Air::U1 MeshEntity::RayCast( const Ray& ray ,float* pOutDistance)
{
#if 1
if(!GetWorldBoundingBox().RayCast(ray.GetOrigin(),ray.GetDirection())){//.Intersect(GetWorldBoundingBox())){
return false;
}
#endif
Matrix matWorld = *GetWorldMatrix();
Matrix matWorldInv = matWorld;
matWorldInv.Inverse();
Float3 vStart = ray.m_vStart;
Float3 vLookAt = vStart + ray.m_vDirection;
vStart = matWorldInv*vStart;
vLookAt = matWorldInv*vLookAt;
Float3 vDir = (vLookAt - vStart);
vDir.Normalize();
Ray objSpaceRay(vStart,vDir);
float fDistance = 999999.0f;
U1 bHit = m_pMesh->RayCast(objSpaceRay,&fDistance);
if(bHit && pOutDistance!=NULL){
Float3 vObjSpaceHitPostion = vStart + vDir*fDistance;
Float3 vWorldSpaceHiPosition = matWorld*vObjSpaceHitPostion;
*pOutDistance = (vWorldSpaceHiPosition - ray.m_vStart).Length();
}
return bHit;
}
Air::U1 Actor::Move(float fTimeDelta)
{
if(m_MoveState==enAMS_NoMove){
return false;
}
Float3 vMoveDir = m_vMoveDir;
vMoveDir.y=0.0f;
vMoveDir.Normalize();
Float3 vOldPos = m_pNode->GetPosition();
Float3 vCurrentPos = m_pNode->GetPosition();
//vCurrentPos += vMoveDir*fSensitivity;
Float3 vNewVelocity = vMoveDir*m_fMoveVelocity;
vNewVelocity.y = m_vMoveDir.y;
PhysicsSystem::GetSingleton()->Silumation(vCurrentPos,0.5,1,vNewVelocity,fTimeDelta);
m_vMoveDir.y = vNewVelocity.y;
if(vCurrentPos.y<-1){
vCurrentPos.y=1;
m_vMoveDir.y = 0;
}
m_pNode->SetPosition(vCurrentPos);
return true;
}
Air::Ray Frustum::BuildRay( Real x,Real y )
{
#if 0
POINT point;
point.x = x;
point.y = y;
Common::Matrix mInverseView = m_matView;
mInverseView.Inverse();
// Compute the vector of the pick ray in screen space
Float3 v;
v.x = ( ( ( 2.0f * point.x ) / m_iScreenWidth ) - 1 ) /m_matProj.m00;
v.y = -( ( ( 2.0f * point.y ) / m_iScreenHeight ) - 1 ) /m_matProj.m11;
//如果是右手坐标系 Z必须为-1 左手坐标系为1 切需注意
v.z = 1;//-m_ShaderParam.m_matProj[3][2];
Ray ray;
// Transform the screen space pick ray into 3D space
ray.m_vDirection.x = v.x * mInverseView.m00 + v.y * mInverseView.m10 + v.z * mInverseView.m20;
ray.m_vDirection.y = v.x * mInverseView.m01 + v.y * mInverseView.m11 + v.z * mInverseView.m21;
ray.m_vDirection.z = v.x * mInverseView.m02 + v.y * mInverseView.m12 + v.z * mInverseView.m22;
// //origin = m_vCurrentPosition;
ray.m_vStart = Float3(mInverseView.m30,mInverseView.m31,mInverseView.m32);
//Ray ray;
ray.m_vDirection.Normalize();
return ray;
#else
Matrix inverseVP = m_matViewProj;
inverseVP.Inverse();
Real nx = (2.0f * x) - 1.0f;
Real ny = 1.0f - (2.0f * y);
// Use midPoint rather than far point to avoid issues with infinite projection
Float3 midPoint (nx, ny, 0.0f);
// Get ray origin and ray target on near plane in world space
Float3 rayTarget;
rayTarget = inverseVP * midPoint;
Float3 rayDirection = rayTarget - GetPosition();
rayDirection.Normalize();
return Ray(GetPosition(),rayDirection);
#endif
}
void MeshGroup::_genMesh(const Array<Mesh *> & arr, int first, int last, bool hasLightingColor)
{
MeshSourcePtr source = arr[0]->GetSource();
Mesh * mesh = new Mesh;
for (int i = 0; i < source->GetMeshBufferCount(); ++i)
{
SubMesh * submesh = mesh->NewSubMesh();
