Square Distance Check - Shader

    float3 halfDimensions = dimensions * 0.5;

    bool insideX = abs(center.x - cubeCenter.x) <= halfDimensions.x;
    bool insideY = abs(center.y - cubeCenter.y) <= halfDimensions.y;
    bool insideZ = abs(center.z - cubeCenter.z) <= halfDimensions.z;

   bool flag = insideX && insideY && insideZ;

result= flag ? 1 : 0