VOXELFORMAT: KV6: kfa animation support is not implemented

[mgerhardy]

Ken Silverman released kwalk with the voxlap library at http://advsys.net/ken/voxlap/voxlap05.htm

The included voxdata.zip contains a file called anasplit.kfa (the only file I could find for kwalk). This is for animating the anasplit.kv6 file.

The magic is Kwlk.

This is the imhex pattern:

struct point3d {
    float x;
    float y;
    float z;
};

struct hingetype {
    s32 parenthinge;
    point3d childPoint;
    point3d parentPoint;
    point3d childAxisRotationVector;
    point3d parentAxisRotationVector;
    s16 vmin;
    s16 vmax;
    s8 htype;
    s8 filler[7];
};

struct seqtyp {
    s32 timeMillis;
    s32 frm;
};

struct Header {
    u32 magic;
    u32 stringlen;
    u8 filename[stringlen];
    u32 numhinge;
    hingetype hinge[numhinge];
    u32 numfrm;
    // These are the hinge angles. 0 is 0 degrees, 16384 is 90 degrees, -16384 is -90 degrees
    s16 frmval[numfrm * numhinge]; //[numfrm][numhinge
    u32 seqnum;
    seqtyp seq[seqnum];
};

Header hdr @0x00;

The loading code is partially written in https://github.com/mgerhardy/vengi/blob/f3d04f3d7933e654388a4981eaed6fd914d72d51/src/modules/voxelformat/private/slab6/KV6Format.cpp#L177

[mgerhardy]

https://github.com/mgerhardy/vengi/commit/d5d082ac02524b18f2cf61f0ce1723be27ef3311 Includes the basic kfa loading