615 lines
22 KiB
C++
615 lines
22 KiB
C++
// NeL - MMORPG Framework <http://dev.ryzom.com/projects/nel/>
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// Copyright (C) 2010 Winch Gate Property Limited
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public License as
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// published by the Free Software Foundation, either version 3 of the
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// License, or (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public License for more details.
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//
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// You should have received a copy of the GNU Affero General Public License
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// along with this program. If not, see <http://www.gnu.org/licenses/>.
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#ifndef NL_PS_MESH_H
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#define NL_PS_MESH_H
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#include "nel/misc/types_nl.h"
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#include "nel/misc/class_registry.h"
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#include "nel/3d/ps_particle_basic.h"
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#include "nel/3d/ps_attrib.h"
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#include "nel/3d/ps_plane_basis.h"
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#include "nel/3d/vertex_buffer.h"
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#include "nel/3d/material.h"
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#include "nel/3d/index_buffer.h"
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#include "nel/3d/shape.h"
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#include "nel/3d/mesh.h"
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#include "nel/3d/particle_system.h"
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#include <string>
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#include <vector>
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#include <queue>
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namespace NLMISC
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{
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class IStream;
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struct EStream;
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}
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namespace NL3D {
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class CPSLocated;
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class CTransformShape;
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class CShapeBank;
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const uint ConstraintMeshMaxNumVerts = 512; // the maximum number of vertices for a constraint mesh
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const uint ConstraintMeshBufSize = 64; // number of meshs to be processed at once...
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const uint ConstraintMeshMaxNumPrerotatedModels = 32; // maximum number of meshs that can be prerotated
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/** This class is for mesh handling. It operates with any mesh, but it must insert them in the scene...
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* It is not very adapted for lots of little meshs..
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* To create the mesh basis, we use CPlaneBasis here. It give us the I and J vector of the basis for each mesh
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* and compute K ( K = I ^ J)
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*/
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class CPSMesh : public CPSParticle,
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public CPSSizedParticle,
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public CPSRotated3DPlaneParticle,
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public CPSRotated2DParticle,
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public CPSShapeParticle
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{
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public:
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/// construct the system by using the given shape for mesh
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CPSMesh(const std::string &shape = "")
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{
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_Shape = shape;
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if (CParticleSystem::getSerializeIdentifierFlag()) _Name = std::string("Mesh");
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}
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/// set a new shape for that kind of particles
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void setShape(const std::string &shape);
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/// get the shape used for those particles
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std::string getShape(void) const { return _Shape; }
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/// serialisation. Derivers must override this, and call their parent version
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virtual void serial(NLMISC::IStream &f) throw(NLMISC::EStream);
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virtual ~CPSMesh();
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NLMISC_DECLARE_CLASS(CPSMesh);
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/// return true if there are transparent faces in the object
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virtual bool hasTransparentFaces(void);
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/// return true if there are Opaque faces in the object
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virtual bool hasOpaqueFaces(void);
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/// from CPSParticle : return true if there are lightable faces in the object
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virtual bool hasLightableFaces();
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/// return the max number of faces needed for display. This is needed for LOD balancing
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virtual uint32 getNumWantedTris() const;
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// from CPSParticle
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virtual bool supportGlobalColorLighting() const { return false; }
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// from CPSParticle. No-op for meshs virtual float getZBias() { return 0.f; }
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virtual void setZBias(float value) {}
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virtual float getZBias() const { return 0.f; }
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// from CPSLocatedBindable
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virtual void onShow(bool shown);
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protected:
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/** Generate a new element for this bindable. They are generated according to the properties of the class
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*/
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virtual void newElement(const CPSEmitterInfo &info);
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/** Delete an element given its index
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* Attributes of the located that hold this bindable are still accessible for the index given
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* index out of range -> nl_assert
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*/
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virtual void deleteElement(uint32 index);
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virtual void step(TPSProcessPass pass);
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/// in fact we don't draw the meshs, we just update their pos...
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virtual void updatePos();
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/** Resize the bindable attributes containers. Size is the max number of element to be contained. DERIVERS MUST CALL THEIR PARENT VERSION
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* should not be called directly. Call CPSLocated::resize instead
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*/
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virtual void resize(uint32 size);
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//CSmartPtr<IShape> _Shape;
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std::string _Shape;
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// a container for mesh instances
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typedef CPSAttrib<CTransformShape *> TInstanceCont;
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TInstanceCont _Instances;
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virtual CPSLocated *getSizeOwner(void) { return _Owner; }
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virtual CPSLocated *getAngle2DOwner(void) { return _Owner; }
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virtual CPSLocated *getPlaneBasisOwner(void) { return _Owner; }
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void releaseAllRef();
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// create an instance of the current shape, or a dummy mesh if not found
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// NB : the object is hidden at start
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CTransformShape *createInstance();
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// remove all instance from scene and set their pointer to NULL
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void removeAllInstancesFromScene();
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};
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/** This class is for mesh that have very simple geometry. The constraint is that they can only have one matrix block.
