Drawing method for showing three-dimensional shape of two-piece cap through dart reduction

Abstract

The invention discloses a drawing method for presenting a three-dimensional shape of a two-piece cap through dart reduction. The drawing method comprises the steps of determining the upwarp amount of a collar, trimming a cap bottom arc line, making a dart at the same position of a neck and a shoulder, determining the dart amount and the dart length, determining a cap center line and a cap opening point, trimming a cap opening, and extracting a contour line to obtain a two-piece cap net sample plate. The three-dimensional function of a three-piece type structure is achieved in a two-piece type structure saving mode, plate making is more convenient, modeling is more concise, the plate type is innovative, and the production efficiency can be improved; the two-piece structure is more favorable for wrapping the head of a human body, has certain activity, and is more stereoscopic in shape and more comfortable to wear; in the drawing process, only the province collection amount and the province length need to be determined, the drawing method is popular and easy to understand and operate, and technology popularization and promotion are facilitated.

Description

Technical Field

[0001] The invention relates to the field of clothing design, and in particular to a drawing method for a two-piece cap that presents a three-dimensional shape by darts. Background Art

[0002] Hats are the most common structure in clothing. They not only have a decorative effect on the appearance, but also have functions such as warmth and protection. Common hat structures include two-piece and three-piece. The two-piece hat is loose and casual, and is often used on loose sweatshirts and knitted jackets. The three-piece hat fits the human head better due to its divided structure, and the hat shape is three-dimensional. It is often used on down jackets and outdoor sports jackets. In the traditional hat structure, the two-piece hat is difficult to wrap the head in a three-dimensional shape, and the three-piece drawing process is too cumbersome. How to design a drawing method that is both convenient and fast, and has a three-dimensional modeling effect is a problem that needs to be solved urgently. Summary of the invention

[0003] Purpose of the invention: The purpose of the present invention is to provide a method for drawing a two-piece hat that presents a three-dimensional shape by darts.

[0004] Technical solution: The method for making a two-piece cap presenting a three-dimensional shape by darts according to the present invention comprises the following steps:

[0005] (1) Determine the amount of collar lift;

[0006] (2) Smooth out the arc of the hat base and make darts at the same point of the neck and shoulders;

[0007] (3) Determine the provincial volume and provincial road length;

[0008] (4) Determine the center line of the cap, the midpoint of the cap opening, and smooth the cap opening;

[0009] (5) Extract the contour line to obtain a two-piece hat net sample.

[0010] Furthermore, the step (1) includes drawing a horizontal line at the front neck shoulder point compared to the front center extension line, drawing a vertical line downward at the 1 / 2 point compared to the front collar point A, drawing a tangent a1 at point A equal to the arc length from point A to the shoulder point, and the line segment b2 is the collar lift amount.

[0011] Furthermore, the step (2) includes making a horizontal line c1 segment at point B, smoothing the arc of the hat bottom, and making darts at the same points of the neck and shoulders.

[0012] Furthermore, the horizontal line c1 segment satisfies: line segment c1 = rear collar arc length + dart amount.

[0013] Furthermore, in the step (3), the amount saved is 2 cm, and the length of the dart is 7 cm to 8 cm.

[0014] Furthermore, the step (4) comprises:

[0015] Make a cap height CG at the cap midpoint C, connect the front center extension line, the cap height inverted floating amount is 1cm, d1 is the cap midline;

[0016] Draw the cap width line e1 at point G, and Connect points F and D and draw the angle bisector of angle FGD compared to line segment FD;

[0017] Extend 5cm to 6cm from the 1 / 3 of line segment f1, and draw perpendicular lines from point H to line segments GD and GF, and retract the perpendicular points 1cm inward to get points K and J;

[0018] Continue to extend the line at point H by 3cm to 4cm to get point I. Connect IK and IJ to get the dart line at the top of the cap.

[0019] Straighten the line segment KL. Point L is 1.5 cm away from line segment e1. Extend 2 cm from point L to get the midpoint of the cap opening, and straighten the cap opening g1.

[0020] Furthermore, the step (5) includes extracting the contour line to obtain a two-piece hat net sample, and adding a 1 cm seam allowance to each side to obtain a rough sample.

[0021] Beneficial effects: Compared with the prior art, the present invention has the following significant advantages: the present invention adopts a two-piece structure to achieve the three-dimensional function of a three-piece structure, the plate making is more convenient, the shape is simpler, the plate type is innovative, and it is beneficial to improve production efficiency; the two-piece structure is more conducive to wrapping the human head, and has a certain amount of activity, the shape is more three-dimensional, and it is more comfortable to wear; in the drawing process, it only needs to determine the amount of darts and the length of the dart, the drawing method is easy to understand and easy to operate, and it is convenient for the popularization and promotion of technology. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is a flow chart of the present invention;

[0023] Figure 2 To determine the geometric diagram of the neck and shoulder joints;

[0024] Figure 3 A geometric diagram to determine the amount of hat lodging;

[0025] Figure 4 The geometric diagram for determining the vertical point;

[0026] Figure 5 It is the net sample drawing of the back piece and the front piece of the hat;

[0027] Figure 6 This is the finished hat picture. DETAILED DESCRIPTION

[0028] The technical solution of the present invention is further described below in conjunction with the accompanying drawings.

