worldspawn/plugins/brushexport/export.cpp

365 lines
10 KiB
C++

#include "export.h"
#include "globaldefs.h"
#include "debugging/debugging.h"
#include "ibrush.h"
#include "iscenegraph.h"
#include "iselection.h"
#include "stream/stringstream.h"
#include "stream/textfilestream.h"
#include <map>
// this is very evil, but right now there is no better way
#include "../../src/brush.h"
// for limNames
const int MAX_MATERIAL_NAME = 20;
/*
Abstract baseclass for modelexporters
the class collects all the data which then gets
exported through the WriteToFile method.
*/
class ExportData {
public:
ExportData(const std::set<std::string> &ignorelist, collapsemode mode, bool limNames, bool objs);
virtual ~ExportData(void);
virtual void BeginBrush(Brush &b);
virtual void AddBrushFace(Face &f);
virtual void EndBrush(void);
virtual bool WriteToFile(const std::string &path, collapsemode mode) const = 0;
protected:
// a group of faces
class group {
public:
std::string name;
std::list<const Face *> faces;
};
std::list<group> groups;
private:
// "textures/common/caulk" -> "caulk"
void GetShaderNameFromShaderPath(const char *path, std::string &name);
group *current;
collapsemode mode;
const std::set<std::string> &ignorelist;
};
ExportData::ExportData(const std::set<std::string> &_ignorelist, collapsemode _mode, bool _limNames, bool _objs)
: mode(_mode),
ignorelist(_ignorelist)
{
current = 0;
// in this mode, we need just one group
if (mode == COLLAPSE_ALL) {
groups.push_back(group());
current = &groups.back();
current->name = "all";
}
}
ExportData::~ExportData(void)
{
}
void ExportData::BeginBrush(Brush &b)
{
// create a new group for each brush
if (mode == COLLAPSE_NONE) {
groups.push_back(group());
current = &groups.back();
StringOutputStream str(256);
str << "Brush" << (const unsigned int) groups.size();
current->name = str.c_str();
}
}
void ExportData::EndBrush(void)
{
// all faces of this brush were on the ignorelist, discard the emptygroup
if (mode == COLLAPSE_NONE) {
ASSERT_NOTNULL(current);
if (current->faces.empty()) {
groups.pop_back();
current = 0;
}
}
}
void ExportData::AddBrushFace(Face &f)
{
std::string shadername;
GetShaderNameFromShaderPath(f.GetShader(), shadername);
// ignore faces from ignore list
if (ignorelist.find(shadername) != ignorelist.end()) {
return;
}
if (mode == COLLAPSE_BY_MATERIAL) {
// find a group for this material
current = 0;
const std::list<group>::iterator end(groups.end());
for (std::list<group>::iterator it(groups.begin()); it != end; ++it) {
if (it->name == shadername) {
current = &(*it);
}
}
// no group found, create one
if (!current) {
groups.push_back(group());
current = &groups.back();
current->name = shadername;
}
}
ASSERT_NOTNULL(current);
// add face to current group
current->faces.push_back(&f);
#if GDEF_DEBUG
globalOutputStream() << "Added Face to group " << current->name.c_str() << "\n";
#endif
}
void ExportData::GetShaderNameFromShaderPath(const char *path, std::string &name)
{
std::string tmp(path);
size_t last_slash = tmp.find_last_of("/");
if (last_slash != std::string::npos && last_slash == (tmp.length() - 1)) {
name = path;
} else {
name = tmp.substr(last_slash + 1, tmp.length() - last_slash);
}
#if GDEF_DEBUG
globalOutputStream() << "Last: " << (const unsigned int) last_slash << " " << "length: "
<< (const unsigned int) tmp.length() << "Name: " << name.c_str() << "\n";
#endif
}
/*
Exporter writing facedata as wavefront object
*/
class ExportDataAsWavefront : public ExportData {
private:
bool expmat;
bool limNames;
bool objs;
public:
ExportDataAsWavefront(const std::set<std::string> &_ignorelist, collapsemode _mode, bool _expmat, bool _limNames,
bool _objs)
: ExportData(_ignorelist, _mode, _limNames, _objs)
{
expmat = _expmat;
limNames = _limNames;
objs = _objs;
}
bool WriteToFile(const std::string &path, collapsemode mode) const;
};
bool ExportDataAsWavefront::WriteToFile(const std::string &path, collapsemode mode) const
{
std::string objFile = path;
if (path.compare(path.length() - 4, 4, ".obj") != 0) {
objFile += ".obj";
}
std::string mtlFile = objFile.substr(0, objFile.length() - 4) + ".mtl";
std::set<std::string> materials;
TextFileOutputStream out(objFile.c_str());
if (out.failed()) {
globalErrorStream() << "Unable to open file\n";
