1165 lines
27 KiB
C++
1165 lines
27 KiB
C++
/*! \file btGImpactShape.h
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\author Francisco Len Nßjera
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*/
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/*
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This source file is part of GIMPACT Library.
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For the latest info, see http://gimpact.sourceforge.net/
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Copyright (c) 2007 Francisco Leon Najera. C.C. 80087371.
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email: projectileman@yahoo.com
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This software is provided 'as-is', without any express or implied warranty.
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In no event will the authors be held liable for any damages arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it freely,
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subject to the following restrictions:
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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.
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2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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#ifndef GIMPACT_SHAPE_H
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#define GIMPACT_SHAPE_H
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#include "BulletCollision/CollisionShapes/btCollisionShape.h"
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#include "BulletCollision/CollisionShapes/btTriangleShape.h"
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#include "BulletCollision/CollisionShapes/btStridingMeshInterface.h"
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#include "BulletCollision/CollisionShapes/btCollisionMargin.h"
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#include "BulletCollision/CollisionDispatch/btCollisionWorld.h"
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#include "BulletCollision/CollisionShapes/btConcaveShape.h"
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#include "BulletCollision/CollisionShapes/btTetrahedronShape.h"
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#include "LinearMath/btVector3.h"
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#include "LinearMath/btTransform.h"
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#include "LinearMath/btMatrix3x3.h"
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#include "LinearMath/btAlignedObjectArray.h"
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#include "btGImpactQuantizedBvh.h" // box tree class
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//! declare Quantized trees, (you can change to float based trees)
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typedef btGImpactQuantizedBvh btGImpactBoxSet;
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enum eGIMPACT_SHAPE_TYPE
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{
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CONST_GIMPACT_COMPOUND_SHAPE = 0,
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CONST_GIMPACT_TRIMESH_SHAPE_PART,
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CONST_GIMPACT_TRIMESH_SHAPE
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};
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//! Helper class for tetrahedrons
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class btTetrahedronShapeEx:public btBU_Simplex1to4
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{
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public:
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btTetrahedronShapeEx()
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{
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m_numVertices = 4;
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}
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SIMD_FORCE_INLINE void setVertices(
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const btVector3 & v0,const btVector3 & v1,
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const btVector3 & v2,const btVector3 & v3)
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{
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m_vertices[0] = v0;
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m_vertices[1] = v1;
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m_vertices[2] = v2;
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m_vertices[3] = v3;
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recalcLocalAabb();
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}
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};
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//! Base class for gimpact shapes
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class btGImpactShapeInterface : public btConcaveShape
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{
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protected:
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btAABB m_localAABB;
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bool m_needs_update;
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btVector3 localScaling;
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btGImpactBoxSet m_box_set;// optionally boxset
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//! use this function for perfofm refit in bounding boxes
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//! use this function for perfofm refit in bounding boxes
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virtual void calcLocalAABB()
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{
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lockChildShapes();
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if(m_box_set.getNodeCount() == 0)
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{
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m_box_set.buildSet();
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}
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else
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{
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m_box_set.update();
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}
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unlockChildShapes();
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m_localAABB = m_box_set.getGlobalBox();
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}
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public:
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btGImpactShapeInterface()
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{
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m_shapeType=GIMPACT_SHAPE_PROXYTYPE;
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m_localAABB.invalidate();
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m_needs_update = true;
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localScaling.setValue(1.f,1.f,1.f);
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}
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//! performs refit operation
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/*!
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Updates the entire Box set of this shape.
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\pre postUpdate() must be called for attemps to calculating the box set, else this function
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will does nothing.
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\post if m_needs_update == true, then it calls calcLocalAABB();
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*/
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SIMD_FORCE_INLINE void updateBound()
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{
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if(!m_needs_update) return;
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calcLocalAABB();
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m_needs_update = false;
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}
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//! If the Bounding box is not updated, then this class attemps to calculate it.
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/*!
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\post Calls updateBound() for update the box set.
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*/
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void getAabb(const btTransform& t,btVector3& aabbMin,btVector3& aabbMax) const
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{
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btAABB transformedbox = m_localAABB;
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transformedbox.appy_transform(t);
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aabbMin = transformedbox.m_min;
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aabbMax = transformedbox.m_max;
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}
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//! Tells to this object that is needed to refit the box set
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virtual void postUpdate()
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{
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m_needs_update = true;
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}
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//! Obtains the local box, which is the global calculated box of the total of subshapes
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SIMD_FORCE_INLINE const btAABB & getLocalBox()
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{
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return m_localAABB;
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}
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virtual int getShapeType() const
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{
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return GIMPACT_SHAPE_PROXYTYPE;
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}
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/*!
