mirror of
https://github.com/OpenMW/openmw.git
synced 2025-11-04 04:26:42 +00:00
500 lines
11 KiB
C++
500 lines
11 KiB
C++
/*
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OpenMW - The completely unofficial reimplementation of Morrowind
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Copyright (C) 2008-2010 Nicolay Korslund
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Email: < korslund@gmail.com >
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WWW: http://openmw.sourceforge.net/
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This file (data.h) is part of the OpenMW package.
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OpenMW is distributed as free software: you can redistribute it
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and/or modify it under the terms of the GNU General Public License
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version 3, as published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful, but
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WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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General Public License for more details.
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You should have received a copy of the GNU General Public License
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version 3 along with this program. If not, see
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http://www.gnu.org/licenses/ .
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*/
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#ifndef _NIF_DATA_H_
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#define _NIF_DATA_H_
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#include "controlled.hpp"
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namespace Nif
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{
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class NiSourceTexture : public Named
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{
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public:
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// Is this an external (references a separate texture file) or
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// internal (data is inside the nif itself) texture?
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bool external;
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SString filename; // In case of external textures
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NiPixelDataPtr data; // In case of internal textures
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/* Pixel layout
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0 - Palettised
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1 - High color 16
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2 - True color 32
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3 - Compressed
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4 - Bumpmap
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5 - Default */
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int pixel;
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/* Mipmap format
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0 - no
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1 - yes
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2 - default */
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int mipmap;
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/* Alpha
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0 - none
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1 - binary
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2 - smooth
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3 - default (use material alpha, or multiply material with texture if present)
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*/
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int alpha;
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void read(NIFFile *nif)
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{
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Named::read(nif);
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external = !!nif->getByte();
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if(external) filename = nif->getString();
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else
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{
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nif->getByte(); // always 1
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data.read(nif);
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}
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pixel = nif->getInt();
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mipmap = nif->getInt();
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alpha = nif->getInt();
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nif->getByte(); // always 1
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}
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};
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// Common ancestor for several data classes
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class ShapeData : public Record
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{
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public:
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FloatArray vertices, normals, colors, uvlist;
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const Vector *center;
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float radius;
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void read(NIFFile *nif)
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{
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int verts = nif->getShort();
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if(nif->getInt())
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vertices = nif->getFloatLen(verts*3);
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if(nif->getInt())
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normals = nif->getFloatLen(verts*3);
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center = nif->getVector();
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radius = nif->getFloat();
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if(nif->getInt())
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colors = nif->getFloatLen(verts*4);
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int uvs = nif->getShort();
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// Only the first 6 bits are used as a count. I think the rest are
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// flags of some sort.
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uvs &= 0x3f;
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if(nif->getInt())
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uvlist = nif->getFloatLen(uvs*verts*2);
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}
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};
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class NiTriShapeData : public ShapeData
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{
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public:
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// Triangles, three vertex indices per triangle
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SliceArray<short> triangles;
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void read(NIFFile *nif)
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{
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ShapeData::read(nif);
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int tris = nif->getShort();
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if(tris)
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{
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// We have three times as many vertices as triangles, so this
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// is always equal to tris*3.
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int cnt = nif->getInt();
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triangles = nif->getArrayLen<short>(cnt);
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}
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// Read the match list, which lists the vertices that are equal to
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// vertices. We don't actually need need this for anything, so
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// just skip it.
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int verts = nif->getShort();
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if(verts)
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{
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for(int i=0;i<verts;i++)
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{
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// Number of vertices matching vertex 'i'
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short num = nif->getShort();
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nif->skip(num*sizeof(short));
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}
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}
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}
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};
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class NiAutoNormalParticlesData : public ShapeData
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{
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public:
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int activeCount;
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void read(NIFFile *nif)
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{
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ShapeData::read(nif);
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// Should always match the number of vertices
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activeCount = nif->getShort();
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// Skip all the info, we don't support particles yet
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nif->getFloat(); // Active radius ?
