TerrainRenderablePlane::TerrainRenderablePlane(GameEntity* parent):
TerrainRenderable(parent)
{
D3DXVECTOR3 org000(0,0,0);
D3DXVECTOR3 nrm(0,1,0);
D3DXPlaneFromPointNormal(&m_phy_shape,&org000,&nrm);
}
bool CD3DWater::Create(float iSizeX, float iSizeY,
float iPosX , // 横坐标
float iPosY , // 纵坐标
float iHeight )
{
if (!LoadContent())
return false;
FetchSurfaces();//获得折射反射渲染表面
if (FAILED(m_pDevice->CreateVertexBuffer(6 * sizeof(VertexPositionTex),
D3DUSAGE_WRITEONLY,
VertexPositionTex::FVF,
D3DPOOL_DEFAULT,
&m_pVB,
0)))
return false;
VertexPositionTex* pVertices;
m_pVB->Lock(0, 0, (void**)&pVertices, 0);
pVertices[0] = VertexPositionTex{ iPosX, iHeight, iPosY + iSizeY, 0, 0 };
pVertices[1] = VertexPositionTex{ iPosX + iSizeX, iHeight, iPosY + iSizeY, 1, 0 };
pVertices[2] = VertexPositionTex{ iPosX, iHeight, iPosY, 0, 1 };
pVertices[3] = VertexPositionTex{ iPosX + iSizeX, iHeight, iPosY + iSizeY, 1, 0 };
pVertices[4] = VertexPositionTex{ iPosX + iSizeX, iHeight, iPosY, 1, 1 };
pVertices[5] = VertexPositionTex{ iPosX, iHeight, iPosY, 0, 1 };
m_pVB->Unlock();
//设置摄像机反射面
//创建折射 反射横切面
D3DXPlaneFromPointNormal(&m_waterPlane, &D3DXVECTOR3(iPosX, iHeight, iPosY), &D3DXVECTOR3(0,1,0));
D3DXPlaneNormalize(&m_waterPlane, &m_waterPlane);
return true;
}
void MSPlane::RenderStencil( float dTime, D3DXVECTOR3 pos )
{
// 평면 생성
D3DXPLANE plane;
D3DXPlaneFromPointNormal(&plane, &pos, &D3DXVECTOR3(0, 1, 0));
// 반사 행렬 생성
D3DXMATRIX mReflect;
D3DXMatrixReflect(&mReflect, &plane);
// 최종 행렬
D3DXMATRIX mTMReflect;
D3DXMatrixMultiply(&mTMReflect, &m_mTM, &mReflect);
// 그리기모드 설정
g_pDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_CW);
// 최종 월드 행렬 설정
g_pDevice->SetTransform(D3DTS_WORLD, &mTMReflect);
RenderPlaneMesh(dTime, mTMReflect, true);
//옵션 복구.
g_pDevice->SetRenderState(D3DRS_CULLMODE, D3DCULL_CCW);
}
PlaneIntergrationMaker()
{
D3DXVECTOR3 vNormal(1,1,1);
D3DXVec3Normalize(&vNormal, &vNormal);
FLOAT fNear = (FLOAT)em_mesh_range / 4;
D3DXPlaneFromPointNormal(&plane, &D3DXVECTOR3(fNear, 0,0), &vNormal);
}
BOOL KG3DBaseCoordImp::IntersectPlaneAndFindPoint( KG3DCOORD WhichCoord
, const D3DXVECTOR3& Center
, const D3DXVECTOR3& vSrc
, const D3DXVECTOR3& vDir
, D3DXVECTOR3& vInter )
{
_ASSERTE(WhichCoord >= KG3DCOORD_FIRST_AXIS && WhichCoord <= KG3DCOORD_INTEGRATION);
D3DXPLANE planeUse;
if(WhichCoord >= KG3DCOORD_FIRST_AXIS && WhichCoord < KG3DCOORD_FIRST_AXIS + KG3DCOORD_AXIS_COUNT)
{
//如果选中的是线,那么找过这条线和发射线垂直的面，然后求交点
const D3DXVECTOR3& vAxis = D3DXVec3GetNormalOfPlane(WhichCoord - KG3DCOORD_FIRST_AXIS);
D3DXVECTOR3 vUp;
D3DXVec3Cross(&vUp, &vAxis, &vDir);
D3DXVECTOR3 vNormalOfBestPlane;
D3DXVec3Cross(&vNormalOfBestPlane, &vUp, &vAxis);
D3DXVec3Normalize(&vNormalOfBestPlane, &vNormalOfBestPlane);
D3DXPlaneFromPointNormal(&planeUse, &Center, &vNormalOfBestPlane);
}
else if(WhichCoord >= KG3DCOORD_FIRST_PLANE && WhichCoord < KG3DCOORD_FIRST_PLANE + KG3DCOORD_PLANE_COUNT)
{
const D3DXVECTOR3& NormalUse = D3DXVec3GetNormalOfPlane(WhichCoord - KG3DCOORD_FIRST_PLANE);
D3DXPlaneFromPointNormal(&planeUse, &Center, &NormalUse);
}
else if (WhichCoord == KG3DCOORD_INTEGRATION)
{
const D3DXPLANE planeIntergration = GetPlaneIntergration();
const D3DXVECTOR3& NormalUse = (const D3DXVECTOR3&)planeIntergration;
D3DXPlaneFromPointNormal(&planeUse, &Center, &NormalUse);
}
else
{
return FALSE;
}
const FLOAT someLargeLength = 100000.f;
return NULL != D3DXPlaneIntersectLine(&vInter, &planeUse, &vSrc, &(vSrc + vDir * someLargeLength));
