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git-svn-id: svn://svn.icculus.org/netradiant/trunk@1 61c419a2-8eb2-4b30-bcec-8cead039b335
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rpolzer
241
plugins/md3model/mdl.cpp
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241
plugins/md3model/mdl.cpp
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/*
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Copyright (C) 2001-2006, William Joseph.
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All Rights Reserved.
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This file is part of GtkRadiant.
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GtkRadiant is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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GtkRadiant is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU 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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along with GtkRadiant; if not, write to the Free Software
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Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
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*/
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#include "mdl.h"
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#include "ifilesystem.h"
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#include "imodel.h"
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#include "imagelib.h"
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#include "bytestreamutils.h"
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#include "model.h"
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#include "ident.h"
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#include "mdlnormals.h"
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#include "mdlformat.h"
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void istream_read_mdlHeader(PointerInputStream& inputStream, mdlHeader_t& header)
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{
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inputStream.read(header.ident, 4);
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header.version = istream_read_int32_le(inputStream);
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header.scale[0] = istream_read_float32_le(inputStream);
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header.scale[1] = istream_read_float32_le(inputStream);
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header.scale[2] = istream_read_float32_le(inputStream);
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header.scale_origin[0] = istream_read_float32_le(inputStream);
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header.scale_origin[1] = istream_read_float32_le(inputStream);
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header.scale_origin[2] = istream_read_float32_le(inputStream);
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header.boundingradius = istream_read_float32_le(inputStream);
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header.eyeposition[0] = istream_read_float32_le(inputStream);
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header.eyeposition[1] = istream_read_float32_le(inputStream);
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header.eyeposition[2] = istream_read_float32_le(inputStream);
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header.numskins = istream_read_int32_le(inputStream);
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header.skinwidth = istream_read_int32_le(inputStream);
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header.skinheight = istream_read_int32_le(inputStream);
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header.numverts = istream_read_int32_le(inputStream);
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header.numtris = istream_read_int32_le(inputStream);
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header.numframes = istream_read_int32_le(inputStream);
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header.synctype = istream_read_int32_le(inputStream);
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header.flags = istream_read_int32_le(inputStream);
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header.size = istream_read_float32_le(inputStream);
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}
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inline ArbitraryMeshVertex MDLVertex_construct(const mdlHeader_t& header, const mdlXyzNormal_t& xyz, const mdlSt_t& st, bool facesfront)
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{
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return ArbitraryMeshVertex(
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Vertex3f(
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xyz.v[0] * header.scale[0] + header.scale_origin[0],
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xyz.v[1] * header.scale[1] + header.scale_origin[1],
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xyz.v[2] * header.scale[2] + header.scale_origin[2]
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),
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Normal3f(
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g_mdl_normals[xyz.lightnormalindex][0],
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g_mdl_normals[xyz.lightnormalindex][1],
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g_mdl_normals[xyz.lightnormalindex][2]
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),
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TexCoord2f(
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((float)st.s / header.skinwidth) + ((st.onseam == MDL_ONSEAM && !facesfront) ? 0.5f : 0.0f),
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(float)st.t / header.skinheight
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)
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);
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}
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class mdlVertex_t
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{
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public:
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inline mdlVertex_t(int vertindex, int facesfront)
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: m_vertindex(vertindex), m_facesfront(facesfront)
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{}
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inline bool operator<(const mdlVertex_t& other) const
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{
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if(m_facesfront < other.m_facesfront)
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return true;
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if(other.m_facesfront < m_facesfront)
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return false;
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if(m_vertindex < other.m_vertindex)
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return true;
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if(other.m_vertindex < m_vertindex)
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return false;
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return false;
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}
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inline bool operator==(const mdlVertex_t& other) const
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{
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return m_vertindex == other.m_vertindex
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&& m_facesfront == other.m_facesfront;
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}
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int m_vertindex;
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int m_facesfront;
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};
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typedef const mdlTriangle_t* mdlTriangleIterator;
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void MDLSurface_read(Surface& surface, const byte* buffer, const char* name)
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{
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mdlHeader_t header;
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PointerInputStream inputStream(buffer);
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istream_read_mdlHeader(inputStream, header);
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for(int i = 0; i < header.numskins; ++i)
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{
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switch(istream_read_int32_le(inputStream))
