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Changes for page Ball Physics

Last modified by Soeren Domroes on 2025/01/30 12:18
From version 5.1
edited by stu104225
on 2020/03/04 17:18
Change comment: There is no comment for this version
To version 3.1
edited by stu104225
on 2020/03/03 18:55
Change comment: There is no comment for this version

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Content
... ... @@ -1,119 +3,55 @@
1 -The **ball physics model** is meant to do things ... [TODO]
2 -
3 3  \\
4 4  
3 +== Task ==
5 5  
5 +The ball physics model is meant to do things ...
6 6  
7 -{{toc/}}
7 +\\
8 8  
9 -== Ball trajectory ==
9 +== Configuration ==
10 10  
11 -----
11 +=== Points of interest ===
12 12  
13 -The trajectory of a ball can be modeled to be parabolic.
14 -\\\\\\like so: .... [TODO]
13 +\\
15 15  
16 -== Configuration ==
15 +[[image:attach:physics_points.png]]
17 17  
18 -----
17 +=== Flipper range ===
19 19  
20 -=== Prediction parameters ===
19 +\\
21 21  
22 -|=(((
23 -Parameter
24 -)))|=(((
25 -Description
26 -)))|=(((
27 -Default value
28 -)))
29 -|(((
30 -PREDICTION_FRAME
31 -)))|(((
32 -window size for prediction - How far
21 +\\
33 33  
34 -into the future are predctions calculated at most.
35 -)))|(((
36 -70ms
37 -)))
38 -|(((
39 -PREDICTION_STEP_SIZE
40 -)))|(((
41 -size of the steps for the forward search
42 -)))|(((
43 -10ms
44 -)))
45 -|(((
46 -REFINEMENT_FACTOR
47 -)))|(((
48 -The prediction step size for the reverse search is
49 -PREDICTION_STEP_SIZE divided by REFINEMENT_FACTOR.
50 -)))|(((
51 -10
52 -)))
23 +\\
53 53  
54 -with the default values up to 7 predictions are calculated if the ball is not predicted to be in flipper range roughly within the next two frames.
55 -
56 56  \\
57 57  
58 -So this number is also the worst case number of predictions calculated during the reverse search part of the prediction process.
27 +[[image:attach:physics2.png]]
59 59  
60 60  \\
61 61  
62 -=== Flipper range ===
31 +=== Inlane Area ===
63 63  
64 -The model of the area, where the the flippers can hit a ball is computed from a set of five points. These points are set to real world coordinates in meter
33 +[[image:attach:physics_inlane.png]]
65 65  
66 -and should not need further adjustment after the camera is correctly calibrated (see [[doc:World Coordinate System]]).
35 +\\
67 67  
68 -The values for the left flipper are set to be symmetrical.
37 +=== Prediction parameters ===
69 69  
70 -[[image:attach:physics_points.png]]
39 +\\
71 71  
72 -(% class="wrapped" %)
73 -|=(((
74 -Point#
75 -)))|=(((
76 -Description
77 -)))
78 -|(((
79 -1
80 -)))|(((
81 -center point of the circle that the flippers tip moves o
82 -)))
83 -|(((
84 -2
85 -)))|(((
86 -highest point a ball can be at when it hits the resting flipper
87 -)))
88 -|(((
89 -3
90 -)))|(((
91 -lowest point a ball can be at when it hits the resting flipper
92 -)))
93 -|(((
94 -4
95 -)))|(((
96 -lowest point a ball can be at when it hits the fully triggered flipper
97 -)))
98 -|(((
99 -5
100 -)))|(((
101 -highest point a ball can be at when it hits the fully triggered flipper
102 -)))
41 +\\
103 103  
104 104  \\
105 105  
106 -From these points an area, where the ball is deemed to be hittable, is computed.
45 +\\
107 107  
108 -[[image:attach:physics2.png]]
47 +\\
109 109  
110 110  \\
111 111  
112 -=== Inlane Area ===
51 +\\
113 113  
114 -Since the trajectory prediction does not consider collisions in general, we need a different kind of predictions for the inlanes,
115 -i.e. the path feeding a falling ball from the playfield to the flippers, behind the slingshot.
116 -A ball is considered to be in an inlane, when it is in a rectangualar area, with one edge given by the begin of the flipper
117 -and the other by a point at highest, outermost position of the angled part of the inlane.
53 +\\
118 118  
119 -[[image:attach:physics_inlane.png]]
55 +\\
Confluence.Code.ConfluencePageClass[0]
Id
... ... @@ -1,1 +1,1 @@
1 -71401643
1 +71401639
URL
... ... @@ -1,1 +1,1 @@
1 -https://rtsys.informatik.uni-kiel.de/confluence//wiki/spaces/PP18/pages/71401643/Ball Physics
1 +https://rtsys.informatik.uni-kiel.de/confluence//wiki/spaces/PP18/pages/71401639/Ball Physics