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CWE-ou-minkata/MOULOpenSourceClientPlugin/Plasma20/Sources/Plasma/PubUtilLib/plGLight/plLightInfo.cpp

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Initial Commit of CyanWorlds.com Engine Open Source Client/Plugin
14 years ago
/*==LICENSE==*
CyanWorlds.com Engine - MMOG client, server and tools
Copyright (C) 2011 Cyan Worlds, Inc.
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <http://www.gnu.org/licenses/>.
You can contact Cyan Worlds, Inc. by email legal@cyan.com
or by snail mail at:
Cyan Worlds, Inc.
14617 N Newport Hwy
Mead, WA 99021
*==LICENSE==*/
#include "hsTypes.h"
#include "plLightInfo.h"
#include "plLightKonstants.h"
#include "hsBounds.h"
#include "hsStream.h"
#include "hsResMgr.h"
#include "../pnMessage/plNodeRefMsg.h"
#include "plgDispatch.h"
#include "../plIntersect/plVolumeIsect.h"
#include "../plDrawable/plSpaceTree.h"
#include "../plDrawable/plDrawableGenerator.h"
#include "../plDrawable/plDrawableSpans.h"
#include "../plPipeline/hsGDeviceRef.h"
#include "../plPipeline/plRenderTarget.h"
#include "hsFastMath.h"
#include "../pnSceneObject/plDrawInterface.h"
#include "../plSurface/plLayerInterface.h"
#include "../plSurface/plLayer.h"
#include "../plSurface/hsGMaterial.h"
#include "../plGImage/plMipmap.h"
#include "../plMessage/plRenderMsg.h"
#include "../plMessage/plRenderRequestMsg.h"
#include "../plScene/plRenderRequest.h"
#include "plPipeline.h"
#include "../plIntersect/plSoftVolume.h"
#include "../plPipeline/plPipeDebugFlags.h"
#include "../pnMessage/plPipeResMakeMsg.h"
#include "../plScene/plVisRegion.h"
#include "../plScene/plVisMgr.h"
// heinous
#include "../plNetClient/plNetClientMgr.h"
#include "../pnMessage/plEnableMsg.h"
static hsScalar kMaxYon = 1000.f;
static hsScalar kMinHither = 1.f;
#include "plLightProxy.h"
#include "../plDrawable/plDrawableGenerator.h"
plLightInfo::plLightInfo()
: fSceneNode(nil),
fDeviceRef(nil),
fVolFlags(0),
fProjection(nil),
fSoftVolume(nil)
{
fLightToWorld.Reset();
fWorldToLight.Reset();
fLocalToWorld.Reset();
fWorldToLocal.Reset();
fLightToLocal.Reset();
fLocalToLight.Reset();
fWorldToProj.Reset();
fNextDevPtr = nil;
fPrevDevPtr = nil;
fProxyGen = TRACKED_NEW plLightProxy;
fProxyGen->Init(this);
fRegisteredForRenderMsg = false;
fVisSet.SetBit(plVisMgr::kNormal);
}
plLightInfo::~plLightInfo()
{
if( fNextDevPtr != nil || fPrevDevPtr != nil )
Unlink();
hsRefCnt_SafeUnRef( fDeviceRef );
if( fRegisteredForRenderMsg )
{
plgDispatch::Dispatch()->UnRegisterForExactType(plRenderMsg::Index(), GetKey());
plgDispatch::Dispatch()->UnRegisterForExactType(plPipeRTMakeMsg::Index(), GetKey());
fRegisteredForRenderMsg = false;
}
delete fProxyGen;
}
void plLightInfo::SetDeviceRef( hsGDeviceRef *ref )
{
hsRefCnt_SafeAssign( fDeviceRef, ref );
}
void plLightInfo::IRefresh()
{
ICheckMaxStrength();
if( fDeviceRef )
fDeviceRef->SetDirty( true );
}
void plLightInfo::ICheckMaxStrength()
{
hsScalar r = GetDiffuse().r >= 0 ? GetDiffuse().r : -GetDiffuse().r;
hsScalar g = GetDiffuse().g >= 0 ? GetDiffuse().g : -GetDiffuse().g;
hsScalar b = GetDiffuse().b >= 0 ? GetDiffuse().b : -GetDiffuse().b;
fMaxStrength =
r > g
? (
r > b
? r
: b
)
: (
g > b
? g
: b
);
const hsScalar kMinMaxStrength = 1.e-2f;