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* They got a hint for constant rotation scheme. With little meshs, this is the best to draw a maximum of them
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*/
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class CPSConstraintMesh : public CPSParticle,
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public CPSSizedParticle,
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public CPSRotated3DPlaneParticle,
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public CPSHintParticleRotateTheSame,
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public CPSShapeParticle,
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public CPSColoredParticle
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{
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public:
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// errors during loading of meshs
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enum TError { ShapeFileNotLoaded = -1, ShapeFileIsNotAMesh = -2, ShapeHasTooMuchVertices = -3 };
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public:
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/// ctor
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CPSConstraintMesh();
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virtual ~CPSConstraintMesh();
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/** Construct the mesh by using the given mesh shape file.
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* No morphing is applied. The mesh is used 'as it'.
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*/
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void setShape(const std::string &meshFileName);
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/// Get the shape used for those particles. (must use no morphing or an assertion is raised)
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std::string getShape(void) const;
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/** Setup the mesh for morphing use. There are several restrictions :
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* - All meshs must have the same number of vertices
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* - All meshes must have the same vertex format
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* If these conditions are not met, a 'dummy' mesh will be used instead.
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* If there's only one mesh, no morphing is performed.
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* NB : Morphing not supported with precomputed rotations. First mesh is used instead
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* \param shapesNames A tab of string containing the names of the shapes
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* \param numShapes
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*/
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void setShapes(const std::string *shapesNames, uint numShapes);
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/// Set a shape by its index
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void setShape(uint index, const std::string &shapeName);
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/// Get a shape name by its index
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const std::string &getShape(uint index) const;
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/// Get the number of shapes used
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uint getNumShapes() const;
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/** Retrieve the names of the shapes
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* \param shapesNames :A tab of shapes with enough spaces to store the names
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*/
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void getShapesNames(std::string *shapesNames) const;
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/// Use a constant value for morphing. This discard any scheme for the morph value. The value must range from 0 to numberOfShapes
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void setMorphValue(float value);
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/// Get the value used for morphing
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float getMorphValue() const;
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/// Set a morphing scheme. The scheme is then owned by this object
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void setMorphScheme(CPSAttribMaker<float> *scheme);
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/// Get the current morphing scheme or NULL if no one was set
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CPSAttribMaker<float> *getMorphScheme();
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/// Get the current morphing scheme or NULL if no one was set. Const version
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const CPSAttribMaker<float> *getMorphScheme() const;
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/** Tells that all meshs are turning in the same manner, and only have a rotationnal bias
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* This is a lot faster then other method. Any previous set scheme for 3d rotation is kept.
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* \param: the number of rotation configuration we have. The more high it is, the slower it'll be
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* If this is too low, a lot of particles will have the same orientation
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* If it is 0, then the hint is disabled.
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* This can't be higher than ConstraintMeshMaxNumPrerotatedModels
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* \param minAngularVelocity : the maximum angular velocity for particle rotation
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* \param maxAngularVelocity : the maximum angular velocity for particle rotation
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* \see CPSRotated3dPlaneParticle
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*/
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void hintRotateTheSame(uint32 nbConfiguration,
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float minAngularVelocity = NLMISC::Pi,
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float maxAngularVelocity = NLMISC::Pi
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);
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/** disable the hint 'hintRotateTheSame'
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* The previous set scheme for roation is used
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* \see hintRotateTheSame(), CPSRotated3dPlaneParticle
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*/
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void disableHintRotateTheSame(void)
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{
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hintRotateTheSame(0);
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}
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/** check whether a call to hintRotateTheSame was performed
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* \return 0 if the hint is disabled, the number of configurations else
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* \see hintRotateTheSame(), CPSRotated3dPlaneParticle
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*/
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uint32 checkHintRotateTheSame(float &min, float &max) const
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{
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min = _MinAngularVelocity;
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max = _MaxAngularVelocity;
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return (uint32)_PrecompBasis.size();
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}
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/// serialisation. Derivers must override this, and call their parent version
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virtual void serial(NLMISC::IStream &f) throw(NLMISC::EStream);
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NLMISC_DECLARE_CLASS(CPSConstraintMesh);
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/// return true if there are transparent faces in the object
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virtual bool hasTransparentFaces(void);
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/// return true if there are Opaque faces in the object
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virtual bool hasOpaqueFaces(void);
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/// from CPSParticle : return true if there are lightable faces in the object
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virtual bool hasLightableFaces();
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/// return the max number of faces needed for display. This is needed for LOD balancing
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virtual uint32 getNumWantedTris() const;
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/** Force the n-th stage of all material to be modulated by the mesh color. This allow to put colors on meshs
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* that haven't got material that allow them.
