Mercurial > MadButterfly

annotate tools/gen_precomputed_tabs.py @ 1172:178b126edd2c

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Implement the correct normal tween. We will duplicate the node in the start scene. Insted of deleting all nodes which is not in the stop scene, we should delete the object which is not in the start scene instead. If we delete objecvt the the stop scene, the object should appear until we reach the stop scene.
author wycc
date Thu, 30 Dec 2010 11:50:02 +0800
parents bd0cfb8666b8
children
rev   line source
1129
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
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1 #!/usr/bin/env python
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2 from math import pi, sin, cos, sqrt
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3
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4 # #define FRACTION_SHIFT 10
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5 #
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6 # #define REF_RADIUS_SHIFT 10
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7 # #define SLOPE_TAB_SZ 128
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8 # #define ARC_RADIUS_RATIO_TAB_SZ 128
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9 # #define ARC_RADIUS_FACTOR_TAB_SZ ARC_RADIUS_RATIO_TAB_SZ
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10 # #define SIN_TAB_SZ 256
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11 # static int slope_tab[SLOPE_TAB_SZ];
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12 # static int center_shift_tab[SLOPE_TAB_SZ][2];
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13 # static int vector_len_factor_tab[SLOPE_TAB_SZ];
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14 # static int arc_radius_ratio_tab[ARC_RADIUS_RATIO_TAB_SZ];
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15 # static int arc_radius_factor_tab[ARC_RADIUS_FACTOR_TAB_SZ];
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16 # static int sin_tab[SIN_TAB_SZ];
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17
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18 class tabs_generator(object):
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19 _fraction_shift = 10
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20 _ref_radius_shift = 10
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21 _slope_tab_sz = 128
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22 _arc_radius_ratio_tab_sz = 256
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23 _arc_radius_factor_tab_sz = 256
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24 _sin_tab_sz = 256
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25
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26 def gen_slope_tab(self):
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27 lines = []
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28 line = '''\
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29 /*! \\brief The table used to map a slope to an index.
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30 *
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31 * The index is used to be a key in other tables.
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32 * The table is an array of slope values for vectors in 0~(PI/4)
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33 * direction.
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34 */\
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35 '''
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36 lines.append(line)
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37 line = 'int slope_tab[SLOPE_TAB_SZ] = {'
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38 lines.append(line)
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39
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40 factor = 1 << self._fraction_shift
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41
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42 for i in range(self._slope_tab_sz):
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43 angle = pi / 4 * i / (self._slope_tab_sz - 1)
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44 slope = int(sin(angle) / cos(angle) * factor)
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45 line = ' %d,' % (slope)
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46 lines.append(line)
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47 pass
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48
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49 line = ' };'
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50 lines.append(line)
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51 return lines
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52
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53 def gen_center_shift_tab(self):
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54 lines = []
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55 line = '''\
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56 /*! \\brief The table maps the slope of an arc to the factors of shifting.
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57 *
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58 * Every mapped slope is associated with two factors for x and y
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59 * axis respective. The are multiplied with length of the arc to
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60 * get shifting value in x and y axis direction.
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61 */\
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62 '''
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63 lines.append(line)
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64 line = 'int center_shift_tab[SLOPE_TAB_SZ][2] = {'
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65 lines.append(line)
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66
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67 radius = 1 << (self._ref_radius_shift + self._fraction_shift)
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68
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69 for i in range(self._slope_tab_sz):
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70 angle = pi / 4 * i / (self._slope_tab_sz - 1) + pi / 2
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71 x = int(cos(angle) * radius)
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72 y = int(sin(angle) * radius)
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73 line = ' {%d, %d},' % (x, y)
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74 lines.append(line)
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75 pass
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76
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77 line = ' };'
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78 lines.append(line)
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79 return lines
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80
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81 def gen_vector_len_factor_tab(self):
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82 lines = []
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83 line = '''\
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84 /*! \\brief The table maps a slope to a lenght factor for a vector.
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85 *
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86 * The factor is used to multipled with one of axis values
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87 * to get the lenght of the vector.
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88 * The range of mapped slopes are 0~(PI/4).
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89 */\
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90 '''
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91 lines.append(line)
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92 line = 'int vector_len_factor_tab[SLOPE_TAB_SZ] = {'
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93 lines.append(line)
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94
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95 frac_factor = 1 << self._fraction_shift
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96
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97 for i in range(self._slope_tab_sz):
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98 angle = pi / 4 * i / (self._slope_tab_sz - 1)
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99 factor = int((1 / cos(angle)) * frac_factor)
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100 line = ' %d,' % (factor)
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101 lines.append(line)
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102 pass
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103
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104 line = ' };'
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105 lines.append(line)
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106 return lines
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107
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108 def gen_arc_radius_ratio_tab(self):
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109 lines = []
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110 line = '''\
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111 /*! \\brief A table of ratio from an arc to its radius.