SetZero(fMaxStrength < kMinMaxStrength);
}
void plLightInfo::GetStrengthAndScale(const hsBounds3Ext& bnd, hsScalar& strength, hsScalar& scale) const
{
if( IsIdle() )
{
strength = scale = 0.f;
return;
}
strength = fMaxStrength;
scale = 1.f;
if( fSoftVolume )
{
scale = fSoftVolume->GetStrength(bnd.GetCenter());
strength *= scale;
}
return;
}
void plLightInfo::GetAffectedForced(const plSpaceTree* space, hsBitVector& list, hsBool charac)
{
Refresh();
if( IGetIsect() )
{
space->HarvestLeaves(IGetIsect(), list);
}
else
{
list.Set(space->GetNumLeaves());
}
}
void plLightInfo::GetAffected(const plSpaceTree* space, hsBitVector& list, hsBool charac)
{
Refresh();
if( IsIdle() )
return;
if( !GetProperty(kLPHasIncludes) || (GetProperty(kLPIncludesChars) && charac) )
{
if( IGetIsect() )
{
space->HarvestLeaves(IGetIsect(), list);
}
else
{
list.Set(space->GetNumLeaves());
}
}
}
const hsTArray<Int16>& plLightInfo::GetAffected(plSpaceTree* space, const hsTArray<Int16>& visList, hsTArray<Int16>& litList, hsBool charac)
{
Refresh();
if( !IsIdle() )
{
if( !GetProperty(kLPHasIncludes) || (GetProperty(kLPIncludesChars) && charac) )
{
if( IGetIsect() )
{
static hsBitVector cache;
cache.Clear();
space->EnableLeaves(visList, cache);
space->HarvestEnabledLeaves(IGetIsect(), cache, litList);
return litList;
}
else
{
return visList;
}
}
}
litList.SetCount(0);
return litList;
}
//// Set/GetProperty /////////////////////////////////////////////////////////
// Sets/gets a property just like the normal Set/GetNativeProperty, but the
// flag taken in is from plDrawInterface, not our props flags. So we have to
// translate...
void plLightInfo::SetProperty( int prop, hsBool on )
{
plObjInterface::SetProperty(prop, on);
if( kDisable == prop )
fProxyGen->SetDisable(on);
}
//// SetSpecular /////////////////////////////////////////////////////////////
// A bit more complicated here--make sure we set/clear the kLPHasSpecular
// flag so we can test more easily for such a condition.
void plLightInfo::SetSpecular( const hsColorRGBA& c )
{
fSpecular = c;
if( fSpecular.r == 0.f && fSpecular.g == 0.f && fSpecular.b == 0.f )
SetProperty( kLPHasSpecular, false );
else
SetProperty( kLPHasSpecular, true );
SetDirty();
}
void plLightInfo::SetTransform(const hsMatrix44& l2w, const hsMatrix44& w2l)
{
fLocalToWorld = l2w;
fWorldToLocal = w2l;
fLightToWorld = l2w * fLightToLocal;
fWorldToLight = fLocalToLight * w2l;
if( IGetIsect() )
IGetIsect()->SetTransform(fLightToWorld, fWorldToLight);
if( fDeviceRef != nil )
fDeviceRef->SetDirty( true );
fProxyGen->SetTransform(fLightToWorld, fWorldToLight);
SetDirty(true);
if( GetProjection() )
{
Refresh();
hsMatrix44 w2proj = IGetWorldToProj();
plLayer* lay = plLayer::ConvertNoRef(GetProjection()->BottomOfStack());
if( lay )
{
lay->SetTransform(w2proj);
}
}
}
void plLightInfo::SetLocalToLight(const hsMatrix44& l2lt, const hsMatrix44& lt2l)
{
fLocalToLight = l2lt;
fLightToLocal = lt2l;
}
const hsMatrix44& plLightInfo::GetLocalToWorld() const
{
return fLocalToWorld;
}
const hsMatrix44& plLightInfo::GetWorldToLocal() const
{
return fWorldToLocal;
}
const hsMatrix44& plLightInfo::GetLightToWorld() const
{
return fLightToWorld;
}
const hsMatrix44& plLightInfo::GetWorldToLight() const
