goat3d

annotate src/chunk.h @ 55:af1310ed212b

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author John Tsiombikas <nuclear@member.fsf.org>
date Sun, 19 Jan 2014 14:56:44 +0200
parents da3f335e0069
children dad392c710df
rev   line source
nuclear@1 1 #ifndef CHUNK_H_
nuclear@1 2 #define CHUNK_H_
nuclear@1 3
nuclear@41 4 #ifndef _MSC_VER
nuclear@9 5 #include <stdint.h>
nuclear@41 6 #else
nuclear@41 7 typedef unsigned __int32 uint32_t;
nuclear@41 8 #endif
nuclear@9 9
nuclear@47 10 namespace g3dimpl {
nuclear@47 11
nuclear@1 12 enum {
nuclear@1 13 CNK_INVALID, // this shouldn't appear in files
nuclear@1 14 CNK_SCENE, // the root chunk
nuclear@1 15
nuclear@1 16 // general purpose chunks
nuclear@1 17 CNK_INT,
nuclear@2 18 CNK_INT4,
nuclear@1 19 CNK_FLOAT,
nuclear@2 20 CNK_FLOAT3,
nuclear@2 21 CNK_FLOAT4,
nuclear@1 22 CNK_STRING,
nuclear@1 23
nuclear@1 24 // --- first level chunks ---
nuclear@1 25 // children of CNK_SCENE
nuclear@1 26 CNK_ENV, // environmental parameters
nuclear@14 27 CNK_MTL, // material
nuclear@14 28 CNK_MESH,
nuclear@14 29 CNK_LIGHT,
nuclear@14 30 CNK_CAMERA,
nuclear@14 31 CNK_NODE,
nuclear@1 32
nuclear@1 33 // --- second level chunks ---
nuclear@1 34 // children of CNK_ENV
nuclear@2 35 CNK_ENV_AMBIENT, // ambient color, contains a single CNK_FLOAT3
nuclear@1 36 CNK_ENV_FOG,
nuclear@1 37
nuclear@1 38 // --- third level chunks ---
nuclear@1 39 // children of CNK_FOG
nuclear@2 40 CNK_FOG_COLOR, // fog color, contains a single CNK_FLOAT3
nuclear@14 41 CNK_FOG_EXP, // fog exponent, contains a single CNK_FLOAT
nuclear@1 42
nuclear@1 43 // children of CNK_MTL
nuclear@14 44 CNK_MTL_NAME, // has a single CNK_STRING
nuclear@1 45 CNK_MTL_ATTR, // material attribute, has a CNK_STRING for its name,
nuclear@1 46 // a CNK_MTL_ATTR_VAL, and optionally a CNK_MTL_ATTR_MAP
nuclear@1 47 // children of CNK_MTL_ATTR
nuclear@14 48 CNK_MTL_ATTR_NAME, // has a single CNK_STRING
nuclear@2 49 CNK_MTL_ATTR_VAL, // can have a single CNK_FLOAT, CNK_FLOAT3, or CNK_FLOAT4
nuclear@1 50 CNK_MTL_ATTR_MAP, // has a single CNK_STRING
nuclear@1 51
nuclear@1 52 // children of CNK_MESH
nuclear@2 53 CNK_MESH_NAME, // has a single CNK_STRING
nuclear@2 54 CNK_MESH_MATERIAL, // has one of CNK_STRING or CNK_INT to identify the material
nuclear@2 55 CNK_MESH_VERTEX_LIST, // has a series of CNK_FLOAT3 chunks
nuclear@2 56 CNK_MESH_NORMAL_LIST, // has a series of CNK_FLOAT3 chunks
nuclear@2 57 CNK_MESH_TANGENT_LIST, // has a series of CNK_FLOAT3 chunks
nuclear@2 58 CNK_MESH_TEXCOORD_LIST, // has a series of CNK_FLOAT3 chunks
nuclear@2 59 CNK_MESH_SKINWEIGHT_LIST, // has a series of CNK_FLOAT4 chunks (4 skin weights)
nuclear@2 60 CNK_MESH_SKINMATRIX_LIST, // has a series of CNK_INT4 chunks (4 matrix indices)
nuclear@2 61 CNK_MESH_COLOR_LIST, // has a series of CNK_FLOAT4 chunks
nuclear@2 62 CNK_MESH_BONES_LIST, // has a series of CNK_INT or CNK_STRING chunks identifying the bone nodes
nuclear@8 63 CNK_MESH_FACE_LIST, // has a series of CNK_FACE chunks
