void gr_GetEulerVectors(
const LTVector vAngles,
LTVector &vRight,
LTVector &vUp,
LTVector &vForward)
{
LTMatrix mTemp;
gr_SetupMatrixEuler(vAngles, mTemp.m);
mTemp.GetBasisVectors(&vRight, &vUp, &vForward);
}
bool CTrackedNodeMgr::GetOrientationSpace( HTRACKEDNODE ID, LTVector& vRight,
LTVector& vUp,
LTVector& vForward)
{
if(!CheckValidity(ID))
return false;
//read in the vectors
LTMatrix mTargetTransform = ID->m_mInvTargetTransform;
mTargetTransform.Transpose();
mTargetTransform.GetBasisVectors(&vRight, &vUp, &vForward);
return true;
}
LTBOOL gr_IntersectPlanes(
LTPlane &plane0,
LTPlane &plane1,
LTPlane &plane2,
LTVector &vOut)
{
LTMatrix mPlanes;
/*
Math behind this:
Plane equation is Ax + By + Cz - D = 0
Standard matrix equation Ax = b.
So stick the plane equations into the A matrix:
A B C -D (from plane 0)
A B C -D (from plane 1)
A B C -D (from plane 2)
0 0 0 1
then the b vector is:
[0 0 0 1]
and we're solving for the x vector so:
~AAx = ~Ab
x = ~Ab
*/
mPlanes.Init(
plane0.m_Normal[0], plane0.m_Normal[1], plane0.m_Normal[2], -plane0.m_Dist,
plane1.m_Normal[0], plane1.m_Normal[1], plane1.m_Normal[2], -plane1.m_Dist,
plane2.m_Normal[0], plane2.m_Normal[1], plane2.m_Normal[2], -plane2.m_Dist,
0.0f, 0.0f, 0.0f, 1.0f);
// If we can't invert the matrix, then two or more planes are equal.
if(!mPlanes.Inverse())
return LTFALSE;
// Since our b vector is all zeros, we don't need to do a full matrix multiply.
// vOut = mPlaneNormal * vPlaneDist;
vOut.Init(
mPlanes.m[0][3],
mPlanes.m[1][3],
mPlanes.m[2][3]);
vOut *= (1.0f / mPlanes.m[3][3]);
return LTTRUE;
}
bool d3d_InitFrustum(ViewParams *pParams,
float xFov, float yFov, float nearZ, float farZ,
float screenMinX, float screenMinY, float screenMaxX, float screenMaxY,
const LTVector *pPos, const LTRotation *pRotation, ViewParams::ERenderMode eMode)
{
LTMatrix mat;
quat_ConvertToMatrix((float*)pRotation, mat.m);
mat.SetTranslation(*pPos);
ViewBoxDef viewBox;
d3d_InitViewBox(&viewBox, nearZ, farZ, xFov, yFov);
// Setup initial states and stuff.
return d3d_InitFrustum2(pParams, &viewBox,
screenMinX, screenMinY, screenMaxX, screenMaxY, &mat, LTVector(1.0f, 1.0f, 1.0f), eMode);
}
//Given a stage to install it on, it will grab the global world envmap transform
//and apply it into the texture transform on that stage
void d3d_SetEnvMapTransform(RTexture* pEnvMap, uint32 nStage)
{
//determine how many times the texture will be tiling.
float fScale = g_CV_EnvScale;
//now see if it is okay to divide by it, since that will provide proper scaling
if(fabs(fScale) > 0.001f)
fScale = -0.5f / fScale;
//now apply our custom scale
LTMatrix mScale;
if(pEnvMap->IsCubeMap())
{
PD3DDEVICE->SetTextureStageState(nStage, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_COUNT3);
mScale = g_ViewParams.m_mWorldEnvMap;
}
else
{
PD3DDEVICE->SetTextureStageState(nStage, D3DTSS_TEXTURETRANSFORMFLAGS, D3DTTFF_COUNT2);
mScale.Init(fScale, 0.0f, 0.0f, 0.5f,
0.0f, fScale, 0.0f, 0.5f,
0.0f, 0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f);
//now multiply the two together to get our result
mScale = mScale * g_ViewParams.m_mWorldEnvMap;
}
LTMatrix& m = mScale;
//now setup the D3D version of our matrix
D3DMATRIX mat;
mat._11 = m.m[0][0]; mat._12 = m.m[1][0]; mat._13 = m.m[2][0]; mat._14 = m.m[3][0];
mat._21 = m.m[0][1]; mat._22 = m.m[1][1]; mat._23 = m.m[2][1]; mat._24 = m.m[3][1];
mat._31 = m.m[0][2]; mat._32 = m.m[1][2]; mat._33 = m.m[2][2]; mat._34 = m.m[3][2];
mat._41 = m.m[0][3]; mat._42 = m.m[1][3]; mat._43 = m.m[2][3]; mat._44 = m.m[3][3];
//and install the transform
PD3DDEVICE->SetTransform((D3DTRANSFORMSTATETYPE)(D3DTS_TEXTURE0 + nStage), &mat);
PD3DDEVICE->SetTextureStageState(nStage, D3DTSS_TEXCOORDINDEX, D3DTSS_TCI_CAMERASPACEREFLECTIONVECTOR | nStage);
}
static void GeneratePolyGridFresnelAlphaAndCamera(const LTVector& vViewPos, CPolyGridBumpVertex* pVerts, LTPolyGrid* pGrid, uint32 nNumVerts)
{
//we need to transform the camera position into our view space
LTMatrix mInvWorldTrans;
mInvWorldTrans.Identity();
mInvWorldTrans.SetTranslation(-pGrid->GetPos());
LTMatrix mOrientation;
pGrid->m_Rotation.ConvertToMatrix(mOrientation);
mInvWorldTrans = mOrientation * mInvWorldTrans;
LTVector vCameraPos = mInvWorldTrans * vViewPos;
//now generate the internals of the polygrid
CPolyGridBumpVertex* pCurrVert = pVerts;
CPolyGridBumpVertex* pEnd = pCurrVert + nNumVerts;
//determine the fresnel table that we are going to be using
const CFresnelTable* pTable = g_FresnelCache.GetTable(LTMAX(1.0003f, pGrid->m_fFresnelVolumeIOR), pGrid->m_fBaseReflection);
//use a vector from the camera to the center of the grid to base our approximations off of. The further
//we get to the edges the more likely this error will be, but it is better than another sqrt per vert
LTVector vToPGPt;
while(pCurrVert < pEnd)
{
//the correct but slow way, so only do it every once in a while
//if((pCurrVert - g_TriVertList) % 4 == 0)
{
vToPGPt = vCameraPos - pCurrVert->m_Vec;
vToPGPt.Normalize();
}
pCurrVert->m_fEyeX = vToPGPt.x;
pCurrVert->m_fEyeY = vToPGPt.y;
pCurrVert->m_fEyeZ = vToPGPt.z;
pCurrVert->m_nColor |= pTable->GetValue(vToPGPt.Dot(pCurrVert->m_vBasisUp));
++pCurrVert;
}
}
// ------------------------------------------------------------------------
// Draw
// use gl to draw the model
// ------------------------------------------------------------------------
void CRenderWnd::Draw()
{
static LTMatrix IdMat;
IdMat.Identity();
DrawStruct *pStruct;
pStruct = &m_DrawStruct;
// Setup with 2 lights.
