How to make a hatched polygon

Harry H. Arends schrieb:

I must hatch a area that has a outer diam of 100mm and a inner diam of 65mm.

I try to do this by hand width arc lines but those bent any way but not the

correct one.

Can I do this with a script?

You can do /almost anything/ with a script.

However, this is not necessary here.

Just start the polygon command with the proper width, then click (or

enter) coordinate (-50 0), choose the right of the two rounded bend

styles, and click/enter (0 50). Proceed to (50 0), you must change the

bend style (use Ctl + right mouse button). Continue for (0 -50) and

finally close the circle at (-50 0).

For the inner clearance, add a circle of width 0 in the corresponding

restrict layer.

Set the polygon property "fill style" to hatch. You can do that during

drawing or afterwards.

(Using the last wire bend style (freehand) is yet faster, but harder to

explain.)

Tilmann

"Tilmann Reh" <tilmannreh@despammed.com> schreef in bericht

news:gvevt4$3j3$1@cheetah.cadsoft.de...

Harry H. Arends schrieb:

I must hatch a area that has a outer diam of 100mm and a inner diam of

65mm.

I try to do this by hand width arc lines but those bent any way but not

the

correct one.

Can I do this with a script?

 

You can do /almost anything/ with a script.

However, this is not necessary here.

 

Just start the polygon command with the proper width, then click (or

enter) coordinate (-50 0), choose the right of the two rounded bend

styles, and click/enter (0 50). Proceed to (50 0), you must change the

bend style (use Ctl + right mouse button). Continue for (0 -50) and

finally close the circle at (-50 0).

 

For the inner clearance, add a circle of width 0 in the corresponding

restrict layer.

 

Set the polygon property "fill style" to hatch. You can do that during

drawing or afterwards.

 

(Using the last wire bend style (freehand) is yet faster, but harder to

explain.)

 

Tilmann

If have to make that on layer 25. Is it possible to make a polygon that is

19mm width?

Harry,

it is not necessary to always quote the full text. See

<http://www.netmeister.org/news/learn2quote2.html> and

<http://www.cadsoft.de/newsguide.htm>.

(Further, you don't need to specify a reply-to address if it's the same

as the sender address anyway.)

Harry H. Arends schrieb:

I must hatch a area that has a outer diam of 100mm and a inner diam of

65mm.

...

If have to make that on layer 25. Is it possible to make a polygon that is

19mm width?

For the above geometry, you'd need 17.5 mm anyway - however, a polygon

is always defined by its /outlines/, so the answer is "no".

If you can't use a restriction for the inner circular "hole" since you

are working on non-copper layers, you need to use two C-shaped polygons

that cover (for example) half of your area each. You will have to draw

the inner and outer half-circly as described earlier, and the radial

borders as straight wires.

Something like this:

  -- --

/  |  \

\  |  /

  -- --

You'll always have a wire of the polygon width at the border that is

shared by both polygons (the centered vertical line in the above

sketch). Maybe you can play with spacing and width to make it visually

disappear.

You can generate the second polygon as rotated copy of the first, so you

need to draw only one.

Tilmann

For the above geometry, you'd need 17.5 mm anyway - however, a polygon

is always defined by its /outlines/, so the answer is "no".

 

If you can't use a restriction for the inner circular "hole" since you

are working on non-copper layers, you need to use two C-shaped polygons

that cover (for example) half of your area each. You will have to draw

the inner and outer half-circly as described earlier, and the radial

borders as straight wires.

 

Something like this:

-- --

/  |  \

|  / \  |

| |   | |

|  \ /  |

\  |  /

-- --

 

You'll always have a wire of the polygon width at the border that is

shared by both polygons (the centered vertical line in the above

sketch). Maybe you can play with spacing and width to make it visually

disappear.

 

You can generate the second polygon as rotated copy of the first, so you

need to draw only one.

 

Tilmann

As I am trying this to work with the mouse I keep having problems with

changing the wire bend every time correct.

So I rather would do this in a script, working from 9 to now trying again

and again. If a step goes wrong you must start over again and it is

impossible to go one step back whilst defining a polygon.

How do I define a polygon in script is the big question.

Harry H. Arends schrieb:

How do I define a polygon in script is the big question.

See my answer in support.eng.

Please do not post the same issue to both groups, many of us read both.

Please do not "move" a thread from one group to another, unless the

topic really has changed.

Tilmann