C#•3y ago

donut.c

i wonder where the mistake is in here, i've read over https://www.a1k0n.net/2011/07/20/donut-math.html and thought i'd give it a try, but without magic transformation matrices and with some resemblance to a proper pipeline. the result i get looks somewhat like a torus, but not really one https://gist.github.com/rossiyareich/286b387a2bdfb59eeada23bdb59e7be9

a1k0n.net

Donut math: how donut.c works

Gist

Donut.cs

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10 Replies

Unknown User•3y ago

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i love cat(mull-rom splines)OP•3y ago

custom type

using System.Numerics;

namespace SpinningDonut;

internal struct Point3
{
    public Vector3 Position;
    public Vector3 Normal;

    public Point3(Vector3 position, Vector3 normal)
    {
        Position = position;
        Normal = normal;
    }
}

using System.Numerics;

namespace SpinningDonut;

internal struct Point3
{
    public Vector3 Position;
    public Vector3 Normal;

    public Point3(Vector3 position, Vector3 normal)
    {
        Position = position;
        Normal = normal;
    }
}

Unknown User•3y ago

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mtreit•3y ago

Ooh, a c# port of the donut program from the obfuscated c contest?

i love cat(mull-rom splines)OP•3y ago

from the article i dont understand the obfuscated c too as it premultiplies the transformation matrix

Unknown User•3y ago

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mtreit•3y ago

The code...is a donut...

Unknown User•3y ago

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mtreit•3y ago

https://tenor.com/view/donut-gif-25903557

Tenor

i love cat(mull-rom splines)OP•3y ago

i hate it when stuff almost works but doesnt whatever, i'll just leave it at this i thought about writing a software rasterizer and creating a 3d console engine but from doing this i don't think it's going to be particularly fun or performant back to doing unity catcorn

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donut.c