quadtree-cljc.core
->boundsclj/s
(->bounds x y width height)Returns a map representing a bounding box
Returns a map representing a bounding box
->quadtreeclj/s
(->quadtree bounds max-objects max-levels level objects nodes)Returns a map representing a quadtree
Returns a map representing a quadtree
get-quadrantclj/s
(get-quadrant quadtree bounds-obj)Determine the quadrant bounds-obj belongs to in quadtree
Determine the quadrant `bounds-obj` belongs to in `quadtree`
insertclj/s
(insert quadtree bounds-obj)Insert bounds-obj into the node, returning a freshly grown quadtree.
If the node exceeds the capacity, it will split and add all objects to
their corresponding subnodes.
Insert `bounds-obj` into the node, returning a freshly grown quadtree. If the node exceeds the capacity, it will split and add all objects to their corresponding subnodes.
insert-allclj/s
(insert-all quadtree bounds-objs)Takes a quadtree and inserts all bounds objects from the
bounds-objs vector.
Takes a `quadtree` and inserts all bounds objects from the bounds-objs vector.
intersects?clj/s
(intersects? obj-a obj-b)Takes two object bounds and returns true if they intersect.
Takes two object bounds and returns true if they intersect.
point?clj/s
(point? {:keys [x y width height]})Returns true if this object is a point in space as in it has no width or height
Returns true if this object is a point in space as in it has no width or height
retrieveclj/s
(retrieve quadtree bounds-obj)Retrieves a vector of all the bounds objects that could collide with
bounds-obj in quadtree.
Retrieves a vector of all the bounds objects that could collide with `bounds-obj` in `quadtree`.
retrieve-intersectionsclj/s
(retrieve-intersections quadtree bounds-obj)Returns all a vector of all the objects that collide/intersect
with bounds-obj in the quadtree.
Returns all a vector of all the objects that collide/intersect with `bounds-obj` in the `quadtree`.
retrieve-pointsclj/s
(retrieve-points quadtree bounds-obj)Returns a vector of all the points that collide/intersect
with bounds-obj in the quadtree.
Returns a vector of all the points that collide/intersect with `bounds-obj` in the `quadtree`.
splitclj/s
(split quadtree)Splits a quadtree created with ->quadtree into
4 sub-nodes returns quadtree if this quadtree already
has four nodes. Returns nil if you passed the wrong type
or doesn't have the required keywords.
Splits a `quadtree` created with `->quadtree` into 4 sub-nodes returns `quadtree` if this quadtree already has four nodes. Returns nil if you passed the wrong type or doesn't have the required keywords.
total-nodesclj/s
(total-nodes quadtree)Returns the total number of sub-trees in quadtree. Valid
sub-trees have a vector as their value to the parent's :nodes
keyword.
Returns the total number of sub-trees in `quadtree`. Valid sub-trees have a vector as their value to the parent's :nodes keyword.
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