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annotate pytouhou/ui/sprite.pyx @ 401:3ce4065840e9

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Calculate the fog per-fragment and remove the fixed-pipeline glFog* functions; now both vertex shaders are the same.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Thu, 14 Feb 2013 20:07:23 +0100
parents c5ba11ede097
children 3a7b36324611
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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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16 from math import pi
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18 from pytouhou.utils.matrix cimport Matrix
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21 cpdef object get_sprite_rendering_data(object sprite):
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22 cdef Matrix vertmat
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24 if not sprite.changed:
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25 return sprite._rendering_data
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27 vertmat = Matrix([[-.5, .5, .5, -.5],
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28 [-.5, -.5, .5, .5],
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29 [ .0, .0, .0, .0],
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30 [ 1., 1., 1., 1.]])
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31
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32 tx, ty, tw, th = sprite.texcoords
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33 sx, sy = sprite.rescale
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34 width = sprite.width_override or (tw * sx)
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35 height = sprite.height_override or (th * sy)
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36
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37 vertmat.scale2d(width, height)
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38 if sprite.mirrored:
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39 vertmat.flip()
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40
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41 rx, ry, rz = sprite.rotations_3d
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42 if sprite.automatic_orientation:
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43 rz += pi/2. - sprite.angle
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44 elif sprite.force_rotation:
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45 rz += sprite.angle
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46
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47 if (rx, ry, rz) != (0., 0., 0.):
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48 if rx:
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49 vertmat.rotate_x(-rx)
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50 if ry:
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51 vertmat.rotate_y(ry)
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52 if rz:
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53 vertmat.rotate_z(-rz) #TODO: minus, really?
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54 if sprite.allow_dest_offset:
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55 vertmat.translate(sprite.dest_offset[0], sprite.dest_offset[1], sprite.dest_offset[2])
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56 if sprite.corner_relative_placement: # Reposition
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57 vertmat.translate(width / 2., height / 2., 0.)
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59 x_1 = 1. / sprite.anm.size[0]
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60 y_1 = 1. / sprite.anm.size[1]
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61 tox, toy = sprite.texoffsets
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62 uvs = (tx * x_1 + tox,
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63 (tx + tw) * x_1 + tox,
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64 1. - (ty * y_1 + toy),
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65 1. - ((ty + th) * y_1 + toy))
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67 (x1, x2 , x3, x4), (y1, y2, y3, y4), (z1, z2, z3, z4), _ = vertmat.data
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69 key = sprite.anm.texture, sprite.blendfunc
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70 r, g, b = sprite.color
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71 values = ((x1, y1, z1), (x2, y2, z2), (x3, y3, z3), (x4, y4, z4)), uvs, (r, g, b, sprite.alpha)
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72 sprite._rendering_data = key, values
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73 sprite.changed = False
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75 return sprite._rendering_data
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