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| ../109-3/109-3-ReadLine.c | 109-4-ReadModel.c | |||
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| 78 lines 2197 bytes Last modified : Mon Nov 7 11:16:16 2011 | 191 lines 6221 bytes Last modified : Mon Nov 7 22:21:22 2011 | |||
| 1 | // Keisanki Joron 2 (Introduction to Computing II) | 1 | // Keisanki Joron 2 (Introduction to Computing II) | |
| 2 | // Dept. of Engineering Systems, University of Tsukuba | 2 | // Dept. of Engineering Systems, University of Tsukuba | |
| 3 | // [UTF-8 / Unix] | 3 | // [UTF-8 / Unix] | |
| 4 | 4 | |||
| 5 | // 2011/11/07 kameda[at]iit.tsukuba.ac.jp | 5 | // 2011/11/07 kameda[at]iit.tsukuba.ac.jp | |
| 6 | // 9.3 行毎の読み込み | 6 | // 9.4 モデルの読み込み | |
| 7 | 7 | |||
| 8 | #include <stdio.h> | 8 | #include <stdio.h> | |
| 9 | #include <stdlib.h> // calloc() | |||
| 10 | ||||
| 11 | // +---------------------------------------------------- | |||
| 12 | // 1つの点のための構造体 | |||
| 13 | // +---------------------------------------------------- | |||
| 14 | struct ic2POINT { | |||
| 15 | float x; | |||
| 16 | float y; | |||
| 17 | float z; | |||
| 18 | }; | |||
| 19 | ||||
| 20 | // +---------------------------------------------------- | |||
| 21 | // 1つの色のための構造体 | |||
| 22 | // +---------------------------------------------------- | |||
| 23 | struct ic2COLOR { | |||
| 24 | float r; | |||
| 25 | float g; | |||
| 26 | float b; | |||
| 27 | }; | |||
| 28 | ||||
| 29 | // +---------------------------------------------------- | |||
| 30 | // 1つの三角形パッチのための構造体 | |||
| 31 | // 次の三角形パッチへのポインタを持つ。 | |||
| 32 | // v(st) × v(su) [外積]がこの面の法線ベクトルを成す(右ネジ式) | |||
| 33 | // +---------------------------------------------------- | |||
| 34 | struct ic2PATCH { | |||
| 35 | struct ic2POINT s; // 頂点s | |||
| 36 | struct ic2POINT t; // 頂点t | |||
| 37 | struct ic2POINT u; // 頂点u | |||
| 38 | struct ic2COLOR c; // 色の強度 (通常は0.0 - 1.0) | |||
| 39 | struct ic2PATCH *next; // 次の三角形パッチへのポインタ | |||
| 40 | }; | |||
| 41 | ||||
| 42 | // +++-------------------------------------------------- | |||
| 43 | // 新しい三角形パッチ構造体(ic2PATCH)のメモリ確保と初期化 | |||
| 44 | // +++-------------------------------------------------- | |||
| 45 | static struct ic2PATCH *ic2_NewPATCH (void) { | |||
| 46 | struct ic2PATCH *newpatch = NULL; | |||
| 47 | ||||
| 48 | newpatch = (struct ic2PATCH *)calloc(1, sizeof(struct ic2PATCH)); | |||
| 49 | return (newpatch); | |||
| 50 | } | |||
| 51 | ||||
| 52 | // +++-------------------------------------------------- | |||
| 53 | // 三角形パッチ構造体(ic2PATCH)1つ分の読み込み | |||
| 54 | // +++-------------------------------------------------- | |||
| 55 | static int ic2_InsertPATCH (struct ic2PATCH **firstpatchptr, char *onelinedata) { | |||
| 56 | // (1) 文字列へのポインタは存在するか | |||
| 57 | // (2) メモリ確保/下請け | |||
| 58 | // (3) 値の読み込み | |||
| 59 | // (4) ic2PATCHリスト構造への組み込み | |||
| 60 | struct ic2PATCH *newpatch = NULL; // 三角形パッチ構造体ヘのポインタ | |||
| 61 | int number_of_element = 0; // 読み込めた項目数 | |||
| 62 | ||||
| 63 | // (1) 文字列へのポインタは存在するか | |||
| 64 | if (onelinedata == NULL) return 1; | |||
| 65 | ||||
| 66 | // (2) メモリ確保/下請け | |||
| 67 | if ((newpatch = ic2_NewPATCH()) == NULL) { | |||
| 68 | printf("ic2_InsertPATCH: Memory allocation failed.\n"); | |||
| 69 | return 2; | |||
| 70 | } | |||
| 71 | ||||
