which shows the reduction line in the example with respect to the design image of FIG. 13 (reduction for every course by the reduction of 2nd / course) The figure shows a reduction line. A) shows a design image, b) shows a conventional example with 1 eye / course reduction, c) shows a conventional example with 2 eyes / course reduction, d) shows 2 eyes. / An example of reducing the number of courses for every even number of courses

  In the following, an optimum embodiment for carrying out the present invention will be shown.

  1 to 17 show an embodiment and its modifications. In each figure, 2 is a knit design device and 4 is a bus. 6 is a keyboard, and 8 is a mouse. In addition, manual input means such as a joystick, a trackball, and a stylus may be provided. A color monitor 10 and a disk drive 12 exchange data with a disk such as a CD-ROM, and can also be connected to a USB or the like. Reference numeral 16 is a color printer, and 18 is a memory. The knit design apparatus 2 is a computer that includes a CPU and a ROM (not shown).

  A knit design unit 20 designs a knit product according to inputs from the mouse 8, the keyboard 6, the disk drive 12, the LAN interface 14, and the like. The Bezier curve generation unit 22 processes the outer shape of the part of the knit product as a free curve such as a Bezier curve. A β-spline curve or the like may be used instead of the Bezier curve, and the type of these free curves is arbitrary. For the part of the knit product designed by the knit design unit 20, the Bezier curve generation unit 22 converts the outline into a Bezier curve. A free curve such as a Bezier curve generally has a plurality of control points.

  The reduction / increase line generation unit 24 generates a reduction line or an increase line with respect to an outline of a part. The reduction line is an outline when knitting while reducing the knitting width of parts, and the increase line is an outline when knitting while increasing the knitting width of knitting parts. The reduction line and the increase line generated by the line generation unit 24 are lines that regularly reduce and increase for each predetermined course by a predetermined number of lines. In the case of a reduction line, for example, the number of increase lines is reduced by two. In this case, for example, increase by one eye.

  In the reduction line and increase line, the total number of courses determined by the design of the knit product is reduced or increased by the number of eyes determined from the design. It is preferable that the reduction line and the increase line coincide with the outer shape determined from the design of the knit product as much as possible. Furthermore, it is important that the reduction eyes and the increase eyes appear regularly, and the reduction eyes and the increase eyes form a fashion line. Further, it is preferable to make the knitting easy by performing reduction or increase for every even course, and in the case of reduction, it is preferable to make the knitting efficient by reducing two stitches at a time.

  The section dividing unit 26 divides the outer shape of the part into a plurality of sections in order to generate a reduction line and an increase line. The section is divided by using, for example, a control point of a Bezier curve as a boundary. The straight line approximation unit 28 approximates the inside of the divided section by one or two line segments, and these line segments are, for example, reduced by two for every even course or increased by one for every even course. The line segment that was followed. The slope in each section is, for example, reduced by 2 for every 5 courses, and may not match the preferred condition, such as reducing by 2 for every 4 courses or reducing by 2 for every 6 courses. Therefore, for example, a section that is reduced by 2 for every 5 courses is approximated by a line segment that is reduced by 2 for every 4 courses and a line segment that is reduced by 2 for every 6 courses. One section can be approximated by two types or one type of line segment.

  If the slope of the line segment is the same at the boundary between the sections, the sections are smoothly connected. Therefore, when there are two types of line segments in one section, the arrangement of the two types of line segments is determined so that the slopes of the line segments are smoothly connected to the left and right sections. For example, it is assumed that a line segment that reduces by 2 lines every 4 courses and a line segment that decreases by 2 lines every 6 courses are assigned to a certain section. If the left section consists of a line segment that decreases by 2 every 4 courses, and the right section consists of a line segment that decreases by 2 every 6 courses, the line segments are arranged from left to right in every 4 courses. The second and fourth courses, the second for every six courses, and the second for every six courses are connected in a smooth manner. That is, the two line segments are arranged so that the difference in inclination between the line segments in the left and right sections becomes small.

  In the embodiment, the reduced line and the increased line are first divided into sections. In the modified example, a straight line approximation is performed on the reduced line and the increased line, and a section is generated in this process. In this case, the section dividing unit 26 is not necessary.

