I find
viewTransform := TMat4.Identity;
viewTransform := viewTransform * TMat4.Translate(x, y, 1);
viewTransform := viewTransform * TMat4.Scale(scale, scale, 1);
much more readable.
But I would just do:
viewTransform := TMat4.Identity * TMat4.Translate(x, y, 1) *
TMat4.Scale(scale, scale, 1);
why bother storing the intermediate results at all?
Putting the operator before the = makes you have to go back and look to see
what the operator is, where having the code in Result := Term * Term; format
is more readable because you read it left to right and the operators are in the
correct order they are actually used. I admit I am probably biased by looking
at code without += for 35 years, but I still find it more readable. I
completely understand += -= *= and /= I just don't care for it from a
readability point of view.. and figuring our what some code is doing 2 years
from now is way more important than getting it to work right now... it's when
you go back later you want it to be as readable as possible. I guess I just
prefer Variable := Formula; syntax and the clarity of it.
James
-----Original Message-----
From: fpc-pascal <fpc-pascal-boun...@lists.freepascal.org> On Behalf Of Ryan
Joseph
Sent: Wednesday, August 14, 2019 2:58 PM
To: FPC-Pascal users discussions <fpc-pascal@lists.freepascal.org>
Subject: Re: [fpc-pascal] += property bug?
> On Aug 14, 2019, at 2:53 PM, James Richters <ja...@productionautomation.net>
> wrote:
>
> I have only used += once; I normally would not use I:=I+1; or I+=1; I
> would use Inc(I);
Here’s an example of why we like c-style operators, i.e. it reduces redundancy
of the variable name. It’s no surprise that programmesr figured out
"viewTransform := viewTransform *” could be compressed and still have the same
meaning.
viewTransform := TMat4.Identity;
viewTransform *= TMat4.Translate(x, y, 1);
viewTransform *= TMat4.Scale(scale, scale, 1);
or
viewTransform := TMat4.Identity;
viewTransform := viewTransform * TMat4.Translate(x, y, 1);
viewTransform := viewTransform * TMat4.Scale(scale, scale, 1);
Regards,
Ryan Joseph
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