Function FindMinMaxDistance2s

Splines.cpp:1576–1597

namespace
{
    void FindMinMaxDistance2s(Vec2f p, const Bounds2& bbox, float* minD2, float* maxD2)
    {
        const Vec2f& p0 = bbox.mMin;
        const Vec2f& p1 = bbox.mMax;

        // Find the nearest point to p inside the bbox
        // This can be a bbox vertex, a point on an edge or face, or p itself if it's inside the box
        float minX = Clamp(p.x, p0.x, p1.x);
        float minY = Clamp(p.y, p0.y, p1.y);

        // Find the farthest point from p inside the bbox
        // This is always a bbox vertex.
        Vec2f d0(abs(p - p0));
        Vec2f d1(abs(p - p1));

        float maxX = d0.x > d1.x ? p0.x : p1.x; // select the coordinate we're farthest from
        float maxY = d0.y > d1.y ? p0.y : p1.y;

        // return len2
        *minD2 = sqr(p.x - minX) + sqr(p.y - minY);
        *maxD2 = sqr(p.x - maxX) + sqr(p.y - maxY);
    }

    void FindMinMaxDistance2s(Vec2f p, const Spline2& spline, float* minD2, float* maxD2)
    {