}
void Storm3D_SpotlightShared::setClipPlanes(const float *cameraView)
{
D3DXMATRIX m(cameraView);
float determinant = D3DXMatrixDeterminant(&m);
D3DXMatrixInverse(&m, &determinant, &m);
D3DXMatrixTranspose(&m, &m);
D3DXVECTOR3 d(direction.x, direction.y, direction.z);
VC2 bd(d.x, d.z);
bd.Normalize();
D3DXVECTOR3 p1(position.x - 8*bd.x, position.y, position.z - 8*bd.y);
//D3DXVECTOR3 p1(position.x - 1*bd.x, position.y, position.z - 1*bd.y);
D3DXVECTOR3 p2(p1.x, p1.y + 5.f, p1.z);
float angle = D3DXToRadian(fov) * .55f;
D3DXPLANE leftPlane;
D3DXMATRIX leftTransform;
D3DXMatrixRotationY(&leftTransform, -angle);
D3DXVECTOR3 leftPoint(direction.x, 0, direction.z);
D3DXVECTOR4 leftPoint2;
D3DXVec3Transform(&leftPoint2, &leftPoint, &leftTransform);
leftPoint = p1;
leftPoint.x += leftPoint2.x;
leftPoint.z += leftPoint2.z;
D3DXPlaneFromPoints(&leftPlane, &p1, &p2, &leftPoint);
D3DXPlaneNormalize(&leftPlane, &leftPlane);
D3DXPlaneTransform(&leftPlane, &leftPlane, &m);
D3DXPLANE rightPlane;
D3DXMATRIX rightTransform;
D3DXMatrixRotationY(&rightTransform, angle);
D3DXVECTOR3 rightPoint(direction.x, 0, direction.z);
D3DXVECTOR4 rightPoint2;
D3DXVec3Transform(&rightPoint2, &rightPoint, &rightTransform);
rightPoint = p1;
rightPoint.x += rightPoint2.x;
rightPoint.z += rightPoint2.z;
D3DXPlaneFromPoints(&rightPlane, &rightPoint, &p2, &p1);
D3DXPlaneNormalize(&rightPlane, &rightPlane);
D3DXPlaneTransform(&rightPlane, &rightPlane, &m);
D3DXPLANE backPlane;
D3DXVECTOR3 pb(p1.x, p1.y, p1.z);
D3DXPlaneFromPointNormal(&backPlane, &pb, &d);
D3DXPlaneNormalize(&backPlane, &backPlane);
D3DXPlaneTransform(&backPlane, &backPlane, &m);
device.SetClipPlane(0, leftPlane);
device.SetClipPlane(1, rightPlane);
device.SetClipPlane(2, backPlane);
device.SetRenderState(D3DRS_CLIPPLANEENABLE, D3DCLIPPLANE0 | D3DCLIPPLANE1 | D3DCLIPPLANE2);
}
bool CWall3D::intersectRay( const SLine3& ray, float& t ) const
{
SPlane plane;
D3DXPlaneFromPointNormal( &plane, &mMatrix.getOrigin(), &mMatrix.getAxisZ() );
SVector3 pt;
if( !plane.intersect( ray, pt ) ) {
return false;
}
t = ray.project( pt );
if( t < 0 )
return false;
return true;
}
CBoxObject::CBoxObject()
{
D3DXVECTOR3 Normal[6]{ D3DXVECTOR3(0, 0, -1), D3DXVECTOR3(0, 0, 1),
D3DXVECTOR3(0, -1, 0), D3DXVECTOR3(0, 1, 0), D3DXVECTOR3(-1, 0, 0), D3DXVECTOR3(1, 0, 0) };
D3DXVECTOR3 point[6]{ D3DXVECTOR3(0, 0, PLANE_WIDTH / 2), D3DXVECTOR3(0, 0, -PLANE_WIDTH / 2),
D3DXVECTOR3(0, PLANE_WIDTH/2, 0), D3DXVECTOR3(0, -PLANE_WIDTH / 2, 0), D3DXVECTOR3(PLANE_WIDTH / 2, 0, 0), D3DXVECTOR3(-PLANE_WIDTH / 2, 0, 0) };
for (int i = 0; i < 6; ++i)
{
m_point[i] = point[i];
m_Normal[i] = Normal[i];
D3DXPlaneFromPointNormal(&m_Plane[i], &m_point[i], &m_Normal[i]);
}
}
// Project the mouse cursor from screen space to object space
void EditExt::ProjectScreenToWorld(D3DXVECTOR3* pOut, float screenX, float screenY, float worldZ)
{
D3DXVECTOR3 lineBegin, lineEnd;
// Unproject the near and far points given by the screen X,Y coords
D3DXVECTOR3 screenSpace(screenX, screenY, 0.0f);
D3DXVec3Unproject(&lineBegin, &screenSpace, &viewport, &projection_matrix, &view_matrix, &worldMatrix);
screenSpace.z = 1.0f;
D3DXVec3Unproject(&lineEnd, &screenSpace, &viewport, &projection_matrix, &view_matrix, &worldMatrix);
// Using a plane intersection, we can determine the object space coordinates of the screen space coords
// at a certain Z depth, intersecting the line given above.
