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firestorm/Gameleap/code/mw4/Libraries/mlr/MLRLineCloud.cpp
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8.6 KiB
C++

#include "MLRHeaders.hpp"
#if !defined(MLR_MLRCLIPTRICK_HPP)
#include <MLR\MLRClipTrick.hpp>
#endif
//#############################################################################
//######################### MLRLineCloud ###############################
//#############################################################################
MLRLineCloud::ClassData*
MLRLineCloud::DefaultData = NULL;
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
void
MLRLineCloud::InitializeClass()
{
Verify(!DefaultData);
Verify(gos_GetCurrentHeap() == StaticHeap);
DefaultData =
new ClassData(
MLRLineCloudClassID,
"MidLevelRenderer::MLRLineCloud",
MLREffect::DefaultData
);
Register_Object(DefaultData);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
void
MLRLineCloud::TerminateClass()
{
Unregister_Object(DefaultData);
delete DefaultData;
DefaultData = NULL;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
MLRLineCloud::MLRLineCloud(int nr, int _type) :
MLREffect(2*nr, DefaultData), type(_type)
{
Verify(gos_GetCurrentHeap() == EffectHeap);
usedNrOfVertices = 0;
#ifdef LAB_ONLY
if(maxNrOf > Limits::Max_Number_Vertices_Per_Effect)
{
STOP(("too many vertices in linecloud"));
}
#endif
Check_Pointer(this);
drawMode = SortData::LineCloud;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
MLRLineCloud::~MLRLineCloud()
{
Check_Object(this);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
void
MLRLineCloud::SetData(
const int *count,
const Stuff::Point3D *point_data,
const Stuff::RGBAColor *color_data
)
{
Check_Pointer(this);
usedNrOfVertices = count;
#ifdef LAB_ONLY
if( (*usedNrOfVertices > maxNrOf) || (*usedNrOfVertices > Limits::Max_Number_Vertices_Per_Effect) )
{
STOP(("too many vertices in linecloud"));
}
#endif
points = point_data;
colors = color_data;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
void
MLRLineCloud::Draw (DrawEffectInformation *dInfo, GOSVertexPool *allVerticesToDraw, MLRSorter *sorter)
{
Check_Object(this);
#ifdef LAB_ONLY
if( (*usedNrOfVertices > maxNrOf) || (*usedNrOfVertices > Limits::Max_Number_Vertices_Per_Effect) )
{
STOP(("too many vertices in linecloud"));
}
#endif
worldToEffect.Invert(*dInfo->effectToWorld);
Transform(*usedNrOfVertices, 1);
if( Clip(dInfo->clippingFlags, allVerticesToDraw, false) )
{
sorter->AddEffect(this, dInfo->state);
}
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
int
MLRLineCloud::Draw (ToBeDrawnPrimitive *tbdp, MLRSorter *sorter)
{
Check_Object(this);
effectToClipMatrix = tbdp->shapeToClipMatrix;
Transform(*usedNrOfVertices, 1);
int index = -1;
if( Clip(tbdp->clippingFlags, tbdp->allVerticesToDraw, true) )
{
sorter->AddEffect(this, tbdp->state, index);
}
return index;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
void
MLRLineCloud::Transform(int, int)
{
Check_Object(this);
MLR_RENDER("Transform::MLRLineCloud");
Start_Timer(Transform_Time);
int i;
#ifdef LAB_ONLY
if( (*usedNrOfVertices > maxNrOf) || (*usedNrOfVertices > Limits::Max_Number_Vertices_Per_Effect) )
{
STOP(("too many vertices in linecloud"));
}
#endif
for(i=0;i<*usedNrOfVertices;i++)
{
if(IsOn(i) == false)
{
continue;
}
(*transformedCoords)[i].Multiply(points[i], effectToClipMatrix);
}
Stop_Timer(Transform_Time);
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
int
MLRLineCloud::Clip(MLRClippingState clippingFlags, GOSVertexPool *vt, bool db)
{
//--------------------------------------
