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Pakage Fresnel on IDE

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Carlos Gonzaga

Good morning everyone.

I'd like to test the Fesnel project, but when installing the fresneldsgn.lpk package, I get an error saying the packages (fresnelcl.lpk and fresnelbase.lpk) don't exist. Is this intentional because it's still in development?

My setup:
Lazarus 4.99 (rev main_4_99-3125-g1ea612bbdb) FPC 3.3.1 x86_64-win64-win32/win64

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John Landmesser
to Carlos Gonzaga

Hi,

i am on lazraus trunk and i don't have this package, even on online package manager !

But perhaps you find infos here:

https://wiki.lazarus.freepascal.org/Fresnel

Carlos Gonzaga wrote 14 lines
Good morning everyone. I'd like to test the Fesnel project, but when installing the fresneldsgn.lpk package, I get an error saying the packages (fresnelcl.lpk and fresnelbase.lpk) don't exist. Is this intentional because it's still in development? My setup: Lazarus 4.99 (rev main_4_99-3125-g1ea612bbdb) FPC 3.3.1 x86_64-win64-win32/win64 -- Carlos Gonzaga

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Carlos Gonzaga
to John Landmesser

So, it doesn't actually exist in OPM, I downloaded it from the link you mentioned.

I'd like to know if anyone is using it with the Lazarus/FPC trunk!

Em dom., 28 de dez. de 2025 ?s 10:20, John Landmesser via lazarus <

Show quoted text 32 lines
escreveu: Hi, i am on lazraus trunk and i don't have this package, even on online package manager ! But perhaps you find infos here: https://wiki.lazarus.freepascal.org/Fresnel Am 28.12.25 um 13:57 schrieb Carlos Gonzaga via lazarus: Good morning everyone. I'd like to test the Fesnel project, but when installing the fresneldsgn.lpk package, I get an error saying the packages (fresnelcl.lpk and fresnelbase.lpk) don't exist. Is this intentional because it's still in development? My setup: Lazarus 4.99 (rev main_4_99-3125-g1ea612bbdb) FPC 3.3.1 x86_64-win64-win32/win64 -- Carlos Gonzaga -- _______________________________________________ lazarus mailing list https://lists.lazarus-ide.org/listinfo/lazarus
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Michael Van Canneyt
to Carlos Gonzaga: Good morning everyone. I'd like to test the Fesnel project, but when installing the…
Carlos Gonzaga wrote 6 lines
Good morning everyone. I'd like to test the Fesnel project, but when installing the fresneldsgn.lpk package, I get an error saying the packages (fresnelcl.lpk and fresnelbase.lpk) don't exist. Is this intentional because it's still in development?

No, but lazarus does not know these packages by default as they're not part of the lazarus default install.

if you look in the Fresnel repo

https://gitlab.com/freepascal.org/lazarus/fresnel

then you'll find the fresnel package in the src/ directory, and the fresnelbase in the src/base/ directory.

It's sufficient to open these packages just once, and then the lazarus IDE will know where they are and you can use them.

Michael.

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Carlos Gonzaga
to Michael Van Canneyt
It's sufficient to open these packages just once, and then the lazarus

IDE will know where they are and > you can use them.

So, I already updated it using the link mentioned, but during installation I get an error:
fresnel.lcl.pas(929,6) Error: Identifier not found "Metrics" fresnel.lcl.pas(929,35) Error: Identifier not found "TMPF_TRUETYPE" ...
As I mentioned before, I'd like to know if anyone is using it?

