[PATCH 1/1] d3dx9: Complete test for D3DXCreateSphere.
Henri Verbeet
hverbeet at gmail.com
Fri Jul 23 08:09:51 CDT 2010
2010/7/23 Misha Koshelev <misha680 at gmail.com>:
> Please find attached the relevant data.
>
> I do not see a way from this data to generate the faces a vertex is part of that would be simpler
> than what I am doing for indices.
>
Well, if you look at e.g. the data for slices 6, stacks 7, there
indices are certainly very regular:
vertex 0:
[0 (0) 1 (0) 2 (0) 3 (0) 4 (0) 5 (0)]
vertex 1:
[5 (1) 0 (2)] [16 (1) 17 (0) 6 (0)]
vertex 2:
[0 (1) 1 (2)] [ 6 (1) 7 (0) 8 (0)]
vertex 3:
[1 (1) 2 (2)] [ 8 (1) 9 (0) 10 (0)]
vertex 4:
[2 (1) 3 (2)] [10 (1) 11 (0) 12 (0)]
vertex 5:
[3 (1) 4 (2)] [12 (1) 13 (0) 14 (0)]
vertex 6:
[4 (1) 5 (2)] [14 (1) 15 (0) 16 (0)]
vertex 7:
[17 (1) 6 (2) 7 (2)] [28 (1) 29 (0) 18 (0)]
vertex 8:
[ 7 (1) 8 (2) 9 (2)] [18 (1) 19 (0) 20 (0)]
vertex 9:
[ 9 (1) 10 (2) 11 (2)] [20 (1) 21 (0) 22 (0)]
vertex 10:
[11 (1) 12 (2) 13 (2)] [22 (1) 23 (0) 24 (0)]
vertex 11:
[13 (1) 14 (2) 15 (2)] [24 (1) 25 (0) 26 (0)]
vertex 12:
[15 (1) 16 (2) 17 (2)] [26 (1) 27 (0) 28 (0)]
[...]
vertex 25:
[53 (1) 42 (2) 43 (2)] [64 (1) 65 (0) 54 (0)]
vertex 26:
[43 (1) 44 (2) 45 (2)] [54 (1) 55 (0) 56 (0)]
vertex 27:
[45 (1) 46 (2) 47 (2)] [56 (1) 57 (0) 58 (0)]
vertex 28:
[47 (1) 48 (2) 49 (2)] [58 (1) 59 (0) 60 (0)]
vertex 29:
[49 (1) 50 (2) 51 (2)] [60 (1) 61 (0) 62 (0)]
vertex 30:
[51 (1) 52 (2) 53 (2)] [62 (1) 63 (0) 64 (0)]
vertex 31:
[65 (1) 54 (2) 55 (2)] [71 (1) 66 (0)]
vertex 32:
[55 (1) 56 (2) 57 (2)] [66 (1) 67 (0)]
vertex 33:
[57 (1) 58 (2) 59 (2)] [67 (1) 68 (0)]
vertex 34:
[59 (1) 60 (2) 61 (2)] [68 (1) 69 (0)]
vertex 35:
[61 (1) 62 (2) 63 (2)] [69 (1) 70 (0)]
vertex 36:
[63 (1) 64 (2) 65 (2)] [70 (1) 71 (0)]
vertex 37:
[66 (2) 67 (2) 68 (2) 69 (2) 70 (2) 71 (2)]
Note that since these are rings, you should be looking at e.g. the "5
(1)" index for vertex 1 as "-1 % slices (1)", etc.
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