// See if we don't have to draw anything
//--------------------------------------
//
int i;
numGOSVertices = 0;
if(clippingFlags.GetClippingState() == 0 || usedNrOfVertices <= 0)
{
if(usedNrOfVertices <= 0)
{
visible = 0;
}
else
{
Check_Object(vt);
gos_vertices = vt->GetActualVertexPool(db);
for(i=0;i<*usedNrOfVertices;i++)
{
if(IsOn(i) == false)
{
continue;
}
GOSCopyData(
&gos_vertices[numGOSVertices],
transformedCoords->GetData(),
colors,
i
);
numGOSVertices++;
}
if(db==false)
{
Check_Object(vt);
vt->Increase(numGOSVertices);
}
visible = numGOSVertices ? 1 : 0;
}
return visible;
}
Check_Object(vt);
gos_vertices = vt->GetActualVertexPool(db);
Stuff::Vector4D *v4d = transformedCoords->GetData();
MLRClippingState theAnd, theOr, startClip, endClip;
for(i=0;i<*usedNrOfVertices;i+=2)
{
if(IsOn(i) == false)
{
continue;
}
startClip.Clip4dVertex(v4d+i);
endClip.Clip4dVertex(v4d+i+1);
theAnd = *(int *)&startClip & *(int *)&endClip;
theOr = *(int *)&startClip | *(int *)&endClip;
if(theAnd!=0)
{
continue;
}
if(theOr==0)
{
GOSCopyData(
&gos_vertices[numGOSVertices],
v4d,
colors,
i
);
numGOSVertices++;
GOSCopyData(
&gos_vertices[numGOSVertices],
v4d,
colors,
i+1
);
numGOSVertices++;
continue;
}
Scalar a=0.0f;
int l, ct=0, mask;
if(theOr.GetNumberOfSetBits()==1)
{
Stuff::Vector4D p4d;
RGBAColor cc;
mask = 1;
ct = 0;
a = 0.0f;
for (l=0; l<MLRClippingState::NextBit; l++)
{
if(theOr.IsClipped(mask))
{
//
//-------------------------------------------
// Find the clipping interval from bc0 to bc1
//-------------------------------------------
//
a = GetLerpFactor(l, (*transformedCoords)[i], (*transformedCoords)[i+1]);
Verify(a >= 0.0f && a <= 1.0f);
ct = l;
break;
}
mask <<= 1;
}
p4d.Lerp(
(*transformedCoords)[i],
(*transformedCoords)[i+1],
a
);
DoClipTrick(p4d, ct);
cc.Lerp(
colors[i],
colors[i+1],
a
);
if(startClip==0)
{
GOSCopyData(
&gos_vertices[numGOSVertices],
transformedCoords->GetData(),
colors,
i
);
numGOSVertices++;
GOSCopyData(
&gos_vertices[numGOSVertices],
&p4d,
&cc,
0
);
numGOSVertices++;
}
else
{
GOSCopyData(
&gos_vertices[numGOSVertices],
&p4d,
&cc,
0
);
numGOSVertices++;
GOSCopyData(
&gos_vertices[numGOSVertices],
transformedCoords->GetData(),
colors,
i+1
);
numGOSVertices++;
}
}
else
{
Stuff::Vector4D p4d0, p4d1;
RGBAColor cc0, cc1;
p4d0 = (*transformedCoords)[i];
p4d1 = (*transformedCoords)[i+1];
cc0 = colors[i];
cc1 = colors[i+1];
mask = 1;
ct = 0;
a = 0.0f;
for(l=0; l<MLRClippingState::NextBit; l++)
{
if(theOr.IsClipped(mask))
{
//
//-----------------------------------
// Clip each vertex against the plane
//-----------------------------------
//
if(startClip.IsClipped(mask))
{
a = GetLerpFactor(l, p4d0, p4d1);
Verify(a >= 0.0f && a <= 1.0f);
p4d0.Lerp(
p4d0,
p4d1,
a
);
DoClipTrick(p4d0, l);
startClip.Clip4dVertex(&p4d0);
cc0.Lerp(
cc0,
cc1,
a
);
}
if(endClip.IsClipped(mask))
{
a = GetLerpFactor(l, p4d0, p4d1);
Verify(a >= 0.0f && a <= 1.0f);
p4d1.Lerp(
p4d0,
p4d1,
a
);
DoClipTrick(p4d1, l);
endClip.Clip4dVertex(&p4d1);
cc1.Lerp(
cc0,
cc1,
a
);
}
}
if(*(int *)&startClip & *(int *)&endClip)
{
break;
}
mask = mask << 1;
}
if(l==MLRClippingState::NextBit)
{
GOSCopyData(
&gos_vertices[numGOSVertices],
&p4d0,
&cc0,
0
);
numGOSVertices++;
GOSCopyData(
&gos_vertices[numGOSVertices],
&p4d1,
&cc1,
0
);
numGOSVertices++;
}
}
}
if(db==false)
{
vt->Increase(numGOSVertices);
}
visible = numGOSVertices ? 1 : 0;
return visible;
}
//~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
//
void
MLRLineCloud::TestInstance() const
{
if (usedNrOfVertices)
{
Verify(*usedNrOfVertices >= 0);
Verify(*usedNrOfVertices <= maxNrOf);
}
}