{
return fWorldToLight;
}
#include "plProfile.h"
plProfile_CreateTimer("Light Info", "RenderSetup", LightInfo);
void plLightInfo::IAddVisRegion(plVisRegion* reg)
{
if( reg )
{
int idx = fVisRegions.Find(reg);
if( fVisRegions.kMissingIndex == idx )
{
fVisRegions.Append(reg);
if( reg->GetProperty(plVisRegion::kIsNot) )
fVisNot.SetBit(reg->GetIndex());
else
{
fVisSet.SetBit(reg->GetIndex());
if( reg->ReplaceNormal() )
fVisSet.ClearBit(plVisMgr::kNormal);
}
}
}
}
void plLightInfo::IRemoveVisRegion(plVisRegion* reg)
{
if( reg )
{
int idx = fVisRegions.Find(reg);
if( fVisRegions.kMissingIndex != idx )
{
fVisRegions.Remove(idx);
if( reg->GetProperty(plVisRegion::kIsNot) )
fVisNot.ClearBit(reg->GetIndex());
else
fVisSet.ClearBit(reg->GetIndex());
}
}
}
hsBool plLightInfo::MsgReceive(plMessage* msg)
{
plRenderMsg* rendMsg = plRenderMsg::ConvertNoRef(msg);
if( rendMsg )
{
plProfile_BeginLap(LightInfo, this->GetKey()->GetUoid().GetObjectName());
if( !fDeviceRef && !GetProperty(kLPShadowOnly) )
{
rendMsg->Pipeline()->RegisterLight( this );
}
ICheckMaxStrength();
plProfile_EndLap(LightInfo, this->GetKey()->GetUoid().GetObjectName());
return true;
}
plGenRefMsg* refMsg = plGenRefMsg::ConvertNoRef(msg);
if( refMsg )
{
if( refMsg->GetContext() & (plRefMsg::kOnCreate|plRefMsg::kOnRequest|plRefMsg::kOnReplace) )
{
switch( refMsg->fType )
{
case kProjection:
fProjection = plLayerInterface::ConvertNoRef(refMsg->GetRef());
{
if( GetKey() && GetKey()->GetName() && !strncmp(GetKey()->GetName(), "RTPatternLight", strlen("RTPatternLight")) )
SetProperty(kLPForceProj, true);
}
break;
case kSoftVolume:
fSoftVolume = plSoftVolume::ConvertNoRef(refMsg->GetRef());
break;
case kVisRegion:
IAddVisRegion(plVisRegion::ConvertNoRef(refMsg->GetRef()));
break;
}
}
else if( refMsg->GetContext() & (plRefMsg::kOnRemove | plRefMsg::kOnDestroy) )
{
switch( refMsg->fType )
{
case kProjection:
fProjection = nil;
break;
case kSoftVolume:
fSoftVolume = nil;
break;
case kVisRegion:
IRemoveVisRegion(plVisRegion::ConvertNoRef(refMsg->GetRef()));
break;
}
}
return true;
}
plPipeRTMakeMsg* rtMake = plPipeRTMakeMsg::ConvertNoRef(msg);
if( rtMake )
{
// Make sure we're registered with the pipeline
// If we're only here to cast shadows, just don't tell anyone
// about us.
if( !fDeviceRef && !GetProperty(kLPShadowOnly) )
{
rtMake->Pipeline()->RegisterLight( this );
}
return true;
}
plEnableMsg* enaMsg = plEnableMsg::ConvertNoRef(msg);
if( enaMsg )
{
SetProperty(kDisable, enaMsg->Cmd(plEnableMsg::kDisable));
return true;
}
return plObjInterface::MsgReceive(msg);
}
void plLightInfo::Read(hsStream* s, hsResMgr* mgr)
{
hsRefCnt_SafeUnRef( fDeviceRef );
fDeviceRef = nil;
plObjInterface::Read(s, mgr);
fAmbient.Read(s);
fDiffuse.Read(s);
fSpecular.Read(s);
fLightToLocal.Read(s);
fLocalToLight.Read(s);
fLightToWorld.Read(s);
fWorldToLight.Read(s);
fLocalToWorld = fLightToWorld * fLocalToLight;
fWorldToLocal = fLightToLocal * fWorldToLight;
mgr->ReadKeyNotifyMe(s, TRACKED_NEW plGenRefMsg(GetKey(), plRefMsg::kOnCreate, 0, kProjection), plRefFlags::kActiveRef);
mgr->ReadKeyNotifyMe(s, TRACKED_NEW plGenRefMsg(GetKey(), plRefMsg::kOnCreate, 0, kSoftVolume), plRefFlags::kActiveRef);
// Let our sceneNode know we're here.
