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annotate pytouhou/ui/background.pyx @ 262:8fa660da5f0c

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author Thibaut Girka <thib@sitedethib.com>
date Mon, 23 Jan 2012 00:58:03 +0100
parents 98c64ffcbdff
children c5ba11ede097
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1 # -*- encoding: utf-8 -*-
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2 ##
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3 ## Copyright (C) 2011 Thibaut Girka <thib@sitedethib.com>
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4 ##
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5 ## This program is free software; you can redistribute it and/or modify
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6 ## it under the terms of the GNU General Public License as published
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7 ## by the Free Software Foundation; version 3 only.
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8 ##
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9 ## This program is distributed in the hope that it will be useful,
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10 ## but WITHOUT ANY WARRANTY; without even the implied warranty of
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11 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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12 ## GNU General Public License for more details.
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13 ##
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14
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15 #TODO: lots of things
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16
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17 from struct import pack
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18 from itertools import chain
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20 from .sprite cimport get_sprite_rendering_data
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22 cpdef object get_background_rendering_data(object background):
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23 cdef float x, y, z, ox, oy, oz, ox2, oy2, oz2
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24 cdef list vertices, uvs, colors
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26 #TODO: do not cache the results, and use view frustum culling
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27 try:
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28 return background._rendering_data
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29 except AttributeError:
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30 pass
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32 vertices = []
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33 uvs = []
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34 colors = []
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36 for ox, oy, oz, model_id, model in background.object_instances:
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37 for ox2, oy2, oz2, width_override, height_override, sprite in model:
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38 #TODO: view frustum culling
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39 key, (vertices2, uvs2, colors2) = get_sprite_rendering_data(sprite)
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40 vertices.extend([(x + ox + ox2, y + oy + oy2, z + oz + oz2)
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41 for x, y, z in vertices2])
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42 uvs.extend(uvs2)
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43 colors.extend(colors2)
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44
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45 nb_vertices = len(vertices)
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46 vertices_s = pack(str(3 * nb_vertices) + 'f', *chain(*vertices))
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47 uvs_s = pack(str(2 * nb_vertices) + 'f', *uvs)
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48 colors_s = pack(str(4 * nb_vertices) + 'B', *colors)
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50 background._rendering_data = [(key, (nb_vertices, vertices_s, uvs_s, colors_s))]
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52 return background._rendering_data
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