pStruct->m_ViewerPos = m_Camera.m_Position;
pStruct->m_LookAt = m_Camera.m_LookAt;
pStruct->m_LightPositions[0] = m_LightLocators[0].m_Location;
pStruct->m_LightPositions[1] = m_LightLocators[1].m_Location;
pStruct->m_LightColors[0].Init(255.0f, 255.0f, 255.0f);
pStruct->m_LightColors[1].Init(128.0f, 128.0f, 128.0f);
pStruct->m_nLights = 2;
SetupViewingParameters((GLMContext*)m_hContext, pStruct );
DrawWorldCoordSys();
// if the model exists
if (GetModel() )
{
pStruct->m_SelectedPieces = m_SelectedPieces.GetArray();
pStruct->m_SelectedNodes = m_SelectedNodes.GetArray();
pStruct->m_bCalcRadius = m_bCalcRadius;
pStruct->m_fModelRadius = 0.0f;
pStruct->m_bCalcAndDraw = m_bCalcAndDraw;
DrawModel (m_hContext, pStruct);
m_fCurRadius = pStruct->m_fModelRadius;
}
SwapBuffers( (( GLMContext*)m_hContext)->m_hDC);
}
void CLoadedPrefab::CalcDims()
{
LTVector vMin, vMax;
vMin.Init(FLT_MAX, FLT_MAX, FLT_MAX);
vMax.Init(FLT_MIN, FLT_MIN, FLT_MIN);
LTMatrix mIdent;
mIdent.Identity();
RecurseAndGrowDims(m_cRegion.GetRootNode(), vMin, vMax, mIdent);
// If one of the members didn't get modified, none of them did...
if (vMin.x == FLT_MAX)
{
ASSERT(vMin.y == FLT_MAX && vMin.z == FLT_MAX &&
vMax.x == FLT_MIN && vMax.y == FLT_MIN && vMax.y == FLT_MIN);
// Treat it as an empty set (Which it probably is... All null nodes or something..)
vMin.Init();
vMax.Init();
}
m_vMin = vMin;
m_vMax = vMax;
}
void CTransitionAggregate::Save( ILTMessage_Write *pMsg, uint32 dwSaveFlags )
{
if( !pMsg ) return;
SAVE_HOBJECT( m_hObject );
// The rest is dependent on the save type...
if( dwSaveFlags != LOAD_TRANSITION ) return;
HOBJECT hTransArea = g_pTransMgr->GetTransitionArea();
if( !hTransArea ) return;
TransitionArea *pTransArea = (TransitionArea*)g_pLTServer->HandleToObject( hTransArea );
if( !pTransArea ) return;
LTransform tfLocal;
LTransform tfObjectWorld;
LTransform const& tfTransAreaWorld = pTransArea->GetWorldTransform( );
LTMatrix mInverseRot;
tfTransAreaWorld.m_Rot.ConvertToMatrix( mInverseRot );
mInverseRot.Inverse( );
g_pLTServer->GetObjectPos( m_hObject, &tfObjectWorld.m_Pos );
g_pLTServer->GetObjectRotation( m_hObject, &tfObjectWorld.m_Rot );
LTVector vVel;
g_pPhysicsLT->GetVelocity( m_hObject, &vVel );
tfLocal.m_Pos = mInverseRot * ( tfObjectWorld.m_Pos - tfTransAreaWorld.m_Pos );
tfLocal.m_Rot = tfObjectWorld.m_Rot * ~tfTransAreaWorld.m_Rot;
LTVector vRelVel = mInverseRot * vVel;
SAVE_VECTOR( tfLocal.m_Pos );
SAVE_ROTATION( tfLocal.m_Rot );
SAVE_VECTOR( vRelVel );
}
/* Construct matrix from Euler angles (in radians). */
void Eul_ToMatrix(EulerAngles ea, LTMatrix &M)
{
float ti, tj, th, ci, cj, ch, si, sj, sh, cc, cs, sc, ss;
int i,j,k,h,n,s,f;
EulGetOrd((int)ea.w,i,j,k,h,n,s,f);
if (f==EulFrmR) {
float t = ea.x;
ea.x = ea.z;
ea.z = t;
}
if (n==EulParOdd) {
ea.x = -ea.x;
ea.y = -ea.y;
ea.z = -ea.z;
}
ti = ea.x;
tj = ea.y;
th = ea.z;
ci = (float)cos(ti);
cj = (float)cos(tj);
ch = (float)cos(th);
si = (float)sin(ti);
sj = (float)sin(tj);
sh = (float)sin(th);
cc = ci*ch;
cs = ci*sh;
sc = si*ch;
ss = si*sh;
if (s==EulRepYes) {
M.El(i,i) = cj;
M.El(i,j) = sj*si;
M.El(i,k) = sj*ci;
M.El(j,i) = sj*sh;
M.El(j,j) = -cj*ss+cc;
M.El(j,k) = -cj*cs-sc;
M.El(k,i) = -sj*ch;
M.El(k,j) = cj*sc+cs;
M.El(k,k) = cj*cc-ss;
} else {
M.El(i,i) = cj*ch;
M.El(i,j) = sj*sc-cs;
M.El(i,k) = sj*cc+ss;
M.El(j,i) = cj*sh;
M.El(j,j) = sj*ss+cc;
M.El(j,k) = sj*cs-sc;
M.El(k,i) = -sj;
M.El(k,j) = cj*si;
M.El(k,k) = cj*ci;
}
M.El(EulW,EulX)=M.El(EulW,EulY)=M.El(EulW,EulZ)=M.El(EulX,EulW)=M.El(EulY,EulW)=M.El(EulZ,EulW)=0.0;
M.El(EulW,EulW)=1.0;
}
/* Convert quaternion to Euler angles (in radians). */
EulerAngles Eul_FromQuat(LTRotation const& q, int order)
{
LTMatrix M;
float Nq = q[0]*q[0]+q[1]*q[1]+q[2]*q[2]+q[3]*q[3];
float s = (Nq > 0.0f) ? (2.0f / Nq) : 0.0f;
float xs = q[0]*s, ys = q[1]*s, zs = q[2]*s;
float wx = q[3]*xs, wy = q[3]*ys, wz = q[3]*zs;
float xx = q[0]*xs, xy = q[0]*ys, xz = q[0]*zs;
float yy = q[1]*ys, yz = q[1]*zs, zz = q[2]*zs;
M.El(EulX,EulX) = 1.0f - (yy + zz);
M.El(EulX,EulY) = xy - wz;
M.El(EulX,EulZ) = xz + wy;
M.El(EulY,EulX) = xy + wz;
M.El(EulY,EulY) = 1.0f - (xx + zz);
M.El(EulY,EulZ) = yz - wx;
M.El(EulZ,EulX) = xz - wy;
M.El(EulZ,EulY) = yz + wx;
M.El(EulZ,EulZ) = 1.0f - (xx + yy);
M.El(EulW,EulX)=M.El(EulW,EulY)=M.El(EulW,EulZ)=M.El(EulX,EulW)=M.El(EulY,EulW)=M.El(EulZ,EulW)=0.0;
M.El(EulW,EulW)=1.0f;
return (Eul_FromMatrix(M, order));
}
/* Convert matrix to Euler angles (in radians). */
EulerAngles Eul_FromMatrix(LTMatrix& M, int order)
{
EulerAngles ea;
int i,j,k,h,n,s,f;
EulGetOrd(order,i,j,k,h,n,s,f);
if (s==EulRepYes) {
float sy = (float)sqrt(M.El(i,j)*M.El(i,j) + M.El(i,k)*M.El(i,k));
if (sy > 16*FLT_EPSILON) {
ea.x = (float)atan2(M.El(i,j), M.El(i,k));
ea.y = (float)atan2(sy, M.El(i,i));
ea.z = (float)atan2(M.El(j,i), -M.El(k,i));
} else {
ea.x = (float)atan2(-M.El(j,k), M.El(j,j));
ea.y = (float)atan2(sy, M.El(i,i));
ea.z = 0;
}
} else {
float cy = (float)sqrt(M.El(i,i)*M.El(i,i) + M.El(j,i)*M.El(j,i));
if (cy > 16*FLT_EPSILON) {
ea.x = (float)atan2(M.El(k,j), M.El(k,k));
ea.y = (float)atan2(-M.El(k,i), cy);
ea.z = (float)atan2(M.El(j,i), M.El(i,i));
} else {
ea.x = (float)atan2(-M.El(j,k), M.El(j,j));
ea.y = (float)atan2(-M.El(k,i), cy);
ea.z = 0;
}
}
if (n==EulParOdd) {
ea.x = -ea.x;
ea.y = - ea.y;
ea.z = -ea.z;
}
if (f==EulFrmR) {
float t = ea.x;
ea.x = ea.z;
ea.z = t;
}
ea.w = (float)order;
return (ea);
}
static void d3d_DrawRotatableSprite(const ViewParams& Params, SpriteInstance *pInstance, SharedTexture *pShared)
{
if(!d3d_SetTexture(pShared, 0, eFS_SpriteTexMemory))
return;
float fWidth = (float)((RTexture*)pShared->m_pRenderData)->GetBaseWidth();
float fHeight = (float)((RTexture*)pShared->m_pRenderData)->GetBaseHeight();
//cache the object position
LTVector vPos = pInstance->GetPos();
LTMatrix mRotation;
d3d_SetupTransformation(&vPos, (float*)&pInstance->m_Rotation, &pInstance->m_Scale, &mRotation);
//get our basis vectors
LTVector vRight, vUp, vForward;
mRotation.GetBasisVectors(&vRight, &vUp, &vForward);
//scale the vectors to be the appropriate size
vRight *= fWidth;
vUp *= fHeight;
// Setup the points.
