Find collisions between an object and a list of obstacles.

Input parameters:

1. Co → Shape to collide.
2. Ob → Obstacles for collision.
3. Tl → Optional distance tolerance for collision detection. Positive tolerances also count near misses as collisions, negative tolerances only count overlaps deeper than the tolerance. Since only closed shapes can overlap, negative tolerances never yield collisions between points, curves or open surfaces. If omitted, the Absolute Tolerance Pin is used as a fallback.

Output parameters:

1. Cl → True if the collider is within the tolerance distance of any of the obstacles.
2. Ix → Indices of all obstacles that collide with the shape.