return false;
}
out
<< "# Wavefront Objectfile exported with radiants brushexport plugin 3.0 by Thomas 'namespace' Nitschke, spam@codecreator.net\n\n";
if (expmat) {
size_t last = mtlFile.find_last_of("//");
std::string mtllib = mtlFile.substr(last + 1, mtlFile.size() - last).c_str();
out << "mtllib " << mtllib.c_str() << "\n";
}
unsigned int vertex_count = 0;
const std::list<ExportData::group>::const_iterator gend(groups.end());
for (std::list<ExportData::group>::const_iterator git(groups.begin()); git != gend; ++git) {
typedef std::multimap<std::string, std::string> bm;
bm brushMaterials;
typedef std::pair<std::string, std::string> String_Pair;
const std::list<const Face *>::const_iterator end(git->faces.end());
// submesh starts here
if (objs) {
out << "\no ";
} else {
out << "\ng ";
}
out << git->name.c_str() << "\n";
// material
if (expmat && mode == COLLAPSE_ALL) {
out << "usemtl material" << "\n\n";
materials.insert("material");
}
for (std::list<const Face *>::const_iterator it(git->faces.begin()); it != end; ++it) {
const Winding &w((*it)->getWinding());
// vertices
for (size_t i = 0; i < w.numpoints; ++i) {
out << "v " << FloatFormat(w[i].vertex.x(), 1, 6) << " " << FloatFormat(w[i].vertex.z(), 1, 6) << " "
<< FloatFormat(w[i].vertex.y(), 1, 6) << "\n";
}
}
out << "\n";
for (std::list<const Face *>::const_iterator it(git->faces.begin()); it != end; ++it) {
const Winding &w((*it)->getWinding());
// texcoords
for (size_t i = 0; i < w.numpoints; ++i) {
out << "vt " << FloatFormat(w[i].texcoord.x(), 1, 6) << " " << FloatFormat(w[i].texcoord.y(), 1, 6)
<< "\n";
}
}
for (std::list<const Face *>::const_iterator it(git->faces.begin()); it != end; ++it) {
const Winding &w((*it)->getWinding());
// faces
StringOutputStream faceLine(256);
faceLine << "\nf";
for (size_t i = 0; i < w.numpoints; ++i, ++vertex_count) {
faceLine << " " << vertex_count + 1 << "/" << vertex_count + 1;
}
if (mode != COLLAPSE_ALL) {
materials.insert((*it)->getShader().getShader());
brushMaterials.insert(String_Pair((*it)->getShader().getShader(), faceLine.c_str()));
} else {
out << faceLine.c_str();
}
}
if (mode != COLLAPSE_ALL) {
std::string lastMat;
std::string mat;
std::string faces;
for (bm::iterator iter = brushMaterials.begin(); iter != brushMaterials.end(); iter++) {
mat = (*iter).first.c_str();
faces = (*iter).second.c_str();
if (mat != lastMat) {
if (limNames && mat.size() > MAX_MATERIAL_NAME) {
out << "\nusemtl " << mat.substr(mat.size() - MAX_MATERIAL_NAME, mat.size()).c_str();
} else {
out << "\nusemtl " << mat.c_str();
}
}
out << faces.c_str();
lastMat = mat;
}
}
out << "\n";
}
if (expmat) {
TextFileOutputStream outMtl(mtlFile.c_str());
if (outMtl.failed()) {
globalErrorStream() << "Unable to open material file\n";
return false;
}
outMtl << "# Wavefront material file exported with NetRadiants brushexport plugin.\n";
outMtl << "# Material Count: " << (const Unsigned) materials.size() << "\n\n";
for (std::set<std::string>::const_iterator it(materials.begin()); it != materials.end(); ++it) {
if (limNames && it->size() > MAX_MATERIAL_NAME) {
outMtl << "newmtl " << it->substr(it->size() - MAX_MATERIAL_NAME, it->size()).c_str() << "\n";
} else {
outMtl << "newmtl " << it->c_str() << "\n";
}
}
}
return true;
}
class ForEachFace : public BrushVisitor {
public:
ForEachFace(ExportData &_exporter)
: exporter(_exporter)
{}
void visit(Face &face) const
{
exporter.AddBrushFace(face);
}
private:
ExportData &exporter;
};
class ForEachSelected : public SelectionSystem::Visitor {
public:
ForEachSelected(ExportData &_exporter)
: exporter(_exporter)
{}
void visit(scene::Instance &instance) const
{
BrushInstance *bptr = InstanceTypeCast<BrushInstance>::cast(instance);
if (bptr) {
Brush &brush(bptr->getBrush());
exporter.BeginBrush(brush);
ForEachFace face_vis(exporter);
brush.forEachFace(face_vis);
exporter.EndBrush();
}
}
private:
ExportData &exporter;
};
bool ExportSelection(const std::set<std::string> &ignorelist, collapsemode m, bool exmat, const std::string &path,
bool limNames, bool objs)
{
ExportDataAsWavefront exporter(ignorelist, m, exmat, limNames, objs);
ForEachSelected vis(exporter);
GlobalSelectionSystem().foreachSelected(vis);
return exporter.WriteToFile(path, m);
}