Mercurial > touhou
annotate pytouhou/utils/matrix.pyx @ 701:b6c351ca0a35
anm0: return the nom IResult and the list of Anm0s.
author | Emmanuel Gil Peyrot <linkmauve@linkmauve.fr> |
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date | Fri, 23 Aug 2019 15:34:03 +0200 |
parents | e5361b74b9ad |
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rev | line source |
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52
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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 from libc.math cimport sin, cos |
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16 from libc.stdlib cimport malloc, free |
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17 from libc.string cimport memcpy |
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18 |
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19 |
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20 cdef Matrix identity |
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21 identity = Matrix(1, 0, 0, 0, |
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22 0, 1, 0, 0, |
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23 0, 0, 1, 0, |
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24 0, 0, 0, 1) |
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25 |
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26 |
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27 cdef Matrix *new_matrix(Matrix *data) nogil: |
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28 mat = <Matrix*> malloc(sizeof(Matrix)) |
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29 memcpy(mat, data, sizeof(Matrix)) |
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30 return mat |
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31 |
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32 |
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33 cdef Matrix *new_identity() nogil: |
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34 return new_matrix(&identity) |
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35 |
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36 |
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37 cdef void mul(Matrix *mat1, Matrix *mat2) nogil: |
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38 cdef float *d3 |
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39 cdef Matrix out |
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40 |
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41 d1 = <float*>mat1 |
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42 d2 = <float*>mat2 |
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43 d3 = <float*>&out |
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44 for i in range(4): |
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45 for j in range(4): |
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46 d3[4*i+j] = 0 |
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47 for k in range(4): |
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48 d3[4*i+j] += d1[4*i+k] * d2[4*k+j] |
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49 memcpy(mat1, &out, sizeof(Matrix)) |
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50 |
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51 |
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52 cdef void flip(Matrix *mat) nogil: |
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53 data = <float*>mat |
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54 for i in range(4): |
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55 data[i] = -data[i] |
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56 |
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57 |
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58 cdef void scale2d(Matrix *mat, float x, float y) nogil: |
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59 data = <float*>mat |
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60 for i in range(4): |
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61 data[ i] *= x |
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62 data[4+i] *= y |
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63 |
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64 |
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65 cdef void translate(Matrix *mat, float[3] offset) nogil: |
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66 cdef float item[3] |
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67 |
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68 data = <float*>mat |
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69 for i in range(3): |
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70 item[i] = data[12+i] * offset[i] |
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71 |
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72 for i in range(3): |
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73 for j in range(4): |
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74 data[4*i+j] += item[i] |
31 | 75 |
76 | |
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77 cdef void translate2d(Matrix *mat, float x, float y) nogil: |
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78 cdef float[3] offset |
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79 |
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80 offset[0] = x |
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81 offset[1] = y |
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82 offset[2] = 0 |
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83 |
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84 translate(mat, offset) |
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85 |
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86 |
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87 cdef void rotate_x(Matrix *mat, float angle) nogil: |
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88 cdef float cos_a, sin_a |
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89 cdef float lines[8] |
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90 |
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91 data = <float*>mat |
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92 cos_a = cos(angle) |
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93 sin_a = sin(angle) |
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94 for i in range(8): |
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95 lines[i] = data[i+4] |
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96 for i in range(4): |
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97 data[4+i] = cos_a * lines[i] - sin_a * lines[4+i] |
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98 data[8+i] = sin_a * lines[i] + cos_a * lines[4+i] |
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99 |
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100 |
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101 cdef void rotate_y(Matrix *mat, float angle) nogil: |
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102 cdef float cos_a, sin_a |
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103 cdef float lines[8] |
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104 |
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105 data = <float*>mat |
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106 cos_a = cos(angle) |
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107 sin_a = sin(angle) |
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108 for i in range(4): |
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109 lines[i] = data[i] |
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110 lines[i+4] = data[i+8] |
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111 for i in range(4): |
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112 data[ i] = cos_a * lines[i] + sin_a * lines[4+i] |
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113 data[8+i] = -sin_a * lines[i] + cos_a * lines[4+i] |
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114 |
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115 |
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116 cdef void rotate_z(Matrix *mat, float angle) nogil: |
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117 cdef float cos_a, sin_a |
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118 cdef float lines[8] |
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119 |
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120 data = <float*>mat |
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121 cos_a = cos(angle) |
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122 sin_a = sin(angle) |
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123 for i in range(8): |
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124 lines[i] = data[i] |
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125 for i in range(4): |
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126 data[ i] = cos_a * lines[i] - sin_a * lines[4+i] |
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Emmanuel Gil Peyrot <linkmauve@linkmauve.fr>
parents:
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127 data[4+i] = sin_a * lines[i] + cos_a * lines[4+i] |