1 | /*************/ |
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2 | /* Writing */ |
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3 | /*************/ |
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4 | |
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5 | |
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6 | /****************************************************************************** |
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7 | Open a polygon file for writing. |
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8 | |
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9 | Entry: |
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10 | filename - name of file to read from |
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11 | nelems - number of elements in object |
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12 | elem_names - list of element names |
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13 | file_type - file type, either ascii or binary |
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14 | |
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15 | Exit: |
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16 | version - version number of PLY file |
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17 | returns a file identifier, used to refer to this file, or NULL if error |
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18 | ******************************************************************************/ |
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19 | |
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20 | PlyFile *ply_open_for_writing( |
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21 | char *filename, |
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22 | int nelems, |
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23 | char **elem_names, |
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24 | int file_type, |
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25 | float *version |
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26 | ) |
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27 | |
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28 | /****************************************************************************** |
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29 | Describe an element, including its properties and how many will be written |
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30 | to the file. |
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31 | |
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32 | Entry: |
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33 | plyfile - file identifier |
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34 | elem_name - name of element that information is being specified about |
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35 | nelems - number of elements of this type to be written |
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36 | nprops - number of properties contained in the element |
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37 | prop_list - list of properties |
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38 | ******************************************************************************/ |
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39 | |
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40 | void ply_describe_element( |
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41 | PlyFile *plyfile, |
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42 | char *elem_name, |
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43 | int nelems, |
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44 | int nprops, |
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45 | PlyProperty *prop_list |
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46 | ) |
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47 | |
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48 | /****************************************************************************** |
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49 | Signal that we've described everything a PLY file's header and that the |
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50 | header should be written to the file. |
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51 | |
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52 | Entry: |
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53 | plyfile - file identifier |
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54 | ******************************************************************************/ |
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55 | |
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56 | void ply_header_complete(PlyFile *plyfile) |
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57 | |
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58 | /****************************************************************************** |
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59 | Specify which elements are going to be written. This should be called |
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60 | before a call to the routine ply_put_elements(). |
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61 | |
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62 | Entry: |
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63 | plyfile - file identifier |
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64 | elem_name - name of element we're talking about |
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65 | ******************************************************************************/ |
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66 | |
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67 | void ply_put_elements_setup(PlyFile *plyfile, char *elem_name) |
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68 | |
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69 | /****************************************************************************** |
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70 | Write an element to the file. This routine assumes that we're |
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71 | writing the type of element specified in the last call to the routine |
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72 | ply_put_element_setup(). |
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73 | |
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74 | Entry: |
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75 | plyfile - file identifier |
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76 | elem_ptr - pointer to the element |
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77 | ******************************************************************************/ |
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78 | |
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79 | void ply_put_element(PlyFile *plyfile, void *elem_ptr) |
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80 | |
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81 | /****************************************************************************** |
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82 | Specify a comment that will be written in the header. |
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83 | |
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84 | Entry: |
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85 | plyfile - file identifier |
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86 | comment - the comment to be written |
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87 | ******************************************************************************/ |
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88 | |
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89 | void ply_put_comment(PlyFile *plyfile, char *comment) |
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90 | |
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91 | /****************************************************************************** |
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92 | Specify a piece of object information (arbitrary text) that will be written |
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93 | in the header. |
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94 | |
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95 | Entry: |
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96 | plyfile - file identifier |
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97 | obj_info - the text information to be written |
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98 | ******************************************************************************/ |
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99 | |
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100 | void ply_put_obj_info(PlyFile *plyfile, char *obj_info) |
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101 | |
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102 | |
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103 | |
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104 | |
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105 | /*************/ |
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106 | /* Reading */ |
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107 | /*************/ |
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108 | |
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109 | |
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110 | |
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111 | /****************************************************************************** |
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112 | Open a polygon file for reading. |
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113 | |
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114 | Entry: |
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115 | filename - name of file to read from |
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116 | |
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117 | Exit: |
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118 | nelems - number of elements in object |
