[x3d-public] Using c# with graphics

[Konstantin Smirnov]

Now taking part in a contest, want to understand, is this simple?
Most examples sum numbers simply

вт, 21 сент. 2021 г., 16:39 Konstantin Smirnov <
konstantin.e.smirnov at gmail.com>:

> It seems to me that we must not do additional operations on each calc
> Examples don't have this
>
> вт, 21 сент. 2021 г., 13:39 vmarchetti at kshell.com <vmarchetti at kshell.com>:
>
>> This reference:
>> https://docs.microsoft.com/en-us/dotnet/csharp/language-reference/builtin-types/floating-point-numeric-types
>> details that in the Microsoft .NET C# environment, the numeric double
>> type is an 8-byte representation, and offers about 16 digits of precision.
>>
>> In my experience, in those specific cases where numeric precision needs
>> to be carefully dealt with, the solution is not to round the results of a
>> calculation; rather the solution is to look at where two double values are
>> being compared for equality, and replacing the comparison
>>
>> if ( a==b) { .... }
>>
>> with
>> if ( abs(a-b) < tolerance ) { ... }
>>
>> and choosing a value of tolerance is can be something like
>>
>> double tolerance = 1.0e-15 * Math.Max( abs(a), abs(b))
>>
>> Vince Marchetti
>>
>>
>> On Sep 21, 2021, at 1:04 AM, Konstantin Smirnov <
>> konstantin.e.smirnov at gmail.com> wrote:
>>
>> Hi
>> When adding double numbers in .cs script, must we think about every digit
>> accuracy, or it's approximate numbers, so we can treat them as approximate
>> with e-7, or so? 15?
>>
>> Can we do calc and round afterwards?
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