/* ----------------------------------------------------------------------------- This source file is part of OGRE (Object-oriented Graphics Rendering Engine) For the latest info, see http://www.ogre3d.org/ Copyright (c) 2000-2006 Torus Knot Software Ltd Also see acknowledgements in Readme.html This program is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2 of the License, or (at your option) any later version. This program 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this program; if not, write to the Free Software Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA, or go to http://www.gnu.org/copyleft/lesser.txt. You may alternatively use this source under the terms of a specific version of the OGRE Unrestricted License provided you have obtained such a license from Torus Knot Software Ltd. ----------------------------------------------------------------------------- */ #ifndef __MeshManager_H__ #define __MeshManager_H__ #include "OgrePrerequisites.h" #include "OgreResourceManager.h" #include "OgreSingleton.h" #include "OgreVector3.h" #include "OgreHardwareBuffer.h" #include "OgreMesh.h" #include "OgrePatchMesh.h" namespace Ogre { /** Handles the management of mesh resources. @remarks This class deals with the runtime management of mesh data; like other resource managers it handles the creation of resources (in this case mesh data), working within a fixed memory budget. */ class _OgreExport MeshManager: public ResourceManager, public Singleton, public ManualResourceLoader { public: MeshManager(); ~MeshManager(); /** Initialises the manager, only to be called by OGRE internally. */ void _initialise(void); /** Loads a mesh from a file, making it immediately available for use. @note If the model has already been loaded, the existing instance will be returned. @remarks Ogre loads model files from it's own proprietary format called .mesh. This is because having a single file format is better for runtime performance, and we also have control over pre-processed data (such as collision boxes, LOD reductions etc). @param filename The name of the .mesh file @param groupName The name of the resource group to assign the mesh to @param vertexBufferUsage The usage flags with which the vertex buffer(s) will be created @param indexBufferUsage The usage flags with which the index buffer(s) created for this mesh will be created with. @param vertexBufferShadowed If true, the vertex buffers will be shadowed by system memory copies for faster read access @param indexBufferShadowed If true, the index buffers will be shadowed by system memory copies for faster read access @param priority The priority of this mesh in the resource system */ MeshPtr load( const String& filename, const String& groupName, HardwareBuffer::Usage vertexBufferUsage = HardwareBuffer::HBU_STATIC_WRITE_ONLY, HardwareBuffer::Usage indexBufferUsage = HardwareBuffer::HBU_STATIC_WRITE_ONLY, bool vertexBufferShadowed = true, bool indexBufferShadowed = true); /** Creates a new Mesh specifically for manual definition rather than loading from an object file. @remarks Note that once you've defined your mesh, you must call Mesh::_setBounds and Mesh::_setBoundingRadius in order to define the bounds of your mesh. In previous versions of OGRE you could call Mesh::_updateBounds, but OGRE's support of write-only vertex buffers makes this no longer appropriate. @param name The name to give the new mesh @param groupName The name of the resource group to assign the mesh to @param loader ManualResourceLoader which will be called to load this mesh when the time comes. It is recommended that you populate this field in order that the mesh can be rebuilt should the need arise */ MeshPtr createManual( const String& name, const String& groupName, ManualResourceLoader* loader = 0); /** Creates a basic plane, by default majoring on the x/y axes facing positive Z. @param name The name to give the resulting mesh @param groupName The name of the resource group to assign the mesh to @param plane The orientation of the plane and distance from the origin @param width The width of the plane in world coordinates @param height The height of the plane in world coordinates @param xsegments The number of segements to the plane in the x direction @param ysegments The number of segements to the plane in the y direction @param normals If true, normals are created perpendicular to the plane @param numTexCoordSets The number of 2D texture coordinate sets created - by default the corners are created to be the corner of the texture. @param uTile The number of times the texture should be repeated in the u direction @param vTile The number of times the texture should be repeated in the v direction @param upVector The 'Up' direction of the plane. @param vertexBufferUsage The usage flag with which the vertex buffer for this plane will be created @param indexBufferUsage The usage flag with which the index buffer for this plane will be created @param vertexShadowBuffer If this flag is set to true, the vertex buffer will be created with a system memory shadow buffer, allowing you to read it back more efficiently than if it is in hardware @param indexShadowBuffer If this flag is set to true, the index buffer will be created with a system memory shadow buffer, allowing you to read it back more efficiently than if it is in hardware */ MeshPtr createPlane( const String& name, const String& groupName, const Plane& plane, Real width, Real height, int xsegments = 1, int ysegments = 1, bool normals = true, int numTexCoordSets = 1, Real uTile = 1.0f, Real