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\post You must call updateBound() for update the box set.
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*/
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virtual void setLocalScaling(const btVector3& scaling)
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{
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localScaling = scaling;
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postUpdate();
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}
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virtual const btVector3& getLocalScaling() const
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{
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return localScaling;
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}
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virtual void setMargin(btScalar margin)
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{
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m_collisionMargin = margin;
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int i = getNumChildShapes();
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while(i--)
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{
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btCollisionShape* child = getChildShape(i);
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child->setMargin(margin);
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}
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m_needs_update = true;
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}
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//! Subshape member functions
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//!@{
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//! Base method for determinig which kind of GIMPACT shape we get
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virtual eGIMPACT_SHAPE_TYPE getGImpactShapeType() const = 0 ;
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//! gets boxset
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SIMD_FORCE_INLINE const btGImpactBoxSet * getBoxSet() const
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{
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return &m_box_set;
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}
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//! Determines if this class has a hierarchy structure for sorting its primitives
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SIMD_FORCE_INLINE bool hasBoxSet() const
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{
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if(m_box_set.getNodeCount() == 0) return false;
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return true;
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}
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//! Obtains the primitive manager
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virtual const btPrimitiveManagerBase * getPrimitiveManager() const = 0;
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//! Gets the number of children
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virtual int getNumChildShapes() const = 0;
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//! if true, then its children must get transforms.
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virtual bool childrenHasTransform() const = 0;
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//! Determines if this shape has triangles
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virtual bool needsRetrieveTriangles() const = 0;
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//! Determines if this shape has tetrahedrons
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virtual bool needsRetrieveTetrahedrons() const = 0;
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virtual void getBulletTriangle(int prim_index,btTriangleShapeEx & triangle) const = 0;
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virtual void getBulletTetrahedron(int prim_index,btTetrahedronShapeEx & tetrahedron) const = 0;
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//! call when reading child shapes
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virtual void lockChildShapes() const
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{
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}
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virtual void unlockChildShapes() const
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{
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}
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//! if this trimesh
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SIMD_FORCE_INLINE void getPrimitiveTriangle(int index,btPrimitiveTriangle & triangle) const
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{
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getPrimitiveManager()->get_primitive_triangle(index,triangle);
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}
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//! Retrieves the bound from a child
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/*!
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*/
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virtual void getChildAabb(int child_index,const btTransform& t,btVector3& aabbMin,btVector3& aabbMax) const
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{
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btAABB child_aabb;
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getPrimitiveManager()->get_primitive_box(child_index,child_aabb);
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child_aabb.appy_transform(t);
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aabbMin = child_aabb.m_min;
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aabbMax = child_aabb.m_max;
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}
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//! Gets the children
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virtual btCollisionShape* getChildShape(int index) = 0;
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//! Gets the child
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virtual const btCollisionShape* getChildShape(int index) const = 0;
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//! Gets the children transform
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virtual btTransform getChildTransform(int index) const = 0;
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//! Sets the children transform
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/*!
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\post You must call updateBound() for update the box set.
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*/
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virtual void setChildTransform(int index, const btTransform & transform) = 0;
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//!@}
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//! virtual method for ray collision
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virtual void rayTest(const btVector3& rayFrom, const btVector3& rayTo, btCollisionWorld::RayResultCallback& resultCallback) const
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{
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(void) rayFrom; (void) rayTo; (void) resultCallback;
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}
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//! Function for retrieve triangles.
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/*!
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It gives the triangles in local space
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*/
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virtual void processAllTriangles(btTriangleCallback* callback,const btVector3& aabbMin,const btVector3& aabbMax) const
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{
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(void) callback; (void) aabbMin; (void) aabbMax;
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}
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//! Function for retrieve triangles.
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/*!
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It gives the triangles in local space
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*/
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virtual void processAllTrianglesRay(btTriangleCallback* /*callback*/,const btVector3& /*rayFrom*/, const btVector3& /*rayTo*/) const
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{
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}
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//!@}
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};
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//! btGImpactCompoundShape allows to handle multiple btCollisionShape objects at once
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/*!