orig.z = worldZ;
D3DXPlaneFromPointNormal(&plane, &orig, &normal);
D3DXPlaneIntersectLine(pOut, &plane, &lineBegin, &lineEnd);
}
TEST( Plane, setFromPointNormal )
{
Plane tamyPlane;
D3DXPLANE dxPlane;
Vector point, normal;
point.set( 10, 20, 30 );
normal.set( Quad_1000 );
D3DXPlaneFromPointNormal( &dxPlane, ( const D3DXVECTOR3* )&point, ( const D3DXVECTOR3* )&normal );
tamyPlane.setFromPointNormal( point, normal );
COMPARE_PLANE( dxPlane, tamyPlane );
point.set( -4, 0, 5.5f );
normal.set( Quad_0100 );
D3DXPlaneFromPointNormal( &dxPlane, ( const D3DXVECTOR3* )&point, ( const D3DXVECTOR3* )&normal );
tamyPlane.setFromPointNormal( point, normal );
COMPARE_PLANE( dxPlane, tamyPlane );
point.set( 0, 0, -20.0f );
normal.set( Quad_0010 );
D3DXPlaneFromPointNormal( &dxPlane, ( const D3DXVECTOR3* )&point, ( const D3DXVECTOR3* )&normal );
tamyPlane.setFromPointNormal( point, normal );
COMPARE_PLANE( dxPlane, tamyPlane );
point.set( 10, 20, 30 );
normal.set( Quad_Neg_1000 );
D3DXPlaneFromPointNormal( &dxPlane, ( const D3DXVECTOR3* )&point, ( const D3DXVECTOR3* )&normal );
tamyPlane.setFromPointNormal( point, normal );
COMPARE_PLANE( dxPlane, tamyPlane );
point.set( -4, 0, 5.5f );
normal.set( Quad_Neg_0100 );
D3DXPlaneFromPointNormal( &dxPlane, ( const D3DXVECTOR3* )&point, ( const D3DXVECTOR3* )&normal );
tamyPlane.setFromPointNormal( point, normal );
COMPARE_PLANE( dxPlane, tamyPlane );
point.set( 0, 0, -20.0f );
normal.set( Quad_Neg_0010 );
D3DXPlaneFromPointNormal( &dxPlane, ( const D3DXVECTOR3* )&point, ( const D3DXVECTOR3* )&normal );
tamyPlane.setFromPointNormal( point, normal );
COMPARE_PLANE( dxPlane, tamyPlane );
}
HRESULT KG3DRotationCoordinateOld::RotateBegin()
{
//m_matEntityWorld = m_EntityList.GetWorldMatrix();
{
D3DXVECTOR3 vCenter(0,0,0);
KSF::GetSelectionCenter(m_pAttachScene->GetSelectionTool(), vCenter);
D3DXMatrixTranslation(&m_matEntityWorld, vCenter.x, vCenter.y, vCenter.z);
}
m_vBeginCross.x = m_matEntityWorld._41;
m_vBeginCross.y = m_matEntityWorld._42;
m_vBeginCross.z = m_matEntityWorld._43;
m_vPrevCross = m_vBeginCross;
HRESULT hResult = E_FAIL;
HRESULT hRetCode = E_FAIL;
D3DXVECTOR3 vOrg;
D3DXVECTOR3 vDir;
D3DXMATRIX matWorldInv;
D3DXVECTOR3 vCrossXZ;
D3DXVECTOR3 vCrossYZ;
D3DXVECTOR3 vCrossXY;
D3DXPLANE planeXZ;
D3DXPLANE planeXY;
D3DXPLANE planeYZ;
D3DXVECTOR3 vPoint = D3DXVECTOR3(m_matCoord._41, m_matCoord._42, m_matCoord._43);
D3DXVECTOR3 vNorXZ = D3DXVECTOR3(m_matCoord._21, m_matCoord._22, m_matCoord._23);
D3DXVECTOR3 vNorXY = D3DXVECTOR3(m_matCoord._31, m_matCoord._32, m_matCoord._33);
D3DXVECTOR3 vNorYZ = D3DXVECTOR3(m_matCoord._11, m_matCoord._12, m_matCoord._13);
D3DXVECTOR3 vCross;
