topic Re: Layer opacity in EAGLE Forum

Layer opacity

Anonymous — Fri, 16 Jun 2017 19:28:32 GMT

Hello there,

I am swapping from Altium Designer to Eagle. I am looking for the option to change the layer opacity. At the moment the layers are a bit transparrent and the underlying layers colors blend in making new colors, like pink...

How can make those layers be 100% opaque? I would appreciate all help!

Re: Layer opacity

Anonymous — Mon, 19 Jun 2017 10:00:38 GMT

Anyone please...?

Re: Layer opacity

rachaelATWH4 — Mon, 19 Jun 2017 10:11:31 GMT

Hello,

It looks like you have alpha blending turned off which is why you are getting the pinks.

Options -> Set....

Then tick the 'Use Alpha Blending' option and it'll look a lot nicer.

You can then also manually create your own palette, look in help for the the SET command under the colours section. It tells you how to set colours with:

SET PALETTE index argb

where the a of argb is the alpha so you can set the opacity with that. You can create a script file to define your own colour palette which you can run to configure it how you like more easily.

Best Regards,

Rachael

Re: Layer opacity

Anonymous — Mon, 19 Jun 2017 19:24:50 GMT

Hi there, thanks for answer.

I do have alpha blending turned on:

So basically I need to write a script in order to change colors? There is no way of clicking this out?

Re: Layer opacity

jorge_garcia — Mon, 19 Jun 2017 19:29:18 GMT

Hi @Anonymous,

I hope you're doing well. I think Rachael meant to turn Alpha blending off, if you turn it off then you don't get the color mixing.

Try that and let me know if you continue to run into problems.

Best Regards,

Re: Layer opacity

Anonymous — Mon, 19 Jun 2017 19:31:50 GMT

This is with alpha blending off:

I just need to turn the alpha channel to 100% really.

Re: Layer opacity

rachaelATWH4 — Mon, 19 Jun 2017 19:39:11 GMT

Hi Jorge,

I meant turn it on, it gives pinks which are not good for a clear layout with it turned off as shown in the two pics the OP has posted.

Hi bremenpl,

There is a script called defaultcolours.scr in the EAGLE-x.x.x/scr/ folder. Copy that to defaultcolours-noblending.scr and then change all the alpha values to FF and I think it should do what you want when you run that script.

Best Regards,

Rachael

Re: Layer opacity

Anonymous — Mon, 19 Jun 2017 19:49:27 GMT

Assuming the LSB is the alpha channel, I think it didnt work out...

Re: Layer opacity

rachaelATWH4 — Mon, 19 Jun 2017 19:52:51 GMT

@Anonymous wrote:
Assuming the LSB is the alpha channel, I think it didnt work out...

The alpha channel is the first octet as the format is:

SET PALETTE index argb

Best Regards,

Rachael

Re: Layer opacity

Anonymous — Mon, 19 Jun 2017 20:55:13 GMT

You are right, my bad! Thats what I was looking for, thank you.