235 lines
7.7 KiB
C++
235 lines
7.7 KiB
C++
/*
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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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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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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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if ( m_facesfront < other.m_facesfront ) {
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return true;
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}
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if ( other.m_facesfront < m_facesfront ) {
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return false;
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}
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if ( m_vertindex < other.m_vertindex ) {
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return true;
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}
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if ( other.m_vertindex < m_vertindex ) {
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return false;
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}
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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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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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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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inputStream.seek( ( MDL_XYZNORMAL_SIZE * 4 ) + ( numframes * 4 ) + 16 );//group min_vec3 + max_vec3 + timings_float[numframes] + frame min_vec3 + max_vec3 + name_char[16]
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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.numverts );
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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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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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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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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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if ( !ident_equal( buffer, MDL_IDENT ) ) {
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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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ScopedArchiveBuffer buffer( file );
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return MDLModel_fromBuffer( buffer.buffer, file.getName() );
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}
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