quadtree

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Quadtree issue - storing redundant info

I have an image which is not a square (m x n dimension). Also its dimensions are not to the base 2 (i.e m not = 2^k & n not = 2^k). I have dealt with this by placing the image in a larger square ([详细]

2023-02-11 06:28 分类：问答
Help with algorithm for compute columns sum of a (quadtree) matrix?

Given this definition and a test matrix: data (Eq a, Show a) => QT a = C a | Q (QT a) (QT a) (QT a) (QT a)[详细]

2023-02-09 08:00 分类：问答
When representing 2^n x 2^n matrices using quadtrees

I\'ve just found the definition on my textbook and can\'t imagine what nexp is supposed to do/mean: data (Eq a, Show a) => QT a = C a | Q开发者_开发知识库 (QT a) (QT a) (QT a) (QT a)[详细]

2023-02-09 06:49 分类：问答
Algorithm to check quadtree horizontal symmetry?

data (Eq a, Show a) => QT a = C a | Q (QT a) (QT a) (QT a) (QT a) deriving (Eq, Show) Giving the definition as above, write a predicate to check if a given image (coded as a quadtree) is symmetr[详细]

2023-02-09 06:11 分类：问答
Occurs check: cannot construct the infinite type?

I\'m trying to write a function that, given two quadtrees representing images, will output another boolean quadtree \"mask\", with value True for a pixel if both quadtrees have the same color the corr[详细]

2023-02-09 02:05 分类：问答
Quadtree explanation and C implementation [closed]

It's difficult to tell what is being asked here. This question is ambiguous, vague, incomplete, overly broad, or rhetorical andcannot be reasonably answered in its current form. For help clari[详细]

2023-02-01 04:46 分类：问答
QuadTree for 2D collision detection

I\'m currently working on a 2D shoot them up type of game, and I\'m using a quad tree for my collision detectio开发者_开发知识库ns. I wrote a working quad tree that correctly pushes my actors into the[详细]

2023-01-30 04:25 分类：问答
Decent (r-tree, quad-tree or similar) library in ruby for searching spatial data

I have a database of 20k+ cities with latitude and longitude and I need to make lot of nearest point queries (which city is the nearest to certain lat,long point) against this dataset.[详细]

2023-01-12 14:55 分类：问答
Quadtree in javascript

I have been working in jQuery and I was given this code for a quadtree in javascript: map = array( array(array(1,2,3,4), array(1,2,3,4), array(1,2,3,4), array(1,2,3,4)),[详细]

2023-01-09 04:43 分类：问答
QuadTrees - how to update when internal items are moving

I\'ve implemented a working QuadTree. It subdivides 2-d space in order to accomodate items, identified by their bounding box (x,y,width,height) on the smallest possible quad (up to a minimum area).[详细]

2023-01-01 05:24 分类：问答