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* \param stage The stage the modulation applies on. Range from 0 to IDRV_MAT_MAXTEXTURES - 1.
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* \param force True enable modulation, false disable it.
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*/
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void forceStageModulationByColor(uint stage, bool force);
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/// Test if the i-th stage of all materials is forced to be modulated with the mesh color
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bool isStageModulationForced(uint stage) const;
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/// force all material to use vertex color lighting
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void forceVertexColorLighting(bool force = true) { _VertexColorLightingForced = force; }
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/// test whether vertex color lighting is forced.
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bool isVertexColorLightingForced() const { return _VertexColorLightingForced; }
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/// Setup the buffers used with prerotated meshs. Must be called during initialization.
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static void initPrerotVB();
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//\name Texture animation
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//@{
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/// The type of animation that is used with meshs textures.
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enum TTexAnimType { NoAnim = 0, GlobalAnim, /*Local, */ Last};
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/// Set the type of texture animation to use. None is the default. Setting a new value discard the previous change.
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void setTexAnimType(TTexAnimType type);
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/// Get the type of texture animation
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TTexAnimType getTexAnimType() const;
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//@}
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//\name Global texture animation. Calls to these method are only valid if texture animation is global.
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//@{
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/// Properties of global texture animation
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struct CGlobalTexAnim
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{
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NLMISC::CVector2f TransOffset; /* = (0, 0) */
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NLMISC::CVector2f TransSpeed; /* = (0, 0) */
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NLMISC::CVector2f TransAccel; /* = (0, 0) */
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NLMISC::CVector2f ScaleStart; /* = (1, 1) */
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NLMISC::CVector2f ScaleSpeed; /* = (0, 0) */
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NLMISC::CVector2f ScaleAccel; /* = (0, 0) */
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float WRotSpeed; /* = 0 */
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float WRotAccel; /* = 0 */
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CGlobalTexAnim();
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void serial(NLMISC::IStream &f) throw(NLMISC::EStream);
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/// Build a texture matrix from a date and this obj.
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void buildMatrix(TAnimationTime date, NLMISC::CMatrix &dest);
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};
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/// Set the properties of texture animation for a texture stage. Global animation should have been activated.
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void setGlobalTexAnim(uint stage, const CGlobalTexAnim &properties);
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/// Get the properties of texture animation.Global animation should have been activated.
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const CGlobalTexAnim &getGlobalTexAnim(uint stage) const;
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/// Force the time counter for global anim to be reseted when a new mesh is created.
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void forceGlobalAnimTimeResetOnNewElement(bool force = true) { _ReinitGlobalAnimTimeOnNewElement = force; }
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bool isGlobalAnimTimeResetOnNewElementForced() const { return _ReinitGlobalAnimTimeOnNewElement != 0; }
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//@}
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/** test if mesh is correctly loaded and built (e.g all shape have been loaded and have compatible format)
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* * NB : this force the meshs to be loaded
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*/
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bool isValidBuild() const;
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/** get number of vertices for each mesh, or an error code if loading failed (see TError enum)
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* NB : this force the meshs to be reloaded
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*/
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void getShapeNumVerts(std::vector<sint> &numVerts);
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// from CPSParticle
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virtual bool supportGlobalColorLighting() const { return false; }
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// from CPSParticle. No-op for meshs
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virtual void setZBias(float value) {}
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virtual float getZBias() const { return 0.f; }
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protected:
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friend class CPSConstraintMeshHelper;
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// inherited from CPSColoredParticle
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virtual CPSLocated *getColorOwner(void) { return _Owner; }
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// inherited from CPSColoredParticle
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virtual void updateMatAndVbForColor(void);
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/** Generate a new element.