Em dom., 28 de dez. de 2025 ?s 17:23, Michael Van Canneyt via lazarus <

Show quoted text 35 lines
escreveu: On Sun, 28 Dec 2025, Carlos Gonzaga via lazarus wrote: > Good morning everyone. > > I'd like to test the Fesnel project, but when installing the > fresneldsgn.lpk package, I get an error saying the packages (fresnelcl.lpk > and fresnelbase.lpk) don't exist. Is this intentional because it's still in > development? No, but lazarus does not know these packages by default as they're not part of the lazarus default install. if you look in the Fresnel repo https://gitlab.com/freepascal.org/lazarus/fresnel then you'll find the fresnel package in the src/ directory, and the fresnelbase in the src/base/ directory. It's sufficient to open these packages just once, and then the lazarus IDE will know where they are and you can use them. Michael. -- _______________________________________________ lazarus mailing list https://lists.lazarus-ide.org/listinfo/lazarus
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Mattias Gaertner
to Carlos Gonzaga
Carlos Gonzaga wrote 7 lines
> It's sufficient to open these packages just once, and then the lazarus IDE will know where they are and > you can use them. So, I already updated it using the link mentioned, but during installation I get an error: fresnel.lcl.pas(929,6) Error: Identifier not found "Metrics" fresnel.lcl.pas(929,35) Error: Identifier not found "TMPF_TRUETYPE"

My fault, I forgot to clean up some win32 experiments. Fixed. I usually work on Linux, so I didn't spot the win32 issue.

... As I mentioned before, I'd like to know if anyone is using it?

Fresnel is in an early state.
Any help is welcome.

Mattias

Show quoted text 40 lines
Em dom., 28 de dez. de 2025 ?s 17:23, Michael Van Canneyt via lazarus < > escreveu: > > > On Sun, 28 Dec 2025, Carlos Gonzaga via lazarus wrote: > >> Good morning everyone. >> >> I'd like to test the Fesnel project, but when installing the >> fresneldsgn.lpk package, I get an error saying the packages > (fresnelcl.lpk >> and fresnelbase.lpk) don't exist. Is this intentional because it's still > in >> development? > > No, but lazarus does not know these packages by default as they're not part > of the lazarus default install. > > if you look in the Fresnel repo > > https://gitlab.com/freepascal.org/lazarus/fresnel > > then you'll find the fresnel package in the src/ directory, and the > fresnelbase in the src/base/ directory. > > It's sufficient to open these packages just once, and then the lazarus IDE > will know where they are and you can use them. > > Michael. > -- > _______________________________________________ > lazarus mailing list > > https://lists.lazarus-ide.org/listinfo/lazarus >

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Carlos Gonzaga
to Mattias Gaertner

Thank you for the clarification, Mattias.

Fresnel is in an early state. Any help is welcome.

That's exactly what I'd like to do, I'll try to get it working and look at the source code to see where to make changes.

Em seg., 29 de dez. de 2025 ?s 08:59, Mattias Gaertner via lazarus <

Show quoted text 78 lines
escreveu: On 12/29/25 12:19, Carlos Gonzaga via lazarus wrote: >> It's sufficient to open these packages just once, and then the lazarus > IDE will know where they are and > you can use them. > > So, I already updated it using the link mentioned, but during installation > I get an error: > fresnel.lcl.pas(929,6) Error: Identifier not found "Metrics" > fresnel.lcl.pas(929,35) Error: Identifier not found "TMPF_TRUETYPE" My fault, I forgot to clean up some win32 experiments. Fixed. I usually work on Linux, so I didn't spot the win32 issue. > ... > As I mentioned before, I'd like to know if anyone is using it? Fresnel is in an early state. Any help is welcome. Mattias > > Em dom., 28 de dez. de 2025 ?s 17:23, Michael Van Canneyt via lazarus < > > escreveu: > >> >> >> On Sun, 28 Dec 2025, Carlos Gonzaga via lazarus wrote: >> >>> Good morning everyone. >>> >>> I'd like to test the Fesnel project, but when installing the >>> fresneldsgn.lpk package, I get an error saying the packages >> (fresnelcl.lpk >>> and fresnelbase.lpk) don't exist. Is this intentional because it's still >> in >>> development? >> >> No, but lazarus does not know these packages by default as they're not part >> of the lazarus default install. >> >> if you look in the Fresnel repo >> >> https://gitlab.com/freepascal.org/lazarus/fresnel >> >> then you'll find the fresnel package in the src/ directory, and the >> fresnelbase in the src/base/ directory. >> >> It's sufficient to open these packages just once, and then the lazarus IDE >> will know where they are and you can use them. >> >> Michael. >> -- >> _______________________________________________ >> lazarus mailing list >> >> https://lists.lazarus-ide.org/listinfo/lazarus >> > > > -- _______________________________________________ lazarus mailing list https://lists.lazarus-ide.org/listinfo/lazarus
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