plKey nodeKey = mgr->ReadKey(s);
ISetSceneNode(nodeKey);
int n = s->ReadSwap32();
fVisRegions.SetCountAndZero(n);
int i;
for( i = 0; i < n; i++ )
mgr->ReadKeyNotifyMe(s, TRACKED_NEW plGenRefMsg(GetKey(), plRefMsg::kOnCreate, 0, kVisRegion), plRefFlags::kActiveRef);
SetDirty(true);
}
void plLightInfo::Write(hsStream* s, hsResMgr* mgr)
{
plObjInterface::Write(s, mgr);
fAmbient.Write(s);
fDiffuse.Write(s);
fSpecular.Write(s);
fLightToLocal.Write(s);
fLocalToLight.Write(s);
fLightToWorld.Write(s);
fWorldToLight.Write(s);
mgr->WriteKey(s, GetProjection());
mgr->WriteKey(s, fSoftVolume);
mgr->WriteKey(s, fSceneNode);
s->WriteSwap32(fVisRegions.GetCount());
int i;
for( i = 0; i < fVisRegions.GetCount(); i++ )
mgr->WriteKey(s, fVisRegions[i]);
}
// These two should only be called by the SceneObject
void plLightInfo::ISetSceneNode(plKey node)
{
if( node != fSceneNode )
{
if( node )
{
plNodeRefMsg* refMsg = TRACKED_NEW plNodeRefMsg(node, plRefMsg::kOnCreate, -1, plNodeRefMsg::kLight);
hsgResMgr::ResMgr()->AddViaNotify(GetKey(), refMsg, plRefFlags::kPassiveRef);
}
if( fSceneNode )
{
fSceneNode->Release(GetKey());
}
}
fSceneNode = node;
if( fSceneNode != nil )
{
if( !fRegisteredForRenderMsg )
{
plgDispatch::Dispatch()->RegisterForExactType(plRenderMsg::Index(), GetKey());
plgDispatch::Dispatch()->RegisterForExactType(plPipeRTMakeMsg::Index(), GetKey());
fRegisteredForRenderMsg = true;
}
}
else if( fRegisteredForRenderMsg )
{
plgDispatch::Dispatch()->UnRegisterForExactType(plRenderMsg::Index(), GetKey());
plgDispatch::Dispatch()->UnRegisterForExactType(plPipeRTMakeMsg::Index(), GetKey());
fRegisteredForRenderMsg = false;
}
}
plKey plLightInfo::GetSceneNode() const
{
return fSceneNode;
}
//// Link & Unlink ///////////////////////////////////////////////////////
void plLightInfo::Unlink( void )
{
hsAssert( fPrevDevPtr, "Light info not in list" );
if( fNextDevPtr )
fNextDevPtr->fPrevDevPtr = fPrevDevPtr;
*fPrevDevPtr = fNextDevPtr;
fNextDevPtr = nil;
fPrevDevPtr = nil;
}
void plLightInfo::Link( plLightInfo **back )
{
hsAssert( fNextDevPtr == nil && fPrevDevPtr == nil, "Trying to link a lightInfo that's already linked" );
fNextDevPtr = *back;
if( *back )
(*back)->fPrevDevPtr = &fNextDevPtr;
fPrevDevPtr = back;
*back = this;
}
//////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////
///// Standard light types
//////////////////////////////////////////////////////////////////////////
//////////////////////////////////////////////////////////////////////////
// Directional
plDirectionalLightInfo::plDirectionalLightInfo()
{
}
plDirectionalLightInfo::~plDirectionalLightInfo()
{
}
void plDirectionalLightInfo::GetStrengthAndScale(const hsBounds3Ext& bnd, hsScalar& strength, hsScalar& scale) const
{
plLightInfo::GetStrengthAndScale(bnd, strength, scale);
}
void plDirectionalLightInfo::Read(hsStream* s, hsResMgr* mgr)
{
plLightInfo::Read(s, mgr);
}
void plDirectionalLightInfo::Write(hsStream* s, hsResMgr* mgr)
{
plLightInfo::Write(s, mgr);
}
hsVector3 plDirectionalLightInfo::GetWorldDirection() const
{
return -fLightToWorld.GetAxis( hsMatrix44::kUp );
}
//////////////////////////////////////////////////////////////////////////
