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restructured ogre nif code (struct -> class with singleton), formated code

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actorid
Armin Preiml 15 years ago
parent fa077ccdc4
commit 181b538e4a
2 changed files with 555 additions and 469 deletions
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206
components/nifogre/ogre_nif_loader.cpp
Unescape Escape View File

@ -26,11 +26,11 @@
#include <stdio.h>
#include <libs/mangle/vfs/servers/ogre_vfs.hpp>
#include "components/nif/nif_file.hpp"
#include "components/nif/node.hpp"
#include "components/nif/data.hpp"
#include "components/nif/property.hpp"
#include "libs/platform/strings.h"
#include "../nif/nif_file.hpp"
#include "../nif/node.hpp"
#include "../nif/data.hpp"
#include "../nif/property.hpp"
#include <libs/platform/strings.h>
// For warning messages
#include <iostream>
@ -45,21 +45,27 @@ using namespace Ogre;
using namespace Nif;
using namespace Mangle::VFS;
// This is the interface to the Ogre resource system. It allows us to
// load NIFs from BSAs, in the file system and in any other place we
// tell Ogre to look (eg. in zip or rar files.) It's also used to
// check for the existence of texture files, so we can exchange the
// extension from .tga to .dds if the texture is missing.
static OgreVFS *vfs;
NIFLoader& NIFLoader::getSingleton()
{
static NIFLoader instance;
return instance;
}
NIFLoader* NIFLoader::getSingletonPtr()
{
return &getSingleton();
}
// Singleton instance used by load()
static NIFLoader g_sing;
void NIFLoader::warn(string msg)
{
std::cerr << "NIFLoader: Warn:" << msg << "\n";
}
// Makeshift error reporting system
static string errName;
static void warn(const string &msg)
void NIFLoader::fail(string msg)
{
cout << "WARNING (NIF:" << errName << "): " << msg << endl;
std::cerr << "NIFLoader: Fail: "<< msg << std::endl;
assert(1);
}
// Helper class that computes the bounding box and of a mesh
@ -77,8 +83,8 @@ class BoundsFinder
void add(float f)
{
if(f > max) max = f;
if(f < min) min = f;
if (f > max) max = f;
if (f < min) min = f;
}
// Return Max(max**2, min**2)
@ -86,7 +92,7 @@ class BoundsFinder
{
float m1 = max*max;
float m2 = min*min;
if(m1 >= m2) return m1;
if (m1 >= m2) return m1;
return m2;
}
};
@ -99,7 +105,7 @@ public:
// point.
void add(float *data, int verts)
{
for(int i=0;i<verts;i++)
for (int i=0;i<verts;i++)
{
X.add(*(data++));
Y.add(*(data++));
@ -126,12 +132,24 @@ public:
return sqrt(X.getMaxSquared() + Y.getMaxSquared() + Z.getMaxSquared());
}
float minX() { return X.min; }
float maxX() { return X.max; }
float minY() { return Y.min; }
float maxY() { return Y.max; }
float minZ() { return Z.min; }
float maxZ() { return Z.max; }
float minX() {
return X.min;
}
float maxX() {
return X.max;
}
float minY() {
return Y.min;
}
float maxY() {
return Y.max;
}
float minZ() {
return Z.min;
}
float maxZ() {
return Z.max;
}
};
// Conversion of blend / test mode from NIF -> OGRE.
@ -177,7 +195,7 @@ static CompareFunction getTestMode(int mode)
}
*/
static void createMaterial(const String &name,
void NIFLoader::createMaterial(const String &name,
const Vector &ambient,
const Vector &diffuse,
const Vector &specular,
@ -186,17 +204,18 @@ static void createMaterial(const String &name,
float alphaFlags, float alphaTest,
const String &texName)
{
MaterialPtr material = MaterialManager::getSingleton().create(name, "General");
MaterialPtr material = MaterialManager::getSingleton().create(name, resourceGroup);
// This assigns the texture to this material. If the texture name is
// a file name, and this file exists (in a resource directory), it
// will automatically be loaded when needed. If not (such as for
// internal NIF textures that we might support later), we should
// already have inserted a manual loader for the texture.