VertexBufferPtr srcVB = source->GetMeshBuffer(i)->GetRenderOp()->vertexBuffers[0];
IndexBufferPtr srcIB = source->GetMeshBuffer(i)->GetRenderOp()->indexBuffer;
int p_offset = source->GetMeshBuffer(i)->GetRenderOp()->vertexDeclarations[0].GetElementOffset(eVertexSemantic::POSITION);
int n_offset = source->GetMeshBuffer(i)->GetRenderOp()->vertexDeclarations[0].GetElementOffset(eVertexSemantic::NORMAL);
int stride = srcVB->GetStride();
VertexBufferPtr vb = HWBufferManager::Instance()->NewVertexBuffer(stride, srcVB->GetCount() * (last - first));
const char * v_src = (const char *)srcVB->Lock(eLockFlag::READ);
char * v_dest = (char *)vb->Lock(eLockFlag::WRITE);
for (int j = first; j < last; ++j)
{
const Mat4 & worldTM = arr[j]->GetWorldTM();
bool hasScale = arr[j]->GetWorldScale() != Float3(1, 1, 1);
for (int k = 0; k < srcVB->GetCount(); ++k)
{
memcpy(v_dest, v_src, stride);
Float3 * position = (Float3 *)(v_dest + p_offset);
position->TransformA(worldTM);
if (n_offset != -1)
{
Float3 * normal = (Float3 *)(v_dest + n_offset);
normal->TransformN(worldTM);
if (hasScale)
{
normal->Normalize();
}
}
v_dest += stride;
v_src += stride;
}
}
vb->Unlock();
srcVB->Unlock();
IndexBufferPtr ib = HWBufferManager::Instance()->NewIndexBuffer(srcIB->GetCount() * (last - first));
int startVertex = 0;
const short * i_src = (const short *)srcIB->Lock(eLockFlag::READ);
char * i_dest = (char *)ib->Lock(eLockFlag::WRITE);
for (int j = first; j < last; ++j)
{
for (int k = 0; k < srcIB->GetCount(); ++k)
{
*i_dest++ = (*i_src++) + startVertex;
}
startVertex += srcVB->GetCount();
}
ib->Unlock();
srcIB->Unlock();
submesh->GetRenderOp()->vertexDeclarations[0] = source->GetMeshBuffer(i)->GetRenderOp()->vertexDeclarations[0];
submesh->GetRenderOp()->vertexBuffers[0] = vb;
submesh->GetRenderOp()->indexBuffer = ib;
submesh->GetRenderOp()->primCount = ib->GetCount() / 3;
submesh->GetRenderOp()->primType = ePrimType::TRIANGLE_LIST;
if (hasLightingColor)
{
int count = submesh->GetRenderOp()->vertexBuffers[0]->GetCount();
submesh->GetRenderOp()->vertexDeclarations[LIGHTING_COLOR_STREAM].AddElement(eVertexSemantic::LIGHTING_COLOR, eVertexType::UBYTE4);
submesh->GetRenderOp()->vertexBuffers[LIGHTING_COLOR_STREAM] = HWBufferManager::Instance()->NewVertexBuffer(4, count);
Array<Rgba32> lightColors;
Rgba32 * data = (Rgba32 *)submesh->GetRenderOp()->vertexBuffers[LIGHTING_COLOR_STREAM]->Lock(eLockFlag::WRITE);
for (int j = first; j < last; ++j)
{
arr[j]->GetLightingColor(lightColors);
d_assert (lightColors.Size() > 0);
memcpy(data, &lightColors[0], 4 * count);
startVertex += count;
lightColors.Clear();
}
submesh->GetRenderOp()->vertexBuffers[LIGHTING_COLOR_STREAM]->Unlock();
}
*submesh->GetMaterial() = *source->GetMeshBuffer(i)->GetMaterial();
submesh->SetMeshShader(source->GetMeshBuffer(i)->GetShader());
}
mesh->SetSLMode(hasLightingColor ? eStaticLightingMode::LIGHTING_COLOR : eStaticLightingMode::NONE);
mMeshes.PushBack(mesh);
}
Air::Engine::enumMouseRayCastType ObjectController::ChangeType( const Float3& vStart,const Float3& vDir )
{
Float44 matWorldInv = m_WorldMatrix;
