Function properSphereIsectTri

src/SB/Core/gc/iCollide.cpp:154–198

}

static void properSphereIsectTri(const xVec3* center, F32 radius, xVec3* tohit, F32* dist_ptr,
                                 RpCollisionTriangle* tri)
{
    xVec3 projPoint;
    F32 dist2plane;
    F32 dist;
    F32 dist2;
    F32 radius2;
    U32 i;
    xVec3 vertClosestPoint;
    F32 vertDist2;
    xVec3 temp;

    dist = *dist_ptr;
    dist2plane = xVec3Dot((xVec3*)&tri->normal, center);
    radius2 = xVec3Dot((xVec3*)&tri->normal, (xVec3*)&tri->point);

    xVec3SMul(&projPoint, (xVec3*)&tri->normal, radius2 - dist2plane);
    xVec3Copy(tohit, &projPoint);
    xVec3AddTo(&projPoint, center);

    if (PointWithinTriangle(&projPoint, (xVec3**)&tri->vertices, (xVec3*)&tri->normal))
    {
        dist = iabs(radius2 - dist2plane);
    }
    else
    {
        dist2 = SQR(dist);
        for (i = 0; i < 3; i++)
        {
            FindNearestPointOnLine(&vertClosestPoint, &projPoint, (xVec3*)tri->vertices[i],
                                   (xVec3*)tri->vertices[(i + 1) % 3]);
            xVec3Sub(&temp, &vertClosestPoint, center);
            vertDist2 = xVec3Length2(&temp);

            if (vertDist2 < dist2 && vertDist2 < SQR(radius))
            {
                dist2 = vertDist2;
                xVec3Copy(tohit, &temp);
            }
        }
        dist = xsqrt(dist2);
    }
    *dist_ptr = dist;
}

static void _stripped(float* f)
{