Mercurial > hg > orthanc-stone
annotate OrthancStone/Resources/Computations/IntersectSegmentAndHorizontalLine.py @ 1930:82024e1f304f
todo
author | Sebastien Jodogne <s.jodogne@gmail.com> |
---|---|
date | Fri, 25 Mar 2022 16:56:10 +0100 |
parents | 7053b8a0aaec |
children | 07964689cb0b |
rev | line source |
---|---|
132
35c2b85836ce
fix rtstruct projections
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
1 #!/usr/bin/env python |
35c2b85836ce
fix rtstruct projections
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
2 |
1589
8c5f9864545f
adding missing headers
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1512
diff
changeset
|
3 # Stone of Orthanc |
8c5f9864545f
adding missing headers
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1512
diff
changeset
|
4 # Copyright (C) 2012-2016 Sebastien Jodogne, Medical Physics |
8c5f9864545f
adding missing headers
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1512
diff
changeset
|
5 # Department, University Hospital of Liege, Belgium |
1871
7053b8a0aaec
upgrade to year 2022
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1870
diff
changeset
|
6 # Copyright (C) 2017-2022 Osimis S.A., Belgium |
7053b8a0aaec
upgrade to year 2022
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1870
diff
changeset
|
7 # Copyright (C) 2021-2022 Sebastien Jodogne, ICTEAM UCLouvain, Belgium |
1589
8c5f9864545f
adding missing headers
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1512
diff
changeset
|
8 # |
8c5f9864545f
adding missing headers
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1512
diff
changeset
|
9 # This program is free software: you can redistribute it and/or |
1598
8563ea5d8ae4
relicensing some files, cf. osimis bm26 and chu agreement on 2020-05-20
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1589
diff
changeset
|
10 # modify it under the terms of the GNU Lesser General Public License |
1589
8c5f9864545f
adding missing headers
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1512
diff
changeset
|
11 # as published by the Free Software Foundation, either version 3 of |
8c5f9864545f
adding missing headers
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1512
diff
changeset
|
12 # the License, or (at your option) any later version. |
8c5f9864545f
adding missing headers
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1512
diff
changeset
|
13 # |
8c5f9864545f
adding missing headers
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1512
diff
changeset
|
14 # This program is distributed in the hope that it will be useful, but |
8c5f9864545f
adding missing headers
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1512
diff
changeset
|
15 # WITHOUT ANY WARRANTY; without even the implied warranty of |
1598
8563ea5d8ae4
relicensing some files, cf. osimis bm26 and chu agreement on 2020-05-20
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1589
diff
changeset
|
16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU |
8563ea5d8ae4
relicensing some files, cf. osimis bm26 and chu agreement on 2020-05-20
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1589
diff
changeset
|
17 # Lesser General Public License for more details. |
1589
8c5f9864545f
adding missing headers
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1512
diff
changeset
|
18 # |
1598
8563ea5d8ae4
relicensing some files, cf. osimis bm26 and chu agreement on 2020-05-20
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1589
diff
changeset
|
19 # You should have received a copy of the GNU Lesser General Public |
8563ea5d8ae4
relicensing some files, cf. osimis bm26 and chu agreement on 2020-05-20
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1589
diff
changeset
|
20 # License along with this program. If not, see |
8563ea5d8ae4
relicensing some files, cf. osimis bm26 and chu agreement on 2020-05-20
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1589
diff
changeset
|
21 # <http://www.gnu.org/licenses/>. |
1589
8c5f9864545f
adding missing headers
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1512
diff
changeset
|
22 |
8c5f9864545f
adding missing headers
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
1512
diff
changeset
|
23 |
132
35c2b85836ce
fix rtstruct projections
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
24 from sympy import * |
35c2b85836ce
fix rtstruct projections
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
25 |
35c2b85836ce
fix rtstruct projections
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
26 # Intersection between the 2D line segment (prevX,prevY)-(curX,curY) and the |
35c2b85836ce
fix rtstruct projections
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
27 # horizontal line "y = y0" using homogeneous coordinates |
35c2b85836ce
fix rtstruct projections
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
28 |
35c2b85836ce
fix rtstruct projections
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
29 prevX, prevY, curX, curY, y0 = symbols('prevX prevY curX curY y0') |
35c2b85836ce
fix rtstruct projections
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
30 |
35c2b85836ce
fix rtstruct projections
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
31 p1 = Matrix([prevX, prevY, 1]) |
35c2b85836ce
fix rtstruct projections
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
32 p2 = Matrix([curX, curY, 1]) |
35c2b85836ce
fix rtstruct projections
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
33 l1 = p1.cross(p2) |
35c2b85836ce
fix rtstruct projections
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
34 |
35c2b85836ce
fix rtstruct projections
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
35 h1 = Matrix([0, y0, 1]) |
35c2b85836ce
fix rtstruct projections
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
36 h2 = Matrix([1, y0, 1]) |
35c2b85836ce
fix rtstruct projections
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
37 l2 = h1.cross(h2) |
35c2b85836ce
fix rtstruct projections
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
38 |
35c2b85836ce
fix rtstruct projections
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
39 a = l1.cross(l2) |
35c2b85836ce
fix rtstruct projections
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
40 |
35c2b85836ce
fix rtstruct projections
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
41 #pprint(cse(a/a[2], symbols = symbols('a b'))) |
35c2b85836ce
fix rtstruct projections
Sebastien Jodogne <s.jodogne@gmail.com>
parents:
diff
changeset
|
42 pprint(a / a[2]) |