if(!texName.empty())
if (!texName.empty())
{
Pass *pass = material->getTechnique(0)->getPass(0);
/*TextureUnitState *txt =*/ pass->createTextureUnitState(texName);
/*TextureUnitState *txt =*/
pass->createTextureUnitState(texName);
/* As of yet UNTESTED code from Chris:
pass->setTextureFiltering(Ogre::TFO_ANISOTROPIC);
@ -226,12 +245,12 @@ static void createMaterial(const String &name,
*/
// Add transparency if NiAlphaProperty was present
if(alphaFlags != -1)
if (alphaFlags != -1)
{
// The 237 alpha flags are by far the most common. Check
// NiAlphaProperty in nif/property.h if you need to decode
// other values. 237 basically means normal transparencly.
if(alphaFlags == 237)
if (alphaFlags == 237)
{
// Enable transparency
pass->setSceneBlending(SBT_TRANSPARENT_ALPHA);
@ -254,14 +273,14 @@ static void createMaterial(const String &name,
// Takes a name and adds a unique part to it. This is just used to
// make sure that all materials are given unique names.
static String getUniqueName(const String &input)
String NIFLoader::getUniqueName(const String &input)
{
static int addon = 0;
static char buf[8];
snprintf(buf, 8, "_%d", addon++);
// Don't overflow the buffer
if(addon > 999999) addon = 0;
if (addon > 999999) addon = 0;
return input + buf;
}
@ -270,13 +289,13 @@ static String getUniqueName(const String &input)
// does not, change the string IN PLACE to say .dds instead and try
// that. The texture may still not exist, but no information of value
// is lost in that case.
static void findRealTexture(String &texName)
void NIFLoader::findRealTexture(String &texName)
{
assert(vfs);
if(vfs->isFile(texName)) return;
if (vfs->isFile(texName)) return;
int len = texName.size();
if(len < 4) return;
if (len < 4) return;
// Change texture extension to .dds
texName[len-3] = 'd';
@ -286,7 +305,7 @@ static void findRealTexture(String &texName)
// Convert Nif::NiTriShape to Ogre::SubMesh, attached to the given
// mesh.
static void createOgreMesh(Mesh *mesh, NiTriShape *shape, const String &material)
void NIFLoader::createOgreMesh(Mesh *mesh, NiTriShape *shape, const String &material)
{
NiTriShapeData *data = shape->data.getPtr();
SubMesh *sub = mesh->createSubMesh(shape->name.toString());
@ -312,7 +331,7 @@ static void createOgreMesh(Mesh *mesh, NiTriShape *shape, const String &material
bind->setBinding(nextBuf++, vbuf);
// Vertex normals
if(data->normals.length)
if (data->normals.length)
{
decl->addElement(nextBuf, 0, VET_FLOAT3, VES_NORMAL);
vbuf = HardwareBufferManager::getSingleton().createVertexBuffer(
@ -323,13 +342,13 @@ static void createOgreMesh(Mesh *mesh, NiTriShape *shape, const String &material
}
// Vertex colors
if(data->colors.length)
if (data->colors.length)
{
const float *colors = data->colors.ptr;
RenderSystem* rs = Root::getSingleton().getRenderSystem();
std::vector<RGBA> colorsRGB(numVerts);
RGBA *pColour = &colorsRGB.front();
for(int i=0; i<numVerts; i++)
for (int i=0; i<numVerts; i++)
{
rs->convertColourValue(ColourValue(colors[0],colors[1],colors[2],
colors[3]),pColour++);
@ -344,7 +363,7 @@ static void createOgreMesh(Mesh *mesh, NiTriShape *shape, const String &material
}
// Texture UV coordinates
if(data->uvlist.length)
if (data->uvlist.length)
{
decl->addElement(nextBuf, 0, VET_FLOAT2, VES_TEXTURE_COORDINATES);
vbuf = HardwareBufferManager::getSingleton().createVertexBuffer(
@ -357,7 +376,7 @@ static void createOgreMesh(Mesh *mesh, NiTriShape *shape, const String &material
// Triangle faces
int numFaces = data->triangles.length;
if(numFaces)
if (numFaces)
{
HardwareIndexBufferSharedPtr ibuf = HardwareBufferManager::getSingleton().
createIndexBuffer(HardwareIndexBuffer::IT_16BIT,
@ -370,11 +389,12 @@ static void createOgreMesh(Mesh *mesh, NiTriShape *shape, const String &material
}
// Set material if one was given
if(!material.empty()) sub->setMaterialName(material);
if (!material.empty()) sub->setMaterialName(material);
/* Old commented D code. Might be useful when reimplementing
animation.
// Assign this submesh to the given bone
//TODO: Must use niskininstance!