IEKG3DSceneOutputWnd *piCurOutputWnd = NULL;
KG_PROCESS_ERROR(m_dwCurrSelCoord != 0xFFFFFFFF);
//KG_PROCESS_ERROR(m_pAttachScene);
//KG_PROCESS_ERROR(m_EntityList.GetSize());
_ASSERTE(NULL != m_pAttachScene);
KG_PROCESS_ERROR(0 != m_pAttachScene->GetSelectionTool().GetSelectionCount());
hRetCode = m_pAttachScene->GetCurOutputWnd(&piCurOutputWnd);
KGLOG_COM_PROCESS_ERROR(hRetCode);
piCurOutputWnd->GetPickRay(&vOrg, &vDir, NULL);
D3DXPlaneFromPointNormal(
&planeXZ,
&vPoint,
&vNorXZ
);
D3DXPlaneFromPointNormal(
&planeXY,
&vPoint,
&vNorXY
);
D3DXPlaneFromPointNormal(
&planeYZ,
&vPoint,
&vNorYZ
);
D3DXPlaneNormalize(&planeYZ, &planeYZ);
D3DXPlaneNormalize(&planeXZ, &planeXZ);
D3DXPlaneNormalize(&planeXY, &planeXY);
switch (m_dwCurrSelCoord)
{
case 0 : // y
KG_PROCESS_ERROR(
D3DXPlaneIntersectLine(
&vCross,
&planeXZ,
&vOrg,
&(vOrg + vDir * 10000000.0f)
)
);
m_vPrevCross = vCross;
m_currSelPane = planeXZ;
m_currSelNormal = vNorXZ;
break;
case 1 : // x
KG_PROCESS_ERROR(
D3DXPlaneIntersectLine(
&vCross,
&planeYZ,
&vOrg,
&(vOrg + vDir * 10000000.0f)
)
);
m_vPrevCross = vCross;
m_currSelPane = planeYZ;
m_currSelNormal = vNorYZ;
break;
case 2 : // z
KG_PROCESS_ERROR(
D3DXPlaneIntersectLine(
&vCross,
&planeXY,
&vOrg,
&(vOrg + vDir * 10000000.0f)
)
);
m_vPrevCross = vCross;
m_currSelPane = planeXY;
m_currSelNormal = vNorXY;
break;
default :
ASSERT(FALSE);
break;
}
m_vBeginCross = m_vPrevCross;
m_fAngelX = 0.0f;
m_fAngelY = 0.0f;
m_fAngelZ = 0.0f;
m_nMoveFlag = TRUE;
hResult = S_OK;
Exit0:
return hResult;
}
HRESULT KSceneSwordTest::InitPhysicsTest(int choice)
{
Physics::LPRIGIDBODY pRigid = NULL;
Physics::LPRIGIDBODY pRigid0 = NULL;
D3DXPLANE plane;
///////////////////////////////////////////////////////////////////////////////////////////////////
//说明
//1. 刚体初始化的问题,一定要先调用SetSP函数,后调用Initialise函数
// pRigid->SetSP() (用于确定刚体的几何属性)
// pRigid->Initialise() (用于确定刚体的物理属性)
//
//2.刚体进行初始化操作后可以设置的属性
// SetMass(float mass); 设置质量
// SetInertia(float inertia); 设置转动惯量,目前转动惯量以一个浮点数来表示,可以考虑使用一个矩阵来存储多维转动惯量信息
// m_LineVel; 线速度
// m_AngVel; 角速度
// m_Force; 合力 //注意事项,在物理环境中尽量不要直接设置合力或合力矩,可以去设置线速度或角速度
// m_Torque; 合力矩
// m_matOrient; 刚体局部坐标系， 对应于质心 //注意,同样尽量不要尝试直接设置这个矩阵
// m_fStaticFriction; 静摩擦系数
// m_fDynamicFriction; 动摩擦系数
//
// 本来可以提供多一些参数设置,如
// m_bImmovable; 不可移动物体标记 //但需要对KPhysicsSimulator类稍做修改,并不困难,但来不及修改并测试,所以注释掉了
// //增加这一属性的思路是,如果两个物体都是不可移动物体,则不做碰撞检测
// //如果其中之一是不可移动物体,则做碰撞检测,在碰撞处理时,利用类似刚体撞平面的代码部分来完成冲量的计算
//
// m_bNonePenetration //这个变量的设置是为了阻止刚体之间互相嵌入现象的,可参考KPhysicsSimulator类中的这部分代码(已注释掉)
// //因为效果不好,所以也注释掉了,原理是根据刚体碰撞检测所得的嵌入深度,修正刚体预期的速度
//////////////////////////////////////////////////////////////////////////////////////////////////////
//3.物理环境设置的参数