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112 *
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113 * It is to find an index for a given ratio value.
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114 */\
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115 '''
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116 lines.append(line)
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117 line = 'int arc_radius_ratio_tab[ARC_RADIUS_RATIO_TAB_SZ] = {'
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118 lines.append(line)
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119
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120 frac_factor = 1 << self._fraction_shift
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121
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122 for i in range(self._arc_radius_ratio_tab_sz):
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123 arc_ratio = 2.0 * i / (self._arc_radius_ratio_tab_sz - 1)
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124 arc_ratio = int(arc_ratio * frac_factor)
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125 line = ' %d,' % (arc_ratio)
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126 lines.append(line)
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127 pass
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128
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129 line = ' };'
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130 lines.append(line)
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131 return lines
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132
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133 def gen_arc_radius_factor_tab(self):
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134 lines = []
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135 line = '''\
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136 /*! \\brief The table maps an arc-radius ratio to a distance factor.
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
137 *
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Thinker K.F. Li <thinker@codemud.net>
parents:
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138 * The factor is multiplied with radius to get distance of arc and
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Thinker K.F. Li <thinker@codemud.net>
parents:
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139 * center. It is in the order of arc_radius_ratio_tab.
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Thinker K.F. Li <thinker@codemud.net>
parents:
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140 */\
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
141 '''
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
142 lines.append(line)
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Thinker K.F. Li <thinker@codemud.net>
parents:
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143 line = 'int arc_radius_factor_tab[ARC_RADIUS_FACTOR_TAB_SZ] = {'
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
144 lines.append(line)
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Thinker K.F. Li <thinker@codemud.net>
parents:
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145
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
146 frac_factor = 1 << self._fraction_shift
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Thinker K.F. Li <thinker@codemud.net>
parents:
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147
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Thinker K.F. Li <thinker@codemud.net>
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148 for i in range(self._arc_radius_factor_tab_sz):
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Thinker K.F. Li <thinker@codemud.net>
parents:
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149 arc = 2.0 * i / (self._arc_radius_factor_tab_sz - 1)
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Thinker K.F. Li <thinker@codemud.net>
parents:
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150 factor = int(sqrt(1 - (arc / 2) ** 2) * frac_factor)
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Thinker K.F. Li <thinker@codemud.net>
parents:
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151 line = ' %d,' % (factor)
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
152 lines.append(line)
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Thinker K.F. Li <thinker@codemud.net>
parents:
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153 pass
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
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154
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Thinker K.F. Li <thinker@codemud.net>
parents:
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155 line = ' };'
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
156 lines.append(line)
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Thinker K.F. Li <thinker@codemud.net>
parents:
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157 return lines
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Thinker K.F. Li <thinker@codemud.net>
parents:
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158
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Thinker K.F. Li <thinker@codemud.net>
parents:
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159 def gen_sin_tab(self):
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Thinker K.F. Li <thinker@codemud.net>
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160 lines = []
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Thinker K.F. Li <thinker@codemud.net>
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161 line = '/*! \\brief A table of sin() values */'
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Thinker K.F. Li <thinker@codemud.net>
parents:
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162 lines.append(line)
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Thinker K.F. Li <thinker@codemud.net>
parents:
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163 line = 'int sin_tab[SIN_TAB_SZ] = {'
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
164 lines.append(line)
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Thinker K.F. Li <thinker@codemud.net>
parents:
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165
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Thinker K.F. Li <thinker@codemud.net>
parents:
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166 frac_factor = 1 << self._fraction_shift
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Thinker K.F. Li <thinker@codemud.net>
parents:
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167
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parents:
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168 for i in range(self._sin_tab_sz):
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parents:
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169 angle = i * pi / 2 / (self._sin_tab_sz - 1)
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parents:
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170 _sin = int(sin(angle) * frac_factor)
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Thinker K.F. Li <thinker@codemud.net>
parents:
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171 line = ' %d,' % (_sin)
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
172 lines.append(line)
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Thinker K.F. Li <thinker@codemud.net>
parents:
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173 pass
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
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174
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Thinker K.F. Li <thinker@codemud.net>
parents:
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175 line = ' };'
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Thinker K.F. Li <thinker@codemud.net>
parents:
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176 lines.append(line)
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Thinker K.F. Li <thinker@codemud.net>
parents:
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177 return lines