  The data conversion unit 30 converts the design of the knit product into knitting data 34 that can be knitted by a flat knitting machine (not shown). The memory 18 also stores a design program 32 for causing the knit design device 2 to generate a reduction line or an increase line. The program 32 may be input from the LAN interface 14 or the disk drive 12 and stored in a storage medium such as a CD-ROM, or may be input from the LAN interface 14 via a carrier wave from the Internet or the like.

  2 to 7 show processing in the embodiment. The front body 40 to be processed is shown in FIG. 4, 41 is an armhole reduction line, 42 is a neckhole reduction line, and the armhole reduction line 41 will be described as an example here, but the same applies to the neckhole reduction line 42. Perform the process. In this specification, the lateral direction of the knitted fabric is the x direction, that is, the wale direction, and the longitudinal direction is the y direction, that is, the course direction. The stitches are formed while a carriage (not shown) moves along the wale direction. The stitches are lined up and down along the course direction, and the stitches are knitted in order from the area where the value of y is small to the large area.

  FIG. 2 shows an algorithm for generating a reduced line. In step 1, with respect to the outline based on the design of the knitted product, the reduced line is divided into a plurality of sections by using control points on the Bezier curve generated by the Bezier curve generator 22. Divide into In the case of FIG. 4, the control points a to e on the Bezier curve are used to divide into sections I to IV, and the boundaries of the sections are the control points a to e. The number of reduction points included in the sections I to IV is set to an even number, and when the number is an odd number, the boundaries b, c, and d are moved. Also, in preparation for a change in the outer shape, the relative position of the boundary with respect to the reduced line is stored (step 2). In the embodiment, a coordinate system in units of one eye is used along the wale direction and the course direction, and for example, the coordinates of the boundaries b, c, and d along the course direction are stored.

  For each section, the slope, that is, the ratio between the number of courses in the section and the number of eyes to be reduced is calculated (step 3). For example, when the number of reduction eyes is 10 with respect to 30 courses, the second reduction should be performed every 6 courses, and the section can be approximated by one line segment. In such a case, the process of step 4 is performed. However, in general, since the slope of the section is not such a simple one, the section is approximated by two types of slope segments sandwiching the average slope of the section (step 5). Further, two types of line segments are arranged so that the slopes of the adjacent segments and the line segments coincide as much as possible (step 6).

  These processes are shown in FIG. For example, in section I, the number of reductions is 36 with respect to 46 courses, and when the number of courses is reduced by 2 each, 18 reductions are required. In section I, 18 courses are reduced by 46 courses, so it is only necessary to make one reduction for about 2.5 courses on average. Assuming that the number of times of reduction is a, 2a + 4 (18−a) = 46 holds. If both sides of the 2.5 course / reduction are reduced by 2 for every even number of courses, there will be a 2nd reduction for every 2 courses and a 2nd reduction for every 4 courses. Therefore, the number of times the second reduction is performed every 2 courses is a, and when the above formula is solved, a becomes 13. Therefore, the 2nd reduction every 2 courses is 13 times, and the 2nd reduction every 4 courses is 5 times. Run. As a result, the section I can be approximated by two line segments.

Sections II and III have the same average slope, and it is only necessary to reduce the second by 10 times during 46 courses. Therefore, since the second reduction is performed every 4.6 times, the second reduction every 4 courses is executed a times, and the second reduction every 6 courses is executed 10-a times. On the other hand, since 4a + 6 (10−a) = 46 holds, a is 7 times. In Section IV, the 26th reduction is performed during 46 courses, so it is better to execute the second reduction every 3.54 courses. If the number of times to reduce the second eye every 2 courses is a, and the number of times to reduce the second eye every 4 courses is 13-a times,
Since 2a + 4 (13−a) = 46, a is 3 times.

  In FIG. 4, the sections I to IV are approximated by two types of line segments, and are therefore connected smoothly. For this purpose, at the beginning of the section I, a line segment with a two-line reduction is arranged every two courses, and then a line segment with a two-line reduction is arranged every four courses. The first part of Section II will also be reduced by 2 every 4 courses, 2 by 6 every 6 courses in the second half of Section II, and 2 every 6 courses in the first half of Section III. In the second half of Section III, the number of courses will be reduced by 2 every 4 courses. In the first half of Section IV, the number will be reduced by 2 places every 4 courses. The circles in FIG. 5 are points where line segments are changed within each section.

