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comparison dmmodel.h @ 19:a329f0216491

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Implement PLY file format parsing and extremely simplistic scene setup file format. Not finished yet.
author Matti Hamalainen <ccr@tnsp.org>
date Thu, 07 Nov 2019 20:15:33 +0200
parents
children 1404dfcee7b8
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18:b1e75c65016d 19:a329f0216491
1 //
2 //
3 //
4 #ifndef DMMODEL_H
5 #define DMMODEL_H 1
6
7 #include "dmutil.h"
8 #include <cstdint>
9 #include <fstream>
10 #include <unordered_map>
11
12
13 #define PLY_PROP_VERTEX_INDICES "vertex_indices"
14 #define PLY_ELEM_FACE "face"
15 #define PLY_ELEM_VERTEX "vertex"
16
17
18 enum DMPLYFormat
19 {
20 PLY_FMT_UNKNOWN,
21 PLY_FMT_ASCII,
22 PLY_FMT_BIN_LE,
23 PLY_FMT_BIN_BE
24 };
25
26
27 enum DMPLYPropType
28 {
29 PLY_TYPE_NONE,
30 PLY_TYPE_LIST,
31
32 PLY_TYPE_UINT8,
33 PLY_TYPE_INT8,
34 PLY_TYPE_INT16,
35 PLY_TYPE_UINT16,
36 PLY_TYPE_INT32,
37 PLY_TYPE_UINT32,
38 PLY_TYPE_FLOAT,
39 PLY_TYPE_DOUBLE
40 };
41
42
43 /* Structures
44 */
45 union DMPLYPropValue
46 {
47 double v_double;
48 float v_float;
49 unsigned int v_uint;
50 int v_int;
51 };
52
53
54 struct DMPLYFileProperty
55 {
56 std::string name;
57 DMPLYPropType
58 type,
59 list_num_type,
60 list_values_type;
61
62 DMPLYPropValue value, list_num_value;
63 std::vector<DMPLYPropValue> list_values;
64 };
65
66
67 struct DMPLYFileElement
68 {
69 int value;
70 std::string name;
71
72 std::unordered_map<std::string, DMPLYFileProperty> prop_map;
73 std::vector<DMPLYFileProperty *> properties;
74
75 DMPLYFileProperty *checkProp(const std::string &prop)
76 {
77 if (prop_map.count(prop))
78 return &prop_map[prop];
79 else
80 return 0;
81 }
82 };
83
84
85 struct DMTextFileInfo
86 {
87 int nline, state;
88 std::string filename;
89 std::string line;
90 std::ifstream file;
91 };
92
93
94 struct DMPLYFileInfo : DMTextFileInfo
95 {
96 DMPLYFormat format;
97
98 std::unordered_map<std::string, DMPLYFileElement> elem_map;
99 std::vector<DMPLYFileElement *> elements;
100 DMPLYFileElement *element;
101
102 DMPLYFileInfo()
103 {
104 element = 0;
105 format = PLY_FMT_UNKNOWN;
106 }
107
108 DMPLYFileElement *checkElem(const std::string &elem)
109 {
110 if (elem_map.count(elem))
111 return &elem_map[elem];
112 else
113 return 0;
114 }
115 };
116
117
118 struct DMColor
119 {
120 int r, g, b, alpha;
121 };
122
123
124 struct DMVertex
125 {
126 float x, y, z;
127 };
128
129
130 struct DMModel
131 {
132 int nvertices, nfaces;
133 std::vector<DMVertex> vertices, normals;
134 std::vector<unsigned int> faces;
135
136 DMColor color;
137 DMVertex translate, scale, rotate;
138
139 unsigned int id_prog, id_fs, id_vs;
140
141 bool loadFromPLY(const std::string &filename);
142 bool loadFromPLY(const std::string &filename, DMPLYFileInfo &info);
143
144 void printInfo()
145 {
146 printf(
147 "MODEL: scale <%1.5f, %1.5f, %1.5f>\n"
148 "MODEL: translate <%1.5f, %1.5f, %1.5f>\n"
149 "MODEL: rotate <%1.5f, %1.5f, %1.5f>\n"
150 ,
151 scale.x, scale.y, scale.z,
152 translate.x, translate.y, translate.z,
153 rotate.x, rotate.y, rotate.z);
154 }
155
156 DMModel()
157 {
158 translate.x = translate.y = translate.z = 0;
159 rotate.x = rotate.y = rotate.z = 0;
160 scale.x = scale.y = scale.z = 1;
161 }
162 };
163
164
165 struct DMLight
166 {
167 DMVertex pos;
168 float ambient[4], diffuse[4], specular[4];
169 };
170
171
172 struct DMCamera
173 {
174 DMVertex pos, lookAt;
175 };
176
177
178 struct DMSimpleScene
179 {
180 DMModel model;
181 DMCamera camera;
182 std::vector<DMLight> lights;
183
184 bool loadInfo(const std::string &filename);
185 };
186
187 #endif