/*if (bone)
{
VertexBoneAssignment v;
v.boneIndex = ((Bone*)bone)->getHandle();
v.weight = 1.0;
@ -386,7 +406,8 @@ static void createOgreMesh(Mesh *mesh, NiTriShape *shape, const String &material
v.vertexIndex = i;
sub->addBoneAssignment(v);
}
*/
}*/
}
// Helper math functions. Reinventing linear algebra for the win!
@ -394,7 +415,7 @@ static void createOgreMesh(Mesh *mesh, NiTriShape *shape, const String &material
// Computes B = AxB (matrix*matrix)
static void matrixMul(const Matrix &A, Matrix &B)
{
for(int i=0;i<3;i++)
for (int i=0;i<3;i++)
{
float a = B.v[0].array[i];
float b = B.v[1].array[i];
@ -415,7 +436,7 @@ static void vectorMulAdd(const Matrix &A, const Vector &B, float *C, float scale
float c = C[2];
// Perform matrix multiplication, scaling and addition
for(int i=0;i<3;i++)
for (int i=0;i<3;i++)
C[i] = B.array[i] + (a*A.v[i].array[0] + b*A.v[i].array[1] + c*A.v[i].array[2])*scale;
}
@ -428,11 +449,11 @@ static void vectorMul(const Matrix &A, float *C)
float c = C[2];
// Perform matrix multiplication, scaling and addition
for(int i=0;i<3;i++)
for (int i=0;i<3;i++)
C[i] = a*A.v[i].array[0] + b*A.v[i].array[1] + c*A.v[i].array[2];
}
static void handleNiTriShape(Mesh *mesh, NiTriShape *shape, int flags, BoundsFinder &bounds)
void NIFLoader::handleNiTriShape(Mesh *mesh, NiTriShape *shape, int flags, BoundsFinder &bounds)
{
assert(shape != NULL);
@ -442,7 +463,7 @@ static void handleNiTriShape(Mesh *mesh, NiTriShape *shape, int flags, BoundsFin
bool bbcollide = (flags & 0x04) != 0; // Use bounding box for collision
// Bounding box collision isn't implemented, always use mesh for now.
if(bbcollide)
if (bbcollide)
{
collide = true;
bbcollide = false;
@ -450,10 +471,13 @@ static void handleNiTriShape(Mesh *mesh, NiTriShape *shape, int flags, BoundsFin
// If the object was marked "NCO" earlier, it shouldn't collide with
// anything.
if(flags & 0x800)
{ collide = false; bbcollide = false; }
if (flags & 0x800)
{
collide = false;
bbcollide = false;
}
if(!collide && !bbcollide && hidden)
if (!collide && !bbcollide && hidden)
// This mesh apparently isn't being used for anything, so don't
// bother setting it up.
return;
@ -462,7 +486,7 @@ static void handleNiTriShape(Mesh *mesh, NiTriShape *shape, int flags, BoundsFin
String material;
// Skip the entire material phase for hidden nodes
if(!hidden)
if (!hidden)
{
// These are set below if present
NiTexturingProperty *t = NULL;
@ -472,27 +496,27 @@ static void handleNiTriShape(Mesh *mesh, NiTriShape *shape, int flags, BoundsFin
// Scan the property list for material information
PropertyList &list = shape->props;
int n = list.length();
for(int i=0; i<n; i++)
for (int i=0; i<n; i++)
{
// Entries may be empty
if(!list.has(i)) continue;
if (!list.has(i)) continue;
Property *pr = &list[i];
if(pr->recType == RC_NiTexturingProperty)
if (pr->recType == RC_NiTexturingProperty)
t = (NiTexturingProperty*)pr;
else if(pr->recType == RC_NiMaterialProperty)
else if (pr->recType == RC_NiMaterialProperty)
m = (NiMaterialProperty*)pr;
else if(pr->recType == RC_NiAlphaProperty)
else if (pr->recType == RC_NiAlphaProperty)
a = (NiAlphaProperty*)pr;
}
// Texture
String texName;
if(t && t->textures[0].inUse)
if (t && t->textures[0].inUse)
{
NiSourceTexture *st = t->textures[0].texture.getPtr();
if(st->external)
if (st->external)
{
SString tname = st->filename;
@ -518,14 +542,14 @@ static void handleNiTriShape(Mesh *mesh, NiTriShape *shape, int flags, BoundsFin
// Alpha modifiers
int alphaFlags = -1;
ubyte alphaTest = 0;
if(a)
if (a)
{
alphaFlags = a->flags;
alphaTest = a->data->threshold;
}
// Material
if(m || !texName.empty())
if (m || !texName.empty())
{
// If we're here, then this mesh has a material. Thus we
// need to calculate a snappy material name. It should
@ -533,7 +557,7 @@ static void handleNiTriShape(Mesh *mesh, NiTriShape *shape, int flags, BoundsFin
// be unique. One mesh may use many materials.
