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Diffstat (limited to 'extern/bullet2/BulletSoftBody/btSoftBody.h')
| -rw-r--r-- | extern/bullet2/BulletSoftBody/btSoftBody.h | 891 |
1 files changed, 0 insertions, 891 deletions
diff --git a/extern/bullet2/BulletSoftBody/btSoftBody.h b/extern/bullet2/BulletSoftBody/btSoftBody.h deleted file mode 100644 index d69e835f11b..00000000000 --- a/extern/bullet2/BulletSoftBody/btSoftBody.h +++ /dev/null @@ -1,891 +0,0 @@ -/* -Bullet Continuous Collision Detection and Physics Library -Copyright (c) 2003-2006 Erwin Coumans http://continuousphysics.com/Bullet/ - -This software is provided 'as-is', without any express or implied warranty. -In no event will the authors be held liable for any damages arising from the use of this software. -Permission is granted to anyone to use this software for any purpose, -including commercial applications, and to alter it and redistribute it freely, -subject to the following restrictions: - -1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required. -2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software. -3. This notice may not be removed or altered from any source distribution. -*/ -///btSoftBody implementation by Nathanael Presson - -#ifndef _BT_SOFT_BODY_H -#define _BT_SOFT_BODY_H - -#include "LinearMath/btAlignedObjectArray.h" -#include "LinearMath/btTransform.h" -#include "LinearMath/btIDebugDraw.h" -#include "BulletDynamics/Dynamics/btRigidBody.h" - -#include "BulletCollision/CollisionShapes/btConcaveShape.h" -#include "BulletCollision/CollisionDispatch/btCollisionCreateFunc.h" -#include "btSparseSDF.h" -#include "BulletCollision/BroadphaseCollision/btDbvt.h" - -class btBroadphaseInterface; -class btDispatcher; - -/* btSoftBodyWorldInfo */ -struct btSoftBodyWorldInfo -{ - btScalar air_density; - btScalar water_density; - btScalar water_offset; - btVector3 water_normal; - btBroadphaseInterface* m_broadphase; - btDispatcher* m_dispatcher; - btVector3 m_gravity; - btSparseSdf<3> m_sparsesdf; -}; - - -///The btSoftBody is an class to simulate cloth and volumetric soft bodies. -///There is two-way interaction between btSoftBody and btRigidBody/btCollisionObject. -class btSoftBody : public btCollisionObject -{ -public: - btAlignedObjectArray<class btCollisionObject*> m_collisionDisabledObjects; - - // - // Enumerations - // - - ///eAeroModel - struct eAeroModel { enum _ { - V_Point, ///Vertex normals are oriented toward velocity - V_TwoSided, ///Vertex normals are fliped to match velocity - V_OneSided, ///Vertex normals are taken as it is - F_TwoSided, ///Face normals are fliped to match velocity - F_OneSided, ///Face normals are taken as it is - END - };}; - - ///eVSolver : velocities solvers - struct eVSolver { enum _ { - Linear, ///Linear solver - END - };}; - - ///ePSolver : positions solvers - struct ePSolver { enum _ { - Linear, ///Linear solver - Anchors, ///Anchor solver - RContacts, ///Rigid contacts solver - SContacts, ///Soft contacts solver - END - };}; - - ///eSolverPresets - struct eSolverPresets { enum _ { - Positions, - Velocities, - Default = Positions, - END - };}; - - ///eFeature - struct eFeature { enum _ { - None, - Node, - Link, - Face, - END - };}; - - typedef btAlignedObjectArray<eVSolver::_> tVSolverArray; - typedef btAlignedObjectArray<ePSolver::_> tPSolverArray; - - // - // Flags - // - - ///fCollision - struct fCollision { enum _ { - RVSmask = 0x000f, ///Rigid versus soft mask - SDF_RS = 0x0001, ///SDF based rigid vs soft - CL_RS = 0x0002, ///Cluster vs convex rigid vs soft - - SVSmask = 0x0030, ///Rigid versus soft mask - VF_SS = 0x0010, ///Vertex vs face soft vs soft handling - CL_SS = 0x0020, ///Cluster vs cluster soft vs soft handling - CL_SELF = 0x0040, ///Cluster soft body