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comparison pytouhou/utils/matrix.pyx @ 493:26c082870dcf

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Use a cached static float[16] instead of a list for default Matrix data.
author Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
date Sat, 05 Oct 2013 22:00:53 +0200
parents 878273a984c4
children 6e3b3d5d4691
comparison
equal deleted inserted replaced
492:887de1309491 493:26c082870dcf
12 ## GNU General Public License for more details. 12 ## GNU General Public License for more details.
13 ## 13 ##
14 14
15 from libc.math cimport sin, cos 15 from libc.math cimport sin, cos
16 from libc.stdlib cimport malloc, free 16 from libc.stdlib cimport malloc, free
17 from libc.string cimport memcpy
18
19
20 cdef float[16] identity
21 identity[:] = [1, 0, 0, 0,
22 0, 1, 0, 0,
23 0, 0, 1, 0,
24 0, 0, 0, 1]
17 25
18 26
19 cdef class Matrix: 27 cdef class Matrix:
20 def __init__(self, data=None): 28 def __init__(self, data=None):
21 if data is None: 29 if data is not None:
22 data = [1, 0, 0, 0, 30 for i in xrange(16):
23 0, 1, 0, 0, 31 self.data[i] = data[i]
24 0, 0, 1, 0, 32 else:
25 0, 0, 0, 1] 33 memcpy(self.data, identity, 16 * sizeof(float))
26 for i in xrange(4):
27 for j in xrange(4):
28 self.data[i*4+j] = data[4*i+j]
29 34
30 35
31 def __mul__(Matrix self, Matrix other): 36 def __mul__(Matrix self, Matrix other):
32 cdef float *d1, *d2, *d3 37 cdef float *d1, *d2, *d3
33 38