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c58afe8038
- IMeshLoader::setPreferredIndexType and getPreferredIndexType allow setting hints for the loaders if users prefer 16 or 32 bit meshbuffers. Loaders are free to ignore those hints (all but .obj will do that for now). - obj meshloader loads now 32-bit buffers when setPreferredIndexType is set to EIT_32BIT. NOTE: It's 16 bit meshes use now also an IDynamicMeshbuffer instead of an SMeshBuffer. That will break the code of people who accessed meshbuffer before by casting to SMeshBuffer* And might even be somewhat slower (lot's of virtual functions...), but shouldn't really matter and can maybe be a bit improved. Sorry about that, I considered keeping SMeshBuffer for 16-bit (still considering it), but it would add some overhead in code and I don't think it's worth that. If there are any complains I'll maybe consider it again. git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/trunk@6333 dfc29bdd-3216-0410-991c-e03cc46cb475
113 lines
3.5 KiB
C++
113 lines
3.5 KiB
C++
// Copyright (C) 2002-2012 Nikolaus Gebhardt
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// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#ifndef IRR_I_MESH_LOADER_H_INCLUDED
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#define IRR_I_MESH_LOADER_H_INCLUDED
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#include "IReferenceCounted.h"
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#include "path.h"
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#include "IMeshTextureLoader.h"
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#include "SVertexIndex.h"
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namespace irr
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{
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namespace io
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{
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class IReadFile;
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} // end namespace io
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namespace scene
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{
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class IAnimatedMesh;
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//! Class which is able to load an animated mesh from a file.
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/** If you want Irrlicht be able to load meshes of
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currently unsupported file formats (e.g. .cob), then implement
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this and add your new Meshloader with
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ISceneManager::addExternalMeshLoader() to the engine. */
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class IMeshLoader : public virtual IReferenceCounted
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{
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public:
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//! Constructor
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IMeshLoader() : TextureLoader(0), PreferredIndexType(video::EIT_16BIT) {}
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//! Destructor
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virtual ~IMeshLoader()
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{
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if ( TextureLoader )
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TextureLoader->drop();
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}
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//! Returns true if the file might be loaded by this class.
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/** This decision should be based on the file extension (e.g. ".cob")
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only.
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\param filename Name of the file to test.
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\return True if the file might be loaded by this class. */
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virtual bool isALoadableFileExtension(const io::path& filename) const = 0;
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//! Creates/loads an animated mesh from the file.
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/** \param file File handler to load the file from.
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\return Pointer to the created mesh. Returns 0 if loading failed.
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If you no longer need the mesh, you should call IAnimatedMesh::drop().
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See IReferenceCounted::drop() for more information. */
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virtual IAnimatedMesh* createMesh(io::IReadFile* file) = 0;
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//! Set a new texture loader which this meshloader can use when searching for textures.
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/** NOTE: Not all meshloaders do support this interface. Meshloaders which
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support it will return a non-null value in getMeshTextureLoader from the start. Setting a
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texture-loader to a meshloader which doesn't support it won't help.
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\param textureLoader The textureloader to use. When set to NULL the mesh will not load any textures.
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*/
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virtual void setMeshTextureLoader(IMeshTextureLoader* textureLoader)
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{
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if ( textureLoader != TextureLoader )
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{
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if ( textureLoader )
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textureLoader->grab();
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if ( TextureLoader )
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TextureLoader->drop();
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TextureLoader = textureLoader;
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}
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}
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//! Get the texture loader used when this meshloader searches for textures.
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/** NOTE: not all meshloaders support this interface so this can return NULL.
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*/
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virtual IMeshTextureLoader* getMeshTextureLoader() const
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{
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return TextureLoader;
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}
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//! Give loader a hint if you would prefer 16 or 32 bit meshbuffers.
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/**
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Generally Irrlicht works with 16-bit meshbuffers so far.
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Rendering 32-bit meshbuffers works, other functions like
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mesh-writing and mesh manipulation might not work yet.
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NOTE: Most loaders will ignore this hint so far, but hopefully
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will care about it in the future.
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*/
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void setPreferredIndexType(irr::video::E_INDEX_TYPE typeHint)
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{
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PreferredIndexType = typeHint;
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}
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//! Return current preference user has for the index-size of meshbuffers
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/** Note that this is _not_ necessarily the type used by the meshloader */
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irr::video::E_INDEX_TYPE getPreferredIndexType() const
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{
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return PreferredIndexType;
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}
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protected:
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IMeshTextureLoader* TextureLoader;
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irr::video::E_INDEX_TYPE PreferredIndexType;
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};
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} // end namespace scene
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} // end namespace irr
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#endif
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