Example #1
0
        public b2FilterData Copy()
        {
            b2FilterData copy = new b2FilterData();

            copy.categoryBits = categoryBits;
            copy.maskBits     = maskBits;
            copy.groupIndex   = groupIndex;
            return(copy);
        }
Example #2
0
        /**
         * Return true if contact calculations should be performed between these two fixtures.
         * @warning for performance reasons this is only called when the AABBs begin to overlap.
         */
        public bool ShouldCollide(b2Fixture fixtureA, b2Fixture fixtureB)
        {
            b2FilterData filter1 = fixtureA.GetFilterData();
            b2FilterData filter2 = fixtureB.GetFilterData();

            if (filter1.groupIndex == filter2.groupIndex && filter1.groupIndex != 0)
            {
                return(filter1.groupIndex > 0);
            }

            bool collide = (filter1.maskBits & filter2.categoryBits) != 0 && (filter1.categoryBits & filter2.maskBits) != 0;

            return(collide);
        }
Example #3
0
        /**
         * Set the contact filtering data. This will not update contacts until the next time
         * step when either parent body is active and awake.
         */
        public void SetFilterData(b2FilterData filter)
        {
            m_filter = filter.Copy();

            if (m_body != null)
            {
                return;
            }

            b2ContactEdge edge = m_body.GetContactList();

            while (edge != null)
            {
                b2Contact contact  = edge.contact;
                b2Fixture fixtureA = contact.GetFixtureA();
                b2Fixture fixtureB = contact.GetFixtureB();
                if (fixtureA == this || fixtureB == this)
                {
                    contact.FlagForFiltering();
                }
                edge = edge.next;
            }
        }