+/*
+Copyright (C) 2001-2006, William Joseph.
+Copyright (C) 2010-2014 COR Entertainment, LLC.
+All Rights Reserved.
+
+This file is part of GtkRadiant.
+
+GtkRadiant is free software; you can redistribute it and/or modify
+it under the terms of the GNU General Public License as published by
+the Free Software Foundation; either version 2 of the License, or
+(at your option) any later version.
+
+GtkRadiant is distributed in the hope that it will be useful,
+but WITHOUT ANY WARRANTY; without even the implied warranty of
+MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+GNU General Public License for more details.
+
+You should have received a copy of the GNU General Public License
+along with GtkRadiant; if not, write to the Free Software
+Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
+*/
+
+#include "iqm.h"
+
+#include "ifilesystem.h"
+#include "imodel.h"
+
+#include "imagelib.h"
+#include "bytestreamutils.h"
+
+#include "../md3model/model.h"
+
+typedef unsigned char byte;
+
+/*
+========================================================================
+
+.IQM triangle model file format
+
+========================================================================
+*/
+typedef struct
+{
+ float s;
+ float t;
+} iqmSt_t;
+
+void istream_read_iqmSt(PointerInputStream& inputStream, iqmSt_t& st)
+{
+ st.s = istream_read_float32_le(inputStream);
+ st.t = istream_read_float32_le(inputStream);
+}
+
+typedef struct
+{
+ unsigned int indices[3];
+} iqmTriangle_t;
+
+void istream_read_iqmTriangle(PointerInputStream& inputStream, iqmTriangle_t& triangle)
+{
+ triangle.indices[0] = istream_read_int32_le(inputStream);
+ triangle.indices[1] = istream_read_int32_le(inputStream);
+ triangle.indices[2] = istream_read_int32_le(inputStream);
+}
+
+typedef struct
+{
+ float v[3];
+} iqmPos_t;
+
+void istream_read_iqmPos(PointerInputStream& inputStream, iqmPos_t& iqmPos)
+{
+ iqmPos.v[0] = istream_read_float32_le(inputStream);
+ iqmPos.v[1] = istream_read_float32_le(inputStream);
+ iqmPos.v[2] = istream_read_float32_le(inputStream);
+}
+
+#define IQM_POSITION 0
+#define IQM_TEXCOORD 1
+#define IQM_NORMAL 2
+#define IQM_TANGENT 3
+#define IQM_BLENDINDEXES 4
+#define IQM_BLENDWEIGHTS 5
+#define IQM_COLOR 6
+#define IQM_CUSTOM 0x10
+
+#define IQM_BYTE 0
+#define IQM_UBYTE 1
+#define IQM_SHORT 2
+#define IQM_USHORT 3
+#define IQM_INT 4
+#define IQM_UINT 5
+#define IQM_HALF 6
+#define IQM_FLOAT 7
+#define IQM_DOUBLE 8
+
+// animflags
+#define IQM_LOOP 1
+
+typedef struct iqmHeader_s
+{
+ byte id[16];
+ unsigned int version;
+ unsigned int filesize;
+ unsigned int flags;
+ unsigned int num_text, ofs_text;
+ unsigned int num_meshes, ofs_meshes;
+ unsigned int num_vertexarrays, num_vertexes, ofs_vertexarrays;
+ unsigned int num_triangles, ofs_triangles, ofs_neighbors;
+ unsigned int num_joints, ofs_joints;
+ unsigned int num_poses, ofs_poses;
+ unsigned int num_anims, ofs_anims;
+ unsigned int num_frames, num_framechannels, ofs_frames, ofs_bounds;
+ unsigned int num_comment, ofs_comment;
+ unsigned int num_extensions, ofs_extensions;
+} iqmHeader_t;
+
+void istream_read_iqmHeader(PointerInputStream& inputStream, iqmHeader_t& header)
+{
+ inputStream.read(header.id, 16);
+#define READINT(x) header.x = istream_read_int32_le(inputStream);
+ READINT (version)
+ READINT (filesize)
+ READINT (flags)
+ READINT (num_text)
+ READINT (ofs_text)
+ READINT (num_meshes)
+ READINT (ofs_meshes)
+ READINT (num_vertexarrays)
+ READINT (num_vertexes)
+ READINT (ofs_vertexarrays)
+ READINT (num_triangles)
+ READINT (ofs_triangles)
+ READINT (ofs_neighbors)
+ READINT (num_joints)
+ READINT (ofs_joints)
+ READINT (num_frames)
+ READINT (num_framechannels)
+ READINT (ofs_frames)
+ READINT (ofs_bounds)
+ READINT (num_comment)
+ READINT (ofs_comment)
+ READINT (num_extensions)
+ READINT (ofs_extensions)