| 72 | // (3) 値の読み込み | |||
| 73 | number_of_element = | |||
| 74 | sscanf(onelinedata, "%f %f %f %f %f %f %f %f %f %f %f %f", | |||
| 75 | &newpatch->s.x, &newpatch->s.y, &newpatch->s.z, | |||
| 76 | &newpatch->t.x, &newpatch->t.y, &newpatch->t.z, | |||
| 77 | &newpatch->u.x, &newpatch->u.y, &newpatch->u.z, | |||
| 78 | &newpatch->c.r, &newpatch->c.g, &newpatch->c.b); | |||
| 79 | if (number_of_element != 12) { | |||
| 80 | printf("ic2_InsertPATCH: format error (%d elements found)\n", number_of_element); | |||
| 81 | printf("ic2_InsertPATCH: \"%s\"\n", onelinedata); | |||
| 82 | free(newpatch); | |||
| 83 | return 3; | |||
| 84 | } | |||
| 85 | ||||
| 86 | // (4) ic2PATCHリスト構造への組み込み | |||
| 87 | // *newpatch を 三角形パッチ集合の先頭に挿入 | |||
| 88 | newpatch->next = *firstpatchptr; | |||
| 89 | *firstpatchptr = newpatch; | |||
| 90 | return 0; | |||
| 91 | } | |||
| 9 | 92 | |||
| 10 | // +---------------------------------------------------- | 93 | // +---------------------------------------------------- | |
| 11 | // モデルのファイルからの読込 | 94 | // モデルのファイルからの読込 | |
| 12 | // +---------------------------------------------------- | 95 | // +---------------------------------------------------- | |
| 13 | int ic2_ReadModel(char *filename) { | 96 | // 返値:負 ... エラー | |
| 97 | // 返値:0ないし正値 ... 読み込みに成功したパッチ数 | |||
| 98 | int ic2_ReadModel(char *filename, struct ic2PATCH **firstpatchptr) { | |||
| 14 | FILE *filetoopen = NULL; // A pointer to FILE structure | 99 | FILE *filetoopen = NULL; // A pointer to FILE structure | |
| 15 | char oneline[256]; // 1行分のバッファ,固定長にしておくとsizeof()が利用可能 | 100 | char oneline[256]; // 1行分のバッファ,固定長にしておくとsizeof()が利用可能 | |
| 16 | char firstword[256]; // コメント行かどうかの判定用 | 101 | char firstword[256]; // コメント行かどうかの判定用 | |
| 17 | int linenumber = 0; // ファイル中の行番号 | 102 | int linenumber = 0; // ファイル中の行番号 | |
| 18 | int patchnumber = 0; // パッチ数 | 103 | int patchnumber = 0; // パッチ数 | |
| 19 | 104 | |||
| 20 | // We need at least one option to indicate a file to open | 105 | // We need at least one option to indicate a file to open | |
| 21 | if (filename == NULL) { | 106 | if (filename == NULL) { | |
| 22 | printf("Error: You need to specify a one file to open.\n"); | 107 | printf("Error: You need to specify a one file to open.\n"); | |
| 23 | return -1; | 108 | return -1; | |
| 24 | } | 109 | } | |
| 25 | 110 | |||
| 26 | // Try to open it | 111 | // Try to open it | |
| 27 | filetoopen = fopen(filename, "r"); | 112 | filetoopen = fopen(filename, "r"); | |
| 28 | if (filetoopen == NULL) { | 113 | if (filetoopen == NULL) { | |
| 29 | printf("Error: Failed to open/read \"%s\".\n", filename); | 114 | printf("Error: Failed to open/read \"%s\".\n", filename); | |
| 30 | return -2; | 115 | return -2; | |
| 31 | } | 116 | } | |
| 32 | printf("Reading model from \"%s\"\n", filename); | 117 | printf("Reading model from \"%s\"\n", filename); | |
| 33 | 118 | |||
| 34 | // 1行ずつ読込 | 119 | // 1行ずつ読込 | |
| 35 | while (fgets(oneline, sizeof(oneline), filetoopen) != NULL) { | 120 | while (fgets(oneline, sizeof(oneline), filetoopen) != NULL) { | |
| 36 | linenumber++; | 121 | linenumber++; | |
| 37 | 122 | |||
| 38 | // もし行内に1文字もなければ(1単語もなければ)次行へ | 123 | // もし行内に1文字もなければ(1単語もなければ)次行へ | |
| 39 | if (sscanf(oneline, "%256s", firstword) < 1) | 124 | if (sscanf(oneline, "%256s", firstword) < 1) | |