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nif->getShort(); // Number of valid entries in the following arrays ?
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if(nif->getInt())
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// Particle sizes
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nif->getFloatLen(activeCount);
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}
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};
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class NiRotatingParticlesData : public NiAutoNormalParticlesData
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{
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public:
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void read(NIFFile *nif)
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{
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NiAutoNormalParticlesData::read(nif);
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if(nif->getInt())
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// Rotation quaternions. I THINK activeCount is correct here,
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// but verts (vertex number) might also be correct, if there is
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// any case where the two don't match.
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nif->getArrayLen<Vector4>(activeCount);
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}
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};
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class NiPosData : public Record
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{
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public:
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void read(NIFFile *nif)
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{
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int count = nif->getInt();
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int type = nif->getInt();
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if(type != 1 && type != 2)
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nif->fail("Cannot handle NiPosData type");
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// TODO: Could make structs of these. Seems to be identical to
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// translation in NiKeyframeData.
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for(int i=0; i<count; i++)
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{
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/*float time =*/ nif->getFloat();
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nif->getVector(); // This isn't really shared between type 1
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// and type 2, most likely
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if(type == 2)
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{
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nif->getVector();
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nif->getVector();
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}
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}
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}
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};
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class NiUVData : public Record
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{
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public:
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void read(NIFFile *nif)
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{
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// TODO: This is claimed to be a "float animation key", which is
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// also used in FloatData and KeyframeData. We could probably
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// reuse and refactor a lot of this if we actually use it at some
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// point.
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for(int i=0; i<2; i++)
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{
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int count = nif->getInt();
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if(count)
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{
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nif->getInt(); // always 2
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nif->getArrayLen<Vector4>(count); // Really one time float + one vector
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}
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}
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// Always 0
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nif->getInt();
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nif->getInt();
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}
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};
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class NiFloatData : public Record
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{
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public:
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void read(NIFFile *nif)
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{
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int count = nif->getInt();
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nif->getInt(); // always 2
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nif->getArrayLen<Vector4>(count); // Really one time float + one vector
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}
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};
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class NiPixelData : public Record
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{
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public:
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unsigned int rmask, gmask, bmask, amask;
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int bpp, mips;
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void read(NIFFile *nif)
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{
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nif->getInt(); // always 0 or 1
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rmask = nif->getInt(); // usually 0xff
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gmask = nif->getInt(); // usually 0xff00
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bmask = nif->getInt(); // usually 0xff0000
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amask = nif->getInt(); // usually 0xff000000 or zero
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bpp = nif->getInt();
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// Unknown
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nif->skip(12);
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mips = nif->getInt();
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// Bytes per pixel, should be bpp * 8
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/*int bytes =*/ nif->getInt();
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for(int i=0; i<mips; i++)
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{
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// Image size and offset in the following data field
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/*int x =*/ nif->getInt();
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/*int y =*/ nif->getInt();
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/*int offset =*/ nif->getInt();
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}
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// Skip the data
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unsigned int dataSize = nif->getInt();
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nif->skip(dataSize);
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}
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};
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class NiColorData : public Record
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{
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public:
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struct ColorData
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{
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float time;
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Vector4 rgba;
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};
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void read(NIFFile *nif)
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{
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int count = nif->getInt();
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nif->getInt(); // always 1
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// Skip the data
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assert(sizeof(ColorData) == 4*5);
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nif->skip(sizeof(ColorData) * count);
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}
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};
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class NiVisData : public Record
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{
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public:
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void read(NIFFile *nif)
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{
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int count = nif->getInt();
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/*
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Each VisData consists of:
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float time;
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byte isSet;
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If you implement this, make sure you use a packed struct
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(sizeof==5), or read each element individually.
