#### NIFF 1.0 Specification

## 3. Binary Format

### 3.11 TriList

#### 7) Reference VtxNvData Area

When TRI_ANIM_VTX_NV_FULL is specified

u32 | vtx_nv_group_index(0)
...
u32 | vtx_nv_group_index(tri_anim_frame_num)

Reference VtxNvData Area Memory Map

u32 vtx_nv_group_index | Index number of VtxNvGroup to be referred

When TRI_ANIM_VTX_NV_KEY is specified

u32 | vtx_nv_anim_key_num
u32 | vtx_nv_anim_key(0)
...
u32 | vtx_nv_anim_key(vtx_nv_anim_key_num - 1)
u32 | vtx_nv_group_index(0)
...
u32 | vtx_nv_group_index(vtx_nv_anim_key_num - 1)

Reference VtxNvData Area Memory Map

u32 vtx_nv_anim_key_num | Number of key frame animation keys
u32 vtx_nv_anim_key | Total number of keys
u32 vtx_nv_group_index | Index number of VtxNvGroup corresponding to key

When vertex normal animation is not performed

u32 | vtx_nv_group_index

Reference VtxNvData Area Memory Map

u32 vtx_nv_group_index | Index number of VtxNvGroup to be referred

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