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369 Commits

Author SHA1 Message Date
Lucas De Marchi 0d4caa3ccc AP_Math: remove declaration of not implemented functions 2016-08-03 00:16:35 -03:00
Murilo Belluzzo 70942472d3 AP_Math: Matrix: Change deallocator to match allocator used 2016-08-03 00:09:11 -03:00
Lucas De Marchi 7b7e73680f AP_Math: add USEC_PER_MSEC 2016-07-30 00:55:28 -03:00
Peter Barker 2047d53470 Math: move closest_point in from AC_Avoid 2016-07-25 20:24:37 +09:00
Peter Barker 779f78d471 AP_Math: vector3 perpendicular function 2016-07-25 20:24:37 +09:00
Peter Barker f6cb0ffb6f AP_Math: add Vector2f perpendicular 
Add closest_distance_between_radial_and_point function
 2016-07-25 20:24:37 +09:00
Peter Barker b6d0b028c3 AP_Math: add operator[] to Vector2 2016-07-25 20:24:37 +09:00
Daniel Ricketts 249d95b413 AP_Math: add Polygon_outside and Polygon_complete functions 2016-06-25 15:55:55 +09:00
Leonard Hall e0eecd56b2 AP_Math: use is_zero and float constants 2016-06-24 16:16:34 +09:00
Leonard Hall 7f933140c7 AP_Math: small formatting fix to quaternion rotation_matrix 
No functional change
 2016-06-24 16:16:33 +09:00
Leonard Hall 8afd29cc85 AP_Math: add quaternion::rotation_matrix_norm 2016-06-24 16:16:28 +09:00
Pierre Kancir a8e5ff93b5 AP_Math: Correct missing declaration warning 2016-06-21 12:17:46 -03:00
Tom Pittenger 00aaa78757 AP_Math: add separate check_lat() and check_lng() 2016-06-06 13:02:56 -07:00
Andrew Tridgell 3969bde84a AP_Math: fixed coverity warning in example 2016-06-05 07:20:46 +10:00
Peter Barker cb16d0b6c6 AP_Math: correct examples build on px4 2016-06-04 12:31:36 -03:00
Tom Pittenger 7b4c503052 AP_Math: use new check_latlng helper 2016-06-01 17:38:48 -07:00
Tom Pittenger ce9ecf9f3d AP_Math: added check_latlng helper 2016-06-01 17:38:48 -07:00
Gustavo Jose de Sousa ef61096e08 AP_Math: geodesic_grid tool: show triangle number for sections too 2016-05-18 13:28:52 -03:00
Gustavo Jose de Sousa a6deb65d95 AP_Math: geodesic_grid tool: add option --section 2016-05-18 13:28:52 -03:00
Lucas De Marchi 1ac712fa65 AP_Math: fix is_zero() after template conversion 2016-05-17 15:49:29 -07:00
Lucas De Marchi fa6f2c6b67 AP_Math: fix some coding style mistakes 
- fix alignement of &
    - remove const from bool arguments
 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa 390b196eda AP_Math: AP_GeodesicGrid: add notice for auto generated code 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa b3068baa11 AP_Math: add geodesic_grid toolset 
That was used to aid development AP_GeodesicGrid and understanding its
concepts.
 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa 9d34b3b996 AP_Math: AP_GeodesicGrid: make all methods static 
Since all members are.
 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa 3b05ec1157 AP_Math: make vectors and matrix constructors constexpr 
That allows some object to be constructed at compile time.
 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa 77223a7fcb AP_Math: AP_GeodesicGrid: make data static 
That gives the change of storing that data in flash storage in some
architectures. That doesn't happen yet though, some extra changes are required
for that to happen.
 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa fd2428db34 AP_Math: AP_GeodesicGrid: reduce number of _neighbor_umbrellas items 
Only the first half is necessary. The values for the other half can be derived.
 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa 43d9e00ab7 AP_Math: AP_GeodesicGrid: use uint8_t for _neighbor_umbrellas 
All integers there are limited to the range [0,20), so uint8_t is enough.
 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa 54889e4175 AP_Math: AP_GeodesicGrid: reduce number of inverses by half 
We don't actually need all of them, since the second half is for the opposite
triangles. In that case we just need to negate the resulting vector when
changing basis.
 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa f31161ecb6 AP_Math: AP_GeodesicGrid: remove triangles 
There's no need to keep those triangles, since we just need the inverses.
 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa b34c04a4f9 AP_Math: test_geodesic_grid: test also non-centroid vectors 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa 8e8ab3af96 AP_Math: AP_GeodesicGrid: remove section_triangle() function 
That function was only being used by the unit tests and the benchmark. In order
to remove memory usage, the triangles will be removed, since we don't actually
need to keep them in real situations. Thus, this patch removes that function
and copy those triangles to the test and benchmark.
 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa c7eb46fae2 AP_Math: AP_GeodesicGrid: optimize _from_neighbor_umbrella() 
This is the second optimization. With that we don't have to iterate over the
umbrella's components.