material = getUniqueName(mesh->getName());
if(m)
if (m)
{
// Use NiMaterialProperty data to create the data
const S_MaterialProperty *d = m->data;
@ -545,7 +569,7 @@ static void handleNiTriShape(Mesh *mesh, NiTriShape *shape, int flags, BoundsFin
// We only have a texture name. Create a default
// material for it.
Vector zero, one;
for(int i=0; i<3;i++)
for (int i=0; i<3;i++)
{
zero.array[i] = 0.0;
one.array[i] = 1.0;
@ -573,24 +597,24 @@ static void handleNiTriShape(Mesh *mesh, NiTriShape *shape, int flags, BoundsFin
const Matrix &rot = shape->trafo->rotation;
const Vector &pos = shape->trafo->pos;
float scale = shape->trafo->scale;
for(int i=0; i<numVerts; i++)
for (int i=0; i<numVerts; i++)
{
vectorMulAdd(rot, pos, ptr, scale);
ptr += 3;
}
// Remember to rotate all the vertex normals as well
if(data->normals.length)
if (data->normals.length)
{
ptr = (float*)data->normals.ptr;
for(int i=0; i<numVerts; i++)
for (int i=0; i<numVerts; i++)
{
vectorMul(rot, ptr);
ptr += 3;
}
}
if(!hidden)
if (!hidden)
{
// Add this vertex set to the bounding box
bounds.add(optr, numVerts);
@ -600,7 +624,7 @@ static void handleNiTriShape(Mesh *mesh, NiTriShape *shape, int flags, BoundsFin
}
}
static void handleNode(Mesh* mesh, Nif::Node *node, int flags,
void NIFLoader::handleNode(Mesh* mesh, Nif::Node *node, int flags,
const Transformation *trafo, BoundsFinder &bounds)
{
// Accumulate the flags from all the child nodes. This works for all
@ -609,22 +633,22 @@ static void handleNode(Mesh* mesh, Nif::Node *node, int flags,
// Check for extra data
Extra *e = node;
while(!e->extra.empty())
while (!e->extra.empty())
{
// Get the next extra data in the list
e = e->extra.getPtr();
assert(e != NULL);
if(e->recType == RC_NiStringExtraData)
if (e->recType == RC_NiStringExtraData)
{
// String markers may contain important information
// affecting the entire subtree of this node
NiStringExtraData *sd = (NiStringExtraData*)e;
if(sd->string == "NCO")
if (sd->string == "NCO")
// No collision. Use an internal flag setting to mark this.
flags |= 0x800;
else if(sd->string == "MRK")
else if (sd->string == "MRK")
// Marker objects. These are only visible in the
// editor. Until and unless we add an editor component to
// the engine, just skip this entire node.
@ -634,7 +658,7 @@ static void handleNode(Mesh* mesh, Nif::Node *node, int flags,
// Apply the parent transformation to this node. We overwrite the
// existing data with the final transformation.
if(trafo)
if (trafo)
{
// Get a non-const reference to the node's data, since we're
// overwriting it. TODO: Is this necessary?
@ -654,17 +678,19 @@ static void handleNode(Mesh* mesh, Nif::Node *node, int flags,
}
// For NiNodes, loop through children
if(node->recType == RC_NiNode)
if (node->recType == RC_NiNode)
{
NodeList &list = ((NiNode*)node)->children;
int n = list.length();
for(int i=0; i<n; i++)
for (int i=0; i<n; i++)
{
if(list.has(i))
if (list.has(i))
handleNode(mesh, &list[i], flags, node->trafo, bounds);
}
}
else if(node->recType == RC_NiTriShape)
else if (node->recType == RC_NiTriShape)
// For shapes
handleNiTriShape(mesh, dynamic_cast<NiTriShape*>(node), flags, bounds);
}
@ -672,7 +698,7 @@ static void handleNode(Mesh* mesh, Nif::Node *node, int flags,
void NIFLoader::loadResource(Resource *resource)
{
// Set up the VFS if it hasn't been done already
if(!vfs) vfs = new OgreVFS("General");
if (!vfs) vfs = new OgreVFS(resourceGroup);
// Get the mesh
Mesh *mesh = dynamic_cast<Mesh*>(resource);
@ -680,8 +706,8 @@ void NIFLoader::loadResource(Resource *resource)
// Look it up
const String &name = mesh->getName();
errName = name; // Set name for error messages
if(!vfs->isFile(name))
if (!vfs->isFile(name))
{
warn("File not found.");
return;
@ -696,7 +722,7 @@ void NIFLoader::loadResource(Resource *resource)
// likely a sign of incomplete code rather than faulty input.
