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annotate pytouhou/ui/sprite.pyx @ 510:64a72df88de5

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Make Window able to not initialise OpenGL.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Thu, 05 Dec 2013 01:40:31 +0100
parents bfea9e9a6845
children b39ad30c6620
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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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16 from libc.math cimport M_PI as pi
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18 from pytouhou.utils.matrix cimport Matrix
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19 from pytouhou.ui.renderer cimport Texture #XXX
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20
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21
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22 cpdef object get_sprite_rendering_data(Sprite sprite):
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23 cdef Matrix vertmat
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24 cdef double tx, ty, tw, th, sx, sy, rx, ry, rz, tox, toy
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25 cdef object tmp1, tmp2
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26
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27 if not sprite.changed:
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28 return sprite._rendering_data
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30 tmp1 = .5
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31 tmp2 = -.5
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32 vertmat = Matrix([tmp2, tmp1, tmp1, tmp2,
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33 tmp2, tmp2, tmp1, tmp1,
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34 0, 0, 0, 0,
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35 1, 1, 1, 1])
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36
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37 tx, ty, tw, th = sprite.texcoords
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38 sx, sy = sprite.rescale
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39 width = sprite.width_override or (tw * sx)
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40 height = sprite.height_override or (th * sy)
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41
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42 vertmat.scale2d(width, height)
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43 if sprite.mirrored:
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44 vertmat.flip()
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45
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46 rx, ry, rz = sprite.rotations_3d
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47 if sprite.automatic_orientation:
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48 rz += pi/2. - sprite.angle
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49 elif sprite.force_rotation:
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50 rz += sprite.angle
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52 if rx:
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53 vertmat.rotate_x(-rx)
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54 if ry:
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55 vertmat.rotate_y(ry)
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56 if rz:
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57 vertmat.rotate_z(-rz) #TODO: minus, really?
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58 if sprite.allow_dest_offset:
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59 vertmat.translate(sprite.dest_offset[0], sprite.dest_offset[1], sprite.dest_offset[2])
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60 if sprite.corner_relative_placement: # Reposition
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61 vertmat.translate(width / 2, height / 2, 0)
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63 x_1 = 1 / <double>sprite.anm.size[0]
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64 y_1 = 1 / <double>sprite.anm.size[1]
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65 tox, toy = sprite.texoffsets
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66 uvs = (tx * x_1 + tox,
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67 (tx + tw) * x_1 + tox,
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68 ty * y_1 + toy,
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69 (ty + th) * y_1 + toy)
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71 key = ((<Texture>sprite.anm.texture).texture << 1) | sprite.blendfunc
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72 r, g, b = sprite.color
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73 values = tuple([x for x in vertmat.data[:12]]), uvs, (r, g, b, sprite.alpha)
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74 sprite._rendering_data = key, values
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75 sprite.changed = False
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77 return sprite._rendering_data