Collision Detection Between Two Meshes While Ignoring Shared Border Edges

[Gihong-Yim]

I need a function to check whether two meshes are colliding. However, the two meshes may have nearly identical edges at the border, and I do not want this to be considered a collision.

[Grantim]

Hello!

Easiest way to check is to use this function:

MeshLib/source/MRMesh/MRMeshCollide.h

Lines 14 to 20 in 6ff8795

	/**
	* \brief finds all pairs of colliding triangles from two meshes or two mesh regions
	* \param rigidB2A rigid transformation from B-mesh space to A mesh space, nullptr considered as identity transformation
	* \param firstIntersectionOnly if true then the function returns at most one pair of intersecting triangles and returns faster
	*/
	[[nodiscard]] MRMESH_API std::vector<FaceFace> findCollidingTriangles( const MeshPart & a, const MeshPart & b,
	const AffineXf3f * rigidB2A = nullptr, bool firstIntersectionOnly = false );

bool colliding = !findCollidingTriangles( meshA, meshB, nullptr, true ).empty();

or on python

colliding = len( meshlib.mrmeshpy.findCollidingTriangles( meshA, meshB, None, True ) ) > 0;