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*/
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nif->skip(count*5);
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}
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};
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class NiSkinInstance : public Record
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{
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public:
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NiSkinDataPtr data;
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NodePtr root;
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NodeList bones;
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void read(NIFFile *nif)
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{
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data.read(nif);
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root.read(nif);
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bones.read(nif);
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if(data.empty() || root.empty())
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nif->fail("NiSkinInstance missing root or data");
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}
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void post(NIFFile *nif);
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};
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class NiSkinData : public Record
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{
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public:
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// This is to make sure the structs are packed, ie. that the
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// compiler doesn't mess them up with extra alignment bytes.
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#pragma pack(push)
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#pragma pack(1)
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struct BoneTrafo
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{
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Matrix rotation; // Rotation offset from bone?
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Vector trans; // Translation
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float scale; // Probably scale (always 1)
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};
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struct VertWeight
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{
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short vertex;
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float weight;
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};
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#pragma pack(pop)
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struct BoneInfo
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{
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const BoneTrafo *trafo;
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const Vector4 *unknown;
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SliceArray<VertWeight> weights;
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};
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const BoneTrafo *trafo;
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std::vector<BoneInfo> bones;
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void read(NIFFile *nif)
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{
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assert(sizeof(BoneTrafo) == 4*(9+3+1));
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assert(sizeof(VertWeight) == 6);
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trafo = nif->getPtr<BoneTrafo>();
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int boneNum = nif->getInt();
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nif->getInt(); // -1
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bones.resize(boneNum);
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for(int i=0;i<boneNum;i++)
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{
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BoneInfo &bi = bones[i];
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bi.trafo = nif->getPtr<BoneTrafo>();
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bi.unknown = nif->getVector4();
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// Number of vertex weights
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int count = nif->getShort();
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bi.weights = nif->getArrayLen<VertWeight>(count);
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}
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}
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};
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class NiMorphData : public Record
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{
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public:
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void read(NIFFile *nif)
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{
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int morphCount = nif->getInt();
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int vertCount = nif->getInt();
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nif->getByte();
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for(int i=0; i<morphCount; i++)
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{
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int magic = nif->getInt();
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nif->getInt();
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if(magic)
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// Time, data, forward, backward tangents
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nif->getFloatLen(4*magic);
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nif->getFloatLen(vertCount*3);
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}
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}
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};
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class NiKeyframeData : public Record
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{
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public:
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void read(NIFFile *nif)
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{
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// Rotations first
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int count = nif->getInt();
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if(count)
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{
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int type = nif->getInt();
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if(type == 1)
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nif->skip(count*4*5); // time + quaternion
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else if(type == 3)
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nif->skip(count*4*8); // rot1 + tension+bias+continuity
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else if(type == 4)
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{
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for(int j=0;j<count;j++)
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{
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nif->getFloat(); // time
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for(int i=0; i<3; i++)
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{
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int cnt = nif->getInt();
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int type = nif->getInt();
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if(type == 1)
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nif->skip(cnt*4*2); // time + unknown
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else if(type == 2)
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nif->skip(cnt*4*4); // time + unknown vector
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else nif->fail("Unknown sub-rotation type");
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}
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}
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}
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else nif->fail("Unknown rotation type in NiKeyframeData");
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}
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// Then translation
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count = nif->getInt();
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if(count)
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{
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int type = nif->getInt();
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if(type == 1) nif->getFloatLen(count*4); // time + translation
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else if(type == 2)
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nif->getFloatLen(count*10); // trans1 + forward + backward
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else if(type == 3)
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nif->getFloatLen(count*7); // trans1 + tension,bias,continuity
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else nif->fail("Unknown translation type");
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}
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// Finally, scalings
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count = nif->getInt();
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if(count)
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{
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int type = nif->getInt();
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int size = 0;
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if(type == 1) size = 2; // time+scale
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else if(type == 2) size = 4; // 1 + forward + backward (floats)
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else if(type == 3) size = 5; // 1 + tbc
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else nif->fail("Unknown scaling type");
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nif->getFloatLen(count*size);
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}
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}
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};
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} // Namespace
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#endif
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