RGBColor Color;
d3d_GetSpriteColor(pInstance, &Color);
uint32 nColor = Color.color;
CSpriteVertex SpriteVerts[4];
SpriteVerts[0].SetupVert(vPos + vUp - vRight, nColor, 0.0f, 0.0f);
SpriteVerts[1].SetupVert(vPos + vUp + vRight, nColor, 1.0f, 0.0f);
SpriteVerts[2].SetupVert(vPos + vRight - vUp, nColor, 1.0f, 1.0f);
SpriteVerts[3].SetupVert(vPos - vRight - vUp, nColor, 0.0f, 1.0f);
//figure out our final vertices to use
CSpriteVertex *pPoints;
uint32 nPoints;
CSpriteVertex ClippedSpriteVerts[40 + 5];
if(pInstance->m_ClipperPoly != INVALID_HPOLY)
{
if(!d3d_ClipSprite(pInstance, pInstance->m_ClipperPoly, &pPoints, &nPoints, ClippedSpriteVerts))
{
return;
}
}
else
{
pPoints = SpriteVerts;
nPoints = 4;
}
if((pInstance->m_Flags & FLAG_SPRITEBIAS) && !(pInstance->m_Flags & FLAG_REALLYCLOSE))
{
//adjust the points
for(uint32 nCurrPt = 0; nCurrPt < nPoints; nCurrPt++)
{
//get the sprite vertex that we are modifying
LTVector& vPt = SpriteVerts[nCurrPt].m_Vec;
//find a point relative to the viewer position
LTVector vPtRelCamera = vPt - Params.m_Pos;
//determine the distance from the camera
float fZ = vPtRelCamera.Dot(Params.m_Forward);
if(fZ <= NEARZ)
continue;
//find the bias, up to, but not including the near plane
float fBiasDist = SPRITE_POSITION_ZBIAS;
if((fZ + fBiasDist) < NEARZ)
fBiasDist = NEARZ - fZ;
//now adjust our vectors accordingly so that we can move it forward
//but have it be the same size
float fScale = 1 + fBiasDist / fZ;
vPt = Params.m_Right * vPtRelCamera.Dot(Params.m_Right) * fScale +
Params.m_Up * vPtRelCamera.Dot(Params.m_Up) * fScale +
(fZ + fBiasDist) * Params.m_Forward + Params.m_Pos;
}
}
LTEffectImpl* pEffect = (LTEffectImpl*)LTEffectShaderMgr::GetSingleton().GetEffectShader(pInstance->m_nEffectShaderID);
if(pEffect)
{
pEffect->UploadVertexDeclaration();
ID3DXEffect* pD3DEffect = pEffect->GetEffect();
if(pD3DEffect)
{
RTexture* pTexture = (RTexture*)pShared->m_pRenderData;
pD3DEffect->SetTexture("texture0", pTexture->m_pD3DTexture);
i_client_shell->OnEffectShaderSetParams(pEffect, NULL, NULL, LTShaderDeviceStateImp::GetSingleton());
UINT nPasses = 0;
pD3DEffect->Begin(&nPasses, 0);
for(UINT i = 0; i < nPasses; ++i)
{
pD3DEffect->BeginPass(i);
D3D_CALL(PD3DDEVICE->DrawPrimitiveUP(D3DPT_TRIANGLEFAN, nPoints-2, pPoints, sizeof(CSpriteVertex)));
pD3DEffect->EndPass();
}
pD3DEffect->End();
}
}
else
{
D3D_CALL(PD3DDEVICE->SetVertexShader(NULL));
D3D_CALL(PD3DDEVICE->SetFVF(SPRITEVERTEX_FORMAT));
D3D_CALL(PD3DDEVICE->DrawPrimitiveUP(D3DPT_TRIANGLEFAN, nPoints-2, pPoints, sizeof(CSpriteVertex)));
}
d3d_DisableTexture(0);
}
bool CPolyTubeFX::Update(float tmFrameTime)
{
// Base class update first
if (!CBaseFX::Update(tmFrameTime))
return false;
if ((!m_hTexture) && (!m_bLoadFailed))
{
m_pLTClient->GetTexInterface()->CreateTextureFromName(m_hTexture, GetProps()->m_sPath);
if (m_hTexture)
{
// Retrieve texture dims
uint32 nHeight;
m_pLTClient->GetTexInterface()->GetTextureDims(m_hTexture, m_dwWidth, nHeight);
}
else
{
m_bLoadFailed = true;
}
}
if ((m_collPathPts.GetSize() < 2) && IsShuttingDown())
{
m_collPathPts.RemoveAll();
return true;
}
float tmAddPtInterval = GetProps()->m_tmAddPtInterval * 2.0f;
LTRotation rRot;
m_pLTClient->GetObjectRotation( m_hObject, &rRot );
//increase the emission time elapse
m_tmElapsedEmission += tmFrameTime;
if (!IsShuttingDown() &&
(m_collPathPts.GetSize() < GetProps()->m_nMaxTrailLength) &&
((m_tmElapsedEmission > GetProps()->m_tmAddPtInterval) || (m_collPathPts.GetSize() == 1)))
{
LTVector vNew = m_vPos;
// Only add the new point if it's not the same as the last one....
// Add a new trail section
PT_TRAIL_SECTION ts;
ts.m_vPos = vNew;
ts.m_tmElapsed = 0.0f;
switch( GetProps()->m_eAllignment )
{
case ePTA_Up:
ts.m_vBisector = rRot.Up();
break;
case ePTA_Right:
ts.m_vBisector = rRot.Right();
break;
case ePTA_Forward:
ts.m_vBisector = rRot.Forward();
break;
case ePTA_Camera:
default:
ts.m_vBisector.Init();
break;
}
// Compute u coordinate
if (m_collPathPts.GetSize())
{
LTVector vPrev = m_collPathPts.GetTail()->m_Data.m_vPos;
float fUPrev = m_collPathPts.GetTail()->m_Data.m_uVal;
float fWidth = (float)m_dwWidth;
float fScalar = fWidth / GetProps()->m_fTrailWidth;
ts.m_uVal = fUPrev + ((((vNew - vPrev).Mag()) / fWidth) * fScalar);
}
else
{
ts.m_uVal = 0.0f;
}
m_collPathPts.AddTail(ts);
m_tmElapsedEmission = 0.0f;
}
// Render the tube....
if (m_collPathPts.GetSize() < 2) return true;
CLinkListNode<PT_TRAIL_SECTION> *pNode = m_collPathPts.GetHead();
// Fudge the last point to be the current one...
