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GF update
};
Example: 09 00 9f 01 means there's 9f 01 (415) polygons of type 0x9. Therefore: 28*415=11620 bytes to next polygon type or vertices if FF FF FF FF.
==Magic.fs MAG environment GF objects==
GF Environment (stages like Cerberus gate; Alexander backdrop and etc.) geometry contains many polygon types (sic!). Every single polygon type is different than other.
private int[] _knownPolygons = new int[]
{
0x2,
0x6,
0x7,
0x8,
0x9,
0xC,
0x10,
0x12,
0x11,
0x13,
};
0xC points to geometry section. If *0xC (pointers to geometries) is == 0, then file has no geometry (it is possible. Some files are only texture, some only geometry, some are only animation and some are everything). There should be no single case where the number of models in file exceed 12.
0xC:
PointersToModel:
Example object (let's call it modOffset)
uint _objCount = *modOffset;
ushort _vertexCount = *(modOffset + 24);
ushort _verticesOffset = *(modOffset + 20);
Polygon parsing based on types (C#):
int relativeJump = *(modOffset + 8);
int *localoffset = modOffset + _relativeJump + 4;
if (polygonType == 0x02)
{
for (int i = 0; i < polygons * 20; i += 20)
{
f += $"f {GetPolygon(localoffset + i + 0xC)} {GetPolygon(localoffset + i + 0xE)} {GetPolygon(localoffset + i + 0x10)}\n";
}
safeHandle = polygons * 20;
}
if (polygonType == 0x06)
{
for (int i = 0; i < polygons * 12; i += 12)
{
f += $"f {GetPolygon(localoffset + i + 0x4)} {GetPolygon(localoffset + i + 0x6)} {GetPolygon(localoffset + i + 0x08)}\n";
}
safeHandle = polygons * 12;
}
if (polygonType == 0x07)
{
for (int i = 0; i < polygons * 20; i += 20)
{
f += $"f {GetPolygon(localoffset + i + 0xC)} {GetPolygon(localoffset + i + 0xE)} {GetPolygon(localoffset + i + 0x10)}\n";
}
safeHandle = polygons * 20;
}
if (polygonType == 0x09)
{
for (int i = 0; i < polygons * 28; i += 28)
{
f += $"f {GetPolygon(localoffset + i + 18)} {GetPolygon(localoffset + i + 20)} {GetPolygon(localoffset + i + 22)}\n";
}
safeHandle = polygons * 28;
}
if (polygonType == 0x08)
{
for (int i = 0; i < polygons * 20; i += 20)
{
f += $"f {GetPolygon(localoffset + i + 0xA)} {GetPolygon(localoffset + i + 0xC)} {GetPolygon(localoffset + i + 0xE)}\n";
}
safeHandle = polygons * 20;
}
if (polygonType == 12)
{
for (int i = 0; i < polygons * 28; i += 28)
{
f += $"f {GetPolygon(localoffset + i + 20)} {GetPolygon(localoffset + i + 22)} {GetPolygon(localoffset + i + 26)} {GetPolygon(localoffset + i + 24)}\n";
}
safeHandle = polygons * 28;
}
if (polygonType == 0x12)
{
for (int i = 0; i < polygons * 24; i += 24)
{
f += $"f {GetPolygon(localoffset + i + 12)} {GetPolygon(localoffset + i + 14)} {GetPolygon(localoffset + i + 18)} {GetPolygon(localoffset + i + 16)}\n";
}
safeHandle = polygons * 24;
}
if (polygonType == 0x13)
{
for (int i = 0; i < polygons * 36; i += 36)
{
f += $"f {GetPolygon(localoffset + i + 24)} {GetPolygon(localoffset + i + 26)} {GetPolygon(localoffset + i + 30)} {GetPolygon(localoffset + i + 28)}\n";
}
safeHandle = polygons * 36;
}
if (polygonType == 0x11)
{
for (int i = 0; i < polygons * 24; i += 24)
{
f += $"f {GetPolygon(localoffset + i + 16)} {GetPolygon(localoffset + i + 18)} {GetPolygon(localoffset + i + 22)} {GetPolygon(localoffset + i + 20)}\n";
}
safeHandle = polygons * 24;
}
if (polygonType == 0x10)
{
for (int i = 0; i < polygons * 12; i += 12)
{
f += $"f {GetPolygon(localoffset + i + 4)} {GetPolygon(localoffset + i + 6)} {GetPolygon(localoffset + i + 10)} {GetPolygon(localoffset + i + 8)}\n";
}
safeHandle = polygons * 12;
}
uint isNext = *(localoffset + safeHandle);
if (isNext == 0xFFFFFFFF) //FFFFFFFF breaks the polygons reading
break;
Vertex:
short x
short z
short y
short w //rarely used, for skeleton weighting