+#undef READINT
+}
+
+typedef struct iqmvertexarray_s
+{
+ unsigned int type;
+ unsigned int flags;
+ unsigned int format;
+ unsigned int size;
+ unsigned int offset;
+}
+iqmvertexarray_t;
+
+void istream_read_iqmVertexarray(PointerInputStream& inputStream, iqmvertexarray_t& out)
+{
+#define READINT(x) out.x = istream_read_int32_le(inputStream);
+ READINT (type)
+ READINT (flags)
+ READINT (format)
+ READINT (size)
+ READINT (offset)
+#undef READINT
+}
+
+
+ArbitraryMeshVertex IQMVertex_construct(const iqmPos_t* pos, const iqmPos_t* norm, const iqmSt_t* st)
+{
+ return ArbitraryMeshVertex(
+ Vertex3f (pos->v[0], pos->v[1], pos->v[2]),
+ Normal3f (norm->v[0], norm->v[1], norm->v[2]),
+ TexCoord2f (st->s, st->t)
+ );
+}
+
+void IQMSurface_read(Model& model, const byte* buffer, ArchiveFile& file)
+{
+ Surface& surface = model.newSurface();
+ iqmHeader_t header;
+ {
+ PointerInputStream inputStream(buffer);
+ istream_read_iqmHeader(inputStream, header);
+ }
+
+ {
+
+ UniqueVertexBuffer<ArbitraryMeshVertex> inserter(surface.vertices());
+ inserter.reserve(header.num_vertexes);
+
+ int ofs_position = -1, ofs_st = -1, ofs_normal = -1;
+ PointerInputStream vaStream (buffer + header.ofs_vertexarrays);
+ for (int i = 0; i < header.num_vertexarrays; i++)
+ {
+ iqmvertexarray_t va;
+ istream_read_iqmVertexarray (vaStream, va);
+
+ switch (va.type)
+ {
+ case IQM_POSITION:
+ if (va.format == IQM_FLOAT && va.size == 3)
+ ofs_position = va.offset;
+ break;
+ case IQM_TEXCOORD:
+ if (va.format == IQM_FLOAT && va.size == 2)
+ ofs_st = va.offset;
+ break;
+ case IQM_NORMAL:
+ if (va.format == IQM_FLOAT && va.size == 3)
+ ofs_normal = va.offset;
+ break;
+ }
+ }
+
+ surface.indices().reserve(header.num_vertexes);
+
+ PointerInputStream posStream(buffer + ofs_position);
+ Array<iqmPos_t> iqmPos(header.num_vertexes);
+ for(Array<iqmPos_t>::iterator i = iqmPos.begin(); i != iqmPos.end(); ++i)
+ {
+ istream_read_iqmPos(posStream, *i);
+ }
+
+ PointerInputStream normStream(buffer + ofs_normal);
+ Array<iqmPos_t> iqmNorm(header.num_vertexes);
+ for(Array<iqmPos_t>::iterator i = iqmNorm.begin(); i != iqmNorm.end(); ++i)
+ {
+ istream_read_iqmPos(normStream, *i);
+ }
+
+ Array<iqmSt_t> iqmSt(header.num_vertexes);
+ PointerInputStream stStream(buffer + ofs_st);
+ for(Array<iqmSt_t>::iterator i = iqmSt.begin(); i != iqmSt.end(); ++i)
+ {
+ istream_read_iqmSt(stStream, *i);
+ }
+
+ PointerInputStream triangleStream(buffer + header.ofs_triangles);
+ for(int i = 0; i < header.num_triangles; ++i)
+ {
+ iqmTriangle_t triangle;
+ istream_read_iqmTriangle(triangleStream, triangle);
+ for (int j = 0; j < 3; j++)
+ surface.indices().insert(inserter.insert(IQMVertex_construct(
+ &iqmPos[triangle.indices[j]],
+ &iqmNorm[triangle.indices[j]],
+ &iqmSt[triangle.indices[j]])));
+ }
+ }
+
+ surface.setShader("");
+ surface.updateAABB();
+}
+
+void IQMModel_read(Model& model, const byte* buffer, ArchiveFile& file)
+{
+ IQMSurface_read(model, buffer, file);
+ model.updateAABB();
+}
+
+scene::Node& IQMModel_new(const byte* buffer, ArchiveFile& file)
+{
+ ModelNode* modelNode = new ModelNode();
+ IQMModel_read(modelNode->model(), buffer, file);
+ return modelNode->node();
+}
+
+scene::Node& IQMModel_default()
+{
+ ModelNode* modelNode = new ModelNode();
+ Model_constructNull(modelNode->model());
+ return modelNode->node();
+}
+
+scene::Node& IQMModel_fromBuffer(unsigned char* buffer, ArchiveFile& file)
+{
+ if (memcmp(buffer, "INTERQUAKEMODEL", 16))
+ {
+ globalErrorStream() << "IQM read error: incorrect ident\n";
+ return IQMModel_default();
+ }
+ else
+ {
+ return IQMModel_new(buffer, file);
+ }
+}
+
+scene::Node& loadIQMModel(ArchiveFile& file)
+{
+ ScopedArchiveBuffer buffer(file);
+ return IQMModel_fromBuffer(buffer.buffer, file);
+}
projects / xonotic / netradiant.git / commitdiff