if( !IsShuttingDown() )
m_collPathPts.GetTail()->m_Data.m_vPos = m_vPos;
// Transform the path
LTMatrix mCam;
if( m_bReallyClose || (GetProps()->m_eAllignment != ePTA_Camera))
{
mCam.Identity();
}
else
{
mCam = GetCamTransform(m_pLTClient, m_hCamera);
}
while (pNode)
{
MatVMul(&pNode->m_Data.m_vTran, &mCam, &pNode->m_Data.m_vPos);
pNode = pNode->m_pNext;
}
// Do some precalculations
pNode = m_collPathPts.GetHead();
float fCurU = 0.0f;
while (pNode)
{
pNode->m_Data.m_tmElapsed += tmFrameTime;
if( GetProps()->m_eAllignment == ePTA_Camera )
{
LTVector vBisector;
vBisector.z = 0.0f;
// Compute the midpoint vectors
if (pNode == m_collPathPts.GetHead())
{
LTVector vStart = pNode->m_Data.m_vTran;
LTVector vEnd = pNode->m_pNext->m_Data.m_vTran;
vBisector.x = vEnd.y - vStart.y;
vBisector.y = -(vEnd.x - vStart.x);
}
else if (pNode == m_collPathPts.GetTail())
{
LTVector vEnd = pNode->m_Data.m_vTran;
LTVector vStart = pNode->m_pPrev->m_Data.m_vTran;
vBisector.x = vEnd.y - vStart.y;
vBisector.y = -(vEnd.x - vStart.x);
}
else
{
LTVector vPrev = pNode->m_pPrev->m_Data.m_vTran;
LTVector vStart = pNode->m_Data.m_vTran;
LTVector vEnd = pNode->m_pNext->m_Data.m_vTran;
float x1 = vEnd.y - vStart.y;
float y1 = -(vEnd.x - vStart.x);
float z1 = vStart.z - vEnd.z;
float x2 = vStart.y - vPrev.y;
float y2 = -(vStart.x - vPrev.x);
float z2 = vPrev.z - vEnd.z;
vBisector.x = (x1 + x2) / 2.0f;
vBisector.y = (y1 + y2) / 2.0f;
}
pNode->m_Data.m_vBisector = vBisector;
}
LTFLOAT fWidth = CalcCurWidth();
pNode->m_Data.m_vBisector.Norm( fWidth );
// Setup the colour
float r, g, b, a;
CalcColour(pNode->m_Data.m_tmElapsed, GetProps()->m_tmSectionLifespan, &r, &g, &b, &a);
int ir = (int)(r * 255.0f);
int ig = (int)(g * 255.0f);
int ib = (int)(b * 255.0f);
int ia = (int)(a * 255.0f);
pNode->m_Data.m_red = Clamp( ir, 0, 255 );
pNode->m_Data.m_green = Clamp( ig, 0, 255 );
pNode->m_Data.m_blue = Clamp( ib, 0, 255 );
pNode->m_Data.m_alpha = Clamp( ia, 0, 255 );
pNode = pNode->m_pNext;
}
pNode = m_collPathPts.GetHead();
pNode = m_collPathPts.GetHead();
// Delete any dead nodes
while (pNode->m_pNext)
{
CLinkListNode<PT_TRAIL_SECTION> *pDelNode= NULL;
if (pNode->m_Data.m_tmElapsed >= GetProps()->m_tmSectionLifespan)
{
pDelNode = pNode;
}
pNode = pNode->m_pNext;
if (pDelNode) m_collPathPts.Remove(pDelNode);
}
// Increment the offset
m_uOffset += tmFrameTime * GetProps()->m_uAdd;
// Success !!
return true;
}
static void RecurseAndGrowDims(CWorldNode *pNode, LTVector &vMin, LTVector &vMax, LTMatrix& mTransMat)
{
//sanity check
if(pNode == NULL)
{
return;
}
// Grow the dims for this node
switch (pNode->GetType())
{
case Node_Object :
{
CBaseEditObj *pObject = pNode->AsObject();
LTVector vCenter;
mTransMat.Apply(pObject->GetPos(), vCenter);
//always include at least the object center
VEC_MIN(vMin, vMin, vCenter);
VEC_MAX(vMax, vMax, vCenter);
#ifdef DIRECTEDITOR_BUILD
//see if there are other dims we need
for (uint32 nCurDim = pObject->GetNumDims(); nCurDim > 0; --nCurDim)
{
LTVector vDims = *pObject->GetDim(nCurDim - 1);
LTVector vObjMin = vCenter - vDims;
LTVector vObjMax = vCenter + vDims;
VEC_MIN(vMin, vMin, vObjMin);
VEC_MAX(vMax, vMax, vObjMax);
}
#endif
}
break;
case Node_Brush:
{
CEditBrush *pBrush = pNode->AsBrush();
CBoundingBox BBox = pBrush->CalcBoundingBox();
//transform the bounding box
LTVector vBoxMin, vBoxMax;
mTransMat.Apply(BBox.m_Min, vBoxMin);
mTransMat.Apply(BBox.m_Max, vBoxMax);
VEC_MIN(vMin, vMin, vBoxMin);
VEC_MAX(vMax, vMax, vBoxMax);
}
break;
case Node_PrefabRef:
{
//create the new transformation matrix
LTMatrix mRot;
::gr_SetupMatrixEuler(pNode->GetOr(), mRot.m);
LTMatrix mTranslate;
mTranslate.Identity();
mTranslate.SetTranslation(pNode->GetPos());
LTMatrix mNewTransMat = mTransMat * mTranslate * mRot;
RecurseAndGrowDims((CWorldNode*)((CPrefabRef*)pNode)->GetPrefabTree(), vMin, vMax, mNewTransMat);
}
break;
}
// Go through the children
GPOS iFinger = pNode->m_Children.GetHeadPosition();
while (iFinger)
{
CWorldNode *pChild = pNode->m_Children.GetNext(iFinger);
RecurseAndGrowDims(pChild, vMin, vMax, mTransMat);
}
}
// Sets up pParams.
// pPos and pRotation are the view position and orientation.
// pRect is the rectangle on the screen that the viewing window maps into.
// pScale is an extra scale that scales all the coordinates up.
bool d3d_InitFrustum2(ViewParams *pParams,
ViewBoxDef *pViewBox,
float screenMinX, float screenMinY, float screenMaxX, float screenMaxY,
const LTMatrix *pMat, const LTVector& vScale, ViewParams::ERenderMode eMode)
{
LTMatrix mTempWorld, mRotation, mScale;
LTMatrix mFOVScale, mBackTransform;
LTMatrix mDevice, mBackTranslate;
float leftX, rightX, topY, bottomY, normalZ;
uint32 i;
LTVector forwardVec, zPlanePos, vTrans;
LTMatrix mProjectionTransform; //mUnit, mPerspective;
pParams->m_mIdentity.Identity();
pParams->m_mInvView = *pMat;
// Here's how the viewing works:
// The world to camera transformation rotates and translates
// the world into camera space.
// The camera to clip transformation just scales the sides so the
// field of view is 90 degrees (faster to clip in).
// Clipping takes place on NEARZ and g_ViewParams.m_FarZ.
// In terms of Z buffer calculations, the maximum Z is MAX_FARZ (that way,
// when the farZ clipping plane is changed, sz and rhw stay the same).
/////// Copy stuff in and setup view limits.
memcpy(&pParams->m_ViewBox, pViewBox, sizeof(pParams->m_ViewBox));
pMat->GetTranslation(pParams->m_Pos);
pParams->m_FarZ = pViewBox->m_FarZ;
if(pParams->m_FarZ < 3.0f) pParams->m_FarZ = 3.0f;
if(pParams->m_FarZ > MAX_FARZ) pParams->m_FarZ = MAX_FARZ;
pParams->m_NearZ = pViewBox->m_NearZ;
pParams->m_Rect.left = (int)RoundFloatToInt(screenMinX);
pParams->m_Rect.top = (int)RoundFloatToInt(screenMinY);
pParams->m_Rect.right = (int)RoundFloatToInt(screenMaxX);
pParams->m_Rect.bottom = (int)RoundFloatToInt(screenMaxY);
/////// Setup all the matrices.
// Setup the rotation and translation transforms.
mRotation = *pMat;
mRotation.SetTranslation(0.0f, 0.0f, 0.0f);
Mat_GetBasisVectors(&mRotation, &pParams->m_Right, &pParams->m_Up, &pParams->m_Forward);
// We want to transpose (ie: when we're looking left, rotate the world to the right..)