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This class only can manage Convex subshapes
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*/
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class btGImpactCompoundShape : public btGImpactShapeInterface
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{
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public:
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//! compound primitive manager
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class CompoundPrimitiveManager:public btPrimitiveManagerBase
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{
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public:
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virtual ~CompoundPrimitiveManager() {}
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btGImpactCompoundShape * m_compoundShape;
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CompoundPrimitiveManager(const CompoundPrimitiveManager& compound)
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: btPrimitiveManagerBase()
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{
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m_compoundShape = compound.m_compoundShape;
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}
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CompoundPrimitiveManager(btGImpactCompoundShape * compoundShape)
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{
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m_compoundShape = compoundShape;
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}
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CompoundPrimitiveManager()
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{
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m_compoundShape = NULL;
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}
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virtual bool is_trimesh() const
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{
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return false;
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}
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virtual int get_primitive_count() const
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{
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return (int )m_compoundShape->getNumChildShapes();
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}
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virtual void get_primitive_box(int prim_index ,btAABB & primbox) const
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{
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btTransform prim_trans;
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if(m_compoundShape->childrenHasTransform())
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{
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prim_trans = m_compoundShape->getChildTransform(prim_index);
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}
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else
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{
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prim_trans.setIdentity();
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}
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const btCollisionShape* shape = m_compoundShape->getChildShape(prim_index);
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shape->getAabb(prim_trans,primbox.m_min,primbox.m_max);
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}
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virtual void get_primitive_triangle(int prim_index,btPrimitiveTriangle & triangle) const
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{
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btAssert(0);
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(void) prim_index; (void) triangle;
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}
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};
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protected:
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CompoundPrimitiveManager m_primitive_manager;
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btAlignedObjectArray<btTransform> m_childTransforms;
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btAlignedObjectArray<btCollisionShape*> m_childShapes;
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public:
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btGImpactCompoundShape(bool children_has_transform = true)
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{
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(void) children_has_transform;
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m_primitive_manager.m_compoundShape = this;
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m_box_set.setPrimitiveManager(&m_primitive_manager);
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}
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virtual ~btGImpactCompoundShape()
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{
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}
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//! if true, then its children must get transforms.
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virtual bool childrenHasTransform() const
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{
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if(m_childTransforms.size()==0) return false;
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return true;
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}
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//! Obtains the primitive manager
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virtual const btPrimitiveManagerBase * getPrimitiveManager() const
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{
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return &m_primitive_manager;
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}
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//! Obtains the compopund primitive manager
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SIMD_FORCE_INLINE CompoundPrimitiveManager * getCompoundPrimitiveManager()
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{
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return &m_primitive_manager;
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}
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//! Gets the number of children
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virtual int getNumChildShapes() const
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{
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return m_childShapes.size();
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}
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//! Use this method for adding children. Only Convex shapes are allowed.
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void addChildShape(const btTransform& localTransform,btCollisionShape* shape)
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{
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btAssert(shape->isConvex());
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m_childTransforms.push_back(localTransform);
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m_childShapes.push_back(shape);
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}
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//! Use this method for adding children. Only Convex shapes are allowed.
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void addChildShape(btCollisionShape* shape)
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{
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btAssert(shape->isConvex());
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m_childShapes.push_back(shape);
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}
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//! Gets the children
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virtual btCollisionShape* getChildShape(int index)
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{
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return m_childShapes[index];
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}
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//! Gets the children
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virtual const btCollisionShape* getChildShape(int index) const
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{
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return m_childShapes[index];
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}
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//! Retrieves the bound from a child
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/*!
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*/
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virtual void getChildAabb(int child_index,const btTransform& t,btVector3& aabbMin,btVector3& aabbMax) const
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{
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if(childrenHasTransform())
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{
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m_childShapes[child_index]->getAabb(t*m_childTransforms[child_index],aabbMin,aabbMax);
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}
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else
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{
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m_childShapes[child_index]->getAabb(t,aabbMin,aabbMax);
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}
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}
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//! Gets the children transform
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virtual btTransform getChildTransform(int index) const
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{
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btAssert(m_childTransforms.size() == m_childShapes.size());
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return m_childTransforms[index];
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}
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//! Sets the children transform
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/*!
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\post You must call updateBound() for update the box set.