vTile = 1.0f, const Vector3& upVector = Vector3::UNIT_Y, HardwareBuffer::Usage vertexBufferUsage = HardwareBuffer::HBU_STATIC_WRITE_ONLY, HardwareBuffer::Usage indexBufferUsage = HardwareBuffer::HBU_STATIC_WRITE_ONLY, bool vertexShadowBuffer = true, bool indexShadowBuffer = true); /** Creates a plane, which because of it's texture coordinates looks like a curved surface, useful for skies in a skybox. @param name The name to give the resulting mesh @param groupName The name of the resource group to assign the mesh to @param plane The orientation of the plane and distance from the origin @param width The width of the plane in world coordinates @param height The height of the plane in world coordinates @param curvature The curvature of the plane. Good values are between 2 and 65. Higher values are more curved leading to a smoother effect, lower values are less curved meaning more distortion at the horizons but a better distance effect. @param xsegments The number of segements to the plane in the x direction @param ysegments The number of segements to the plane in the y direction @param normals If true, normals are created perpendicular to the plane @param numTexCoordSets The number of 2D texture coordinate sets created - by default the corners are created to be the corner of the texture. @param uTile The number of times the texture should be repeated in the u direction @param vTile The number of times the texture should be repeated in the v direction @param upVector The 'Up' direction of the plane. @param orientation The orientation of the overall sphere that's used to create the illusion @param vertexBufferUsage The usage flag with which the vertex buffer for this plane will be created @param indexBufferUsage The usage flag with which the index buffer for this plane will be created @param vertexShadowBuffer If this flag is set to true, the vertex buffer will be created with a system memory shadow buffer, allowing you to read it back more efficiently than if it is in hardware @param indexShadowBuffer If this flag is set to true, the index buffer will be created with a system memory shadow buffer, allowing you to read it back more efficiently than if it is in hardware @param ySegmentsToKeep The number of segments from the top of the dome downwards to keep. -1 keeps all of them. This can save fillrate if you cannot see much of the sky lower down. */ MeshPtr createCurvedIllusionPlane( const String& name, const String& groupName, const Plane& plane, Real width, Real height, Real curvature, int xsegments = 1, int ysegments = 1, bool normals = true, int numTexCoordSets = 1, Real uTile = 1.0f, Real vTile = 1.0f, const Vector3& upVector = Vector3::UNIT_Y, const Quaternion& orientation = Quaternion::IDENTITY, HardwareBuffer::Usage vertexBufferUsage = HardwareBuffer::HBU_STATIC_WRITE_ONLY, HardwareBuffer::Usage indexBufferUsage = HardwareBuffer::HBU_STATIC_WRITE_ONLY, bool vertexShadowBuffer = true, bool indexShadowBuffer = true, int ySegmentsToKeep = -1); /** Creates a genuinely curved plane, by default majoring on the x/y axes facing positive Z. @param name The name to give the resulting mesh @param groupName The name of the resource group to assign the mesh to @param plane The orientation of the plane and distance from the origin @param width The width of the plane in world coordinates @param height The height of the plane in world coordinates @param bow The amount of 'bow' in the curved plane. (Could also be concidered the depth.) @param xsegments The number of segements to the plane in the x direction @param ysegments The number of segements to the plane in the y direction @param normals If true, normals are created perpendicular to the plane @param numTexCoordSets The number of 2D texture coordinate sets created - by default the corners are created to be the corner of the texture. @param uTile The number of times the texture should be repeated in the u direction @param vTile The number of times the texture should be repeated in the v direction @param upVector The 'Up' direction of the plane. @param vertexBufferUsage The usage flag with which the vertex buffer for this plane will be created @param indexBufferUsage The usage flag with which the index buffer for this plane will be created @param vertexShadowBuffer If this flag is set to true, the vertex buffer will be created with a system memory shadow buffer, allowing you to read it back more efficiently than if it is in hardware @param indexShadowBuffer If this flag is set to true, the index buffer will be created with a system memory shadow buffer, allowing you to read it back more efficiently than if it is in hardware */ MeshPtr createCurvedPlane( const String& name, const String& groupName, const Plane& plane, Real width, Real height, Real bow = 0.5f, int xsegments = 1, int ysegments = 1, bool normals = false, int numTexCoordSets = 1, Real xTile = 1.0f, Real yTile = 1.0f, const Vector3& upVector = Vector3::UNIT_Y, HardwareBuffer::Usage vertexBufferUsage = HardwareBuffer::HBU_STATIC_WRITE_ONLY, HardwareBuffer::Usage indexBufferUsage = HardwareBuffer::HBU_STATIC_WRITE_ONLY, bool vertexShadowBuffer = true, bool indexShadowBuffer = true); /** Creates a Bezier patch based on an array of control vertices. @param name The name to give the newly created mesh. @param groupName The name of the resource group to assign the mesh to @param controlPointBuffer A pointer to a buffer containing the vertex data which defines control points of the curves rather than actual vertices. Note that you are expected to provide not just