nuclear@14 64 CNK_MESH_FILE, // optionally mesh data may be in another file, has a CNK_STRING filename
nuclear@8 65
nuclear@8 66 // child of CNK_MESH_FACE_LIST
nuclear@8 67 CNK_MESH_FACE, // has three CNK_INT chunks
nuclear@2 68
nuclear@2 69 // children of CNK_LIGHT
nuclear@2 70 CNK_LIGHT_NAME, // has a single CNK_STRING
nuclear@2 71 CNK_LIGHT_POS, // has a single CNK_FLOAT3
nuclear@2 72 CNK_LIGHT_COLOR, // has a single CNK_FLOAT3
nuclear@2 73 CNK_LIGHT_ATTEN, // has a single CNK_FLOAT3 (constant, linear, squared attenuation)
nuclear@2 74 CNK_LIGHT_DISTANCE, // has a single CNK_FLOAT
nuclear@2 75 CNK_LIGHT_DIR, // a single CNK_FLOAT3 (for spotlights and dir-lights)
nuclear@2 76 CNK_LIGHT_CONE_INNER, // single CNK_FLOAT, inner cone angle (for spotlights)
nuclear@2 77 CNK_LIGHT_CONE_OUTER, // single CNK_FLOAT, outer cone angle (for spotlights)
nuclear@2 78
nuclear@2 79 // children of CNK_CAMERA
nuclear@2 80 CNK_CAMERA_NAME, // has a single CNK_STRING
nuclear@2 81 CNK_CAMERA_POS, // single CNK_FLOAT3
nuclear@2 82 CNK_CAMERA_TARGET, // single CNK_FLOAT3
nuclear@2 83 CNK_CAMERA_FOV, // single CNK_FLOAT (field of view in radians)
nuclear@2 84 CNK_CAMERA_NEARCLIP, // single CNK_FLOAT (near clipping plane distance)
nuclear@2 85 CNK_CAMERA_FARCLIP, // signle CNK_FLOAT (far clipping plane distance)
nuclear@2 86
nuclear@2 87 // children of CNK_NODE
nuclear@2 88 CNK_NODE_NAME, // node name, a single CNK_STRING
nuclear@2 89 CNK_NODE_PARENT, // it can have a CNK_INT or a CNK_STRING to identify the parent node
nuclear@2 90
nuclear@2 91 CNK_NODE_MESH, // it can have a CNK_INT or a CNK_STRING to identify this node's mesh
nuclear@2 92 CNK_NODE_LIGHT, // same as CNK_NODE_MESH
nuclear@2 93 CNK_NODE_CAMERA, // same as CNK_NODE_MESH
nuclear@2 94
nuclear@14 95 CNK_NODE_POS, // has a CNK_FLOAT3, position vector
nuclear@14 96 CNK_NODE_ROT, // has a CNK_FLOAT4, rotation quaternion (x, y, z imaginary, w real)
nuclear@14 97 CNK_NODE_SCALE, // has a CNK_FLOAT3, scaling
nuclear@14 98 CNK_NODE_PIVOT, // has a CNK_FLOAT3, pivot point
nuclear@2 99
nuclear@14 100 CNK_NODE_MATRIX0, // has a CNK_FLOAT4, first matrix row (4x3)
nuclear@14 101 CNK_NODE_MATRXI1, // has a CNK_FLOAT4, second matrix row (4x3)
nuclear@14 102 CNK_NODE_MATRIX2, // has a CNK_FLOAT4, third matrix row (4x3)
nuclear@2 103
nuclear@2 104 MAX_NUM_CHUNKS
nuclear@1 105 };
nuclear@1 106
nuclear@9 107 #define UNKNOWN_SIZE ((uint32_t)0xbaadf00d)
nuclear@9 108
nuclear@1 109 struct ChunkHeader {
nuclear@1 110 uint32_t id;
nuclear@1 111 uint32_t size;
nuclear@1 112 };
nuclear@1 113
nuclear@1 114 struct Chunk {
nuclear@1 115 ChunkHeader hdr;
nuclear@1 116 char data[1];
nuclear@1 117 };
nuclear@1 118
nuclear@9 119
nuclear@13 120 ChunkHeader chunk_header(int id);
nuclear@13 121 bool write_chunk_header(const ChunkHeader *hdr, goat3d_io *io);
nuclear@13 122 bool read_chunk_header(ChunkHeader *hdr, goat3d_io *io);
nuclear@13 123 void skip_chunk(const ChunkHeader *hdr, goat3d_io *io);
nuclear@13 124
nuclear@47 125 } // namespace g3dimpl
nuclear@9 126
nuclear@1 127 #endif // CHUNK_H_