a8ec916af0
Please see HfFluidDemo.cpp for examples of how to use the height field fluid along with buoyant collision shapes. The implementation is still lacking in my ways: 1) Need to complete more collision algorithms for buoyant collision shapes 2) Support compound buoyant shapes 3) The buoyancy model isn't that great 4) Fluid volume can be lost over time
79 lines
2.0 KiB
C++
79 lines
2.0 KiB
C++
#ifndef BT_HF_FLUID_COLLISION_SHAPE_H
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#define BT_HF_FLUID_COLLISION_SHAPE_H
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#include "BulletHfFluid/btHfFluid.h"
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#include "BulletCollision/BroadphaseCollision/btBroadphaseInterface.h"
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#include "BulletCollision/CollisionDispatch/btCollisionDispatcher.h"
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#include "BulletCollision/CollisionShapes/btConvexInternalShape.h"
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#include "BulletCollision/CollisionShapes/btConcaveShape.h"
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class btHfFluidCollisionShape : public btConcaveShape
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{
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public:
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btHfFluid* m_fluid;
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btHfFluidCollisionShape(btHfFluid* backptr) : btConcaveShape ()
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{
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m_shapeType = HFFLUID_SHAPE_PROXYTYPE;
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m_fluid=backptr;
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}
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virtual ~btHfFluidCollisionShape()
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{
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}
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void processAllTriangles(btTriangleCallback* /*callback*/,const btVector3& /*aabbMin*/,const btVector3& /*aabbMax*/) const
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{
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//not yet
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btAssert(0);
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}
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///getAabb returns the axis aligned bounding box in the coordinate frame of the given transform t.
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virtual void getAabb(const btTransform& t,btVector3& aabbMin,btVector3& aabbMax) const
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{
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/* t should be identity, but better be safe than...fast? */
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btVector3 mins;
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btVector3 maxs;
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m_fluid->getAabb (mins, maxs);
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const btVector3 crns[]={t*btVector3(mins.x(),mins.y(),mins.z()),
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t*btVector3(maxs.x(),mins.y(),mins.z()),
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t*btVector3(maxs.x(),maxs.y(),mins.z()),
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t*btVector3(mins.x(),maxs.y(),mins.z()),
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t*btVector3(mins.x(),mins.y(),maxs.z()),
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t*btVector3(maxs.x(),mins.y(),maxs.z()),
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t*btVector3(maxs.x(),maxs.y(),maxs.z()),
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t*btVector3(mins.x(),maxs.y(),maxs.z())};
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aabbMin=aabbMax=crns[0];
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for(int i=1;i<8;++i)
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{
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aabbMin.setMin(crns[i]);
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aabbMax.setMax(crns[i]);
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}
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}
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virtual void setLocalScaling(const btVector3& /*scaling*/)
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{
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///na
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btAssert(0);
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}
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virtual const btVector3& getLocalScaling() const
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{
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static const btVector3 dummy(1,1,1);
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return dummy;
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}
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virtual void calculateLocalInertia(btScalar /*mass*/,btVector3& /*inertia*/) const
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{
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///not yet
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btAssert(0);
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}
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virtual const char* getName()const
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{
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return "HfFluid";
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}
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};
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#endif
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