MatTranspose3x3(&mRotation);
mBackTranslate.Init(
1, 0, 0, -pParams->m_Pos.x,
0, 1, 0, -pParams->m_Pos.y,
0, 0, 1, -pParams->m_Pos.z,
0, 0, 0, 1);
MatMul(&mTempWorld, &mRotation, &mBackTranslate);
// Scale it to get the full world transform.
mScale.Init(
vScale.x, 0, 0, 0,
0, vScale.y, 0, 0,
0, 0, vScale.z, 0,
0, 0, 0, 1);
MatMul(&pParams->m_mView, &mScale, &mTempWorld);
// Shear so the center of projection is (0,0,COP.z)
LTMatrix mShear;
mShear.Init(
1.0f, 0.0f, -pViewBox->m_COP.x/pViewBox->m_COP.z, 0.0f,
0.0f, 1.0f, -pViewBox->m_COP.y/pViewBox->m_COP.z, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f);
// Figure out X and Y scale to get frustum into unit slopes.
float fFovXScale = pViewBox->m_COP.z / pViewBox->m_WindowSize[0];
float fFovYScale = pViewBox->m_COP.z / pViewBox->m_WindowSize[1];
// Squash the sides to 45 degree angles.
mFOVScale.Init(
fFovXScale, 0.0f, 0.0f, 0.0f,
0.0f, fFovYScale, 0.0f, 0.0f,
0.0f, 0.0f, 1.0f, 0.0f,
0.0f, 0.0f, 0.0f, 1.0f);
// Setup the projection transform.
d3d_SetupPerspectiveMatrix(&mProjectionTransform, pViewBox->m_NearZ, pParams->m_FarZ);
// Setup the projection space (-1<x<1) to device space transformation.
pParams->m_fScreenWidth = (screenMaxX - screenMinX);
pParams->m_fScreenHeight = (screenMaxY - screenMinY);
// Setup the device transform. It subtracts 0.4 to account for the FP's tendency
// to slip above and below 0.5.
Mat_Identity(&mDevice);
mDevice.m[0][0] = pParams->m_fScreenWidth * 0.5f - 0.0001f;
mDevice.m[0][3] = screenMinX + pParams->m_fScreenWidth * 0.5f;
mDevice.m[1][1] = -(pParams->m_fScreenHeight * 0.5f - 0.0001f);
mDevice.m[1][3] = screenMinY + pParams->m_fScreenHeight * 0.5f;
// Precalculate useful matrices.
pParams->m_DeviceTimesProjection = mDevice * mProjectionTransform;
pParams->m_FullTransform = pParams->m_DeviceTimesProjection * mFOVScale * mShear * pParams->m_mView;
pParams->m_mProjection = mProjectionTransform * mFOVScale * mShear;
/////// Setup the view frustum points in camera space.
float xNearZ, yNearZ, xFarZ, yFarZ;
xNearZ = (pParams->m_NearZ * pViewBox->m_WindowSize[0]) / pViewBox->m_COP.z;
yNearZ = (pParams->m_NearZ * pViewBox->m_WindowSize[1]) / pViewBox->m_COP.z;
xFarZ = (pParams->m_FarZ * pViewBox->m_WindowSize[0]) / pViewBox->m_COP.z;
yFarZ = (pParams->m_FarZ * pViewBox->m_WindowSize[1]) / pViewBox->m_COP.z;
pParams->m_ViewPoints[0].Init(-xNearZ, yNearZ, pParams->m_NearZ); // Near Top Left
pParams->m_ViewPoints[1].Init(xNearZ, yNearZ, pParams->m_NearZ); // Near Top Right
pParams->m_ViewPoints[2].Init(-xNearZ, -yNearZ, pParams->m_NearZ); // Near Bottom Left
pParams->m_ViewPoints[3].Init(xNearZ, -yNearZ, pParams->m_NearZ); // Near Bottom Right
pParams->m_ViewPoints[4].Init(-xFarZ, yFarZ, pParams->m_FarZ); // Far Top Left
pParams->m_ViewPoints[5].Init(xFarZ, yFarZ, pParams->m_FarZ); // Far Top Right
pParams->m_ViewPoints[6].Init(-xFarZ, -yFarZ, pParams->m_FarZ); // Far Bottom Left
pParams->m_ViewPoints[7].Init(xFarZ, -yFarZ, pParams->m_FarZ); // Far Bottom Right
// Transform them into world space.
for(i=0; i < 8; i++)
{
MatVMul_InPlace_Transposed3x3(&pParams->m_mView, &pParams->m_ViewPoints[i]);
pParams->m_ViewPoints[i] += pParams->m_Pos;
}
// Get the AABB of the view frustum
pParams->m_ViewAABBMin = pParams->m_ViewPoints[0];
pParams->m_ViewAABBMax = pParams->m_ViewPoints[0];
for(i=1; i < 8; i++)
{
VEC_MIN(pParams->m_ViewAABBMin, pParams->m_ViewAABBMin, pParams->m_ViewPoints[i]);
VEC_MAX(pParams->m_ViewAABBMax, pParams->m_ViewAABBMax, pParams->m_ViewPoints[i]);
}
/////// Setup the camera-space clipping planes.
leftX = pViewBox->m_COP.x - pViewBox->m_WindowSize[0];
rightX = pViewBox->m_COP.x + pViewBox->m_WindowSize[0];
topY = pViewBox->m_COP.y + pViewBox->m_WindowSize[1];
bottomY = pViewBox->m_COP.y - pViewBox->m_WindowSize[1];
normalZ = pViewBox->m_COP.z;
LTPlane CSClipPlanes[NUM_CLIPPLANES];
CSClipPlanes[CPLANE_NEAR_INDEX].m_Normal.Init(0.0f, 0.0f, 1.0f); // Near Z
CSClipPlanes[CPLANE_NEAR_INDEX].m_Dist = 1.0f;
CSClipPlanes[CPLANE_FAR_INDEX].m_Normal.Init(0.0f, 0.0f, -1.0f); // Far Z
CSClipPlanes[CPLANE_FAR_INDEX].m_Dist = -pParams->m_FarZ;
CSClipPlanes[CPLANE_LEFT_INDEX].m_Normal.Init(normalZ, 0.0f, -leftX); // Left
CSClipPlanes[CPLANE_RIGHT_INDEX].m_Normal.Init(-normalZ, 0.0f, rightX); // Right
CSClipPlanes[CPLANE_TOP_INDEX].m_Normal.Init(0.0f, -normalZ, topY); // Top
CSClipPlanes[CPLANE_BOTTOM_INDEX].m_Normal.Init(0.0f, normalZ, -bottomY); // Bottom
CSClipPlanes[CPLANE_LEFT_INDEX].m_Normal.Norm();
CSClipPlanes[CPLANE_TOP_INDEX].m_Normal.Norm();
CSClipPlanes[CPLANE_RIGHT_INDEX].m_Normal.Norm();
CSClipPlanes[CPLANE_BOTTOM_INDEX].m_Normal.Norm();
CSClipPlanes[CPLANE_LEFT_INDEX].m_Dist = CSClipPlanes[CPLANE_RIGHT_INDEX].m_Dist = 0.0f;
CSClipPlanes[CPLANE_TOP_INDEX].m_Dist = CSClipPlanes[CPLANE_BOTTOM_INDEX].m_Dist = 0.0f;
// Now setup the world space clipping planes.
mBackTransform = pParams->m_mView;
MatTranspose3x3(&mBackTransform);
for(i=0; i < NUM_CLIPPLANES; i++)
{
if(i != CPLANE_NEAR_INDEX && i != CPLANE_FAR_INDEX)
{
MatVMul_3x3(&pParams->m_ClipPlanes[i].m_Normal, &mBackTransform, &CSClipPlanes[i].m_Normal);
pParams->m_ClipPlanes[i].m_Dist = pParams->m_ClipPlanes[i].m_Normal.Dot(pParams->m_Pos);
}
}
// The Z planes need to be handled a little differently.
