immerse's Introduction
immerse's People
immerse's Issues
Abstract the entire polygon immersion
There is too much detail exposed to the main function. Passing and updating pointers should be handled by the objects.
- Create a method that immerses the polygon and refines the mesh automatically. This can make use of existing methods.
- Break up the functionality into reading the polygon, refining based on point locations, traversing the tree if the node has already been allocated, etc.
Refactor refinement code
Currently, the refine
method recursively refines the entire tree by adding four children to each parent until reaching the max_level
. This duplicates the functionality of the insert
method, which does the same but only for one level at the current node memory address.
Instead, refine
should accept a level of refinements to perform (1 or more) and do that instead.
Add a traversal function
It would be useful to traverse the quadtree and optionally write the cell center and other information to a file for visualization. This can work in a recursive manner (similar to refinement), but only proceed if the cell initialization != NULL.
- Modify the code such that a leaf cell (cell with no children) has some indicator (e.g., NULL value of some flag).
Change polygon storage to DCEL
Use a more appropriate data structure for storing the polygon.
- https://w3.cs.jmu.edu/bowersjc/page/courses/spring17/cs480/labs/dcel/
- http://www.flipcode.com/archives/The_Half-Edge_Data_Structure.shtml
- https://cs184.eecs.berkeley.edu/article/12
- http://www.cs.sfu.ca/~binay/813.2011/DCEL.pdf
- https://cs.stackexchange.com/questions/2450/how-do-i-construct-a-doubly-connected-edge-list-given-a-set-of-line-segments
Add the ability to coarsen the quadtree
- Traverse to the finest level of the tree (determined when
is_leaf == true
). Store the memory address of the path (e.g., the memory address of the current node). - Move up one level (may require storage of memory address of parent node).
- Use the memory address saved in 1. to deallocate the object associated with the refined node and set the child pointer to
NULL
. - Repeat in the desired manner (until an appropriate
level
is attained, etc.).
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