self collision - /* presets */ - Default = SDF_RS, - END - };}; - - ///fMaterial - struct fMaterial { enum _ { - DebugDraw = 0x0001, /// Enable debug draw - /* presets */ - Default = DebugDraw, - END - };}; - - // - // API Types - // - - /* sRayCast */ - struct sRayCast - { - btSoftBody* body; /// soft body - eFeature::_ feature; /// feature type - int index; /// feature index - btScalar fraction; /// time of impact fraction (rayorg+(rayto-rayfrom)*fraction) - }; - - /* ImplicitFn */ - struct ImplicitFn - { - virtual btScalar Eval(const btVector3& x)=0; - }; - - // - // Internal types - // - - typedef btAlignedObjectArray<btScalar> tScalarArray; - typedef btAlignedObjectArray<btVector3> tVector3Array; - - /* sCti is Softbody contact info */ - struct sCti - { - btCollisionObject* m_colObj; /* Rigid body */ - btVector3 m_normal; /* Outward normal */ - btScalar m_offset; /* Offset from origin */ - }; - - /* sMedium */ - struct sMedium - { - btVector3 m_velocity; /* Velocity */ - btScalar m_pressure; /* Pressure */ - btScalar m_density; /* Density */ - }; - - /* Base type */ - struct Element - { - void* m_tag; // User data - Element() : m_tag(0) {} - }; - /* Material */ - struct Material : Element - { - btScalar m_kLST; // Linear stiffness coefficient [0,1] - btScalar m_kAST; // Area/Angular stiffness coefficient [0,1] - btScalar m_kVST; // Volume stiffness coefficient [0,1] - int m_flags; // Flags - }; - - /* Feature */ - struct Feature : Element - { - Material* m_material; // Material - }; - /* Node */ - struct Node : Feature - { - btVector3 m_x; // Position - btVector3 m_q; // Previous step position - btVector3 m_v; // Velocity - btVector3 m_f; // Force accumulator - btVector3 m_n; // Normal - btScalar m_im; // 1/mass - btScalar m_area; // Area - btDbvtNode* m_leaf; // Leaf data - int m_battach:1; // Attached - }; - /* Link */ - struct Link : Feature - { - Node* m_n[2]; // Node pointers - btScalar m_rl; // Rest length - int m_bbending:1; // Bending link - btScalar m_c0; // (ima+imb)*kLST - btScalar m_c1; // rl^2 - btScalar m_c2; // |gradient|^2/c0 - btVector3 m_c3; // gradient - }; - /* Face */ - struct Face : Feature - { - Node* m_n[3]; // Node pointers - btVector3 m_normal; // Normal - btScalar m_ra; // Rest area - btDbvtNode* m_leaf; // Leaf data - }; - /* Tetra */ - struct Tetra : Feature - { - Node* m_n[4]; // Node pointers - btScalar m_rv; // Rest volume - btDbvtNode* m_leaf; // Leaf data - btVector3 m_c0[4]; // gradients - btScalar m_c1; // (4*kVST)/(im0+im1+im2+im3) - btScalar m_c2; // m_c1/sum(|g0..3|^2) - }; - /* RContact */ - struct RContact - { - sCti m_cti; // Contact infos - Node* m_node; // Owner node - btMatrix3x3 m_c0; // Impulse matrix - btVector3 m_c1; // Relative anchor - btScalar m_c2; // ima*dt - btScalar m_c3; // Friction - btScalar m_c4; // Hardness - }; - /* SContact */ - struct SContact - { - Node* m_node; // Node - Face* m_face; // Face - btVector3 m_weights; // Weigths - btVector3 m_normal; // Normal - btScalar m_margin; // Margin - btScalar m_friction; // Friction - btScalar m_cfm[2]; // Constraint force mixing - }; - /* Anchor */ - struct Anchor - { - Node* m_node; // Node pointer - btVector3 m_local; // Anchor position in body space - btRigidBody* m_body; // Body - btMatrix3x3 m_c0; // Impulse matrix - btVector3 m_c1; // Relative anchor - btScalar m_c2; // ima*dt - }; - /* Note */ - struct Note : Element - { - const char* m_text; // Text - btVector3 m_offset; // Offset - int m_rank; // Rank - Node* m_nodes[4]; // Nodes - btScalar m_coords[4]; // Coordinates - }; - /* Pose */ - struct Pose - { - bool m_bvolume; // Is valid - bool m_bframe; // Is frame - btScalar m_volume; // Rest volume - tVector3Array m_pos; // Reference positions - tScalarArray m_wgh; // Weights - btVector3 m_com; // COM - btMatrix3x3 m_rot; // Rotation - btMatrix3x3 m_scl; // Scale - btMatrix3x3 m_aqq; // Base scaling - }; - /* Cluster */ - struct Cluster - { - btAlignedObjectArray<Node*> m_nodes; - tScalarArray m_masses; - tVector3Array m_framerefs; - btTransform m_framexform; - btScalar m_idmass; - btScalar m_imass; - btMatrix3x3 m_locii; - btMatrix3x3 m_invwi; - btVector3 m_com; - btVector3 m_vimpulses[2]; - btVector3 m_dimpulses[2]; - int m_nvimpulses; - int m_ndimpulses; - btVector3 m_lv; - btVector3 m_av; - btDbvtNode* m_leaf; - btScalar m_ndamping; /* Node damping */ - btScalar m_ldamping; /* Linear damping */ - btScalar m_adamping; /* Angular damping */ - btScalar m_matching; - btScalar m_maxSelfCollisionImpulse; - btScalar m_selfCollisionImpulseFactor; - bool m_containsAnchor; - bool m_collide; - int m_clusterIndex; - Cluster() : m_leaf(0),m_ndamping(0),m_ldamping(0),m_adamping(0),m_matching(0) - ,m_maxSelfCollisionImpulse(100.f), - m_selfCollisionImpulseFactor(0.01f), - m_containsAnchor(false) - {} - }; - /* Impulse */ - struct Impulse - { - btVector3 m_velocity; - btVector3 m_drift; - int m_asVelocity:1; - int m_asDrift:1; - Impulse() : m_velocity(0,0,0),m_drift(0,0,0),m_asVelocity(0),m_asDrift(0) {} - Impulse operator -() const - { - Impulse i=*this; - i.m_velocity=-i.m_velocity; - i.m_drift=-i.m_drift; - return(i); - } - Impulse operator*(btScalar x) const - { - Impulse i=*this; - i.m_velocity*=x; - i.m_drift*=x; - return(i); - } - }; - /* Body */ - struct Body - { - Cluster* m_soft; - btRigidBody* m_rigid; - btCollisionObject* m_collisionObject; - - Body() : m_soft(0),m_rigid(0),m_collisionObject(0) {} - Body(Cluster* p) : m_soft(p),m_rigid(0),m_collisionObject(0) {} - Body(btCollisionObject* colObj) : m_soft(0),m_collisionObject(colObj) - { - m_rigid = btRigidBody::upcast(m_collisionObject); - } - - void activate() const - { - if(m_rigid) m_rigid->activate(); - } - const btMatrix3x3& invWorldInertia() const - { - static const btMatrix3x3 iwi(0,0,0,0,0,0,0,0,0); - if(m_rigid) return(m_rigid->getInvInertiaTensorWorld()); - if(m_soft) return(m_soft->m_invwi); - return(iwi); - } - btScalar invMass() const - { - if(m_rigid) return(m_rigid->getInvMass()); - if(m_soft) return(m_soft->m_imass); - return(0); - } - const btTransform& xform() const - { - static const btTransform identity=btTransform::getIdentity(); - if(m_collisionObject) return(m_collisionObject->getInterpolationWorldTransform()); - if(m_soft) return(m_soft->m_framexform); - return(identity); - } - btVector3 linearVelocity() const - { - if(m_rigid) return(m_rigid->getLinearVelocity()); - if(m_soft) return(m_soft->m_lv); - return(btVector3(0,0,0)); - } - btVector3 angularVelocity(const btVector3& rpos) const - { - if(m_rigid) return(btCross(m_rigid->getAngularVelocity(),rpos)); - if(m_soft) return(btCross(m_soft->m_av,rpos)); - return(btVector3(0,0,0)); - } - btVector3 angularVelocity() const - { - if(m_rigid) return(m_rigid->getAngularVelocity()); - if(m_soft) return(m_soft->m_av); - return(btVector3(0,0,0)); - } - btVector3 velocity(const btVector3& rpos) const - { - return(linearVelocity()+angularVelocity(rpos)); - } - void applyVImpulse(const btVector3& impulse,const btVector3& rpos) const - { - if(m_rigid) m_rigid->applyImpulse(impulse,rpos); - if(m_soft) btSoftBody::clusterVImpulse(m_soft,rpos,impulse); - } - void applyDImpulse(const btVector3& impulse,const btVector3& rpos) const - { - if(m_rigid) m_rigid->applyImpulse(impulse,rpos); - if(m_soft) btSoftBody::clusterDImpulse(m_soft,rpos,impulse); - } - void applyImpulse(const Impulse& impulse,const btVector3& rpos) const - { - if(impulse.m_asVelocity) - { -// printf("impulse.m_velocity = %f,%f,%f\n",impulse.m_velocity.getX(),impulse.m_velocity.getY(),impulse.m_velocity.getZ()); - applyVImpulse(impulse.m_velocity,rpos); - } - if(impulse.m_asDrift) - { -// printf("impulse.m_drift = %f,%f,%f\n",impulse.m_drift.getX(),impulse.m_drift.getY(),impulse.m_drift.getZ()); - applyDImpulse(impulse.m_drift,rpos); - } - } - void applyVAImpulse(const btVector3& impulse) const - { - if(m_rigid) m_rigid->applyTorqueImpulse(impulse); - if(m_soft) btSoftBody::clusterVAImpulse(m_soft,impulse); - } - void applyDAImpulse(const btVector3& impulse) const - { - if(m_rigid) m_rigid->applyTorqueImpulse(impulse); - if(m_soft) btSoftBody::clusterDAImpulse(m_soft,impulse); - } - void applyAImpulse(const Impulse& impulse) const - { - if(impulse.m_asVelocity) applyVAImpulse(impulse.m_velocity); - if(impulse.m_asDrift) applyDAImpulse(impulse.m_drift); - } - void applyDCImpulse(const btVector3& impulse) const - { - if(m_rigid) m_rigid->applyCentralImpulse(impulse); - if(m_soft) btSoftBody::clusterDCImpulse(m_soft,impulse); - } - }; - /* Joint */ - struct Joint - { - struct eType { enum _ { - Linear, - Angular, - Contact - };}; - struct Specs - { - Specs() : erp(1),cfm(1),split(1) {} - btScalar erp; - btScalar cfm; - btScalar split; - }; - Body m_bodies[2]; - btVector3 m_refs[2]; - btScalar m_cfm; - btScalar m_erp; - btScalar m_split; - btVector3 m_drift; - btVector3 m_sdrift; - btMatrix3x3 m_massmatrix; - bool m_delete; - virtual ~Joint() {} - Joint() : m_delete(false) {} - virtual void Prepare(btScalar dt,int iterations); - virtual void Solve(btScalar dt,btScalar sor)=0; - virtual void Terminate(btScalar dt)=0; - virtual eType::_ Type() const=0; - }; - /* LJoint */ - struct LJoint : Joint - { - struct Specs : Joint::Specs - { - btVector3 position; - }; - btVector3 m_rpos[2]; - void Prepare(btScalar dt,int iterations); - void Solve(btScalar dt,btScalar sor); - void Terminate(btScalar dt); - eType::_ Type() const { return(eType::Linear); } - }; - /* AJoint */ - struct AJoint : Joint - { - struct IControl - { - virtual void Prepare(AJoint*) {} - virtual btScalar Speed(AJoint*,btScalar current) { return(current); } - static IControl* Default() { static IControl def;return(&def); } - }; - struct Specs : Joint::Specs - { - Specs() : icontrol(IControl::Default()) {} - btVector3 axis; - IControl* icontrol; - }; - btVector3 m_axis[2]; - IControl* m_icontrol; - void Prepare(btScalar dt,int iterations); - void Solve(btScalar dt,btScalar sor); - void Terminate(btScalar dt); - eType::_ Type() const { return(eType::Angular); } - }; - /* CJoint */ - struct CJoint : Joint - { - int m_life; - int m_maxlife; - btVector3 m_rpos[2]; - btVector3 m_normal; - btScalar m_friction; - void Prepare(btScalar dt,int iterations); - void Solve(btScalar dt,btScalar sor); - void Terminate(btScalar dt); - eType::_ Type() const { return(eType::Contact); } - }; - /* Config */ - struct Config - { - eAeroModel::_ aeromodel; // Aerodynamic model (default: V_Point) - btScalar kVCF; // Velocities correction factor (Baumgarte) - btScalar kDP; // Damping coefficient [0,1] - btScalar kDG; // Drag coefficient [0,+inf] - btScalar kLF; // Lift coefficient [0,+inf] - btScalar kPR; // Pressure coefficient [-inf,+inf] - btScalar kVC; // Volume conversation coefficient [0,+inf] - btScalar kDF; // Dynamic friction coefficient [0,1] - btScalar kMT; // Pose matching coefficient [0,1] - btScalar kCHR; // Rigid contacts hardness [0,1] - btScalar kKHR; // Kinetic contacts hardness [0,1] - btScalar kSHR; // Soft contacts hardness [0,1] - btScalar kAHR; // Anchors hardness [0,1] - btScalar kSRHR_CL; // Soft vs rigid hardness [0,1] (cluster only) - btScalar kSKHR_CL; // Soft vs kinetic hardness [0,1] (cluster only) - btScalar kSSHR_CL; // Soft vs soft hardness [0,1] (cluster only) - btScalar kSR_SPLT_CL; // Soft vs rigid impulse split [0,1] (cluster