|
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*/
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virtual void setChildTransform(int index, const btTransform & transform)
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{
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btAssert(m_childTransforms.size() == m_childShapes.size());
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m_childTransforms[index] = transform;
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postUpdate();
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}
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//! Determines if this shape has triangles
|
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virtual bool needsRetrieveTriangles() const
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{
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return false;
|
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}
|
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|
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//! Determines if this shape has tetrahedrons
|
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virtual bool needsRetrieveTetrahedrons() const
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{
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return false;
|
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}
|
||
|
||
|
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virtual void getBulletTriangle(int prim_index,btTriangleShapeEx & triangle) const
|
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{
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(void) prim_index; (void) triangle;
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btAssert(0);
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}
|
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|
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virtual void getBulletTetrahedron(int prim_index,btTetrahedronShapeEx & tetrahedron) const
|
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{
|
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(void) prim_index; (void) tetrahedron;
|
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btAssert(0);
|
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}
|
||
|
||
|
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//! Calculates the exact inertia tensor for this shape
|
||
virtual void calculateLocalInertia(btScalar mass,btVector3& inertia) const;
|
||
|
||
virtual const char* getName()const
|
||
{
|
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return "GImpactCompound";
|
||
}
|
||
|
||
virtual eGIMPACT_SHAPE_TYPE getGImpactShapeType() const
|
||
{
|
||
return CONST_GIMPACT_COMPOUND_SHAPE;
|
||
}
|
||
|
||
};
|
||
|
||
|
||
|
||
//! This class manages a sub part of a mesh supplied by the btStridingMeshInterface interface.
|
||
/*!
|
||
- Simply create this shape by passing the btStridingMeshInterface to the constructor btGImpactMeshShapePart, then you must call updateBound() after creating the mesh
|
||
- When making operations with this shape, you must call <b>lock</b> before accessing to the trimesh primitives, and then call <b>unlock</b>
|
||
- You can handle deformable meshes with this shape, by calling postUpdate() every time when changing the mesh vertices.
|
||
|
||
*/
|
||
class btGImpactMeshShapePart : public btGImpactShapeInterface
|
||
{
|
||
public:
|
||
//! Trimesh primitive manager
|
||
/*!
|
||
Manages the info from btStridingMeshInterface object and controls the Lock/Unlock mechanism
|
||
*/
|
||
class TrimeshPrimitiveManager:public btPrimitiveManagerBase
|
||
{
|
||
public:
|
||
btScalar m_margin;
|
||
btStridingMeshInterface * m_meshInterface;
|
||
btVector3 m_scale;
|
||
int m_part;
|
||
int m_lock_count;
|
||
const unsigned char *vertexbase;
|
||
int numverts;
|
||
PHY_ScalarType type;
|
||
int stride;
|
||
const unsigned char *indexbase;
|
||
int indexstride;
|
||
int numfaces;
|
||
PHY_ScalarType indicestype;
|
||
|
||
TrimeshPrimitiveManager()
|
||
{
|
||
m_meshInterface = NULL;
|
||
m_part = 0;
|
||
m_margin = 0.01f;
|
||
m_scale = btVector3(1.f,1.f,1.f);
|
||
m_lock_count = 0;
|
||
vertexbase = 0;
|
||
numverts = 0;
|
||
stride = 0;
|
||
indexbase = 0;
|
||
indexstride = 0;
|
||
numfaces = 0;
|
||
}