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Thinker K.F. Li <thinker@codemud.net>
parents:
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178
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Thinker K.F. Li <thinker@codemud.net>
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179 def gen_definition(self, out):
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Thinker K.F. Li <thinker@codemud.net>
parents:
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180 line = '/* This file is generated by tools/gen_precomputed_tabs.py */'
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Thinker K.F. Li <thinker@codemud.net>
parents:
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181 print >> out, line
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Thinker K.F. Li <thinker@codemud.net>
parents:
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182 print >> out
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Thinker K.F. Li <thinker@codemud.net>
parents:
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183 lines = self.gen_slope_tab()
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Thinker K.F. Li <thinker@codemud.net>
parents:
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184 print >> out, '\n'.join(lines)
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Thinker K.F. Li <thinker@codemud.net>
parents:
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185 print >> out
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Thinker K.F. Li <thinker@codemud.net>
parents:
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186 print >> out
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Thinker K.F. Li <thinker@codemud.net>
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187 lines = self.gen_center_shift_tab()
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Thinker K.F. Li <thinker@codemud.net>
parents:
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188 print >> out, '\n'.join(lines)
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
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189 print >> out
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
190 print >> out
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
191 lines = self.gen_vector_len_factor_tab()
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
192 print >> out, '\n'.join(lines)
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
193 print >> out
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
194 print >> out
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
195 lines = self.gen_arc_radius_ratio_tab()
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
196 print >> out, '\n'.join(lines)
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
197 print >> out
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
198 print >> out
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
199 lines = self.gen_arc_radius_factor_tab()
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
200 print >> out, '\n'.join(lines)
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
201 print >> out
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
202 print >> out
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
203 lines = self.gen_sin_tab()
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
204 print >> out, '\n'.join(lines)
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
205 print >> out
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
206 pass
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
207
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
208 def gen_declaration(self, out):
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
209 line = '''\
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
210 #define FRACTION_SHIFT %d
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
211
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
212 #define REF_RADIUS_SHIFT %d
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
213 #define SLOPE_TAB_SZ %d
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
214 #define ARC_RADIUS_RATIO_TAB_SZ %d
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Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
215 #define ARC_RADIUS_FACTOR_TAB_SZ %d
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
216 #define SIN_TAB_SZ %d
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
217
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
218 extern int slope_tab[SLOPE_TAB_SZ];
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
219 extern int center_shift_tab[SLOPE_TAB_SZ][2];
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
220 extern int vector_len_factor_tab[SLOPE_TAB_SZ];
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
221 extern int arc_radius_ratio_tab[ARC_RADIUS_RATIO_TAB_SZ];
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
222 extern int arc_radius_factor_tab[ARC_RADIUS_FACTOR_TAB_SZ];
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
223 extern int sin_tab[SIN_TAB_SZ];
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
224 '''
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
225 line = line % (self._fraction_shift, self._ref_radius_shift,
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
226 self._slope_tab_sz, self._arc_radius_ratio_tab_sz,
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
227 self._arc_radius_factor_tab_sz, self._sin_tab_sz)
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
228 print >> out, line
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
229 pass
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
230 pass
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
231
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
232 if __name__ == '__main__':
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
233 import sys
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
234
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
235 def usage(progname):
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
236 print >> sys.stderr, 'Usage: %s <C file> <header file>' % (progname)
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
237 sys.exit(255)
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
238 pass
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
239
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
240 if len(sys.argv) != 3:
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
241 usage(sys.argv[0])
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
242 pass
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
243
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
244 cfile = sys.argv[1]
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
245 hfile = sys.argv[2]
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
246
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
247 gen = tabs_generator()
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
248
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
249 cout = file(cfile, 'w+')
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
250 print >> cout, '#include "%s"' % (hfile)
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
251 print >> cout
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
252 gen.gen_definition(cout)
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
253 cout.close()
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
254
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
255 hout = file(hfile, 'w+')
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
256 sentinel = '__' + hfile.upper().replace('.', '_') + '_'
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
257 print >> hout, '#ifndef %s' % (sentinel)
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
258 print >> hout, '#define %s' % (sentinel)
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
259 print >> hout
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
260 gen.gen_declaration(hout)
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
261 print >> hout, '#endif /* %s */' % (sentinel)
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
262 hout.close()
eca737d33a18 Improve performance of function to compute center of an arc.
Thinker K.F. Li <thinker@codemud.net>
parents:
diff changeset
263 pass