|
| template<std::integral T> |
| constexpr bool | ghassanpl::geometry::squares::is_surrounding (glm::tvec2< T > a, glm::tvec2< T > b) |
| template<std::integral T> |
| constexpr bool | ghassanpl::geometry::squares::is_neighbor (glm::tvec2< T > a, glm::tvec2< T > b) |
| template<std::integral T> |
| constexpr bool | ghassanpl::geometry::squares::is_diagonal_neighbor (glm::tvec2< T > a, glm::tvec2< T > b) |
| template<std::integral T> |
| constexpr auto | ghassanpl::geometry::squares::manhattan_distance (glm::tvec2< T > a, glm::tvec2< T > b) |
| template<std::integral T> |
| constexpr auto | ghassanpl::geometry::squares::neighbor_distance (glm::tvec2< T > a, glm::tvec2< T > b) |
| template<std::integral T> |
| constexpr auto | ghassanpl::geometry::squares::chebyshev_distance (glm::tvec2< T > a, glm::tvec2< T > b) |
| template<std::integral T> |
| constexpr auto | ghassanpl::geometry::squares::surrounding_distance (glm::tvec2< T > a, glm::tvec2< T > b) |
| template<std::integral I, std::floating_point F> |
| constexpr glm::tvec2< F > | ghassanpl::geometry::squares::tile_pos_to_world_pos (glm::tvec2< I > tile_pos, glm::tvec2< F > tile_size) |
| template<std::integral I, std::floating_point F> |
| constexpr glm::tvec2< F > | ghassanpl::geometry::squares::tile_pos_to_world_pos (glm::tvec2< I > tile_pos, F tile_size) |
| template<std::integral I, std::floating_point F> |
| constexpr trec2< F > | ghassanpl::geometry::squares::world_rect_for_tile (glm::tvec2< I > pos, glm::tvec2< F > tile_size) |
| template<std::integral I, std::floating_point F> |
| constexpr trec2< F > | ghassanpl::geometry::squares::world_rect_for_tile (glm::tvec2< I > pos, F tile_size) |
| template<std::integral I = int, std::floating_point F> |
| glm::tvec2< I > | ghassanpl::geometry::squares::world_pos_to_tile_pos (glm::tvec2< F > world_pos, glm::tvec2< F > tile_size) |
| template<std::integral I = int, std::floating_point F> |
| glm::tvec2< I > | ghassanpl::geometry::squares::world_pos_to_tile_pos (glm::tvec2< F > world_pos, F tile_size) |
| template<std::integral I = int, std::floating_point F> |
| trec2< I > | ghassanpl::geometry::squares::world_rect_to_tile_rect (trec2< F > const &world_rect, glm::tvec2< F > tile_size) |
| template<std::integral I = int, std::floating_point F> |
| trec2< I > | ghassanpl::geometry::squares::world_rect_to_tile_rect (trec2< F > const &world_rect, F tile_size) |
| template<std::floating_point F> |
| glm::tvec2< F > | ghassanpl::geometry::squares::snap_world_pos_to_tile_grid (glm::tvec2< F > world_pos, glm::tvec2< F > tile_size) |
Operations on positions in a 2D square grid.
Square positions are defined as two integers x and y, in the primary position type glm::ivec2. The distances between these positions are dependent on the metric chosen.
Definitions:
- grid - a bounded or unbounded integer coordinate space that bijects a position in the space to an object called a square or tile
- tile - another name for square
- metric - the means to calculate distances between two squares
- adjacency - in a specified metric, two squares are considered "adjacent" if the distance between their positions is 1
- neighbor of S - a square N is considered the neighbor of square S if it shares an edge with S
- diagonal neighbor of S - a square N is considered the diagonal neighbor of square S if it shares a vertex with S
- square surrounding S - a square N is considered in the surrounding of square S if it shares an edge OR vertex with S
- the surrounding of S - all squares that are considered to be surrounding S
- tile space - a combination of a metric and a tile size; usually defined as part of a world
- world - a set of unique squares that form a grid within a tile space, either unbounded, or bounded by a rectangle edge; the squares have integral positions, and every position within the bounds refers to a unique square, but world can have non-integral "world" positions defined on it as well
- tile position - the integral position of a single tile in a world; every position within world bounds refers to a unique square in the world
- tile size - a world can define the geometrical extents of a single square/tile; these can then be used to define the world positions
- world position - the real-number, euclidean position inside a world; in general, the originating world position of a tile is given by: tile_position * tile_size
The tile space and world concepts may, in some cases, be used interchangeably, as they have similar properties in this context. In general, a world is both the container of all the squares and their data (as the grid type represents) and the set of properties (like the tile space) to operate within it.
1.16.1