[0029] like Figure 1 As shown, the present invention comprises the following steps:

[0030] (1) Determine the amount of collar lift;

[0031] like Figure 2 As shown, take the prototype collar as an example. Draw a horizontal line at the front neck shoulder point compared to the front center extension line, draw a vertical line downward at the 1 / 2 point compared to the front collar point A, draw a tangent a1 at point A equal to the arc length from point A to the shoulder point, and line segment b2 is the collar lift amount.

[0032] (2) Smooth out the arc of the hat base and make darts at the same point of the neck and shoulders;

[0033] like Figure 3 As shown, draw a horizontal line c1 at point B (line segment c1 = back collar arc length + dart amount), smooth the arc of the hat bottom, make darts at the same point of the neck and shoulder, the dart amount is 2cm, and the dart height is 7cm to 8cm.

[0034] (3) Determine the provincial volume and provincial road length;

[0035] (4) Determine the center line of the cap, the midpoint of the cap opening, and smooth the cap opening;

[0036] like Figure 4 As shown, make the cap height CG at the midpoint C of the cap, connect the front center extension line, the cap height is inverted by 1cm, and d1 is the cap centerline.

[0037] Draw the cap width line e1 at point G, and Connect points F and D and draw the angle bisector of angle FGD compared to line segment FD.

[0038] Extend the line segment f1 by 5cm to 6cm at 1 / 3, draw perpendicular lines to line segments GD and GF at point H, and retract the hammer points 1cm inward to obtain points K and J.

[0039] Continue to extend the line from point H by 3cm to 4cm to get point I. Connect IK and IJ to form the dart line at the top of the cap.

[0040] Straighten the line segment KL. Point L is 11.5cm away from the line segment e1. Extend 2cm from point L to get the midpoint of the hat opening. Straighten the hat opening g1.

[0041] (5) Extract the contour line to obtain a two-piece hat net sample.

[0042] like Figure 5 As shown, the contour lines are extracted to obtain a two-piece hat net sample, and a 1cm seam allowance is added to each side to obtain a rough sample.

[0043] The final two-piece hat is as follows: Figure 6 As shown, (a) is the front side and (b) is the back side.

[0044] The key point of the present invention is to determine the two darts of the neck and shoulder coincidence point and the top of the hat, and then follow the steps step by step. The dividing arc shape of the hat side and the arc shape of the hat mouth should be smooth to conform to the curvature of the human head.

Claims

1. A method for drawing a two-piece cap to present a three-dimensional shape by darts, characterized in that: The steps include: (1) Determine the amount of collar lift; (2) Smooth out the arc of the hat base and make darts at the same point of the neck and shoulders; (3) Determine the provincial volume and provincial road length; (4) Determine the center line of the cap, the midpoint of the cap opening, and smooth the cap opening; (5) Extract the contour line to obtain a two-piece hat net sample.

2. The method for making a two-piece hat presenting a three-dimensional shape by darts according to claim 1, characterized in that: The step (1) comprises drawing a horizontal line at the front neck shoulder point compared to the front center extension line, drawing a vertical line downward at the 1 / 2 point compared to the front collar point A, drawing a tangent a1 at point A equal to the arc length from point A to the shoulder point, and the line segment b2 is the collar lift amount.

3. The method for making a two-piece cap presenting a three-dimensional shape by darts according to claim 1, characterized in that: The step (2) includes making a horizontal line c1 segment at point B, smoothing the arc of the hat bottom, and making darts at the same points of the neck and shoulders.

4. The method for making a two-piece cap presenting a three-dimensional shape by darts according to claim 3, characterized in that: The horizontal line c1 segment satisfies: line segment c1 = back collar arc length + dart amount.

5. The method for making a two-piece cap presenting a three-dimensional shape by darts according to claim 1, characterized in that: The amount saved in step (3) is 2 cm, and the length of the dart is 7 cm to 8 cm.

6. The method for making a two-piece cap presenting a three-dimensional shape by darts according to claim 1, characterized in that: The step (4) comprises: Make a cap height CG at the cap midpoint C, connect the front center extension line, the cap height inverted floating amount is 1cm, d1 is the cap midline; Draw the cap width line e1 at point G, and Connect points F and D and draw the angle bisector of angle FGD compared to line segment FD; Extend 5cm to 6cm from the 1 / 3 of line segment f1, and draw perpendicular lines from point H to line segments GD and GF, and retract the perpendicular points 1cm inward to get points K and J; Continue to extend the line at point H by 3cm to 4cm to get point I. Connect IK and IJ to get the dart line at the top of the cap. Straighten the line segment KL. Point L is 1.5 cm away from line segment e1. Extend 2 cm from point L to get the midpoint of the cap opening, and straighten the cap opening g1.

7. The method for making a two-piece cap presenting a three-dimensional shape by darts according to claim 1, characterized in that: The step (5) includes extracting the contour line to obtain a two-piece hat net sample, and adding a 1 cm seam allowance to each side to obtain a rough sample.

Images