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119 | elem_names - list of element names |
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120 | file_type - file type, either ascii or binary |
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121 | version - version number of PLY file |
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122 | returns a file identifier, used to refer to this file, or NULL if error |
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123 | ******************************************************************************/ |
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124 | |
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125 | PlyFile *ply_open_for_reading( |
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126 | char *filename, |
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127 | int *nelems, |
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128 | char ***elem_names, |
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129 | int *file_type, |
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130 | float *version |
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131 | ) |
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132 | |
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133 | /****************************************************************************** |
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134 | Get information about a particular element. |
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135 | |
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136 | Entry: |
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137 | plyfile - file identifier |
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138 | elem_name - name of element to get information about |
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139 | |
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140 | Exit: |
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141 | nelems - number of elements of this type in the file |
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142 | nprops - number of properties |
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143 | returns a list of properties |
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144 | ******************************************************************************/ |
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145 | |
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146 | PlyProperty **ply_get_element_description( |
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147 | PlyFile *plyfile, |
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148 | char *elem_name, |
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149 | int *nelems, |
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150 | int *nprops |
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151 | ) |
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152 | |
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153 | /****************************************************************************** |
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154 | Specify which properties of an element are to be returned. This should be |
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155 | called before a call to the routine ply_get_elements(). |
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156 | |
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157 | Entry: |
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158 | plyfile - file identifier |
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159 | elem_name - which element we're talking about |
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160 | nprops - number of properties |
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161 | prop_list - list of properties |
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162 | ******************************************************************************/ |
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163 | |
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164 | void ply_get_element_setup( |
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165 | PlyFile *plyfile, |
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166 | char *elem_name, |
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167 | int nprops, |
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168 | PlyProperty *prop_list |
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169 | ) |
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170 | |
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171 | /****************************************************************************** |
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172 | Read one element from the file. This routine assumes that we're reading |
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173 | the type of element specified in the last call to the routine |
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174 | ply_get_element_setup(). |
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175 | |
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176 | Entry: |
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177 | plyfile - file identifier |
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178 | elem_ptr - pointer to location where the element information should be put |
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179 | ******************************************************************************/ |
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180 | |
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181 | ply_get_element(PlyFile *plyfile, void *elem_ptr) |
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182 | |
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183 | /****************************************************************************** |
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184 | Extract the comments from the header information of a PLY file. |
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185 | |
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186 | Entry: |
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187 | plyfile - file identifier |
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188 | |
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189 | Exit: |
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190 | num_comments - number of comments returned |
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191 | returns a pointer to a list of comments |
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192 | ******************************************************************************/ |
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193 | |
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194 | char **ply_get_comments(PlyFile *plyfile, int *num_comments) |
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195 | |
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196 | /****************************************************************************** |
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197 | Extract the object information (arbitrary text) from the header information |
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198 | of a PLY file. |
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199 | |
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200 | Entry: |
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201 | plyfile - file identifier |
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202 | |
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203 | Exit: |
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204 | num_obj_info - number of lines of text information returned |
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205 | returns a pointer to a list of object info lines |
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206 | ******************************************************************************/ |
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207 | |
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208 | char **ply_get_obj_info(PlyFile *plyfile, int *num_obj_info) |
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209 | |
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210 | |
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211 | |
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212 | /*******************/ |
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213 | /* Miscellaneous */ |
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214 | /*******************/ |
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215 | |
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216 | |
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217 | |
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218 | /****************************************************************************** |
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219 | Close a PLY file. |
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220 | |
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221 | Entry: |
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222 | plyfile - identifier of file to close |
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223 | ******************************************************************************/ |
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224 | |
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225 | void ply_close(PlyFile *plyfile) |
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226 | |
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227 | /****************************************************************************** |
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228 | Compare two strings. Returns 1 if they are the same, 0 if not. |
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229 | ******************************************************************************/ |
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230 | |
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231 | int equal_strings(char *s1, char *s2) |
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232 | |
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