|
||
|
||
TrimeshPrimitiveManager(const TrimeshPrimitiveManager & manager)
|
||
: btPrimitiveManagerBase()
|
||
{
|
||
m_meshInterface = manager.m_meshInterface;
|
||
m_part = manager.m_part;
|
||
m_margin = manager.m_margin;
|
||
m_scale = manager.m_scale;
|
||
m_lock_count = 0;
|
||
vertexbase = 0;
|
||
numverts = 0;
|
||
stride = 0;
|
||
indexbase = 0;
|
||
indexstride = 0;
|
||
numfaces = 0;
|
||
|
||
}
|
||
|
||
TrimeshPrimitiveManager(
|
||
btStridingMeshInterface * meshInterface, int part)
|
||
{
|
||
m_meshInterface = meshInterface;
|
||
m_part = part;
|
||
m_scale = m_meshInterface->getScaling();
|
||
m_margin = 0.1f;
|
||
m_lock_count = 0;
|
||
vertexbase = 0;
|
||
numverts = 0;
|
||
stride = 0;
|
||
indexbase = 0;
|
||
indexstride = 0;
|
||
numfaces = 0;
|
||
|
||
}
|
||
|
||
virtual ~TrimeshPrimitiveManager() {}
|
||
|
||
void lock()
|
||
{
|
||
if(m_lock_count>0)
|
||
{
|
||
m_lock_count++;
|
||
return;
|
||
}
|
||
m_meshInterface->getLockedReadOnlyVertexIndexBase(
|
||
&vertexbase,numverts,
|
||
type, stride,&indexbase, indexstride, numfaces,indicestype,m_part);
|
||
|
||
m_lock_count = 1;
|
||
}
|
||
|
||
void unlock()
|
||
{
|
||
if(m_lock_count == 0) return;
|
||
if(m_lock_count>1)
|
||
{
|
||
--m_lock_count;
|
||
return;
|
||
}
|
||
m_meshInterface->unLockReadOnlyVertexBase(m_part);
|
||
vertexbase = NULL;
|
||
m_lock_count = 0;
|
||
}
|
||
|
||
virtual bool is_trimesh() const
|
||
{
|
||
return true;
|
||
}
|
||
|
||
virtual int get_primitive_count() const
|
||
{
|
||
return (int )numfaces;
|
||
}
|
||
|
||
SIMD_FORCE_INLINE int get_vertex_count() const
|
||
{
|
||
return (int )numverts;
|
||
}
|
||
|
||
SIMD_FORCE_INLINE void get_indices(int face_index,unsigned int &i0,unsigned int &i1,unsigned int &i2) const
|
||
{
|
||
if(indicestype == PHY_SHORT)
|
||
{
|
||
unsigned short* s_indices = (unsigned short *)(indexbase + face_index * indexstride);
|
||
i0 = s_indices[0];
|
||
i1 = s_indices[1];
|
||
i2 = s_indices[2];
|
||
}
|
||
else
|
||
{
|
||
unsigned int * i_indices = (unsigned int *)(indexbase + face_index*indexstride);
|
||
i0 = i_indices[0];
|
||
i1 = i_indices[1];
|
||
i2 = i_indices[2];
|
||
}
|
||
}
|
||
|
||
SIMD_FORCE_INLINE void get_vertex(unsigned int vertex_index, btVector3 & vertex) const
|
||
{
|
||
if(type == PHY_DOUBLE)
|
||
{
|
||
double * dvertices = (double *)(vertexbase + vertex_index*stride);
|
||
vertex[0] = btScalar(dvertices[0]*m_scale[0]);
|
||
vertex[1] = btScalar(dvertices[1]*m_scale[1]);
|
||
vertex[2] = btScalar(dvertices[2]*m_scale[2]);
|
||
}
|
||
else
|
||
{
|
||
float * svertices = (float *)(vertexbase + vertex_index*stride);
|
||
vertex[0] = svertices[0]*m_scale[0];
|
||
vertex[1] = svertices[1]*m_scale[1];
|
||
vertex[2] = svertices[2]*m_scale[2];
|
||
}
|
||
}
|
||
|
||
virtual void get_primitive_box(int prim_index ,btAABB & primbox) const
|
||
{
|
||
btPrimitiveTriangle triangle;
|
||
get_primitive_triangle(prim_index,triangle);
|
||
primbox.calc_from_triangle_margin(
|
||
triangle.m_vertices[0],
|
||
triangle.m_vertices[1],triangle.m_vertices[2],triangle.m_margin);
|
||
}
|
||
|
||
virtual void get_primitive_triangle(int prim_index,btPrimitiveTriangle & triangle) const
|
||
{
|
||
unsigned int indices[3];
|
||
get_indices(prim_index,indices[0],indices[1],indices[2]);
|
||
get_vertex(indices[0],triangle.m_vertices[0]);
|
||
get_vertex(indices[1],triangle.m_vertices[1]);
|
||
get_vertex(indices[2],triangle.m_vertices[2]);
|
||
triangle.m_margin = m_margin;
|
||
}
|
||
|
||
SIMD_FORCE_INLINE void get_bullet_triangle(int prim_index,btTriangleShapeEx & triangle) const
|
||
{
|
||
unsigned int indices[3];
|
||
get_indices(prim_index,indices[0],indices[1],indices[2]);
|
||
get_vertex(indices[0],triangle.m_vertices1[0]);
|
||
get_vertex(indices[1],triangle.m_vertices1[1]);
|
||
get_vertex(indices[2],triangle.m_vertices1[2]);
|
||
triangle.setMargin(m_margin);
|
||
}
|
||
|
||
};
|
||
|
||
|
||
protected:
|
||
TrimeshPrimitiveManager m_primitive_manager;
|
||
public:
|
||
|
||
btGImpactMeshShapePart()
|
||
{
|
||
m_box_set.setPrimitiveManager(&m_primitive_manager);
|
||
}
|
||
|
||
btGImpactMeshShapePart( btStridingMeshInterface * meshInterface, int part );
|
||
virtual ~btGImpactMeshShapePart();
|
||
|
||
//! if true, then its children must get transforms.