only) - btScalar kSK_SPLT_CL; // Soft vs rigid impulse split [0,1] (cluster only) - btScalar kSS_SPLT_CL; // Soft vs rigid impulse split [0,1] (cluster only) - btScalar maxvolume; // Maximum volume ratio for pose - btScalar timescale; // Time scale - int viterations; // Velocities solver iterations - int piterations; // Positions solver iterations - int diterations; // Drift solver iterations - int citerations; // Cluster solver iterations - int collisions; // Collisions flags - tVSolverArray m_vsequence; // Velocity solvers sequence - tPSolverArray m_psequence; // Position solvers sequence - tPSolverArray m_dsequence; // Drift solvers sequence - }; - /* SolverState */ - struct SolverState - { - btScalar sdt; // dt*timescale - btScalar isdt; // 1/sdt - btScalar velmrg; // velocity margin - btScalar radmrg; // radial margin - btScalar updmrg; // Update margin - }; - /// RayFromToCaster takes a ray from, ray to (instead of direction!) - struct RayFromToCaster : btDbvt::ICollide - { - btVector3 m_rayFrom; - btVector3 m_rayTo; - btVector3 m_rayNormalizedDirection; - btScalar m_mint; - Face* m_face; - int m_tests; - RayFromToCaster(const btVector3& rayFrom,const btVector3& rayTo,btScalar mxt); - void Process(const btDbvtNode* leaf); - - static inline btScalar rayFromToTriangle(const btVector3& rayFrom, - const btVector3& rayTo, - const btVector3& rayNormalizedDirection, - const btVector3& a, - const btVector3& b, - const btVector3& c, - btScalar maxt=SIMD_INFINITY); - }; - - // - // Typedef's - // - - typedef void (*psolver_t)(btSoftBody*,btScalar,btScalar); - typedef void (*vsolver_t)(btSoftBody*,btScalar); - typedef btAlignedObjectArray<Cluster*> tClusterArray; - typedef btAlignedObjectArray<Note> tNoteArray; - typedef btAlignedObjectArray<Node> tNodeArray; - typedef btAlignedObjectArray<btDbvtNode*> tLeafArray; - typedef btAlignedObjectArray<Link> tLinkArray; - typedef btAlignedObjectArray<Face> tFaceArray; - typedef btAlignedObjectArray<Tetra> tTetraArray; - typedef btAlignedObjectArray<Anchor> tAnchorArray; - typedef btAlignedObjectArray<RContact> tRContactArray; - typedef btAlignedObjectArray<SContact> tSContactArray; - typedef btAlignedObjectArray<Material*> tMaterialArray; - typedef btAlignedObjectArray<Joint*> tJointArray; - typedef btAlignedObjectArray<btSoftBody*> tSoftBodyArray; - - // - // Fields - // - - Config m_cfg; // Configuration - SolverState m_sst; // Solver state - Pose m_pose; // Pose - void* m_tag; // User data - btSoftBodyWorldInfo* m_worldInfo; // World info - tNoteArray m_notes; // Notes - tNodeArray m_nodes; // Nodes - tLinkArray m_links; // Links - tFaceArray m_faces; // Faces - tTetraArray m_tetras; // Tetras - tAnchorArray m_anchors; // Anchors - tRContactArray m_rcontacts; // Rigid contacts - tSContactArray m_scontacts; // Soft contacts - tJointArray m_joints; // Joints - tMaterialArray m_materials; // Materials - btScalar m_timeacc; // Time accumulator - btVector3 m_bounds[2]; // Spatial bounds - bool m_bUpdateRtCst; // Update runtime constants - btDbvt m_ndbvt; // Nodes tree - btDbvt m_fdbvt; // Faces tree - btDbvt m_cdbvt; // Clusters tree - tClusterArray m_clusters; // Clusters - - btAlignedObjectArray<bool>m_clusterConnectivity;//cluster connectivity, for self-collision - - btTransform m_initialWorldTransform; - - // - // Api - // - - /* ctor */ - btSoftBody( btSoftBodyWorldInfo* worldInfo,int node_count, - const btVector3* x, - const btScalar* m); - /* dtor */ - virtual ~btSoftBody(); - /* Check for existing link */ - - btAlignedObjectArray<int> m_userIndexMapping; - - btSoftBodyWorldInfo* getWorldInfo() - { - return m_worldInfo; - } - - ///@todo: avoid internal softbody shape hack and move collision code to collision library - virtual void