// Limited Directional
plLimitedDirLightInfo::plLimitedDirLightInfo()
: fParPlanes(nil)
{
}
plLimitedDirLightInfo::~plLimitedDirLightInfo()
{
delete fParPlanes;
}
void plLimitedDirLightInfo::IRefresh()
{
plLightInfo::IRefresh();
if( !IGetIsect() )
IMakeIsect();
if( GetProjection() )
{
hsMatrix44 l2ndc;
l2ndc.Reset();
hsScalar width = fWidth;
hsScalar height = fHeight;
l2ndc.fMap[0][0] = 1.f / width;
l2ndc.fMap[0][3] = 0.5f;
l2ndc.fMap[1][1] = -1.f / height;
l2ndc.fMap[1][3] = 0.5f;
// Map Screen Z to range 0 (at hither) to 1 (at yon)
// No, map z dead on to 1.f
l2ndc.fMap[2][2] = 1.f / fDepth;
l2ndc.fMap[2][3] = 0;
l2ndc.fMap[3][3] = 1.f;
l2ndc.NotIdentity();
fWorldToProj = l2ndc * fWorldToLight;
}
}
void plLimitedDirLightInfo::GetStrengthAndScale(const hsBounds3Ext& bnd, hsScalar& strength, hsScalar& scale) const
{
// If we haven't culled the object, return that we're full strength.
plLightInfo::GetStrengthAndScale(bnd, strength, scale);
}
void plLimitedDirLightInfo::Read(hsStream* s, hsResMgr* mgr)
{
plDirectionalLightInfo::Read(s, mgr);
fWidth = s->ReadSwapScalar();
fHeight = s->ReadSwapScalar();
fDepth = s->ReadSwapScalar();
}
void plLimitedDirLightInfo::Write(hsStream* s, hsResMgr* mgr)
{
plDirectionalLightInfo::Write(s, mgr);
s->WriteSwapScalar(fWidth);
s->WriteSwapScalar(fHeight);
s->WriteSwapScalar(fDepth);
}
void plLimitedDirLightInfo::IMakeIsect()
{
if( !fParPlanes )
fParPlanes = TRACKED_NEW plParallelIsect;
fParPlanes->SetNumPlanes(3);
hsPoint3 p0, p1;
hsScalar width = fWidth;
hsScalar height = fHeight;
p0.Set(-width*0.5f, 0, 0);
p1.Set(width*0.5f, 0, 0);
fParPlanes->SetPlane(0, p0, p1);
p0.Set(0, -height * 0.5f, 0);
p1.Set(0, height * 0.5f, 0);
fParPlanes->SetPlane(1, p0, p1);
p0.Set(0, 0, 0);
p1.Set(0, 0, -fDepth);
fParPlanes->SetPlane(2, p0, p1);
fParPlanes->SetTransform(fLightToWorld, fWorldToLight);
}
//// ICreateProxy //////////////////////////////////////////////////////
// Creates a new box drawable for showing the light's
// influence.
plDrawableSpans* plLimitedDirLightInfo::CreateProxy(hsGMaterial* mat, hsTArray<UInt32>& idx, plDrawableSpans* addTo)
{
hsPoint3 corner;
corner.Set(-fWidth*0.5f, -fHeight*0.5f, -fDepth);
hsVector3 vecs[3];
vecs[0].Set(fWidth, 0, 0);
vecs[1].Set(0, fHeight, 0);
vecs[2].Set(0, 0, fDepth);
// Generate a rectangular drawable based on a corner and three vectors
plDrawableSpans* draw = plDrawableGenerator::GenerateBoxDrawable( corner, vecs[0], vecs[1], vecs[2],
mat,
fLightToWorld,
true,
nil,
&idx,
addTo );
return draw;
}
//////////////////////////////////////////////////////////////////////////
// Omni
plOmniLightInfo::plOmniLightInfo()
: fAttenConst(0),
fAttenLinear(1.f),
fAttenQuadratic(0),
fAttenCutoff(0),
fSphere(nil)
{
}
plOmniLightInfo::~plOmniLightInfo()
{
delete fSphere;
}
void plOmniLightInfo::IMakeIsect()
{
fSphere = TRACKED_NEW plSphereIsect;
fSphere->SetTransform(fLightToWorld, fWorldToLight);
}
void plOmniLightInfo::GetStrengthAndScale(const hsBounds3Ext& bnd, hsScalar& strength, hsScalar& scale) const
{
plLightInfo::GetStrengthAndScale(bnd, strength, scale);
// Volume - Want to base this on the closest point on the bounds, instead of just the center.