forwardVec.Init(mRotation.m[2][0], mRotation.m[2][1], mRotation.m[2][2]);
zPlanePos = forwardVec * pViewBox->m_NearZ;
zPlanePos += pParams->m_Pos;
MatVMul_3x3(&pParams->m_ClipPlanes[CPLANE_NEAR_INDEX].m_Normal,
&mBackTransform, &CSClipPlanes[CPLANE_NEAR_INDEX].m_Normal);
pParams->m_ClipPlanes[CPLANE_NEAR_INDEX].m_Dist =
pParams->m_ClipPlanes[CPLANE_NEAR_INDEX].m_Normal.Dot(zPlanePos);
zPlanePos = forwardVec * pParams->m_FarZ;
zPlanePos += pParams->m_Pos;
MatVMul_3x3(&pParams->m_ClipPlanes[CPLANE_FAR_INDEX].m_Normal,
&mBackTransform, &CSClipPlanes[CPLANE_FAR_INDEX].m_Normal);
pParams->m_ClipPlanes[CPLANE_FAR_INDEX].m_Dist =
pParams->m_ClipPlanes[CPLANE_FAR_INDEX].m_Normal.Dot(zPlanePos);
// Remember AABB Corners the planes are pointing at
for (uint32 nPlaneLoop = 0; nPlaneLoop < NUM_CLIPPLANES; ++nPlaneLoop)
{
pParams->m_AABBPlaneCorner[nPlaneLoop] =
GetAABBPlaneCorner(pParams->m_ClipPlanes[nPlaneLoop].m_Normal);
}
// Default the world transform to identity
pParams->m_mInvWorld.Identity();
//setup the environment mapping info
pParams->m_mWorldEnvMap.SetBasisVectors(&pParams->m_Right, &pParams->m_Up, &pParams->m_Forward);
//turn off glowing by default
pParams->m_eRenderMode = eMode;
d3d_SetupSkyStuff(g_pSceneDesc->m_SkyDef, pParams);
return true;
}
BOOL CRVTrackerDrawPoly::OnRotate()
{
// Get the brush
CEditBrush *pBrush = &m_pView->DrawingBrush();
// Make sure we've got at least three points specified
if (pBrush->m_Points.GetSize() < 3)
return FALSE;
// The origin's point #1
CVector vOrigin = pBrush->m_Points[0];
// The original rotation direction's point #2
CVector vBase = pBrush->m_Points[1];
// The new rotation's point #3
CVector vNew = pBrush->m_Points[2];
// Get the base direction
CVector vBaseDir = vBase - vOrigin;
float fBaseMag = vBaseDir.Mag();
// Don't allow duplicate points
if (fBaseMag < 0.01f)
return TRUE;
vBaseDir *= 1.0f / fBaseMag;
// Get the rotation direction
CVector vNewDir = vNew - vOrigin;
float fNewMag = vNewDir.Mag();
// Don't allow duplicate points
if (fNewMag < 0.01f)
return TRUE;
vNewDir *= 1.0f / fNewMag;
// Get the rotation axis
CVector vRotAxis = vNewDir.Cross(vBaseDir);
// Get the sin of the angle from the cross product
float fRotAngle = vRotAxis.Mag();
// Don't bother if the angle's 0...
if (fRotAngle == 0.0f)
return TRUE;
// Normalize the axis
vRotAxis *= 1.0f / fRotAngle;
// Get the actual angle
fRotAngle = (float)asin(fRotAngle);
// Handle obtuse angles..
if (vBaseDir.Dot(vNewDir) < 0.0f)
fRotAngle = MATH_PI - fRotAngle;
LTMatrix mRotation;
// Get the rotation matrix
mRotation.SetupRot(vRotAxis, fRotAngle);
// Set up an undo..
CEditRegion *pRegion = m_pView->GetRegion();
PreActionList actionList;
for (uint32 nUndoLoop = 0; nUndoLoop < pRegion->m_Selections; ++nUndoLoop)
actionList.AddTail(new CPreAction(ACTION_MODIFYNODE, pRegion->m_Selections[nUndoLoop]));
m_pView->GetRegionDoc()->Modify(&actionList, TRUE);
// If we're in geometry mode..
if (m_pView->GetEditMode() == GEOMETRY_EDITMODE)
{
// Get the selected vertices
CVertRefArray vertList;
m_pView->GetSelectedVerts(vertList);
// Rotate 'em
for (uint32 nVertLoop = 0; nVertLoop < vertList.GetSize(); ++nVertLoop)
{
CVertRef vert = vertList[nVertLoop];
if (!vert.IsValid())
continue;
vert() -= vOrigin;
mRotation.Apply(vert());
vert() += vOrigin;
}
}
else
{
// Otherwise, rotate all the selected nodes
for (uint32 nNodeLoop = 0; nNodeLoop < pRegion->m_Selections.GetSize( ); ++nNodeLoop)
{
pRegion->m_Selections[nNodeLoop]->Rotate(mRotation, vOrigin);
}
// Update the selection box since stuff rotated...
m_pView->GetRegionDoc()->UpdateSelectionBox();
}
return TRUE;
}
//given an animation and a keyframe, this will find the dims that encompass the
//model
bool CDimensionsDlg::FindAnimDims(Model* pModel, uint32 nAnim, uint32 nKeyFrame, LTVector& vDims)
{
//clear out the dims to start out with in case we fail
vDims.Init();
AnimTracker tracker, *pTracker;
tracker.m_TimeRef.Init(pModel, nAnim, nKeyFrame, nAnim, nKeyFrame, 0.0f);
AnimInfo *pAnim = &pModel->m_Anims[nAnim];
pTracker = &tracker;//pAnim->m_pAnim;
static CMoArray<TVert> tVerts;
// Use the model code to setup the vertices.
int nTrackers = 1;
nTrackers = DMIN(nTrackers, MAX_GVP_ANIMS);
GVPStruct gvp;
gvp.m_nAnims = 0;
for(int i = 0; i < nTrackers; i++)
{
gvp.m_Anims[i] = pTracker[i].m_TimeRef;
gvp.m_nAnims++;
}
LTMatrix m;
m.Identity();
int nWantedVerts = pModel->GetTotalNumVerts() * 2;
if(tVerts.GetSize() < nWantedVerts)
{
if(!tVerts.SetSize(nWantedVerts))
return false;
}
gvp.m_VertexStride = sizeof(TVert);
gvp.m_Vertices = tVerts.GetArray();
gvp.m_BaseTransform = m;
gvp.m_CurrentLODDist = 0;
if (AlternateGetVertexPositions(pModel, &gvp, true, false, false, false))
{
LTVector vMax(0, 0, 0);
for (i = 0; i < pModel->GetTotalNumVerts(); i ++)
{
TVert v = tVerts[i];
if (fabs(v.m_vPos.x) > vMax.x) vMax.x = (float)fabs(v.m_vPos.x);
if (fabs(v.m_vPos.y) > vMax.y) vMax.y = (float)fabs(v.m_vPos.y);
if (fabs(v.m_vPos.z) > vMax.z) vMax.z = (float)fabs(v.m_vPos.z);
}
// Setup the new dims....
//round max up to the .1 decimal place
vMax.x = (float)(ceil(vMax.x * 10.0) / 10.0);
vMax.y = (float)(ceil(vMax.y * 10.0) / 10.0);
vMax.z = (float)(ceil(vMax.z * 10.0) / 10.0);
vDims = vMax;
return true;
}
//failure
return false;
}
void CLightningFX::PreRender( float tmFrameTime )
{
LTVector vPulse;
LTVector vF(0.0f, 0.0f, 1.0f);
LTVector vU(0.0f, 1.0f, 0.0f);
LTVector vR(1.0f, 0.0f, 0.0f);
// Transform the bolt
LTMatrix mCam;
if( m_bReallyClose )
{
mCam.Identity();
}
else
{
mCam = GetCamTransform(m_pLTClient, m_hCamera);
}
CLightningBolt *pBolt = LTNULL;
LightningBolts::iterator iter;
for( iter = m_lstBolts.begin(); iter != m_lstBolts.end(); ++iter )
{
pBolt = *iter;
// Skip this bolt if there are not enough segments...