// m_bAddingGravity; //是否考虑重力场作用
// m_bUsingFriction; //是否考虑摩擦力作用(目前只考虑了刚体中的摩擦系数,事实上可以考虑为平面类添加相应的摩擦系数,再在KPhysicsSimulator类中稍做修改即可)
// m_fEpsilon; //碰撞恢复系数,0~1之间,1为完全弹性碰撞,0为完全非弹性碰撞
//
// DisableCollision() //本函数可以屏蔽两刚体之间的碰撞
///////////////////////////////////////////////////////////////////////////////////////////////////
switch(choice)
{
case 1: //单个物体自由落体碰撞地面的效果,启用重力,摩擦力,碰撞恢复系数0.65f
m_Sim.m_bAddingGravity = TRUE;
m_Sim.m_bUsingFriction = TRUE;
m_Sim.m_fEpsilon = 0.65f;
m_RigidTable.Get1NewRigidBody(&pRigid);
pRigid->SetSP( D3DXVECTOR3(0,300,0), D3DXVECTOR3(0,0.7f,0.7f), 70.0f, 30.0f );
pRigid->Initialise( D3DXVECTOR3(0,300,0), 1.0f, 833.3f );
m_Sim.AddRigidBody(pRigid);
D3DXPlaneFromPointNormal( &plane, &D3DXVECTOR3(0,0,0), &D3DXVECTOR3(0,1,0) );
m_Sim.listPlane.push_back( plane );
break;
case 2: //两刚体轴平行，无重力,无摩擦力,正碰,完全弹性碰撞
m_Sim.m_bAddingGravity = FALSE;
m_Sim.m_bUsingFriction = FALSE;
m_Sim.m_fEpsilon = 1.0f;
m_RigidTable.Get1NewRigidBody(&pRigid);
pRigid->SetSP( D3DXVECTOR3(1,100,0), D3DXVECTOR3(0,1,0), 70.0f, 30.0f );
pRigid->Initialise( D3DXVECTOR3(1,100,0), 1.0f, 833.3f );
m_Sim.AddRigidBody(pRigid);
m_RigidTable.Get1NewRigidBody(&pRigid);
pRigid->SetSP( D3DXVECTOR3(1000,100,0), D3DXVECTOR3(0,1,0), 70.0f, 30.0f );
pRigid->Initialise( D3DXVECTOR3(1000,100,0), 1.0f, 833.3f );
pRigid->m_LineVel = D3DXVECTOR3(-100,0,0);
m_Sim.AddRigidBody(pRigid);
break;
case 3: //两轴异面垂直,无重力,无摩擦力,完全弹性碰撞
m_Sim.m_bAddingGravity = FALSE;
m_Sim.m_bUsingFriction = FALSE;
m_Sim.m_fEpsilon = 1.0f;
m_RigidTable.Get1NewRigidBody(&pRigid);
pRigid->SetSP( D3DXVECTOR3(1,100,0), D3DXVECTOR3(0,1,0), 70.0f, 30.0f );
pRigid->Initialise( D3DXVECTOR3(1,100,0), 1.0f, 833.3f );
m_Sim.AddRigidBody(pRigid);
m_RigidTable.Get1NewRigidBody(&pRigid);
pRigid->SetSP( D3DXVECTOR3(100,100,0), D3DXVECTOR3(0,0,1), 70.0f, 30.0f );
pRigid->Initialise( D3DXVECTOR3(100,100,0), 1.0f, 833.3f );
pRigid->m_LineVel = D3DXVECTOR3( -10, 0, 0 );
m_Sim.AddRigidBody(pRigid);
break;
case 4: //两轴平行，中心不等高,无重力,无摩擦力,完全弹性碰撞
m_Sim.m_bAddingGravity = FALSE;
m_Sim.m_bUsingFriction = FALSE;
m_Sim.m_fEpsilon = 1.0f;
m_RigidTable.Get1NewRigidBody(&pRigid);
pRigid->SetSP( D3DXVECTOR3(1,100,0), D3DXVECTOR3(0,1,0), 70.0f, 30.0f );
pRigid->Initialise( D3DXVECTOR3(1,100,0), 1.0f, 833.3f );
m_Sim.AddRigidBody(pRigid);
m_RigidTable.Get1NewRigidBody(&pRigid);
pRigid->SetSP( D3DXVECTOR3(100,180,0), D3DXVECTOR3(0,1,0), 70.0f, 30.0f );
pRigid->Initialise( D3DXVECTOR3(100,180,0), 1.0f, 833.3f );
pRigid->m_LineVel = D3DXVECTOR3( -10, 0, 0 );
m_Sim.AddRigidBody(pRigid);
break;
case 5: //两轴异面不垂直,无重力,无摩擦力,完全弹性碰撞
m_Sim.m_bAddingGravity = FALSE;
m_Sim.m_bUsingFriction = FALSE;
m_Sim.m_fEpsilon = 1.0f;
