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freesewing/markdown/org/docs/patterns/brian/options/es.md
2022-05-20 17:07:26 +02:00

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title: "Brian body block: Design Options"


Entendiendo la manga

In version 2 of FreeSewing, the sleevecap of Brian was redesigned to be more adaptable to different types of sleeves and garments. As a result, the sleevecap alone now has 20 options to control its shape. Whereas that may seem a bit overwhelming at first, understanding how the sleevecap is drafted makes it easy to understand what all the individual options do.

La caja delimitadora

The bounding box of the sleevecap is a rectangle that is as wide as the sleeve, and as high as the sleevecap. Inside this box, we will construct our sleevecap later.

The Brian sleevecap

The image above shows a sleevecap, starting at point 1, then going up until point 4, and then down again to point 2.

Encontrar cuál es la parte frontal de la manga(capa)

En nuestro ejemplo, el frente de la manga está en el lado derecho. Pero, ¿cómo sabría usted?

Mientras que los patrones normalmente tienen una indicación que muestra qué lado es qué (una sola nota significa el frente, mientras que una batida doble significa la parte trasera), también puedes reconocer la parte frontal de una manga porque está más curvada. La parte trasera del manga también se curvará, pero es una curva más plana. That's because the human shoulder is more pronounced and curved on the front of the body, thus the sleevecap is more curved there to fit the shoulder.

The width of the sleevecap (and thus the width of the sleeve at the bottom of the armhole) is equal to the distance between points 1 and 2. That distance depends on the measurements of the model, the amount of ease, the cut of the garment and so on. For our sleevecap, all we need to know is that we start with a given width. And while that width can be influenced by other factors, we can not influence it by any of the sleevecap options.

Controlling the top of the sleevecap

The height of the sleevecap is equal to the distance between points 3 and 4. The exact height is a trade-off between the measurments of the model, options, ease, sleevecap ease, and the fact that the sleeve ultimately has to fit the armhole. So the height may vary, and we don't control the exact value. But there are two options that control the shape of our sleevecap:

In other words, point 4 can be made higher and lower and, perhaps less intutitively, it can also be changed to lie more to the right or the left, rather than smack in the middle as in our example.

Los puntos de inflexión

Controlling the inflection points

With points 1, 2, 3, and 4 in place, we have a box to draw our sleevecap in. Now it's time to map out our inflection points. These are points 5 and 6 on our drawing, and their placement is determined by the following 4 options:

Como usted ve en nuestro ejemplo, estos puntos no siempre se encuentran en nuestra línea de manga. En cambio, ellos son instrumentales en la creación de los puntos que siempre se encuentran en la manga: los puntos de fondo.

Los puntos de ancla

Controlling the anchor points

Ultimately, our sleevecap will be the combination of 5 curves. In addition to points 1 and 2, the four anchor points that are marked in orange in our example will be the start/finish of those curves.

The points are offset perpendicular from the middle of a line between the two anchor points surrounding them. The offset for each point is controlled by these 4 options:

Hemos dividido nuestra manga en 4 cuarteles. Empezamos en el frente (la derecha en nuestro ejemplo) con el trimestre 1, y hacer nuestro camino hacia atrás hasta el final con el cuarto trimestre.

Like the offset option, the last options to determine the shape of our sleevecap will just repeat so you can control each quarter individually.

La propagación

Controlling the anchor points

We now have all the start and end points to draw the 5 curves that will make up our sleevecaps. What we're missing are the control points (see our info on Bézier curves to learn more about how curves are constructed). These are determined by the so-called spread.

For each of the anchor points (the ones marked in orange, not points 1 and 2) there is an option to control the spread upwards, and downwards:

Los lectores atentos habrán notado que el punto 4 no es un punto de fondo. En otras palabras, no hay garantía de que se acostará en la línea de manga. Lo cual también significa que la dispersión hacia arriba entre los trimestres 2 y 3 influirá en la altura de la manga. Reduce la propagación hacia arriba y la curva se sumergirá por debajo del punto 4. Aumenta y la curva se elevará por encima.

Takeaways

While the sleevecap in Brian (and all patterns that extend Brian) have a lot of options, understanding how the sleevecap is constructed can help you design the exact sleevecap shape you want. To do so:

  • Empezar con colocar la parte superior de tu manga
  • Luego determina los puntos de inflexión
  • A continuación, utilice el desplazamiento para controlar la inclinación de la curva
  • Por último, utilice la propagación para suavizar las cosas

What's important to remember is that you're only ever controlling the shape of the sleevecap. Whatever shape you design, it will be fitted to the armhole, meaning that its size can and will be adapted to make sure the sleeve fits the armscye. However, the shape you design will always be respected.