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*/
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virtual void newElement(const CPSEmitterInfo &info);
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/** Delete an element by its index
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*/
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virtual void deleteElement(uint32 index);
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virtual void step(TPSProcessPass pass);
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/** called by the system when particles must be drawn
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* \param opaque true if we are dealing with the opaque pass, false for transparent faces
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*/
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void draw(bool opaque);
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/// draw for pre-rotated meshs
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void drawPreRotatedMeshs(bool opaque);
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/// release the shapes used by this particle
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void releaseShapes();
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/** Compute (optional) mesh colors.
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* \param startIndex Index of the mesh being processed
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* \param toProcess Number of meshs to process
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*/
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void computeColors(CVertexBuffer &outVB, const CVertexBuffer &inVB, uint startIndex, uint toProcess, uint32 srcStep, IDriver &drv, CVertexBufferReadWrite &vba, CVertexBufferRead &vbaIn);
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/** Resize the bindable attributes containers. Size is the max number of element to be contained. DERIVERS MUST CALL THEIR PARENT VERSION
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* should not be called directly. Call CPSLocated::resize instead
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*/
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virtual void resize(uint32 size);
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/** Build the mesh data, if the 'touch' flag is set.
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* \param numVerts, if not NULL, the dest vector will be filled with the number of vertices of each mesh (or a TError enumerated value if loading failed)
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* \return true if the mesh could be found and match the requirement
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*/
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bool update(std::vector<sint> *numVerts = NULL);
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/// make a vb for the prerotated mesh from a source vb
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CVertexBuffer &makePrerotatedVb(const CVertexBuffer &inVB);
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/** A rendering pass. The primitive block contains several duplication of the primitives of the original mesh, in order
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* to draw several of them at once
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*/
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class CRdrPass
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{
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public:
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CMaterial Mat;
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CMaterial SourceMat;
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CIndexBuffer PbLine;
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CIndexBuffer PbTri;
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public:
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CRdrPass()
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{
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NL_SET_IB_NAME(PbLine, "CPSMesh::CRdrPass::PbLine");
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NL_SET_IB_NAME(PbLine, "CPSMesh::CRdrPass::PbTri");
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PbTri.setFormat(NL_DEFAULT_INDEX_BUFFER_FORMAT);
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PbLine.setFormat(NL_DEFAULT_INDEX_BUFFER_FORMAT);
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}
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};
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/// A set of rendering pass.
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typedef std::vector<CRdrPass> TRdrPassSet;
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/// a set of rendering pass, and the associated vertex buffer
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class CMeshDisplay
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{
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public:
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TRdrPassSet RdrPasses;
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CVertexBuffer VB;
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public:
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CMeshDisplay()
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{
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VB.setName("CPSConstraintMesh::CMeshDisplay");
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}
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};
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void restoreMaterials();
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/// Setup a set of rendering passes (set good textures matrix / material colors)
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void setupRenderPasses(float date, TRdrPassSet &rdrPasses, bool opaque);
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/// Perform a set of rendering passes. The VB must have been activated in the driver before to call this
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void doRenderPasses(IDriver *driver, uint numObj, TRdrPassSet &rdrPasses, bool opaque);
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typedef NLMISC::CSmartPtr<CMesh> PMesh;
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typedef CPSVector<std::string>::V TMeshNameVect;
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typedef CPSVector<PMesh>::V TMeshVect;
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typedef CPSVector<const CVertexBuffer *>::V TVertexBufferVect;
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// name of the shapes being used by this particle mesh.
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TMeshNameVect _MeshShapeFileName;
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TMeshVect _Meshes;
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TVertexBufferVect _MeshVertexBuffers;
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// caches the number of faces (for load balacing)
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uint _NumFaces;
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// the shape bank containing the shape
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CShapeBank *_ModelBank;
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/** This class manage sharing between several mesh displays.
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* There can be a limited number of them at a given time.
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*/
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class CMeshDisplayShare
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{
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public:
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/// ctor giving the max number of CMeshDisplay structures to be kept simultaneously.
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CMeshDisplayShare(uint maxNumMD) : _MaxNumMD(maxNumMD), _NumMD(0) {}
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// Retrieve a mesh display associated with the given mesh
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CMeshDisplay &getMeshDisplay(CMesh *mesh, const CVertexBuffer &meshVB, uint32 format);
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private:
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struct CMDEntry
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{
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CMesh *Mesh;
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uint32 Format;
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CMeshDisplay MD;
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};
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uint _MaxNumMD;
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uint _NumMD;
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std::list<CMDEntry> _Cache;
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/// build a set of render pass from a mesh
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static void buildRdrPassSet(TRdrPassSet &dest, const CMesh &mesh);
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/// Build a vb from a shape. The format can add an additionnal color
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static void buildVB(CVertexBuffer &dest, const CVertexBuffer &meshVB, uint32 format);
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};
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friend class CMeshDisplayShare;
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/// manage vertex buffers and primitive blocks used for rendering
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static CMeshDisplayShare _MeshDisplayShare;
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/** Map a mesh name to its ram vb
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* If a mesh has been already setupped in the driver for another use than particle system meshes.