  In sections I and IV, the 2nd reduction every 2 courses and the 2nd reduction every 4th course are combined. For example, the 2nd reduction every 2 courses and the 2nd reduction every 6 courses may be combined. . The reason why the reduction is executed every even course is that the next reduction is executed when the carriage is reciprocated so that the arrangement of the carriage and the like is almost the same as the original. This is intended to increase the efficiency of the knitting, and does not necessarily exclude, for example, the reduction of the second stitch every three courses. In addition, reducing the number of stitches by one at a time is aimed at improving the efficiency of the knitting, and in an extreme case, it is not excluded to reduce the stitches every three courses.

  FIG. 6 and FIG. 7 show the processing when changing the outer shape. In step 2 of FIG. 2, the relative position of the boundary of the section with respect to the reduced line is stored. In the case of FIG. 4, the boundary appears every 46 courses. Assume that the armhole reduction line is changed as shown in FIG. Here, the total number of reduced eyes is 76, and the total number of courses is 220. As the external shape is changed, the number of courses in each section is not common. Thus, when two types of line segments that approximate the sections I to IV are generated in the same manner as in FIGS. 4 and 5, the result of FIG. 7 is obtained. Note that a ′ to e ′ in FIG. 6 are points where the original boundaries a to e are moved by deformation. 6 and 7, it is assumed that the outer shape is changed by moving the control point.

  In the case of grading or the like, the outer shape is changed by reducing or enlarging the outer shape in a similar manner. Therefore, if the relative position of the boundary line with respect to the reduced line is stored in step 2 of FIG. 2, it is not necessary to input a new boundary when the outer shape is changed. For example, in FIG. 4, the boundaries b, c, d are reduced and the lines are divided into four equal parts. Therefore, the boundaries b ′, c ′, d ′ are generated so that the reduced lines after grading are divided into four equal parts.

  In the embodiment, the reduction has been described, but the same applies to the increase. The increasing algorithm is shown in FIG. In the same step as in FIG. 2, the content of the process is substantially the same only by changing the reduction to the increase. In step 11, the increase line is divided into a plurality of sections by the control points of the Bezier curve for the increase line. Then, the relative position of the boundary of the section with respect to the increased line is stored (step 2). Next, the slope of each section is calculated (step 3), and if there is a section in which an increased line can be approximated by one line segment increased by one pitch for every even course (step 4). A section that cannot be approximated by one line segment is approximated by two line segments by a method similar to that shown in FIGS. 4 and 5, for example (step 5). Then, the generated two line segments are arranged so as to be smoothly connected to the adjacent section (step 6). If there is a change in the outer shape, the same processing as in FIGS. 6 and 7 is executed.

In the modified example , the section was first set and the slope of the section was obtained. On the other hand, a straight line portion having a substantially constant inclination in the outer shape line is extracted as a section, and the extracted section is approximated by one or two types of line segments. Next, the left and right line segments are extended with respect to the gap between the sections, or the gap is set as a new section. When the gap is processed, a constraint condition is added that the total number of reduction eyes or the total number of increase eyes matches the data on the design, and the total number of courses of the reduction lines and the increase lines matches the design data. Even in this case, a reduction line or an increase line can be generated. Such modifications are shown in FIGS.

  In step 21 in FIG. 8, the straight line section in the outline line is approximated by one or two line segments, which are reduced by two pitches for each even course. In step 22, the left and right line segments are applied to the gap between the sections, or the gap is regarded as a new section and approximated by one line segment. In step 23, the total number of reduction eyes and the target are checked, and if they do not match, the fitting of the line segment to the gap between the sections is changed. FIG. 9 shows an example of generation of an increase line. Steps 22 and 23 are the same as those in FIG. 8, and in step 31, the straight line section in the outline line is increased by one for every even course, one or two lines. Approximate in minutes. In FIG. 9, when the number of increments does not match the target, step 22 and step 23 are re-executed.