matWorldInv.Inverse();
Float3 vNewStart = matWorldInv*vStart;
Float3 vNewDir = matWorldInv*(vStart+vDir) - vNewStart;
vNewDir.Normalize();
float fDistance = vStart.Distance(m_WorldMatrix.GetPosition())*0.1;
//if(m_WorldBound.RayCast(vStart,vDir))
{
switch(m_ControlMode){
case eMCM_Select:{
}break;
case eMCM_Move:
case eMCM_Scale:{
BoundingBox AXIS[3];
AXIS[0].vMin = Float3(0,-0.05,-0.05)*fDistance;
AXIS[0].vMax = Float3(1,0.05,0.05)*fDistance;
AXIS[1].vMin = Float3(-0.05,0,-0.05)*fDistance;
AXIS[1].vMax = Float3(0.05,1,0.05)*fDistance;
AXIS[2].vMin = Float3(-0.05,-0.05,0)*fDistance;
AXIS[2].vMax = Float3(0.05,0.05,1)*fDistance;
for(int i=0;i<3;i++){
if(AXIS[i].RayCast(vNewStart,vNewDir)){
m_RayCastType = enumMouseRayCastType(i+1);
#if 0
char str[64];
sprintf_s(str,"%d\n",m_RayCastType);
OutputDebugStringA(str);
#endif
break;
}else{
m_RayCastType = eMRCT_None;
}
}
}break;
case eMCM_Rotate:{
BoundingBox AXIS[3];
AXIS[0].vMin = Float3(-0.01,-1,-1)*fDistance;
AXIS[0].vMax = Float3(0.01,1,1)*fDistance;
AXIS[1].vMin = Float3(-1,-0.01,-1)*fDistance;
AXIS[1].vMax = Float3(1,0.01,1)*fDistance;
AXIS[2].vMin = Float3(-1,-1,-0.01)*fDistance;
AXIS[2].vMax = Float3(1,1,0.01)*fDistance;
float fDis[3]={10000,10000,10000};
bool bHit = false;
for(int i=0;i<3;i++){
if(AXIS[i].RayCast(vNewStart,vNewDir,&fDis[i],NULL)){
Float3 hitPos = vNewDir*fDis[i]+vNewStart;
float dis = (hitPos.Distance(Float3(0,0,0)))/fDistance;
if(dis < 1.0 && dis > 0.8f){
bHit = true;
}else{
fDis[i] = 10000.0f;
}
}
}
if(bHit){
m_RayCastType = eMRCT_X;
for(int i=1;i<3;i++){
if(fDis[i] < fDis[0]){
fDis[0] = fDis[i];
m_RayCastType = enumMouseRayCastType(i+1);
}
}
#if 0
char str[64];
sprintf_s(str,"%d\n",m_RayCastType);
OutputDebugStringA(str);
#endif
}else{
m_RayCastType = eMRCT_None;
}
}break;
}
}
return m_RayCastType;
}
void PS_Billboard::_getBillboardXYAxis(Float3 & xAxis, Float3 & yAxis, const Float3 & pos, const Float3 & dir)
{
int type = mParent->GetBillboardType();
bool facing = mParent->IsAccurateFacing();
switch (type)
{
case PS_BillboardType::POINT:
if (facing)
{
Float3 vCamDir = pos - mCamPos;
vCamDir.Normalize();
yAxis = mCamYAxis;
xAxis = Float3::Cross(yAxis, vCamDir);
xAxis.Normalize();
}
else
{
xAxis = mCamXAxis;
yAxis = mCamYAxis;
}
break;
case PS_BillboardType::ORIENTED:
if (facing)
{
Float3 vCamDir = pos - mCamPos;
vCamDir.Normalize();
yAxis = dir;
xAxis = Float3::Cross(yAxis, vCamDir);
xAxis.Normalize();
}
else
{
yAxis = dir;
xAxis = Float3::Cross(yAxis, mCamZAxis);
xAxis.Normalize();
}
break;
case PS_BillboardType::ORIENTED_COMMON:
if (facing)
{
Float3 vCamDir = pos - mCamPos;
vCamDir.Normalize();
yAxis = mCommonDir;
xAxis = Float3::Cross(yAxis, vCamDir);
xAxis.Normalize();
}
else
{
yAxis = mCommonDir;
xAxis = Float3::Cross(yAxis, mCamZAxis);
xAxis.Normalize();
}
break;
case PS_BillboardType::PERPENDICULAR:
{
xAxis = Float3::Cross(mCommonUp, dir);
yAxis = Float3::Cross(dir, xAxis);
xAxis.Normalize();
yAxis.Normalize();
}
break;
case PS_BillboardType::PERPENDICULAR_COMMON:
{
xAxis = Float3::Cross(mCommonUp, mCommonDir);
yAxis = mCommonDir;
xAxis.Normalize();
}
break;
}
}