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* then locking it will return us an agp or vram pointer, which is baaad because we are reading from it
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* when writing each instance to the final vb.
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* This maps a mesh name, to its ram vb
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* NB / TODO Nico : would greatly benefits from real instancing using SetStreamFreq (this code was originally written in 2001 ...) ...
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* TODO 2 : get rid of all theses statics !!! move then in scene at least (ideally in a render context or something similar, because
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* it may be shared between several scenes)
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*/
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typedef std::map<std::string, CVertexBuffer> TMeshName2RamVB;
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static TMeshName2RamVB _MeshRamVBs;
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/// vertex buffer used with prerotated meshs
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static CVertexBuffer _PreRotatedMeshVB; // mesh has no normals
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static CVertexBuffer _PreRotatedMeshVBWithNormal; // mesh has normals
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// we must store them for serialization
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float _MinAngularVelocity;
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float _MaxAngularVelocity;
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// use for rotation of precomputed meshs
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struct CPlaneBasisPair
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{
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CPlaneBasis Basis;
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CVector Axis; // an axis for rotation
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float AngularVelocity; // an angular velocity
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};
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/// a set of precomp basis, before and after transfomation in world space, used if the hint 'RotateTheSame' has been called
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CPSVector<CPlaneBasisPair>::V _PrecompBasis;
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/// this contain an index in _PrecompBasis for each particle
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CPSVector<uint32>::V _IndexInPrecompBasis;
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/// fill _IndexInPrecompBasis with index in the range [0.. nb configurations[
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void fillIndexesInPrecompBasis(void);
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// release the model shape (dtor, or before loading)
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void clean(void);
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virtual CPSLocated *getSizeOwner(void) { return _Owner; }
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virtual CPSLocated *getPlaneBasisOwner(void) { return _Owner; }
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/** Setup material so that global or per mesh color is taken in account. Useful if material hasn't been setup correctly in the export
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*/
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void setupMaterialColor(CMaterial &destMat, CMaterial &srcMat);
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// Get a mesh vb from its index into the list of vbs.
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const CVertexBuffer &getMeshVB(uint index);
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/// A 'bitfield' to force some stage to be modulated with the primary color
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uint8 _ModulatedStages;
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// A new mesh has been set, so we must reconstruct it when needed
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uint8 _Touched : 1;
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// flags that indicate whether the object has transparent faces. When the 'touch' flag is set, it is undefined, until the next update() call.
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uint8 _HasTransparentFaces : 1;
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// flags that indicate whether the object has opaques faces. When the 'touch' flag is set, it is undefined, until the next update() call.
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uint8 _HasOpaqueFaces : 1;
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uint8 _VertexColorLightingForced : 1;
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uint8 _GlobalAnimationEnabled : 1;
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uint8 _ReinitGlobalAnimTimeOnNewElement : 1;
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uint8 _HasLightableFaces : 1;
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uint8 _ValidBuild : 1;
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/// Infos for global texture animation
|
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struct CGlobalTexAnims
|
|
{
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|
CGlobalTexAnim Anims[IDRV_MAT_MAXTEXTURES];
|
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void serial(NLMISC::IStream &f) throw(NLMISC::EStream);
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};
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typedef std::auto_ptr<CGlobalTexAnims> PGlobalTexAnims;
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PGlobalTexAnims _GlobalTexAnims;
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float _GlobalAnimDate;
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/// \name morphing
|
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//@{
|
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float _MorphValue;
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CPSAttribMaker<float> *_MorphScheme;
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//@}
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private:
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CPSConstraintMesh(const CPSConstraintMesh &) : CPSParticle(), CPSSizedParticle(), CPSRotated3DPlaneParticle(), CPSHintParticleRotateTheSame(), CPSShapeParticle(), CPSColoredParticle() { nlassert(0); /* not supported */ }
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CPSConstraintMesh &operator = (const CPSConstraintMesh &other) { nlassert(0); return *this; /* not supported */ }
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};
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} // NL3D
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#endif // NL_PS_MESH_H
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/* End of ps_mesh.h */
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