const hsPoint3& pos = bnd.GetCenter();
hsScalar dist = hsVector3(&pos, &GetWorldPosition()).MagnitudeSquared();
dist = 1.f / hsFastMath::InvSqrtAppr(dist);
if( fAttenQuadratic > 0 )
{
strength /= (fAttenConst + fAttenLinear * dist + fAttenQuadratic * dist * dist);
}
else if( fAttenLinear > 0 )
{
strength /= (fAttenConst + fAttenLinear * dist);
}
else if( fAttenConst > 0 )
{
strength /= fAttenConst;
}
else if( fAttenCutoff > 0 )
{
if( dist > fAttenCutoff )
strength = 0;
}
}
hsScalar plOmniLightInfo::GetRadius() const
{
hsScalar radius = 0;
if( fAttenQuadratic > 0 )
{
hsScalar mult = fDiffuse.a >= 0 ? fDiffuse.a : -fDiffuse.a;
hsScalar det = fAttenLinear*fAttenLinear - 4.f * fAttenQuadratic * fAttenConst * (1.f - mult * plSillyLightKonstants::GetFarPowerKonst());
if( det > 0 )
{
det = hsSquareRoot(det);
radius = -fAttenLinear + det;
radius /= fAttenQuadratic * 2.f;
if( radius < 0 )
radius = 0;
}
}
else if( fAttenLinear > 0 )
{
hsScalar mult = fDiffuse.a >= 0 ? fDiffuse.a : -fDiffuse.a;
radius = (mult * plSillyLightKonstants::GetFarPowerKonst() - 1.f ) * fAttenConst / fAttenLinear;
}
else if( fAttenCutoff > 0 )
{
radius = fAttenCutoff;
}
return radius;
}
void plOmniLightInfo::IRefresh()
{
plLightInfo::IRefresh();
if( IsAttenuated() )
{
if( !fSphere )
IMakeIsect();
fSphere->SetRadius(GetRadius());
}
else
{
delete fSphere;
fSphere = nil;
}
}
hsVector3 plOmniLightInfo::GetNegativeWorldDirection(const hsPoint3& pos) const
{
return hsFastMath::NormalizeAppr(hsVector3(&GetWorldPosition(), &pos));
}
void plOmniLightInfo::Read(hsStream* s, hsResMgr* mgr)
{
plLightInfo::Read(s, mgr);
fAttenConst = s->ReadSwapScalar();
fAttenLinear = s->ReadSwapScalar();
fAttenQuadratic = s->ReadSwapScalar();
fAttenCutoff = s->ReadSwapScalar();
}
void plOmniLightInfo::Write(hsStream* s, hsResMgr* mgr)
{
plLightInfo::Write(s, mgr);
s->WriteSwapScalar(fAttenConst);
s->WriteSwapScalar(fAttenLinear);
s->WriteSwapScalar(fAttenQuadratic);
s->WriteSwapScalar( fAttenCutoff );
}
//// ICreateProxy //////////////////////////////////////////////////////
// Creates a new sphere drawable for showing the omnilight's
// sphere (haha) of influence.