  The design of FIG. 10 is the same as that shown in FIG. The left side of FIG. 10 shows the inclination when the second course is reduced every 2 courses, the inclination when the 2 courses are reduced every 4 courses, and the inclination when the 2 courses are reduced every 6 courses. It can be approximated by a line segment that reduces by 2 lines per course. The section h-i can be approximated by two types of line segments that are reduced by 2 lines every 4 courses and line segments that are reduced by 2 lines every 6 courses. The section i-j is approximated by two types of line segments, a line segment that is reduced by 2 lines every 2 courses and a line segment that is reduced by 2 lines every 4 courses. Similarly, the section f-g is also approximated by two types of line segments that are reduced by 2 lines every 2 courses and line segments that are reduced by 2 lines every 4 courses.

  These line segments are arranged so that the slopes of the line segments substantially coincide with each other at the section boundaries. That is, in the section f-g, a line segment that is reduced by 2 lines every 2 courses is arranged on the boundary f side, and a line segment that is reduced by 2 lines is arranged on the boundary g side every 4 courses. A line segment that reduces by 2 every 6 courses is placed at an appropriate position in section h-i, a line segment that reduces by 2 every 4 courses is placed on the i side of section i-j, and every 2 courses on the j side Place a line segment to reduce by 2.

  In FIG. 10, the outline 41 can be approximated by four types of line segments. An example in which such approximation is difficult is shown in FIG. In this case, the section k-m and the section np can be approximated by a straight line, the section km can be approximated by a line segment that decreases by 2 every 2 courses, and the section np can be approximated by a line segment that decreases by 2 lines every 2 courses Each line can be approximated by a line segment that is reduced by 2 lines. The section m−n is not a straight section, but this portion is approximated by a straight line, for example, approximated by a line segment that is reduced by 2 every 6 courses. Then, if the line segment which reduces by 2 every 4 courses is arranged on the n side of the section n-p, the section boundaries can be connected relatively smoothly.

Results FIG. 12 shows a conventional example. In contrast to the reduction line 41 in FIG. 4, the reduction line 51 is called a J curve. That is, the reduced line 41 is approximated by a short line segment, and each line segment is rearranged in order from the smallest to the largest. Next, for each line segment, a course for executing the reduction is arranged according to a rule such as one reduction by one reduction or two reductions by one reduction. In the reduction line 51 by the J curve, the outline of the knitted fabric tends to recede with respect to the reduction line 41.

  In the reduction line 61 by the S curve, the line segment in the reduction line 41 is rearranged from a line segment with a large inclination to a line segment with a small inclination. Each line segment is expressed by a reduction of 1 per course or a reduction of 2 per course. When the S curve is used, the knitted fabric tends to be larger than the actual size.

  FIG. 13 shows an example of an actual garment design. FIG. 14 shows a reduction line when approximating with a J curve using the first reduction for each course with respect to the reduction line on the armhole side of the front body. FIG. 15 shows a reduction line when the same J curve is used and approximated by a reduction of the second for each course. In FIGS. 14 and 15 and the like, black is an area without stitches, dark gray is a normal stitch, and white stitches are reduction stitches. In FIG. 14, the reduction eyes are regularly arranged, but since the reduction of the first course is performed, the knitting efficiency is low. In FIG. 15, the arrangement of the reduction eyes is irregular, and a regular fashion line is not generated. In addition, the knitting efficiency is not necessarily high because the second course is reduced every three courses.

  FIG. 16 shows a reduction line in the embodiment. First, there is a line segment that reduces by 2 lines every 2 courses, then there is a line segment that decreases by 2 lines every 4 courses, and the fashion line is bent in the middle and is regular. And since it is reduced by 2 for every even number, the knitting efficiency is high.

  FIG. 17 shows the outlines of the conventional examples b) and c) and the example d) for the design of a). The portions 100 to 104 indicate the difference between the reduced line and the design, the solid line indicates the outline on the design, and the broken line indicates the reduced line. In the example in which one course is reduced for each course of b), the knitted fabric is swollen more than the design in the portion 100. In c) of the conventional example in which the reduction by two stitches is executed in one course, the knitted fabric is contracted at the portion 102 from the actual size. In the embodiment of d), the reduced line is removed from the design at the small portion 104, but the reduced line is almost faithful to the design.