|
||
virtual bool childrenHasTransform() const
|
||
{
|
||
return false;
|
||
}
|
||
|
||
|
||
//! call when reading child shapes
|
||
virtual void lockChildShapes() const;
|
||
virtual void unlockChildShapes() const;
|
||
|
||
//! Gets the number of children
|
||
virtual int getNumChildShapes() const
|
||
{
|
||
return m_primitive_manager.get_primitive_count();
|
||
}
|
||
|
||
|
||
//! Gets the children
|
||
virtual btCollisionShape* getChildShape(int index)
|
||
{
|
||
(void) index;
|
||
btAssert(0);
|
||
return NULL;
|
||
}
|
||
|
||
|
||
|
||
//! Gets the child
|
||
virtual const btCollisionShape* getChildShape(int index) const
|
||
{
|
||
(void) index;
|
||
btAssert(0);
|
||
return NULL;
|
||
}
|
||
|
||
//! Gets the children transform
|
||
virtual btTransform getChildTransform(int index) const
|
||
{
|
||
(void) index;
|
||
btAssert(0);
|
||
return btTransform();
|
||
}
|
||
|
||
//! Sets the children transform
|
||
/*!
|
||
\post You must call updateBound() for update the box set.
|
||
*/
|
||
virtual void setChildTransform(int index, const btTransform & transform)
|
||
{
|
||
(void) index;
|
||
(void) transform;
|
||
btAssert(0);
|
||
}
|
||
|
||
|
||
//! Obtains the primitive manager
|
||
virtual const btPrimitiveManagerBase * getPrimitiveManager() const
|
||
{
|
||
return &m_primitive_manager;
|
||
}
|
||
|
||
SIMD_FORCE_INLINE TrimeshPrimitiveManager * getTrimeshPrimitiveManager()
|
||
{
|
||
return &m_primitive_manager;
|
||
}
|
||
|
||
|
||
|
||
|
||
|
||
virtual void calculateLocalInertia(btScalar mass,btVector3& inertia) const;
|
||
|
||
|
||
|
||
|
||
virtual const char* getName()const
|
||
{
|
||
return "GImpactMeshShapePart";
|
||
}
|
||
|
||
virtual eGIMPACT_SHAPE_TYPE getGImpactShapeType() const
|
||
{
|
||
return CONST_GIMPACT_TRIMESH_SHAPE_PART;
|
||
}
|
||
|
||
//! Determines if this shape has triangles
|
||
virtual bool needsRetrieveTriangles() const
|
||
{
|
||
return true;
|
||
}
|
||
|
||
//! Determines if this shape has tetrahedrons
|
||
virtual bool needsRetrieveTetrahedrons() const
|
||
{
|
||
return false;
|
||
}
|
||
|
||
virtual void getBulletTriangle(int prim_index,btTriangleShapeEx & triangle) const
|
||
{
|
||
m_primitive_manager.get_bullet_triangle(prim_index,triangle);
|
||
}
|
||
|
||
virtual void getBulletTetrahedron(int prim_index,btTetrahedronShapeEx & tetrahedron) const
|
||
{
|
||
(void) prim_index;
|
||
(void) tetrahedron;
|
||
btAssert(0);
|
||
}
|
||
|
||
|
||
|
||
SIMD_FORCE_INLINE int getVertexCount() const
|
||
{
|
||
return m_primitive_manager.get_vertex_count();
|
||
}
|
||
|
||
SIMD_FORCE_INLINE void getVertex(int vertex_index, btVector3 & vertex) const
|
||
{
|
||
m_primitive_manager.get_vertex(vertex_index,vertex);
|
||
}
|
||
|
||
SIMD_FORCE_INLINE void setMargin(btScalar margin)
|
||
{
|
||
m_primitive_manager.m_margin = margin;
|
||
postUpdate();
|
||
}
|
||
|
||
SIMD_FORCE_INLINE btScalar getMargin() const
|
||
{
|
||
return m_primitive_manager.m_margin;
|
||
}
|
||
|
||
virtual void setLocalScaling(const btVector3& scaling)
|
||
{
|
||
m_primitive_manager.m_scale = scaling;
|
||
postUpdate();
|
||
}
|
||
|
||
virtual const btVector3& getLocalScaling() const
|
||
{
|
||
return m_primitive_manager.m_scale;
|
||
}
|
||
|
||
SIMD_FORCE_INLINE int getPart() const
|
||
{
|
||
return (int)m_primitive_manager.m_part;
|
||
}
|
||
|
||
virtual void processAllTriangles(btTriangleCallback* callback,const btVector3& aabbMin,const btVector3& aabbMax) const;
|
||
virtual void processAllTrianglesRay(btTriangleCallback* callback,const btVector3& rayFrom,const btVector3& rayTo) const;
|
||
};
|
||
|
||
|
||
//! This class manages a mesh supplied by the btStridingMeshInterface interface.
|
||
/*!