if( pBolt->m_collPathPts.GetSize() < 2 || !pBolt->m_bActive )
continue;
CLinkListNode<PT_TRAIL_SECTION> *pNode = pBolt->m_collPathPts.GetHead();
//as long as some amount of time has passed, apply a pulse onto the bolt to make
//it jitter
if(tmFrameTime > 0.001f)
{
while (pNode)
{
vPulse = pNode->m_Data.m_vPos;
vPulse += (vF * GetRandom( -GetProps()->m_fPulse, GetProps()->m_fPulse ));
vPulse += (vU * GetRandom( -GetProps()->m_fPulse, GetProps()->m_fPulse ));
vPulse += (vR * GetRandom( -GetProps()->m_fPulse, GetProps()->m_fPulse ));
if( pNode == pBolt->m_collPathPts.GetHead() || !pNode->m_pNext )
{
MatVMul(&pNode->m_Data.m_vTran, &mCam, &pNode->m_Data.m_vPos);
}
else
{
MatVMul(&pNode->m_Data.m_vTran, &mCam, &vPulse);
}
pNode = pNode->m_pNext;
}
}
// Do some precalculations
float fScale;
CalcScale( pBolt->m_tmElapsed, pBolt->m_fLifetime, &fScale );
float fWidth = pBolt->m_fWidth * fScale;
// Setup the colour
float r, g, b, a;
CalcColour( pBolt->m_tmElapsed, pBolt->m_fLifetime, &r, &g, &b, &a );
int ir = Clamp( (int)(r * 255.0f), 0, 255 );
int ig = Clamp( (int)(g * 255.0f), 0, 255 );
int ib = Clamp( (int)(b * 255.0f), 0, 255 );
int ia = Clamp( (int)(a * 255.0f), 0, 255 );
LTVector vStart, vEnd, vPrev, vBisector;
vBisector.z = 0.0f;
pNode = pBolt->m_collPathPts.GetHead();
while( pNode )
{
if( GetProps()->m_eAllignment == ePTA_Camera )
{
// Compute the midpoint vectors
if( pNode == pBolt->m_collPathPts.GetHead() )
{
vStart = pNode->m_Data.m_vTran;
vEnd = pNode->m_pNext->m_Data.m_vTran;
vBisector.x = vEnd.y - vStart.y;
vBisector.y = -(vEnd.x - vStart.x);
}
else if( pNode == pBolt->m_collPathPts.GetTail() )
{
vEnd = pNode->m_Data.m_vTran;
vStart = pNode->m_pPrev->m_Data.m_vTran;
vBisector.x = vEnd.y - vStart.y;
vBisector.y = -(vEnd.x - vStart.x);
}
else
{
vPrev = pNode->m_pPrev->m_Data.m_vTran;
vStart = pNode->m_Data.m_vTran;
vEnd = pNode->m_pNext->m_Data.m_vTran;
float x1 = vEnd.y - vStart.y;
float y1 = -(vEnd.x - vStart.x);
float z1 = vStart.z - vEnd.z;
float x2 = vStart.y - vPrev.y;
float y2 = -(vStart.x - vPrev.x);
float z2 = vPrev.z - vEnd.z;
vBisector.x = (x1 + x2) / 2.0f;
vBisector.y = (y1 + y2) / 2.0f;
}
pNode->m_Data.m_vBisector = vBisector;
}
// Set the width for this section...
pNode->m_Data.m_vBisector.Norm( fWidth );
// Set the color for this section...
pNode->m_Data.m_red = ir;
pNode->m_Data.m_green = ig;
pNode->m_Data.m_blue = ib;
pNode->m_Data.m_alpha = ia;
pNode = pNode->m_pNext;
}
}
}
// Wrap the textures, starting at a poly index
void CRVTrackerTextureWrap::WrapTexture(CTWPolyInfo *pPoly, const CVector &vWrapDir, CTextExtents &cExtents) const
{
// Mark this poly as wrapped
pPoly->m_bTouched = TRUE;
CTexturedPlane& Texture = pPoly->m_pPoly->GetTexture(GetCurrTexture());
// Get the texture space
LTVector vWrapO = Texture.GetO();
LTVector vWrapP = Texture.GetP();
LTVector vWrapQ = Texture.GetQ();
// Get the texture offset projections
float fWrapOdotP = vWrapO.Dot(vWrapP);
float fWrapOdotQ = vWrapO.Dot(vWrapQ);
// Update the texturing extents
for (uint32 nExtentLoop = 0; nExtentLoop < pPoly->m_aEdges.GetSize(); ++nExtentLoop)
{
LTVector vEdgePt = pPoly->m_aEdges[nExtentLoop]->m_aPt[0];
float fCurU = vWrapP.Dot(vEdgePt) - fWrapOdotP;
float fCurV = vWrapQ.Dot(vEdgePt) - fWrapOdotQ;
cExtents.m_fMinU = LTMIN(fCurU, cExtents.m_fMinU);
cExtents.m_fMaxU = LTMAX(fCurU, cExtents.m_fMaxU);
cExtents.m_fMinV = LTMIN(fCurV, cExtents.m_fMinV);
cExtents.m_fMaxV = LTMAX(fCurV, cExtents.m_fMaxV);
}
CMoArray<uint32> aNeighbors;
CMoArray<float> aDots;
// Insert the neighbors into a list in dot-product order
for (uint32 nNeighborLoop = 0; nNeighborLoop < pPoly->m_aNeighbors.GetSize(); ++nNeighborLoop)
{
CTWPolyInfo *pNeighbor = pPoly->m_aNeighbors[nNeighborLoop];
// Skip edges that don't have a neighbor
if (!pNeighbor)
continue;
// Skip neighbors that are already wrapped
if (pNeighbor->m_bTouched)
continue;
// Get our dot product
float fCurDot = vWrapDir.Dot(pPoly->m_aEdges[nNeighborLoop]->m_Plane.m_Normal);
if ((m_bRestrictWalkDir) && (fCurDot < 0.707f))
continue;
// Mark this neighbor as touched (to avoid later polygons pushing it onto the stack)
pNeighbor->m_bTouched = TRUE;
// Insert it into the list
for (uint32 nInsertLoop = 0; nInsertLoop < aNeighbors.GetSize(); ++nInsertLoop)
{
if (fCurDot > aDots[nInsertLoop])
break;
}
aDots.Insert(nInsertLoop, fCurDot);
aNeighbors.Insert(nInsertLoop, nNeighborLoop);
}
// Recurse through its neighbors
for (uint32 nWrapLoop = 0; nWrapLoop < aNeighbors.GetSize(); ++nWrapLoop)
{
CTWPolyInfo *pNeighbor = pPoly->m_aNeighbors[aNeighbors[nWrapLoop]];
CTWEdgeInfo *pEdge = pPoly->m_aEdges[aNeighbors[nWrapLoop]];
//////////////////////////////////////////////////////////////////////////////
// Wrap this neighbor
// Create a matrix representing the basis of the polygon in relation to this edge
LTMatrix mPolyBasis;
mPolyBasis.SetTranslation(0.0f, 0.0f, 0.0f);
mPolyBasis.SetBasisVectors(&pEdge->m_vDir, &pPoly->m_pPoly->m_Plane.m_Normal, &pEdge->m_Plane.m_Normal);
// Create a new basis for the neighbor polygon
LTMatrix mNeighborBasis;
LTVector vNeighborForward;
vNeighborForward = pNeighbor->m_pPoly->m_Plane.m_Normal.Cross(pEdge->m_vDir);
// Just to be sure..
vNeighborForward.Norm();
mNeighborBasis.SetTranslation(0.0f, 0.0f, 0.0f);
mNeighborBasis.SetBasisVectors(&pEdge->m_vDir, &pNeighbor->m_pPoly->m_Plane.m_Normal, &vNeighborForward);
// Create a rotation matrix from here to there
LTMatrix mRotation;
mRotation = mNeighborBasis * ~mPolyBasis;
// Rotate the various vectors
LTVector vNewP;
LTVector vNewQ;
LTVector vNewDir;
mRotation.Apply3x3(vWrapP, vNewP);
mRotation.Apply3x3(vWrapQ, vNewQ);
mRotation.Apply3x3(vWrapDir, vNewDir);
// Rotate the texture basis if we're following a path
if (m_nWrapStyle == k_WrapPath)
{
LTVector vNeighborEdgeDir;
if (GetSimilarEdgeDir(pNeighbor, vNewDir, vNeighborEdgeDir, 0.707f))
{
LTMatrix mRotatedNeighbor;
LTVector vNeighborRight;
vNeighborRight = vNeighborEdgeDir.Cross(pNeighbor->m_pPoly->m_Plane.m_Normal);
vNeighborRight.Norm();
// Make sure we're pointing the right way...
