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comparison pytouhou/ui/renderer.pyx @ 370:74471afbac37

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Add a programmable pipeline renderer, and a --fixed-pipeline switch to use the old one.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Fri, 27 Jul 2012 18:43:48 +0200
parents f3099ebf4f61
children 6702bc0215dc
comparison
equal deleted inserted replaced
369:f305cdd6f6c5 370:74471afbac37
11 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the 11 ## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
12 ## GNU General Public License for more details. 12 ## GNU General Public License for more details.
13 ## 13 ##
14 14
15 from libc.stdlib cimport malloc, free 15 from libc.stdlib cimport malloc, free
16 from libc.math cimport tan
17 from math import radians
16 18
17 import ctypes 19 import ctypes
18 20
19 from struct import pack 21 from struct import pack
20 22
21 from pyglet.gl import * 23 from pyglet.gl import *
22 24
23 from .sprite cimport get_sprite_rendering_data 25 from .sprite cimport get_sprite_rendering_data
24 from .texture cimport TextureManager 26 from .texture cimport TextureManager
27 from pytouhou.utils.matrix cimport Matrix
28 from pytouhou.utils.vector import Vector, normalize, cross, dot
25 29
26 30
27 MAX_ELEMENTS = 640*4*3 31 MAX_ELEMENTS = 640*4*3
28 32
29 33
81 glBlendFunc(GL_SRC_ALPHA, (GL_ONE_MINUS_SRC_ALPHA, GL_ONE)[blendfunc]) 85 glBlendFunc(GL_SRC_ALPHA, (GL_ONE_MINUS_SRC_ALPHA, GL_ONE)[blendfunc])
82 glBindTexture(GL_TEXTURE_2D, self.texture_manager[texture_key].id) 86 glBindTexture(GL_TEXTURE_2D, self.texture_manager[texture_key].id)
83 glDrawElements(GL_QUADS, nb_indices, GL_UNSIGNED_SHORT, indices) 87 glDrawElements(GL_QUADS, nb_indices, GL_UNSIGNED_SHORT, indices)
84 88
85 89
90 cpdef ortho_2d(self, left, right, bottom, top):
91 mat = Matrix()
92 mat[0][0] = 2 / (right - left)
93 mat[1][1] = 2 / (top - bottom)
94 mat[2][2] = -1
95 mat[3][0] = -(right + left) / (right - left)
96 mat[3][1] = -(top + bottom) / (top - bottom)
97 return mat
98
99
100 cpdef look_at(self, eye, center, up):
101 eye = Vector(eye)
102 center = Vector(center)
103 up = Vector(up)
104
105 f = normalize(center - eye)
106 u = normalize(up)
107 s = normalize(cross(f, u))
108 u = cross(s, f)
109
110 return Matrix([[s[0], u[0], -f[0], 0],
111 [s[1], u[1], -f[1], 0],
112 [s[2], u[2], -f[2], 0],
113 [-dot(s, eye), -dot(u, eye), dot(f, eye), 1]])
114
115
116 cpdef perspective(self, fovy, aspect, z_near, z_far):
117 top = tan(radians(fovy / 2)) * z_near
118 bottom = -top
119 left = -top * aspect
120 right = top * aspect
121
122 mat = Matrix()
123 mat[0][0] = (2 * z_near) / (right - left)
124 mat[1][1] = (2 * z_near) / (top - bottom)
125 mat[2][2] = -(z_far + z_near) / (z_far - z_near)
126 mat[2][3] = -1
127 mat[3][2] = -(2 * z_far * z_near) / (z_far - z_near)
128 mat[3][3] = 0
129 return mat
130
131
86 cpdef setup_camera(self, dx, dy, dz): 132 cpdef setup_camera(self, dx, dy, dz):
87 glMatrixMode(GL_MODELVIEW) 133 # Some explanations on the magic constants:
88 glLoadIdentity() 134 # 192. = 384. / 2. = width / 2.
89 # Some explanations on the magic constants: 135 # 224. = 448. / 2. = height / 2.
90 # 192. = 384. / 2. = width / 2. 136 # 835.979370 = 224./math.tan(math.radians(15)) = (height/2.)/math.tan(math.radians(fov/2))
91 # 224. = 448. / 2. = height / 2. 137 # This is so that objects on the (O, x, y) plane use pixel coordinates
92 # 835.979370 = 224./math.tan(math.radians(15)) = (height/2.)/math.tan(math.radians(fov/2)) 138 return self.look_at((192., 224., - 835.979370 * dz),
93 # This is so that objects on the (O, x, y) plane use pixel coordinates 139 (192. + dx, 224. - dy, 0.), (0., -1., 0.))
94 gluLookAt(192., 224., - 835.979370 * dz,
95 192. + dx, 224. - dy, 0., 0., -1., 0.)
96 140