Esempio n. 1
0
        /// <summary>
        /// Expands the AABB for this grid when a new tile is added. If the tile is already inside the existing AABB,
        /// nothing happens. If it is outside, the AABB is expanded to fit the new tile.
        /// </summary>
        /// <param name="gridTile">The new tile to check.</param>
        public void UpdateAABB(Indices gridTile)
        {
            var worldPos = GridTileToLocal(gridTile).ToWorld();

            if (AABBWorld.Contains(worldPos.Position))
            {
                return;
            }

            // rect union
            var a = AABBWorld;
            var b = worldPos;

            var x     = Math.Min(a.Left, b.X);
            var width = Math.Max(a.Left + a.Width, b.X);

            var y      = Math.Min(a.Top, b.Y);
            var height = Math.Max(a.Top + a.Height, b.Y);

            AABBWorld = new Box2(x, y, width - x, height - y);
        }
            /// <summary>
            /// Expands the AABB for this grid when a new tile is added. If the tile is already inside the existing AABB,
            /// nothing happens. If it is outside, the AABB is expanded to fit the new tile.
            /// </summary>
            /// <param name="gridTile">The new tile to check.</param>
            public void UpdateAABB(MapIndices gridTile)
            {
                var worldPos = GridTileToLocal(gridTile).ToWorld();

                if (AABBWorld.Contains(worldPos.Position))
                {
                    return;
                }

                // rect union
                var a = AABBWorld;
                var b = worldPos;

                var min_x = Math.Min(a.Left, b.X);
                var max_x = Math.Max(a.Right, b.X);

                var min_y = Math.Min(a.Bottom, b.Y);
                var max_y = Math.Max(a.Top, b.Y);

                AABBWorld = Box2.FromDimensions(min_x, min_y, max_x - min_x, max_y - min_y);
            }