plDrawableSpans* plOmniLightInfo::CreateProxy(hsGMaterial* mat, hsTArray<UInt32>& idx, plDrawableSpans* addTo)
{
float rad = GetRadius();
if( rad == 0 )
rad = 50;
plDrawableSpans* draw = plDrawableGenerator::GenerateSphericalDrawable(hsPoint3(0,0,0),
rad,
mat,
fLightToWorld,
true,
nil,
&idx,
addTo);
return draw;
}
//////////////////////////////////////////////////////////////////////////
// Spot
plSpotLightInfo::plSpotLightInfo()
: fFalloff(1.f),
fSpotInner(hsScalarPI * 0.125f),
fSpotOuter(hsScalarPI * 0.25f),
fCone(nil)
{
}
plSpotLightInfo::~plSpotLightInfo()
{
delete fCone;
}
void plSpotLightInfo::GetStrengthAndScale(const hsBounds3Ext& bnd, hsScalar& strength, hsScalar& scale) const
{
plOmniLightInfo::GetStrengthAndScale(bnd, strength, scale);
// Volume - Want to base this on the closest point on the bounds, instead of just the center.
const hsPoint3& pos = bnd.GetCenter();
hsVector3 del;
del.Set(&pos, &GetWorldPosition());
hsScalar invDist = del.MagnitudeSquared();
invDist = hsFastMath::InvSqrtAppr(invDist);
hsScalar dot = del.InnerProduct(GetWorldDirection());
dot *= invDist;
hsScalar cosInner, cosOuter, t;
hsFastMath::SinCosInRangeAppr(fSpotInner, t, cosInner);
hsFastMath::SinCosInRangeAppr(fSpotOuter, t, cosOuter);
if( dot < cosOuter )
strength = 0;
else if( dot < cosInner )
strength *= (dot - cosOuter) / (cosInner - cosOuter);
}
void plSpotLightInfo::IMakeIsect()
{
fCone = TRACKED_NEW plConeIsect;
fCone->SetTransform(fLightToWorld, fWorldToLight);
}
void plSpotLightInfo::IRefresh()
{
plLightInfo::IRefresh();
if( !fCone )
IMakeIsect();
hsScalar effFOV = fSpotOuter;
fCone->SetAngle(effFOV);
if( IsAttenuated() )
{
fCone->SetLength(GetRadius());
fCone->SetTransform(fLightToWorld, fWorldToLight);
}
if( GetProjection() )
{
hsScalar yon = GetRadius();
if( yon < kMinHither )
yon = kMaxYon;
hsScalar hither = hsMinimum(kMinHither, yon * 0.5f);
hsScalar sinFOV, cosFOV;
hsFastMath::SinCos(effFOV, sinFOV, cosFOV);
hsMatrix44 l2ndc;
l2ndc.Reset();
l2ndc.fMap[0][0] = cosFOV / sinFOV * 0.5f;
l2ndc.fMap[0][2] = -0.5f;
l2ndc.fMap[1][1] = -cosFOV / sinFOV * 0.5f;
l2ndc.fMap[1][2] = -0.5f;
l2ndc.fMap[2][2] = -yon / (yon - hither);
l2ndc.fMap[3][3] = 0;
l2ndc.fMap[3][2] = -1.f;
l2ndc.NotIdentity();
fWorldToProj = l2ndc * fWorldToLight;
}
}
void plSpotLightInfo::Read(hsStream* s, hsResMgr* mgr)
{
plOmniLightInfo::Read(s, mgr);
fFalloff = s->ReadSwapScalar();
fSpotInner = s->ReadSwapScalar();
fSpotOuter = s->ReadSwapScalar();
}
void plSpotLightInfo::Write(hsStream* s, hsResMgr* mgr)
{
plOmniLightInfo::Write(s, mgr);
s->WriteSwapScalar(fFalloff);
s->WriteSwapScalar(fSpotInner);
s->WriteSwapScalar(fSpotOuter);
}
hsVector3 plSpotLightInfo::GetWorldDirection() const
{
return -fLightToWorld.GetAxis( hsMatrix44::kUp );
}
//// ICreateProxy //////////////////////////////////////////////////////
// Generates a new drawable for showing the spotlight's
// sphere of influence.
plDrawableSpans* plSpotLightInfo::CreateProxy(hsGMaterial* mat, hsTArray<UInt32>& idx, plDrawableSpans* addTo)
{
float rad = GetRadius();
float x, y;
if( rad == 0 )
rad = 80;
hsFastMath::SinCosAppr( GetSpotOuter(), x, y );
plDrawableSpans* draw = plDrawableGenerator::GenerateConicalDrawable(rad * x / y, -rad,
mat,
fLightToWorld,
true,
nil,
&idx,
addTo);
return draw;
}