m_RigidTable.Get1NewRigidBody(&pRigid);
pRigid->SetSP( D3DXVECTOR3(1,100,0), D3DXVECTOR3(0,1,0), 70.0f, 30.0f );
pRigid->Initialise( D3DXVECTOR3(1,100,0), 1.0f, 833.3f );
m_Sim.AddRigidBody(pRigid);
m_RigidTable.Get1NewRigidBody(&pRigid);
pRigid->SetSP( D3DXVECTOR3(150,110,0), D3DXVECTOR3(0,0.7f,0.7f), 70.0f, 30.0f );
pRigid->Initialise( D3DXVECTOR3(150,110,0), 1.0f, 833.3f );
pRigid->m_LineVel = D3DXVECTOR3( -10, 0, 0 );
m_Sim.AddRigidBody(pRigid);
break;
case 6: //两轴异面， 刚体球体部分碰刚体柱体部分，无重力,无摩擦力,完全弹性碰撞
m_Sim.m_bAddingGravity = FALSE;
m_Sim.m_bUsingFriction = FALSE;
m_Sim.m_fEpsilon = 1.0f;
m_RigidTable.Get1NewRigidBody(&pRigid);
pRigid->SetSP( D3DXVECTOR3(1,100,0), D3DXVECTOR3(0,1,0), 70.0f, 30.0f );
pRigid->Initialise( D3DXVECTOR3(1,100,0), 1.0f, 833.3f );
m_Sim.AddRigidBody(pRigid);
m_RigidTable.Get1NewRigidBody(&pRigid);
pRigid->SetSP( D3DXVECTOR3(100,100,50), D3DXVECTOR3(0,0.7f,0.7f), 70.0f, 30.0f );
pRigid->Initialise( D3DXVECTOR3(100,100,50), 1.0f, 833.3f );
pRigid->m_LineVel = D3DXVECTOR3( -10, 0, 0 );
m_Sim.AddRigidBody(pRigid);
break;
case 7: //从本例可看出,刚体可能会出现互相嵌入的现象,这需要修正
m_Sim.m_bAddingGravity = TRUE;
m_Sim.m_bUsingFriction = TRUE;
m_Sim.m_fEpsilon = 0.65f;
m_RigidTable.Get1NewRigidBody(&pRigid);
pRigid->SetSP( D3DXVECTOR3(0,100,0), D3DXVECTOR3(0,1,0), 70.0f, 30.0f );
pRigid->Initialise( D3DXVECTOR3(0,100,0), 100.0f, 83333.3f );
m_Sim.AddRigidBody(pRigid);
m_RigidTable.Get1NewRigidBody(&pRigid);
pRigid->SetSP( D3DXVECTOR3(0,230,0), D3DXVECTOR3(0,1,0), 0, 30.0f );
pRigid->Initialise( D3DXVECTOR3(0,230,0), 20.0f, 7200 );
m_Sim.AddRigidBody(pRigid);
m_RigidTable.Get1NewRigidBody(&pRigid);
pRigid->SetSP( D3DXVECTOR3(300,210,0), D3DXVECTOR3(0,1,0), 0.0f, 30.0f );
pRigid->Initialise( D3DXVECTOR3(300,210,0), 10.0f, 10*360 );
pRigid->m_LineVel = D3DXVECTOR3(-200,0,0);
m_Sim.AddRigidBody(pRigid);
D3DXPlaneFromPointNormal( &plane, &D3DXVECTOR3(0,0,0), &D3DXVECTOR3(0,1,0) );
m_Sim.listPlane.push_back( plane );
break;
case 8: //刚体与平面碰撞的效果,有重力,摩擦力,碰撞系数0.65f
m_Sim.m_bAddingGravity = TRUE;
m_Sim.m_bUsingFriction = TRUE;
m_Sim.m_fEpsilon = 0.65f;
m_RigidTable.Get1NewRigidBody(&pRigid);
pRigid->SetSP( D3DXVECTOR3(110,300,-110), D3DXVECTOR3(0,0.7f,0.7f), 70.0f, 30.0f );
pRigid->Initialise( D3DXVECTOR3(110,300,-110), 1.0f, 833.3f );
m_Sim.AddRigidBody(pRigid);
D3DXPlaneFromPointNormal( &plane, &D3DXVECTOR3(0,0,0), &D3DXVECTOR3(0,1,0) );
m_Sim.listPlane.push_back( plane );
D3DXPlaneFromPointNormal( &plane, &D3DXVECTOR3(0,0,0), &D3DXVECTOR3(0,0.7f,0.7f) );
m_Sim.listPlane.push_back( plane );
break;
}
return S_OK;
}
//-----------------------------------------------------------------------------
// Builds an occlusion volume for the given occluder.
