New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

Sign up for GitHub

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Jump to bottom

what is dda_unit doing? #24

Open

brabbitdousha opened this issue Apr 6, 2023 · 1 comment

brabbitdousha commented Apr 6, 2023

void dda_unit(vec3 cen, vec3 invdir, out float tmax) {
    float t1, t2;
    tmax = 1e9f;
    for (int i = 0; i < 3; ++i) {
        t1 = - cen[i] * invdir[i];
        t2 = t1 +  invdir[i];
        tmax = min(tmax, max(t1, t2));
    }
}

I may have trouble understanding it...could you help me..many thanks!..
It looks like the t1 is trying to go back to the origin...

The text was updated successfully, but these errors were encountered:

liaohuanxuan commented Jan 12, 2024

I had the same question. Do you understand?

Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment