LYGIA Shader Library

boxFrameSDF (lygia/v1.1.6/sdf/boxFrameSDF)

generate the SDF of a bounding box

Use:

<float> boxFrameSDF( <vec3> p, <vec3> b, <float> e )

Check it on Github


#ifndef FNC_BOXFRAMESDF
#define FNC_BOXFRAMESDF

float boxFrameSDF( vec3 p, vec3 b, float e ) {
    p = abs(p) - b;
    vec3 q = abs(p + e) - e;

    return min(min(
        length(max(vec3(p.x,q.y,q.z),0.0))+min(max(p.x,max(q.y,q.z)),0.0),
        length(max(vec3(q.x,p.y,q.z),0.0))+min(max(q.x,max(p.y,q.z)),0.0)),
        length(max(vec3(q.x,q.y,p.z),0.0))+min(max(q.x,max(q.y,p.z)),0.0));
}

#endif

Use:

<float> boxFrameSDF( <float3> p, <float3> b, <float> e )

Check it on Github


#ifndef FNC_BOXFRAMESDF
#define FNC_BOXFRAMESDF

float boxFrameSDF( float3 p, float3 b, float e ) {
    p = abs(p) - b;
    float3 q = abs(p + e) - e;

    return min(min(
        length(max(float3(p.x,q.y,q.z),0.0))+min(max(p.x,max(q.y,q.z)),0.0),
        length(max(float3(q.x,p.y,q.z),0.0))+min(max(q.x,max(p.y,q.z)),0.0)),
        length(max(float3(q.x,q.y,p.z),0.0))+min(max(q.x,max(q.y,p.z)),0.0));
}

#endif

LYGIA is dual-licensed under the Prosperity License and the Patron License for sponsors and contributors.

Sponsors and contributors are automatically added to the Patron License and they can ignore the any non-commercial rule of the Prosperity Licensed software (please take a look to the exception).

It's also possible to get a permanent comercial license hook to a single and specific version of LYGIA.

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