if (vNeighborRight.Dot(pEdge->m_vDir) < 0.0f)
vNeighborRight = -vNeighborRight;
mRotatedNeighbor.SetTranslation(0.0f, 0.0f, 0.0f);
mRotatedNeighbor.SetBasisVectors(&vNeighborRight, &pNeighbor->m_pPoly->m_Plane.m_Normal, &vNeighborEdgeDir);
// Build a basis based on an edge from the current polygon
LTVector vBestPolyEdge;
GetSimilarEdgeDir(pPoly, vWrapDir, vBestPolyEdge);
LTVector vPolyRight = vBestPolyEdge.Cross(pNeighbor->m_pPoly->m_Plane.m_Normal);
vPolyRight.Norm();
// Make sure we're pointing the right way...
if (vPolyRight.Dot(pEdge->m_vDir) < 0.0f)
vPolyRight = -vPolyRight;
// Build the poly edge matrix
LTMatrix mPolyEdgeBasis;
mPolyEdgeBasis.SetTranslation(0.0f, 0.0f, 0.0f);
mPolyEdgeBasis.SetBasisVectors(&vPolyRight, &pNeighbor->m_pPoly->m_Plane.m_Normal, &vBestPolyEdge);
// Get a matrix from here to there
LTMatrix mRotator;
mRotator = mRotatedNeighbor * ~mPolyEdgeBasis;
// Rotate the texture basis
mRotator.Apply3x3(vNewP);
mRotator.Apply3x3(vNewQ);
// And use the new edge as the new direction
vNewDir = vNeighborEdgeDir;
}
// Remove skew from vNewP/vNewQ
if ((float)fabs(vNewP.Dot(vNewQ)) > 0.001f)
{
float fMagP = vNewP.Mag();
float fMagQ = vNewQ.Mag();
vNewQ *= 1.0f / fMagQ;
vNewP -= vNewQ * vNewQ.Dot(vNewP);
vNewP.Norm(fMagP);
vNewQ *= fMagQ;
}
}
// Get the first edge point..
CVector vEdgePt = pEdge->m_aPt[0];
// Calculate the texture coordinate at this point
float fWrapU = vWrapP.Dot(vEdgePt) - fWrapOdotP;
float fWrapV = vWrapQ.Dot(vEdgePt) - fWrapOdotQ;
// Build the new offset
float fNewOdotP = vNewP.Dot(vEdgePt) - fWrapU;
float fNewOdotQ = vNewQ.Dot(vEdgePt) - fWrapV;
LTVector vNewO;
vNewO.Init();
float fNewPMag = vNewP.MagSqr();
if (fNewPMag > 0.0f)
vNewO += vNewP * (fNewOdotP / fNewPMag);
float fNewQMag = vNewQ.MagSqr();
if (fNewQMag > 0.0f)
vNewO += vNewQ * (fNewOdotQ / fNewQMag);
pNeighbor->m_pPoly->SetTextureSpace(GetCurrTexture(), vNewO, vNewP, vNewQ);
// Recurse into this neighbor
WrapTexture(pNeighbor, vNewDir, cExtents);
}
}
// returns true if intersection happened, plus fills hit dist param with
// the parametric position of the intersection on the ray dir.
// the obb must be within ray-origin + ray-dir. So ray-dir isn't normalized.
// source : Real-time rendering moller&haines
inline bool i_OrientedBoundingBoxTest(const ModelOBB &mobb,
const LTransform &tf,
const LTVector &origin,
const LTVector &dir,
float &t)
{
float tmin = -999999999999.0f;
float tmax = 999999999999.0f;
LTVector vObbPos = mobb.m_Pos;
// Setup our OBB's translated position
LTMatrix obb_mat;
obb_mat.Identity();
obb_mat.SetBasisVectors( &tf.m_Rot.Right(), &tf.m_Rot.Up(), &tf.m_Rot.Forward() );
obb_mat.SetTranslation( tf.m_Pos );
obb_mat.Apply(vObbPos);
LTVector p = vObbPos - origin;
float e ;
float f;
float hi;
float t1,t2;
// Setup OBB rotation tranforms
LTMatrix mObbMat;
mObbMat.SetBasisVectors(&mobb.m_Basis[0], &mobb.m_Basis[1], &mobb.m_Basis[2]);
// Get matrix of our Node's rotation
LTMatrix mTrMat;
tf.m_Rot.ConvertToMatrix(mTrMat);
// Apply our node rotation to our obb rotation
mTrMat.Apply(mObbMat);
// Get our translated basis vectors
LTVector axis[3];
mObbMat.GetBasisVectors(&axis[0], &axis[1], &axis[2]);
LTVector vSize = mobb.m_Size * 0.5f ; // we want the 1/2 size of the box.
for( int i = 0 ; i < 3 ; i++ )
{
e = axis[i].Dot(p);
f = axis[i].Dot(dir);
hi= vSize[i] ; //
if( fabs(f) > 0.00015 )
{
t1 = ( e + hi ) / f ;
t2 = ( e - hi ) / f ;
if( t1 > t2 ) {float v = t2 ; t2 = t1 ; t1 = v ; }
if(t1 > tmin ) {tmin = t1 ;}
if(t2 < tmax ) {tmax = t2 ;}
if(tmin > tmax ) {
return false ; }
if(tmax < 0 ) {
return false ; }
}
else if( ((-e - hi) > 0 ) || ( (-e + hi) < 0 )) { t = 0 ; return false ; }
}
if( tmin > 0 ) { t = tmin ; return true ; }
else { t = tmax ; return true ;}
}
float ModelDraw::GetDirLightAmount(ModelInstance* pInstance, const LTVector& vInstancePosition)
{
const WorldTreeNode* pWTRoot = world_bsp_client->ClientTree()->GetRootNode();
//the maximum distance we would ever need to cast a node
float fLongestDist = (pWTRoot->GetBBoxMax() - pWTRoot->GetBBoxMin()).Mag();
//figure out the segment that we will now intersect (opposite direction that the sun is going
//since we are shooting towards it)
LTVector vDir = g_pStruct->m_GlobalLightDir * -fLongestDist;
// Just do a single intersection in the middle out if the variance calculation's turned off
if (!g_CV_ModelSunVariance.m_Val)
return CastRayAtSky(vInstancePosition, vDir) ? 1.0f : 0.0f;
// Get the orienation of the model instance
LTMatrix mInstanceTransform;
pInstance->SetupTransform(mInstanceTransform);
// Figure out the shadow in/out direction
LTVector vUp, vForward, vRight;
mInstanceTransform.GetBasisVectors(&vRight, &vUp, &vForward);
LTVector vLightUp = g_pStruct->m_GlobalLightDir.Cross(vRight);
// Apply the size of the model to the shadow direction
vLightUp *= pInstance->GetRadius();
// Get top/bottom light states
bool bTopInLight = CastRayAtSky(vInstancePosition + vLightUp, vDir);
bool bBottomInLight = CastRayAtSky(vInstancePosition - vLightUp, vDir);
// Jump out if they're the same
if (bTopInLight == bBottomInLight)
return (bTopInLight) ? 1.0f : 0.0f;
// Do a binary subdivision to try and find the point of cross-over
bool bMiddleInLight;
float fVariance = 1.0f, fTop = 1.0f, fBottom = -1.0f, fMiddle;
float fLight = 1.0f;
while ((fVariance > g_CV_ModelSunVariance.m_Val) && (bBottomInLight != bTopInLight))
{
// Find the middle state
fMiddle = (fTop + fBottom) * 0.5f;
bMiddleInLight = CastRayAtSky(vInstancePosition + (vLightUp * fMiddle), vDir);
// Drop the variance
fVariance *= 0.5f;
// Keep track of the total
if (!bMiddleInLight)
fLight -= fVariance;
// Decide which half to keep
if (bMiddleInLight == bTopInLight)
{
fTop = fMiddle;
bTopInLight = bMiddleInLight;
}
else
{
fBottom = fMiddle;
bBottomInLight = bMiddleInLight;
}
}
return fLight;
}