position information, but potentially normals and texture coordinates too. The format of the buffer is defined in the VertexDeclaration parameter @param decaration VertexDeclaration describing the contents of the buffer. Note this declaration must _only_ draw on buffer source 0! @param width Specifies the width of the patch in control points. Note this parameter must greater than or equal to 3. @param height Specifies the height of the patch in control points. Note this parameter must greater than or equal to 3. @param uMaxSubdivisionLevel,vMaxSubdivisionLevel If you want to manually set the top level of subdivision, do it here, otherwise let the system decide. @param visibleSide Determines which side of the patch (or both) triangles are generated for. @param vbUsage Vertex buffer usage flags. Recommend the default since vertex buffer should be static. @param ibUsage Index buffer usage flags. Recommend the default since index buffer should be dynamic to change levels but not readable. @param vbUseShadow Flag to determine if a shadow buffer is generated for the vertex buffer. See HardwareBuffer for full details. @param ibUseShadow Flag to determine if a shadow buffer is generated for the index buffer. See HardwareBuffer for full details. */ PatchMeshPtr createBezierPatch( const String& name, const String& groupName, void* controlPointBuffer, VertexDeclaration *declaration, size_t width, size_t height, size_t uMaxSubdivisionLevel = PatchSurface::AUTO_LEVEL, size_t vMaxSubdivisionLevel = PatchSurface::AUTO_LEVEL, PatchSurface::VisibleSide visibleSide = PatchSurface::VS_FRONT, HardwareBuffer::Usage vbUsage = HardwareBuffer::HBU_STATIC_WRITE_ONLY, HardwareBuffer::Usage ibUsage = HardwareBuffer::HBU_DYNAMIC_WRITE_ONLY, bool vbUseShadow = true, bool ibUseShadow = true); /** Tells the mesh manager that all future meshes should prepare themselves for shadow volumes on loading. */ void setPrepareAllMeshesForShadowVolumes(bool enable); /** Retrieves whether all Meshes should prepare themselves for shadow volumes. */ bool getPrepareAllMeshesForShadowVolumes(void); /** Override standard Singleton retrieval. @remarks Why do we do this? Well, it's because the Singleton implementation is in a .h file, which means it gets compiled into anybody who includes it. This is needed for the Singleton template to work, but we actually only want it compiled into the implementation of the class based on the Singleton, not all of them. If we don't change this, we get link errors when trying to use the Singleton-based class from an outside dll. @par This method just delegates to the template version anyway, but the implementation stays in this single compilation unit, preventing link errors. */ static MeshManager& getSingleton(void); /** Override standard Singleton retrieval. @remarks Why do we do this? Well, it's because the Singleton implementation is in a .h file, which means it gets compiled into anybody who includes it. This is needed for the Singleton template to work, but we actually only want it compiled into the implementation of the class based on the Singleton, not all of them. If we don't change this, we get link errors when trying to use the Singleton-based class from an outside dll. @par This method just delegates to the template version anyway, but the implementation stays in this single compilation unit, preventing link errors. */ static MeshManager* getSingletonPtr(void); /** Gets the factor by which the bounding box of an entity is padded. Default is 0.01 */ Real getBoundsPaddingFactor(void); /** Sets the factor by which the bounding box of an entity is padded */ void setBoundsPaddingFactor(Real paddingFactor); /** @see ManualResourceLoader::loadResource */ void loadResource(Resource* res); protected: /// @copydoc ResourceManager::createImpl Resource* createImpl(const String& name, ResourceHandle handle, const String& group, bool isManual, ManualResourceLoader* loader, const NameValuePairList* createParams); /** Utility method for tesselating 2D meshes. */ void tesselate2DMesh(SubMesh* pSub, int meshWidth, int meshHeight, bool doubleSided = false, HardwareBuffer::Usage indexBufferUsage = HardwareBuffer::HBU_STATIC_WRITE_ONLY, bool indexSysMem = false); void createPrefabPlane(void); void createPrefabCube(void); void createPrefabSphere(void); /** Enum identifying the types of manual mesh built by this manager */ enum MeshBuildType { MBT_PLANE, MBT_CURVED_ILLUSION_PLANE, MBT_CURVED_PLANE }; /** Saved parameters used to (re)build a manual mesh built by this class */ struct MeshBuildParams { MeshBuildType type; Plane plane; Real width; Real height; Real curvature; int xsegments; int ysegments; bool normals; int numTexCoordSets; Real xTile; Real yTile; Vector3 upVector; Quaternion orientation; HardwareBuffer::Usage vertexBufferUsage; HardwareBuffer::Usage indexBufferUsage; bool vertexShadowBuffer; bool indexShadowBuffer; int ySegmentsToKeep; }; /** Map from resource pointer to parameter set */ typedef std::map MeshBuildParamsMap; MeshBuildParamsMap mMeshBuildParams; /** Utility method for manual loading a plane */ void loadManualPlane(Mesh* pMesh, MeshBuildParams& params); /** Utility method for manual loading a curved plane */ void loadManualCurvedPlane(Mesh* pMesh, MeshBuildParams& params); /** Utility method for manual loading a curved illusion plane */ void loadManualCurvedIllusionPlane(Mesh* pMesh, MeshBuildParams& params); bool mPrepAllMeshesForShadowVolumes; //the factor by which the bounding box of an entity is padded Real mBoundsPaddingFactor; }; } //namespace #endif