goat3d
view src/chunk.h @ 55:af1310ed212b
not done yet
| author | John Tsiombikas <nuclear@member.fsf.org> |
|---|---|
| date | Sun, 19 Jan 2014 14:56:44 +0200 |
| parents | da3f335e0069 |
| children | dad392c710df |
line source
1 #ifndef CHUNK_H_
2 #define CHUNK_H_
4 #ifndef _MSC_VER
5 #include <stdint.h>
6 #else
7 typedef unsigned __int32 uint32_t;
8 #endif
10 namespace g3dimpl {
12 enum {
13 CNK_INVALID, // this shouldn't appear in files
14 CNK_SCENE, // the root chunk
16 // general purpose chunks
17 CNK_INT,
18 CNK_INT4,
19 CNK_FLOAT,
20 CNK_FLOAT3,
21 CNK_FLOAT4,
22 CNK_STRING,
24 // --- first level chunks ---
25 // children of CNK_SCENE
26 CNK_ENV, // environmental parameters
27 CNK_MTL, // material
28 CNK_MESH,
29 CNK_LIGHT,
30 CNK_CAMERA,
31 CNK_NODE,
33 // --- second level chunks ---
34 // children of CNK_ENV
35 CNK_ENV_AMBIENT, // ambient color, contains a single CNK_FLOAT3
36 CNK_ENV_FOG,
38 // --- third level chunks ---
39 // children of CNK_FOG
40 CNK_FOG_COLOR, // fog color, contains a single CNK_FLOAT3
41 CNK_FOG_EXP, // fog exponent, contains a single CNK_FLOAT
43 // children of CNK_MTL
44 CNK_MTL_NAME, // has a single CNK_STRING
45 CNK_MTL_ATTR, // material attribute, has a CNK_STRING for its name,
46 // a CNK_MTL_ATTR_VAL, and optionally a CNK_MTL_ATTR_MAP
47 // children of CNK_MTL_ATTR
48 CNK_MTL_ATTR_NAME, // has a single CNK_STRING
49 CNK_MTL_ATTR_VAL, // can have a single CNK_FLOAT, CNK_FLOAT3, or CNK_FLOAT4
50 CNK_MTL_ATTR_MAP, // has a single CNK_STRING
52 // children of CNK_MESH
53 CNK_MESH_NAME, // has a single CNK_STRING
54 CNK_MESH_MATERIAL, // has one of CNK_STRING or CNK_INT to identify the material
55 CNK_MESH_VERTEX_LIST, // has a series of CNK_FLOAT3 chunks
56 CNK_MESH_NORMAL_LIST, // has a series of CNK_FLOAT3 chunks
57 CNK_MESH_TANGENT_LIST, // has a series of CNK_FLOAT3 chunks
58 CNK_MESH_TEXCOORD_LIST, // has a series of CNK_FLOAT3 chunks
59 CNK_MESH_SKINWEIGHT_LIST, // has a series of CNK_FLOAT4 chunks (4 skin weights)
60 CNK_MESH_SKINMATRIX_LIST, // has a series of CNK_INT4 chunks (4 matrix indices)
61 CNK_MESH_COLOR_LIST, // has a series of CNK_FLOAT4 chunks
62 CNK_MESH_BONES_LIST, // has a series of CNK_INT or CNK_STRING chunks identifying the bone nodes
63 CNK_MESH_FACE_LIST, // has a series of CNK_FACE chunks
64 CNK_MESH_FILE, // optionally mesh data may be in another file, has a CNK_STRING filename
66 // child of CNK_MESH_FACE_LIST
67 CNK_MESH_FACE, // has three CNK_INT chunks
69 // children of CNK_LIGHT
70 CNK_LIGHT_NAME, // has a single CNK_STRING
71 CNK_LIGHT_POS, // has a single CNK_FLOAT3
72 CNK_LIGHT_COLOR, // has a single CNK_FLOAT3
73 CNK_LIGHT_ATTEN, // has a single CNK_FLOAT3 (constant, linear, squared attenuation)
74 CNK_LIGHT_DISTANCE, // has a single CNK_FLOAT
75 CNK_LIGHT_DIR, // a single CNK_FLOAT3 (for spotlights and dir-lights)
76 CNK_LIGHT_CONE_INNER, // single CNK_FLOAT, inner cone angle (for spotlights)
77 CNK_LIGHT_CONE_OUTER, // single CNK_FLOAT, outer cone angle (for spotlights)
79 // children of CNK_CAMERA
80 CNK_CAMERA_NAME, // has a single CNK_STRING
81 CNK_CAMERA_POS, // single CNK_FLOAT3
82 CNK_CAMERA_TARGET, // single CNK_FLOAT3
83 CNK_CAMERA_FOV, // single CNK_FLOAT (field of view in radians)
84 CNK_CAMERA_NEARCLIP, // single CNK_FLOAT (near clipping plane distance)
85 CNK_CAMERA_FARCLIP, // signle CNK_FLOAT (far clipping plane distance)
87 // children of CNK_NODE
88 CNK_NODE_NAME, // node name, a single CNK_STRING
89 CNK_NODE_PARENT, // it can have a CNK_INT or a CNK_STRING to identify the parent node
91 CNK_NODE_MESH, // it can have a CNK_INT or a CNK_STRING to identify this node's mesh
92 CNK_NODE_LIGHT, // same as CNK_NODE_MESH
93 CNK_NODE_CAMERA, // same as CNK_NODE_MESH
95 CNK_NODE_POS, // has a CNK_FLOAT3, position vector
96 CNK_NODE_ROT, // has a CNK_FLOAT4, rotation quaternion (x, y, z imaginary, w real)
97 CNK_NODE_SCALE, // has a CNK_FLOAT3, scaling
98 CNK_NODE_PIVOT, // has a CNK_FLOAT3, pivot point
100 CNK_NODE_MATRIX0, // has a CNK_FLOAT4, first matrix row (4x3)
101 CNK_NODE_MATRXI1, // has a CNK_FLOAT4, second matrix row (4x3)
102 CNK_NODE_MATRIX2, // has a CNK_FLOAT4, third matrix row (4x3)
104 MAX_NUM_CHUNKS
105 };
107 #define UNKNOWN_SIZE ((uint32_t)0xbaadf00d)
109 struct ChunkHeader {
110 uint32_t id;
111 uint32_t size;
112 };
114 struct Chunk {
115 ChunkHeader hdr;
116 char data[1];
117 };
120 ChunkHeader chunk_header(int id);
121 bool write_chunk_header(const ChunkHeader *hdr, goat3d_io *io);
122 bool read_chunk_header(ChunkHeader *hdr, goat3d_io *io);
123 void skip_chunk(const ChunkHeader *hdr, goat3d_io *io);
125 } // namespace g3dimpl
127 #endif // CHUNK_H_