setCollisionShape(btCollisionShape* collisionShape) - { - - } - - bool checkLink( int node0, - int node1) const; - bool checkLink( const Node* node0, - const Node* node1) const; - /* Check for existring face */ - bool checkFace( int node0, - int node1, - int node2) const; - /* Append material */ - Material* appendMaterial(); - /* Append note */ - void appendNote( const char* text, - const btVector3& o, - const btVector4& c=btVector4(1,0,0,0), - Node* n0=0, - Node* n1=0, - Node* n2=0, - Node* n3=0); - void appendNote( const char* text, - const btVector3& o, - Node* feature); - void appendNote( const char* text, - const btVector3& o, - Link* feature); - void appendNote( const char* text, - const btVector3& o, - Face* feature); - /* Append node */ - void appendNode( const btVector3& x,btScalar m); - /* Append link */ - void appendLink(int model=-1,Material* mat=0); - void appendLink( int node0, - int node1, - Material* mat=0, - bool bcheckexist=false); - void appendLink( Node* node0, - Node* node1, - Material* mat=0, - bool bcheckexist=false); - /* Append face */ - void appendFace(int model=-1,Material* mat=0); - void appendFace( int node0, - int node1, - int node2, - Material* mat=0); - void appendTetra(int model,Material* mat); - // - void appendTetra(int node0, - int node1, - int node2, - int node3, - Material* mat=0); - - - /* Append anchor */ - void appendAnchor( int node, - btRigidBody* body, bool disableCollisionBetweenLinkedBodies=false); - /* Append linear joint */ - void appendLinearJoint(const LJoint::Specs& specs,Cluster* body0,Body body1); - void appendLinearJoint(const LJoint::Specs& specs,Body body=Body()); - void appendLinearJoint(const LJoint::Specs& specs,btSoftBody* body); - /* Append linear joint */ - void appendAngularJoint(const AJoint::Specs& specs,Cluster* body0,Body body1); - void appendAngularJoint(const AJoint::Specs& specs,Body body=Body()); - void appendAngularJoint(const AJoint::Specs& specs,btSoftBody* body); - /* Add force (or gravity) to the entire body */ - void addForce( const btVector3& force); - /* Add force (or gravity) to a node of the body */ - void addForce( const btVector3& force, - int node); - /* Add velocity to the entire body */ - void addVelocity( const btVector3& velocity); - - /* Set velocity for the entire body */ - void setVelocity( const btVector3& velocity); - - /* Add velocity to a node of the body */ - void addVelocity( const btVector3& velocity, - int node); - /* Set mass */ - void setMass( int node, - btScalar mass); - /* Get mass */ - btScalar getMass( int node) const; - /* Get total mass */ - btScalar getTotalMass() const; - /* Set total mass (weighted by previous masses) */ - void setTotalMass( btScalar mass, - bool fromfaces=false); - /* Set total density */ - void setTotalDensity(btScalar density); - /* Set volume mass (using tetrahedrons) */ - void setVolumeMass( btScalar mass); - /* Set volume density (using tetrahedrons) */ - void setVolumeDensity( btScalar density); - /* Transform */ - void transform( const btTransform& trs); - /* Translate */ - void translate( const btVector3& trs); - /* Rotate */ - void rotate( const btQuaternion& rot); - /* Scale */ - void scale( const btVector3& scl); - /* Set current state as pose */ - void setPose( bool bvolume, - bool bframe); - /* Return the volume */ - btScalar getVolume() const; - /* Cluster count */ - int clusterCount() const; - /* Cluster center of mass */ - static btVector3 clusterCom(const Cluster* cluster); - btVector3 clusterCom(int cluster) const; - /* Cluster velocity at rpos */ - static btVector3 clusterVelocity(const Cluster* cluster,const btVector3& rpos); - /* Cluster impulse */ - static void clusterVImpulse(Cluster* cluster,const btVector3& rpos,const btVector3& impulse); - static void