//-----------------------------------------------------------------------------
void SceneManager::BuildOcclusionVolume( SceneOccluder *occluder, D3DXVECTOR3 viewer )
{
// Create a list of edges for the occluder's silhouette.
LinkedList< Edge > *edges = new LinkedList< Edge >;
// Go through all the faces in the occluder's mesh.
for( unsigned long f = 0; f < occluder->totalFaces; f++ )
{
// Get the indices of this face.
unsigned short index0 = occluder->indices[3 * f + 0];
unsigned short index1 = occluder->indices[3 * f + 1];
unsigned short index2 = occluder->indices[3 * f + 2];
// Find the angle between the face's normal and the vector point from
// viewer's position to the face's position. If the angle is less than
// 0, then the face is visible to the viewer.
if( D3DXVec3Dot( &occluder->vertices[index0].normal, &( occluder->vertices[index0].translation - viewer ) ) < 0.0f )
{
// Check if the list of edges is empty.
if( edges->GetTotalElements() == 0 )
{
// Add all the edges for this face.
edges->Add( new Edge( &occluder->vertices[index0], &occluder->vertices[index1] ) );
edges->Add( new Edge( &occluder->vertices[index1], &occluder->vertices[index2] ) );
edges->Add( new Edge( &occluder->vertices[index2], &occluder->vertices[index0] ) );
}
else
{
Edge *found0 = NULL;
Edge *found1 = NULL;
Edge *found2 = NULL;
// Iterate through the list of edges.
edges->Iterate( true );
while( edges->Iterate() != NULL )
{
// Check if the first edge of this face already exists.
if( ( edges->GetCurrent()->vertex0->translation == occluder->vertices[index0].translation && edges->GetCurrent()->vertex1->translation == occluder->vertices[index1].translation ) ||
( edges->GetCurrent()->vertex0->translation == occluder->vertices[index1].translation && edges->GetCurrent()->vertex1->translation == occluder->vertices[index0].translation ) )
found0 = edges->GetCurrent();
// Check if the second edge of this face already exists.
if( ( edges->GetCurrent()->vertex0->translation == occluder->vertices[index1].translation && edges->GetCurrent()->vertex1->translation == occluder->vertices[index2].translation ) ||
( edges->GetCurrent()->vertex0->translation == occluder->vertices[index2].translation && edges->GetCurrent()->vertex1->translation == occluder->vertices[index1].translation ) )
found1 = edges->GetCurrent();
// Check if the third edge of this face already exists.
if( ( edges->GetCurrent()->vertex0->translation == occluder->vertices[index2].translation && edges->GetCurrent()->vertex1->translation == occluder->vertices[index0].translation ) ||
( edges->GetCurrent()->vertex0->translation == occluder->vertices[index0].translation && edges->GetCurrent()->vertex1->translation == occluder->vertices[index2].translation ) )
found2 = edges->GetCurrent();
}
// If the first edge was found, remove it. Otherwise add it.
if( found0 != NULL )
edges->Remove( &found0 );
else
edges->Add( new Edge( &occluder->vertices[index0], &occluder->vertices[index1] ) );
// If the second edge was found, remove it. Otherwise add it.
if( found1 != NULL )
edges->Remove( &found1 );
else
edges->Add( new Edge( &occluder->vertices[index1], &occluder->vertices[index2] ) );
// If the thrid edge was found, remove it. Otherwise add it.
if( found2 != NULL )
edges->Remove( &found2 );
else
edges->Add( new Edge( &occluder->vertices[index2], &occluder->vertices[index0] ) );
}
}
}
// Empty the occluder's list of planes.
occluder->planes->Empty();
// Create the front cap plane.
D3DXPLANE *plane = new D3DXPLANE;
D3DXPlaneFromPointNormal( plane, &occluder->translation, &( occluder->translation - viewer ) );
occluder->planes->Add( plane );
// Iterate through the list of edges.
edges->Iterate( true );
while( edges->Iterate() != NULL )
{
// Get the position of the vertices in the edge.
D3DXVECTOR3 vertex1 = edges->GetCurrent()->vertex0->translation;
D3DXVECTOR3 vertex2 = edges->GetCurrent()->vertex1->translation;
// Calculate the position of the thrid vertex for creating the plane.
