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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
130 lines
4.2 KiB
C++
130 lines
4.2 KiB
C++
/*
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Copyright (c) 2005 Gino van den Bergen / Erwin Coumans http://continuousphysics.com
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Permission is hereby granted, free of charge, to any person or organization
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obtaining a copy of the software and accompanying documentation covered by
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this license (the "Software") to use, reproduce, display, distribute,
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execute, and transmit the Software, and to prepare derivative works of the
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Software, and to permit third-parties to whom the Software is furnished to
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do so, all subject to the following:
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The copyright notices in the Software and this entire statement, including
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the above license grant, this restriction and the following disclaimer,
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must be included in all copies of the Software, in whole or in part, and
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all derivative works of the Software, unless such copies or derivative
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works are solely in the form of machine-executable object code generated by
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a source language processor.
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THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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FITNESS FOR A PARTICULAR PURPOSE, TITLE AND NON-INFRINGEMENT. IN NO EVENT
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SHALL THE COPYRIGHT HOLDERS OR ANYONE DISTRIBUTING THE SOFTWARE BE LIABLE
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FOR ANY DAMAGES OR OTHER LIABILITY, WHETHER IN CONTRACT, TORT OR OTHERWISE,
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ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
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DEALINGS IN THE SOFTWARE.
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*/
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#ifndef IDEBUG_DRAW__H
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#define IDEBUG_DRAW__H
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#include "btVector3.h"
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///The btIDebugDraw interface class allows hooking up a debug renderer to visually debug simulations.
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///Typical use case: create a debug drawer object, and assign it to a btCollisionWorld or btDynamicsWorld using setDebugDrawer and call debugDrawWorld.
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///A class that implements the btIDebugDraw interface has to implement the drawLine method at a minimum.
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class btIDebugDraw
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{
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public:
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enum DebugDrawModes
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{
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DBG_NoDebug=0,
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DBG_DrawWireframe = 1,
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DBG_DrawAabb=2,
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DBG_DrawFeaturesText=4,
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DBG_DrawContactPoints=8,
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DBG_NoDeactivation=16,
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DBG_NoHelpText = 32,
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DBG_DrawText=64,
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DBG_ProfileTimings = 128,
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DBG_EnableSatComparison = 256,
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DBG_DisableBulletLCP = 512,
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DBG_EnableCCD = 1024,
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DBG_MAX_DEBUG_DRAW_MODE
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};
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virtual ~btIDebugDraw() {};
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virtual void drawLine(const btVector3& from,const btVector3& to, const btVector3& fromColor, const btVector3& toColor)
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{
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drawLine (from, to, fromColor);
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}
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virtual void drawBox (const btVector3& boxMin, const btVector3& boxMax, const btVector3& color, btScalar alpha)
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{
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}
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virtual void drawSphere (const btVector3& p, btScalar radius, const btVector3& color)
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{
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}
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virtual void drawLine(const btVector3& from,const btVector3& to,const btVector3& color)=0;
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virtual void drawTriangle(const btVector3& v0,const btVector3& v1,const btVector3& v2,const btVector3& /*n0*/,const btVector3& /*n1*/,const btVector3& /*n2*/,const btVector3& color, btScalar alpha)
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{
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drawTriangle(v0,v1,v2,color,alpha);
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}
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virtual void drawTriangle(const btVector3& v0,const btVector3& v1,const btVector3& v2,const btVector3& color, btScalar /*alpha*/)
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{
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drawLine(v0,v1,color);
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drawLine(v1,v2,color);
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drawLine(v2,v0,color);
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}
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virtual void drawContactPoint(const btVector3& PointOnB,const btVector3& normalOnB,btScalar distance,int lifeTime,const btVector3& color)=0;
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virtual void reportErrorWarning(const char* warningString) = 0;
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virtual void draw3dText(const btVector3& location,const char* textString) = 0;
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virtual void setDebugMode(int debugMode) =0;
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virtual int getDebugMode() const = 0;
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inline void drawAabb(const btVector3& from,const btVector3& to,const btVector3& color)
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{
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btVector3 halfExtents = (to-from)* 0.5f;
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btVector3 center = (to+from) *0.5f;
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int i,j;
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btVector3 edgecoord(1.f,1.f,1.f),pa,pb;
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for (i=0;i<4;i++)
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{
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for (j=0;j<3;j++)
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{
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pa = btVector3(edgecoord[0]*halfExtents[0], edgecoord[1]*halfExtents[1],
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edgecoord[2]*halfExtents[2]);
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pa+=center;
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int othercoord = j%3;
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edgecoord[othercoord]*=-1.f;
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pb = btVector3(edgecoord[0]*halfExtents[0], edgecoord[1]*halfExtents[1],
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edgecoord[2]*halfExtents[2]);
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pb+=center;
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drawLine(pa,pb,color);
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}
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edgecoord = btVector3(-1.f,-1.f,-1.f);
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if (i<3)
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edgecoord[i]*=-1.f;
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}
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}
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};
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#endif //IDEBUG_DRAW__H
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