clusterDImpulse(Cluster* cluster,const btVector3& rpos,const btVector3& impulse); - static void clusterImpulse(Cluster* cluster,const btVector3& rpos,const Impulse& impulse); - static void clusterVAImpulse(Cluster* cluster,const btVector3& impulse); - static void clusterDAImpulse(Cluster* cluster,const btVector3& impulse); - static void clusterAImpulse(Cluster* cluster,const Impulse& impulse); - static void clusterDCImpulse(Cluster* cluster,const btVector3& impulse); - /* Generate bending constraints based on distance in the adjency graph */ - int generateBendingConstraints( int distance, - Material* mat=0); - /* Randomize constraints to reduce solver bias */ - void randomizeConstraints(); - /* Release clusters */ - void releaseCluster(int index); - void releaseClusters(); - /* Generate clusters (K-mean) */ - ///generateClusters with k=0 will create a convex cluster for each tetrahedron or triangle - ///otherwise an approximation will be used (better performance) - int generateClusters(int k,int maxiterations=8192); - /* Refine */ - void refine(ImplicitFn* ifn,btScalar accurary,bool cut); - /* CutLink */ - bool cutLink(int node0,int node1,btScalar position); - bool cutLink(const Node* node0,const Node* node1,btScalar position); - - ///Ray casting using rayFrom and rayTo in worldspace, (not direction!) - bool rayTest(const btVector3& rayFrom, - const btVector3& rayTo, - sRayCast& results); - /* Solver presets */ - void setSolver(eSolverPresets::_ preset); - /* predictMotion */ - void predictMotion(btScalar dt); - /* solveConstraints */ - void solveConstraints(); - /* staticSolve */ - void staticSolve(int iterations); - /* solveCommonConstraints */ - static void solveCommonConstraints(btSoftBody** bodies,int count,int iterations); - /* solveClusters */ - static void solveClusters(const btAlignedObjectArray<btSoftBody*>& bodies); - /* integrateMotion */ - void integrateMotion(); - /* defaultCollisionHandlers */ - void defaultCollisionHandler(btCollisionObject* pco); - void defaultCollisionHandler(btSoftBody* psb); - - // - // Cast - // - - static const btSoftBody* upcast(const btCollisionObject* colObj) - { - if (colObj->getInternalType()==CO_SOFT_BODY) - return (const btSoftBody*)colObj; - return 0; - } - static btSoftBody* upcast(btCollisionObject* colObj) - { - if (colObj->getInternalType()==CO_SOFT_BODY) - return (btSoftBody*)colObj; - return 0; - } - - // - // ::btCollisionObject - // - - virtual void getAabb(btVector3& aabbMin,btVector3& aabbMax) const - { - aabbMin = m_bounds[0]; - aabbMax = m_bounds[1]; - } - // - // Private - // - void pointersToIndices(); - void indicesToPointers(const int* map=0); - - int rayTest(const btVector3& rayFrom,const btVector3& rayTo, - btScalar& mint,eFeature::_& feature,int& index,bool bcountonly) const; - void initializeFaceTree(); - btVector3 evaluateCom() const; - bool checkContact(btCollisionObject* colObj,const btVector3& x,btScalar margin,btSoftBody::sCti& cti) const; - void updateNormals(); - void updateBounds(); - void updatePose(); - void updateConstants(); - void initializeClusters(); - void updateClusters(); - void cleanupClusters(); - void prepareClusters(int iterations); - void solveClusters(btScalar sor); - void applyClusters(bool drift); - void dampClusters(); - void applyForces(); - static void PSolve_Anchors(btSoftBody* psb,btScalar kst,btScalar ti); - static void PSolve_RContacts(btSoftBody* psb,btScalar kst,btScalar ti); - static void PSolve_SContacts(btSoftBody* psb,btScalar,btScalar ti); - static void PSolve_Links(btSoftBody* psb,btScalar kst,btScalar ti); - static void VSolve_Links(btSoftBody* psb,btScalar kst); - static psolver_t getSolver(ePSolver::_ solver); - static vsolver_t getSolver(eVSolver::_ solver); - -}; - - - -#endif //_BT_SOFT_BODY_H |