The table below summarizes the mean CPU time in ns from the brenchmark results
on an Intel(R) Core(TM) i7-3520M CPU @ 2.90GHz processor:

       | Naive implementation | First Optimization | Second Optimization
------------------------------------------------------------------------
Min.   |                 26.0 |              28.00 |                26.0
1st Qu.|                 78.0 |              48.75 |                39.0
Median |                132.0 |              57.00 |                41.0
Mean   |                130.1 |              61.20 |                41.6
3rd Qu.|                182.2 |              76.00 |                47.0
Max.   |                234.0 |              98.00 |                54.0
 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa eb90ef23a1 AP_Math: AP_GeodesicGrid: fix algorithm for null vector 
If v is the null vector, then alpha * v is still the null vector for any alpha
as a real number. That means that the null vector doesn't cross any section.
 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa c28c3265c8 AP_Math: AP_GeodesicGrid: optimize with neighbor umbrellas 
This is a first optimization of the algorithm. The struct for the neighbor
umbrella has only one member, but new members will be added in the next
optimization.

The table below summarizes the mean CPU time in ns from the brenchmark results
on an Intel(R) Core(TM) i7-3520M CPU @ 2.90GHz processor:

Cases  | Naive implementation | First Optimization
--------------------------------------------------
Min.   |                 26.0 |              28.00
1st Qu.|                 78.0 |              48.75
Median |                132.0 |              57.00
Mean   |                130.1 |              61.20
3rd Qu.|                182.2 |              76.00
Max.   |                234.0 |              98.00

This optimization reduces the mean time for the worst case (Max. line) by more
than 50%.
 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa 0ff05b7af3 AP_Math: test_geodesic_grid: test triangles indexes 
That helps figuring out which intermediate step failed the high level call.
 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa 4398e1e49b AP_Math: AP_GeodesicGrid: change order of triangles 
- Change the order of the icosahedron triangles so that there's a uniform way of
finding the opposite triangle. The order visually still makes sense.

 - Change test to accommodate the order change.
 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa ea412ad629 AP_Math: benchmark_geodesic_grid: add benchmark 
That will help to benchmark improvements on the section search algorithm.
 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa 797a2da031 AP_Math: test_geodesic_grid: test when inclusive=true 2016-05-16 19:08:36 -03:00
Gustavo Jose de Sousa b299261ad4 AP_Math: AP_GeodesicGrid: add first implementation 
The search for the geodesic section is still naive in this version.
Additionally, add unit tests.
 2016-05-16 19:08:35 -03:00
Gustavo Jose de Sousa 3f2ad764ca AP_Math: Matrix3: add inverse() and invert() functions 
Additionally, add unit tests.
 2016-05-16 19:08:35 -03:00
Gustavo Jose de Sousa 06eea2838f AP_Math: Matrix3: add det() function 
Function to calculate determinant. Additionally, add unit tests.
 2016-05-16 19:08:35 -03:00
Gustavo Jose de Sousa 26959f1448 AP_Math: define golden ratio constant 2016-05-16 19:08:35 -03:00
dgrat 7ff8004f8f AP_Math: Replace is_zero() with a template function 
This function only makes sense for floating point types. However this
function was also used for ints.
 2016-05-16 19:08:35 -03:00
Ricardo de Almeida Gonzaga 481e3a2af6 AP_Math: Fix typos 2016-05-13 19:20:06 -03:00
Lucas De Marchi aa974399d0 AP_Math: use inline wrappers for constrain_* functions 
This avoids some warnings about "constrain_float defined but not used"
in some compilers.
 2016-05-11 22:51:19 -03:00
Lucas De Marchi bd6e268122 AP_Math: fix coding style 
- cleanup whitespace
  - function reorder
  - fix brace position
 2016-05-10 11:41:26 -03:00
Lucas De Marchi 1dbffef7ea AP_Math: remove trailing whitespace on headers 2016-05-10 11:41:26 -03:00
Lucas De Marchi ab1fa4b435 AP_Math: reorganize headers 
Sort and add pragma once where needed.
 2016-05-10 11:41:26 -03:00
dgrat 6d3b491c02 AP_Math: Replace is_equal with a type safe template function 
It makes sense to consider also other floating point types.
 2016-05-10 11:41:26 -03:00