void b2GetPointStates()

in Box2D/Collision/b2Collision.cpp [85:127]

• 35 lines of code
• 8 McCabe index (conditional complexity)

void b2GetPointStates(b2PointState state1[b2_maxManifoldPoints], b2PointState state2[b2_maxManifoldPoints],
					  const b2Manifold* manifold1, const b2Manifold* manifold2)
{
	for (int32 i = 0; i < b2_maxManifoldPoints; ++i)
	{
		state1[i] = b2_nullState;
		state2[i] = b2_nullState;
	}

	// Detect persists and removes.
	for (int32 i = 0; i < manifold1->pointCount; ++i)
	{
		b2ContactID id = manifold1->points[i].id;

		state1[i] = b2_removeState;

		for (int32 j = 0; j < manifold2->pointCount; ++j)
		{
			if (manifold2->points[j].id.key == id.key)
			{
				state1[i] = b2_persistState;
				break;
			}
		}
	}

	// Detect persists and adds.
	for (int32 i = 0; i < manifold2->pointCount; ++i)
	{
		b2ContactID id = manifold2->points[i].id;

		state2[i] = b2_addState;

		for (int32 j = 0; j < manifold1->pointCount; ++j)
		{
			if (manifold1->points[j].id.key == id.key)
			{
				state2[i] = b2_persistState;
				break;
			}
		}
	}
}