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{
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case MDL_SKIN_SINGLE:
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inputStream.seek(header.skinwidth * header.skinheight);
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break;
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case MDL_SKIN_GROUP:
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int numskins = istream_read_int32_le(inputStream);
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inputStream.seek(numskins * (4 + (header.skinwidth * header.skinheight)));
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break;
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}
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}
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Array<mdlSt_t> mdlSts(header.numverts);
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for(Array<mdlSt_t>::iterator i = mdlSts.begin(); i != mdlSts.end(); ++i)
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{
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(*i).onseam = istream_read_int32_le(inputStream);
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(*i).s = istream_read_int32_le(inputStream);
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(*i).t = istream_read_int32_le(inputStream);
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}
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Array<mdlTriangle_t> mdlTriangles(header.numtris);
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for(Array<mdlTriangle_t>::iterator i = mdlTriangles.begin(); i != mdlTriangles.end(); ++i)
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{
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(*i).facesfront = istream_read_int32_le(inputStream);
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(*i).vertindex[0] = istream_read_int32_le(inputStream);
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(*i).vertindex[1] = istream_read_int32_le(inputStream);
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(*i).vertindex[2] = istream_read_int32_le(inputStream);
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}
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{
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bool found = false;
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for(int i = 0; i < header.numframes && found == false; i++)
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{
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switch(istream_read_int32_le(inputStream))
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{
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case MDL_FRAME_SINGLE:
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inputStream.seek(MDL_FRAME_SIZE);
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found = true;
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break;
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case MDL_FRAME_GROUP:
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int numframes = istream_read_int32_le(inputStream);
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inputStream.seek((MDL_XYZNORMAL_SIZE * 2) + (numframes * 4));
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found = true;
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break;
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}
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}
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}
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Array<mdlXyzNormal_t> mdlXyzNormals(header.numtris);
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for(Array<mdlXyzNormal_t>::iterator i = mdlXyzNormals.begin(); i != mdlXyzNormals.end(); ++i)
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{
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inputStream.read((*i).v, 3);
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inputStream.read(&(*i).lightnormalindex, 1);
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}
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{
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VertexBuffer<mdlVertex_t> mdl_vertices;
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{
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UniqueVertexBuffer<mdlVertex_t> inserter(mdl_vertices);
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for(Array<mdlTriangle_t>::iterator i = mdlTriangles.begin(); i != mdlTriangles.end(); ++i)
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{
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surface.indices().insert(inserter.insert(mdlVertex_t((*i).vertindex[0], (*i).facesfront)));
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surface.indices().insert(inserter.insert(mdlVertex_t((*i).vertindex[1], (*i).facesfront)));
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surface.indices().insert(inserter.insert(mdlVertex_t((*i).vertindex[2], (*i).facesfront)));
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}
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}
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{
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surface.vertices().reserve(mdl_vertices.size());
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for(VertexBuffer<mdlVertex_t>::iterator i = mdl_vertices.begin(); i != mdl_vertices.end(); ++i)
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{
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surface.vertices().push_back(MDLVertex_construct(header, mdlXyzNormals[(*i).m_vertindex], mdlSts[(*i).m_vertindex], (*i).m_facesfront == MDL_FACES_FRONT));
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}
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}
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}
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surface.setShader(name);
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surface.updateAABB();
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}
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void MDLModel_read(Model& model, const byte* buffer, const char* name)
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{
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MDLSurface_read(model.newSurface(), buffer, name);
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model.updateAABB();
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}
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scene::Node& MDLModel_new(const byte* buffer, const char* name)
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{
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ModelNode* modelNode = new ModelNode();
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MDLModel_read(modelNode->model(), buffer, name);
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return modelNode->node();
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}
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scene::Node& MDLModel_default()
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{
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ModelNode* modelNode = new ModelNode();
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Model_constructNull(modelNode->model());
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return modelNode->node();
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}
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scene::Node& MDLModel_fromBuffer(unsigned char* buffer, const char* name)
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{
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if (!ident_equal(buffer, MDL_IDENT))
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{
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globalErrorStream() << "MDL read error: incorrect ident\n";
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return MDLModel_default();
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}
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else
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{
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return MDLModel_new(buffer, name);
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}
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}
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scene::Node& loadMDLModel(ArchiveFile& file)
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{
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ScopedArchiveBuffer buffer(file);
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return MDLModel_fromBuffer(buffer.buffer, file.getName());
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}
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