NIFFile nif(vfs->open(name), name);
if(nif.numRecords() < 1)
if (nif.numRecords() < 1)
{
warn("Found no records in NIF.");
return;
@ -708,7 +734,7 @@ void NIFLoader::loadResource(Resource *resource)
Nif::Node *node = dynamic_cast<Nif::Node*>(r);
if(node == NULL)
if (node == NULL)
{
warn("First record in file was not a node, but a " +
r->recName.toString() + ". Skipping file.");
@ -719,7 +745,7 @@ void NIFLoader::loadResource(Resource *resource)
handleNode(mesh, node, 0, NULL, bounds);
// Finally, set the bounding value.
if(bounds.isValid())
if (bounds.isValid())
{
mesh->_setBounds(AxisAlignedBox(bounds.minX(), bounds.minY(), bounds.minZ(),
bounds.maxX(), bounds.maxY(), bounds.maxZ()));
@ -734,11 +760,11 @@ MeshPtr NIFLoader::load(const std::string &name,
// Check if the resource already exists
ResourcePtr ptr = m->getByName(name, group);
if(!ptr.isNull())
if (!ptr.isNull())
return MeshPtr(ptr);
// Nope, create a new one.
return MeshManager::getSingleton().createManual(name, group, &g_sing);
return MeshManager::getSingleton().createManual(name, group, NIFLoader::getSingletonPtr());
}
/* More code currently not in use, from the old D source. This was

64
components/nifogre/ogre_nif_loader.hpp
Unescape Escape View File

@ -27,6 +27,26 @@
#include <OgreResource.h>
#include <OgreMesh.h>
#include <assert.h>
#include <string>
class BoundsFinder;
namespace Nif
{
class Node;
class Transformation;
class NiTriShape;
class Vector;
}
namespace Mangle
{
namespace VFS
{
class OgreVFS;
}
}
/** Manual resource loader for NIF meshes. This is the main class
responsible for translating the internal NIF mesh structure into
@ -43,12 +63,52 @@
very resource intensive, and can safely be done for a large number
of meshes at load time.
*/
struct NIFLoader : Ogre::ManualResourceLoader
class NIFLoader : Ogre::ManualResourceLoader
{
void loadResource(Ogre::Resource *resource);
public:
static NIFLoader& getSingleton();
static NIFLoader* getSingletonPtr();
virtual void loadResource(Ogre::Resource *resource);
static Ogre::MeshPtr load(const std::string &name,
const std::string &group="General");
private:
NIFLoader() : resourceGroup("General") {}
NIFLoader(NIFLoader& n) {}
void warn(std::string msg);
void fail(std::string msg);
void handleNode(Ogre::Mesh* mesh, Nif::Node *node, int flags,
const Nif::Transformation *trafo, BoundsFinder &bounds);
void handleNiTriShape(Ogre::Mesh *mesh, Nif::NiTriShape *shape, int flags, BoundsFinder &bounds);
void createOgreMesh(Ogre::Mesh *mesh, Nif::NiTriShape *shape, const Ogre::String &material);
void createMaterial(const Ogre::String &name,
const Nif::Vector &ambient,
const Nif::Vector &diffuse,
const Nif::Vector &specular,
const Nif::Vector &emissive,
float glossiness, float alpha,
float alphaFlags, float alphaTest,
const Ogre::String &texName);
void findRealTexture(Ogre::String &texName);
Ogre::String getUniqueName(const Ogre::String &input);
// This is the interface to the Ogre resource system. It allows us to
// load NIFs from BSAs, in the file system and in any other place we
// tell Ogre to look (eg. in zip or rar files.) It's also used to
// check for the existence of texture files, so we can exchange the
// extension from .tga to .dds if the texture is missing.
Mangle::VFS::OgreVFS *vfs;
std::string resourceGroup;
};
#endif

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