D3DXVECTOR3 dir = vertex1 - viewer;
D3DXVec3Normalize( &dir, &dir );
D3DXVECTOR3 vertex3 = vertex1 + dir;
// Create a plane from this edge.
plane = new D3DXPLANE;
D3DXPlaneFromPoints( plane, &vertex1, &vertex2, &vertex3 );
occluder->planes->Add( plane );
}
// Destroy the list of edges.
SAFE_DELETE( edges );
}
/**
* CABT::splitTriangle
* @date Modified Apr 18, 2006
*/
void CABT::splitTriangle(CMesh::SVertex* pVertex, SPlane& oPlane, std::vector<CMesh::SVertex>& vFront, std::vector<CMesh::SVertex>& vBack)
{
unsigned int nResA, nResB;
CMesh::SVertex vA, vB;
vA = pVertex[2];
nResA = getPointClassification(vA.vPosition, oPlane);
std::vector<CMesh::SVertex> vFrontFaces, vBackFaces;
// Check triangle edges
for(unsigned int i = 0; i < 3; ++i)
{
// Get the next triangle point
vB = pVertex[i];
nResB = getPointClassification(vB.vPosition, oPlane);
if(nResB == PT_FRONT)
{
if(nResA == PT_BACK)
{
// Find intersection
D3DXVECTOR3 vIntersect;
D3DXPLANE oDXPlane;
D3DXPlaneIntersectLine(&vIntersect, D3DXPlaneFromPointNormal(&oDXPlane, &oPlane.point, &oPlane.normal), &vA.vPosition, &vB.vPosition);
// Calculate interpolation factor
D3DXVECTOR3 vNew, vWhole;
D3DXVec3Subtract(&vNew, &vA.vPosition, &vIntersect);
D3DXVec3Subtract(&vWhole, &vA.vPosition, &vB.vPosition);
float fFactor = D3DXVec3Length(&vNew) / D3DXVec3Length(&vWhole);
// Interpolate vertex data.
CMesh::SVertex vNewVertex;
D3DXCOLOR oColor;
vNewVertex.vPosition = vIntersect;
D3DXVec3Lerp(&vNewVertex.vNormal, &vA.vNormal, &vB.vNormal, fFactor);
D3DXVec2Lerp(&vNewVertex.vTexCoord0, &vA.vTexCoord0, &vB.vTexCoord0, fFactor);
D3DXColorLerp(&oColor, &D3DXCOLOR(vA.Color), &D3DXCOLOR(vB.Color), fFactor);
vNewVertex.Color = oColor;
vFrontFaces.push_back(vNewVertex);
vBackFaces.push_back(vNewVertex);
}
vFrontFaces.push_back(vB);
}
else if(nResB == PT_BACK)
{
if(nResA == PT_FRONT)
{
// Find intersection
D3DXVECTOR3 vIntersect;
D3DXPLANE oDXPlane;
D3DXPlaneIntersectLine(&vIntersect, D3DXPlaneFromPointNormal(&oDXPlane, &oPlane.point, &oPlane.normal), &vA.vPosition, &vB.vPosition);
// Calculate interpolation factor
D3DXVECTOR3 vNew, vWhole;
D3DXVec3Subtract(&vNew, &vA.vPosition, &vIntersect);
D3DXVec3Subtract(&vWhole, &vA.vPosition, &vB.vPosition);
float fFactor = D3DXVec3Length(&vNew) / D3DXVec3Length(&vWhole);
// Interpolate vertex data.
CMesh::SVertex vNewVertex;
D3DXCOLOR oColor;
vNewVertex.vPosition = vIntersect;
D3DXVec3Lerp(&vNewVertex.vNormal, &vA.vNormal, &vB.vNormal, fFactor);
D3DXVec2Lerp(&vNewVertex.vTexCoord0, &vA.vTexCoord0, &vB.vTexCoord0, fFactor);
D3DXColorLerp(&oColor, &D3DXCOLOR(vA.Color), &D3DXCOLOR(vB.Color), fFactor);
vNewVertex.Color = oColor;
vFrontFaces.push_back(vNewVertex);
vBackFaces.push_back(vNewVertex);
}
vBackFaces.push_back(vB);
}
else
{
vFrontFaces.push_back(vB);
vBackFaces.push_back(vB);
}
// Next Edge
vA = vB;
nResA = nResB;
}
// Make a triangle list out of the the vertices created.
for(unsigned int i = 1; i < vFrontFaces.size() - 1; ++i)
{
vFront.push_back(vFrontFaces[0]);
vFront.push_back(vFrontFaces[i]);
vFront.push_back(vFrontFaces[i+1]);
}
for(unsigned int i = 1; i < vBackFaces.size() - 1; ++i)
{
vBack.push_back(vBackFaces[0]);
vBack.push_back(vBackFaces[i]);
vBack.push_back(vBackFaces[i+1]);
}
}
