Mercurial > traipse_dev

annotate orpg/mapper/map_utils.py @ 93:04a6bf54f258 beta

Find changesets by keywords (author, files, the commit message), revision number or hash, or revset expression.
Traipse Beta 'OpenRPG' {090919-01} Traipse is a distribution of OpenRPG that is designed to be easy to setup and go. Traipse also makes it easy for developers to work on code without fear of sacrifice. 'Ornery-Orc' continues the trend of 'Grumpy' and adds fixes to the code. 'Ornery-Orc''s main goal is to offer more advanced features and enhance the productivity of the user. Update Summary: 00: Adds menu changes to draw attention to important updates, errors, or other events. (image info coming soon) Traipse URL is not included in the repos tab and is set as default. Fixes Copy for Windows and Linux (finally!!) users. Fixes incomplete update to Grid and List nodes. Fixes incomplete update to Chat Commands. Fixes problems with Remote Image Upload. Fixes Drop and Drag of Minis to Map. CherryPy can now use any image in the webfiles/ folder and sub-folders. CherryPy can now Drop and Drag Minis to the Map. Minor changes to Update Manager's GUI. Expert recommendation warning added to Revision Update. Step down compatibility with open_rpg & component added to orpgCore. Using majority of 'Grumpy' network folder to correct server lag. 01: Where is the update?
author sirebral
date Sat, 19 Sep 2009 06:58:26 -0500
parents 449a8900f9ac
children
rev   line source
71
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
1 """
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
2 file: map_utils.py
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
3
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
4 This file contains generic utility functions
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
5 for use in the openrpg mapping system
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
6 """
0
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
7
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
8 import math
71
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
9 """
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
10 distance_between()
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
11 Returns the distance between two points
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
12 """
0
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
13 def distance_between( x1, y1, x2, y2 ):
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
14 "Returns the distance between two points"
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
15 dx = x2 - x1
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
16 dy = y2 - y1
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
17 return math.sqrt( dx*dx + dy*dy )
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
18
71
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
19 """
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
20 proximity_test()
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
21 Tests if 'test_point' (T) is close (within 'threshold' units) to the
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
22 line segment 'start_point' to 'end_point' (PQ).
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
23
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
24 The closest point (R) to T on the line PQ is given by:
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
25 R = P + u (Q - P)
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
26 TR is perpendicular to PQ so:
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
27 (T - R) dot (Q - P) = 0
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
28 Solving these two equations gives the equation for u (see below).
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
29
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
30 If u < 0 or u > 1 then R is not within the line segment and we simply
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
31 test against point P or Q.
449a8900f9ac Code refining almost completed, for this round. Some included files are still in need of some clean up, but this is test worthy.
sirebral
parents: 20
diff changeset
32 """
0
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
33 def proximity_test( start_point, end_point, test_point, threshold ):
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
34 "Test if a point is close to a line segment"
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
35 x1,y1 = start_point
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
36 x2,y2 = end_point
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
37 xt,yt = test_point
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
38 x1 = float(x1)
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
39 x2 = float(x2)
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
40 y1 = float(y1)
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
41 y2 = float(y2)
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
42 xt = float(xt)
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
43 yt = float(yt)
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
44
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
45 # Coincident points?
20
072ffc1d466f 2nd attempt. Still untested.
sirebral
parents: 0
diff changeset
46 if x1 == x2 and y1 == y2: d = distance_between(xt, yt, x1, y1)
0
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
47 else:
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
48 dx = x2 - x1
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
49 dy = y2 - y1
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
50 u = ((xt - x1) * dx + (yt - y1) * dy) / (dx*dx + dy*dy)
20
072ffc1d466f 2nd attempt. Still untested.
sirebral
parents: 0
diff changeset
51 if u < 0: d = distance_between(xt, yt, x1, y1)
072ffc1d466f 2nd attempt. Still untested.
sirebral
parents: 0
diff changeset
52 elif u > 1: d = distance_between(xt, yt, x2, y2)
0
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
53 else:
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
54 xr = x1 + u * dx
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
55 yr = y1 + u * dy
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
56 d = distance_between(xt, yt, xr, yr)
4385a7d0efd1 Deleted and repushed it with the 'grumpy-goblin' branch. I forgot a y
sirebral
parents:
diff changeset
57 return d <= threshold