| 40 | continue; | 125 | continue; | |
| 41 | // もし先頭が#で始まっていれば次行へ | 126 | // もし先頭が#で始まっていれば次行へ | |
| 42 | if (firstword[0] == '#') | 127 | if (firstword[0] == '#') | |
| 43 | continue; | 128 | continue; | |
| 44 | // 他のエラートラップ | 129 | // 他のエラートラップ | |
| 45 | if (0) { | 130 | if (0) { | |
| 46 | printf("Skip(line=%d): %s\n", linenumber, oneline); | 131 | printf("Skip(line=%d): %s\n", linenumber, oneline); | |
| 47 | continue; | 132 | continue; | |
| 48 | } | 133 | } | |
| 49 | 134 | |||
| 50 | printf("Valid: %d: \"%s\"\n", linenumber, oneline); | 135 | if (ic2_InsertPATCH(firstpatchptr, oneline)) { | |
| 51 | patchnumber++; | 136 | printf("Model reading is interrupted.\n"); | |
| 137 | break; | |||
| 138 | } | |||
| 139 | patchnumber++; | |||
| 52 | } | 140 | } | |
| 53 | 141 | |||
| 54 | // And close it | 142 | // And close it | |
| 55 | if (fclose(filetoopen) != 0) { | 143 | if (fclose(filetoopen) != 0) { | |
| 56 | printf("Error: Failed to close \"%s\".\n", filename); | 144 | printf("Error: Failed to close \"%s\".\n", filename); | |
| 57 | // error, but we get data anyway... | 145 | // error, but we get data anyway... | |
| 58 | } | 146 | } | |
| 59 | 147 | |||
| 60 | printf("Finish reading the model (%d patches).\n", patchnumber); | 148 | printf("Finish reading the model (%d patches).\n", patchnumber); | |
| 61 | return patchnumber; | 149 | return patchnumber; | |
| 62 | } | 150 | } | |
| 63 | 151 | |||
| 64 | int main(int argc, char *argv[]){ | 152 | // ----------------------------------------------------- | |
| 153 | // 三角形パッチ構造体(ic2PATCH)リストの表示 | |||
| 154 | // ----------------------------------------------------- | |||
| 155 | int ic2_PrintPATCHList (struct ic2PATCH *firstpatchptr) { | |||
| 156 | struct ic2PATCH *p; | |||
| 157 | int np = 0; | |||
| 158 | ||||
| 159 | for (p = firstpatchptr; p != NULL; p = p->next) { | |||
| 160 | np++; | |||
| 161 | printf("PATCH: (%g, %g, %g), (%g, %g, %g), (%g, %g, %g), rgb=[%g, %g, %g]\n", | |||
| 162 | p->s.x, p->s.y, p->s.z, | |||
| 163 | p->t.x, p->t.y, p->t.z, | |||
| 164 | p->u.x, p->u.y, p->u.z, | |||
| 165 | p->c.r, p->c.g, p->c.b); | |||
| 166 | } | |||
| 167 | ||||
| 168 | return np; | |||
| 169 | } | |||
| 65 | 170 | |||
| 171 | // -------------------------------------------------------------- | |||
| 172 | int main (int argc, char *argv[]) { | |||
| 173 | struct ic2PATCH *firstpatchptr = NULL; | |||
| 174 | int numberpatches = 0; | |||
| 175 | ||||
| 176 | // model ファイルの読み込み | |||
| 66 | if (argc <= 1) { | 177 | if (argc <= 1) { | |
| 67 | printf("Error: no model file is specified.\n"); | 178 | printf("Error: no model file is specified.\n"); | |
| 68 | return 1; | 179 | return 1; | |
| 69 | } | 180 | } | |
| 70 | 181 | numberpatches = ic2_ReadModel(argv[1], &firstpatchptr); | ||
| 71 | if (ic2_ReadModel(argv[1]) < 0) { | 182 | if (numberpatches < 0) { | |
| 72 | printf("Error: invalid model \"%s\", reading failed.\n", argv[1]); | 183 | printf("Error: invalid model \"%s\", reading failed.\n", argv[1]); | |
| 73 | return 1; | 184 | return 1; | |
| 74 | } | 185 | } | |
| 186 | printf("Number of Patches in the model = %d \n", numberpatches); | |||
| 187 | ic2_PrintPATCHList(firstpatchptr); | |||
| 75 | 188 | |||
| 76 | return 0; | 189 | return 0; | |
| 77 | } | 190 | } | |
| 78 | 191 |