|
||
Set of btGImpactMeshShapePart parts
|
||
- Simply create this shape by passing the btStridingMeshInterface to the constructor btGImpactMeshShape, then you must call updateBound() after creating the mesh
|
||
|
||
- You can handle deformable meshes with this shape, by calling postUpdate() every time when changing the mesh vertices.
|
||
|
||
*/
|
||
class btGImpactMeshShape : public btGImpactShapeInterface
|
||
{
|
||
btStridingMeshInterface* m_meshInterface;
|
||
|
||
protected:
|
||
btAlignedObjectArray<btGImpactMeshShapePart*> m_mesh_parts;
|
||
void buildMeshParts(btStridingMeshInterface * meshInterface)
|
||
{
|
||
for (int i=0;i<meshInterface->getNumSubParts() ;++i )
|
||
{
|
||
btGImpactMeshShapePart * newpart = new btGImpactMeshShapePart(meshInterface,i);
|
||
m_mesh_parts.push_back(newpart);
|
||
}
|
||
}
|
||
|
||
//! use this function for perfofm refit in bounding boxes
|
||
virtual void calcLocalAABB()
|
||
{
|
||
m_localAABB.invalidate();
|
||
int i = m_mesh_parts.size();
|
||
while(i--)
|
||
{
|
||
m_mesh_parts[i]->updateBound();
|
||
m_localAABB.merge(m_mesh_parts[i]->getLocalBox());
|
||
}
|
||
}
|
||
|
||
public:
|
||
btGImpactMeshShape(btStridingMeshInterface * meshInterface)
|
||
{
|
||
m_meshInterface = meshInterface;
|
||
buildMeshParts(meshInterface);
|
||
}
|
||
|
||
virtual ~btGImpactMeshShape()
|
||
{
|
||
int i = m_mesh_parts.size();
|
||
while(i--)
|
||
{
|
||
btGImpactMeshShapePart * part = m_mesh_parts[i];
|
||
delete part;
|
||
}
|
||
m_mesh_parts.clear();
|
||
}
|
||
|
||
|
||
btStridingMeshInterface* getMeshInterface()
|
||
{
|
||
return m_meshInterface;
|
||
}
|
||
|
||
const btStridingMeshInterface* getMeshInterface() const
|
||
{
|
||
return m_meshInterface;
|
||
}
|
||
|
||
int getMeshPartCount() const
|
||
{
|
||
return m_mesh_parts.size();
|
||
}
|
||
|
||
btGImpactMeshShapePart * getMeshPart(int index)
|
||
{
|
||
return m_mesh_parts[index];
|
||
}
|
||
|
||
|
||
|
||
const btGImpactMeshShapePart * getMeshPart(int index) const
|
||
{
|
||
return m_mesh_parts[index];
|
||
}
|
||
|
||
|
||
virtual void setLocalScaling(const btVector3& scaling)
|
||
{
|
||
localScaling = scaling;
|
||
|
||
int i = m_mesh_parts.size();
|
||
while(i--)
|
||
{
|
||
btGImpactMeshShapePart * part = m_mesh_parts[i];
|
||
part->setLocalScaling(scaling);
|
||
}
|
||
|
||
m_needs_update = true;
|
||
}
|
||
|
||
virtual void setMargin(btScalar margin)
|
||
{
|
||
m_collisionMargin = margin;
|
||
|
||
int i = m_mesh_parts.size();
|
||
while(i--)
|
||
{
|
||
btGImpactMeshShapePart * part = m_mesh_parts[i];
|
||
part->setMargin(margin);
|
||
}
|
||
|
||
m_needs_update = true;
|
||
}
|
||
|
||
//! Tells to this object that is needed to refit all the meshes
|
||
virtual void postUpdate()
|
||
{
|
||
int i = m_mesh_parts.size();
|
||
while(i--)
|
||
{
|
||
btGImpactMeshShapePart * part = m_mesh_parts[i];
|
||
part->postUpdate();
|
||
}
|
||
|
||
m_needs_update = true;
|
||
}
|
||
|
||
virtual void calculateLocalInertia(btScalar mass,btVector3& inertia) const;
|
||
|
||
|
||
//! Obtains the primitive manager
|
||
virtual const btPrimitiveManagerBase * getPrimitiveManager() const
|
||
{
|
||
btAssert(0);
|
||
return NULL;
|
||
}
|
||
|
||
|
||
//! Gets the number of children
|
||
virtual int getNumChildShapes() const
|
||
{
|
||
btAssert(0);
|
||
return 0;
|
||
}
|
||
|
||
|
||
//! if true, then its children must get transforms.