In the embodiment, the supplemental reduction is an internal reduction inside the end of the knitted fabric, but an external reduction may be used. The increase may be done at the end of the part or inside. In the case where the knitted fabric is composed of a plurality of parts extending along the y direction, such as a hagi or a parachute pattern, and the boundary between the parts becomes a reduced line, the embodiment is applied to each reduced line.

2 Knit design device 4 Bus 6 Keyboard 8 Mouse 10 Color monitor 12 Disk drive 14 LAN interface 16 Color printer 18 Memory 20 Knit design unit 22 Bezier curve generation unit 24 Decrease / Increase line generation unit 26 Section division unit 28 Linear approximation unit 30 Data Conversion unit 32 Design program 34 Knitting data 40 Front body 41 Armhole reduction line 42 Neckhole reduction line 51 J curve reduction line 61 S curve reduction line
a to e boundary I to IV section y course direction x wale direction

Claims (8)

In order to create knitting data that can be executed on a flat knitting machine, the outer shape of the knitted fabric specified in the design data is converted to a reduced or increased line by reducing or increasing the stitches.
Inclination calculating step for dividing the outer shape into a plurality of sections and determining the inclination of the outer shape for each section ;
A predetermined number of stitches are regularly reduced or increased for each even number of courses, and one or two straight line segments are associated with each section with a slope close to the slope of each section of the outer shape. A line generation step for generating,
The length of each line segment so that the total number of courses of the line segments matches the number of courses determined from the outline, and the total number of reductions or increases matches the number of reductions or increases determined from the outlines. A line segment length determination step for determining
A line segment arranging step for generating a reduced line or an increased line by arranging corresponding line segments for each section and connecting adjacent line segments to each other is provided. , Knit design method. When two line segments with different inclinations are associated with one section, a line segment with a relatively small difference in inclination from the line segment in the adjacent section is given priority over a line segment with a relatively large inclination difference. The knit design method according to claim 1, wherein line segments are connected in the line segment arranging step so as to be connected.   2. The knit design method according to claim 1, wherein, in the inclination calculating step, the outer shape is divided into a plurality of sections by control points of a free curve representing the outer shape. In the inclination calculating step, a straight line portion is extracted from the outer shape as the section,
2. The knit design method according to claim 1, wherein, in the line segment length determining step, a line segment of an adjacent section is extended with respect to a gap between the sections, or a new section is generated in the gap.   The inclination calculation step stores a relative position of the control point with respect to the outer shape, and when the outer shape is changed, a section for the changed outer shape is generated based on the stored relative position. Knit design method.   2. The knit design method according to claim 1, wherein when generating a reduced line, in the line segment generating step, stitches are reduced by two stitches for every even number of courses. In order to create knitting data that can be executed by a flat knitting machine, in the device that converts the outer shape of the knitted fabric specified in the design data into reduced or increased lines by reducing or increasing stitches,
Inclination calculating means for dividing the outer shape into a plurality of sections and determining the inclination of the outer shape for each section ;
A predetermined number of stitches are regularly reduced or increased for each even number of courses, and one or two straight line segments are associated with each section with a slope close to the slope of each section of the outer shape. A line generation means for generating;
The length of each line segment so that the total number of courses of the line segments matches the number of courses determined from the outline, and the total number of reductions or increases matches the number of reductions or increases determined from the outlines. A line segment length determining means for determining
Line segments corresponding to each section are arranged, and adjacent line segments are connected to each other, thereby providing line segment arrangement means for generating reduced or increased lines. , Knit design equipment. In order to create knitting data that can be executed on a flat knitting machine, the knit design device converts the outer shape of the knitted fabric specified in the design data into reduced or increased lines by reducing or increasing stitches. In the program
The knit design device,
Inclination calculating means for dividing the outer shape into a plurality of sections and determining the inclination of the outer shape for each section ;
By regularly reducing or increasing the number of stitches for each even number of courses, one or two straight line segments are made to correspond to each section with a slope close to the slope of each section of the outer shape. Line segment generating means for generating
The length of each line segment so that the total number of courses of the line segments matches the number of courses determined from the outline, and the total number of reductions or increases matches the number of reductions or increases determined from the outlines. A line segment length determining means for determining
A knit design program for arranging a corresponding line segment for each section and connecting adjacent line segments to each other so as to function as a line segment arrangement unit for generating a reduced line or an increased line.