|
||
virtual bool childrenHasTransform() const
|
||
{
|
||
btAssert(0);
|
||
return false;
|
||
}
|
||
|
||
//! Determines if this shape has triangles
|
||
virtual bool needsRetrieveTriangles() const
|
||
{
|
||
btAssert(0);
|
||
return false;
|
||
}
|
||
|
||
//! Determines if this shape has tetrahedrons
|
||
virtual bool needsRetrieveTetrahedrons() const
|
||
{
|
||
btAssert(0);
|
||
return false;
|
||
}
|
||
|
||
virtual void getBulletTriangle(int prim_index,btTriangleShapeEx & triangle) const
|
||
{
|
||
(void) prim_index; (void) triangle;
|
||
btAssert(0);
|
||
}
|
||
|
||
virtual void getBulletTetrahedron(int prim_index,btTetrahedronShapeEx & tetrahedron) const
|
||
{
|
||
(void) prim_index; (void) tetrahedron;
|
||
btAssert(0);
|
||
}
|
||
|
||
//! call when reading child shapes
|
||
virtual void lockChildShapes() const
|
||
{
|
||
btAssert(0);
|
||
}
|
||
|
||
virtual void unlockChildShapes() const
|
||
{
|
||
btAssert(0);
|
||
}
|
||
|
||
|
||
|
||
|
||
//! Retrieves the bound from a child
|
||
/*!
|
||
*/
|
||
virtual void getChildAabb(int child_index,const btTransform& t,btVector3& aabbMin,btVector3& aabbMax) const
|
||
{
|
||
(void) child_index; (void) t; (void) aabbMin; (void) aabbMax;
|
||
btAssert(0);
|
||
}
|
||
|
||
//! Gets the children
|
||
virtual btCollisionShape* getChildShape(int index)
|
||
{
|
||
(void) index;
|
||
btAssert(0);
|
||
return NULL;
|
||
}
|
||
|
||
|
||
//! Gets the child
|
||
virtual const btCollisionShape* getChildShape(int index) const
|
||
{
|
||
(void) index;
|
||
btAssert(0);
|
||
return NULL;
|
||
}
|
||
|
||
//! Gets the children transform
|
||
virtual btTransform getChildTransform(int index) const
|
||
{
|
||
(void) index;
|
||
btAssert(0);
|
||
return btTransform();
|
||
}
|
||
|
||
//! Sets the children transform
|
||
/*!
|
||
\post You must call updateBound() for update the box set.
|
||
*/
|
||
virtual void setChildTransform(int index, const btTransform & transform)
|
||
{
|
||
(void) index; (void) transform;
|
||
btAssert(0);
|
||
}
|
||
|
||
|
||
virtual eGIMPACT_SHAPE_TYPE getGImpactShapeType() const
|
||
{
|
||
return CONST_GIMPACT_TRIMESH_SHAPE;
|
||
}
|
||
|
||
|
||
virtual const char* getName()const
|
||
{
|
||
return "GImpactMesh";
|
||
}
|
||
|
||
virtual void rayTest(const btVector3& rayFrom, const btVector3& rayTo, btCollisionWorld::RayResultCallback& resultCallback) const;
|
||
|
||
//! Function for retrieve triangles.
|
||
/*!
|
||
It gives the triangles in local space
|
||
*/
|
||
virtual void processAllTriangles(btTriangleCallback* callback,const btVector3& aabbMin,const btVector3& aabbMax) const;
|
||
|
||
virtual void processAllTrianglesRay (btTriangleCallback* callback,const btVector3& rayFrom,const btVector3& rayTo) const;
|
||
|
||
virtual int calculateSerializeBufferSize() const;
|
||
|
||
///fills the dataBuffer and returns the struct name (and 0 on failure)
|
||
virtual const char* serialize(void* dataBuffer, btSerializer* serializer) const;
|
||
|
||
};
|
||
|
||
///do not change those serialization structures, it requires an updated sBulletDNAstr/sBulletDNAstr64
|
||
struct btGImpactMeshShapeData
|
||
{
|
||
btCollisionShapeData m_collisionShapeData;
|
||
|
||
btStridingMeshInterfaceData m_meshInterface;
|
||
|
||
btVector3FloatData m_localScaling;
|
||
|
||
float m_collisionMargin;
|
||
|
||
int m_gimpactSubType;
|
||
};
|
||
|
||
SIMD_FORCE_INLINE int btGImpactMeshShape::calculateSerializeBufferSize() const
|
||
{
|
||
return sizeof(btGImpactMeshShapeData);
|
||
}
|
||
|
||
|
||
#endif //GIMPACT_MESH_SHAPE_H
|