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Copy pathclipperWrapper.cpp
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75 lines (63 loc) · 1.67 KB
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#include "clipperWrapper.h"
float CClipperWrapper::m_scalingFactor = 1e10;
Paths CClipperWrapper::FindIntersection(const CRoom& room1, const CRoom& room2)
{
Path p1, p2;
p1.resize(room1.GetNumOfVertices());
p2.resize(room2.GetNumOfVertices());
for ( int i=0; i<room1.GetNumOfVertices(); i++ )
{
v2f pi = room1.GetVertex(i);
p1[i].X = ConvertFloatToLong64(pi[0]);
p1[i].Y = ConvertFloatToLong64(pi[1]);
}
for ( int i=0; i<room2.GetNumOfVertices(); i++ )
{
v2f pi = room2.GetVertex(i);
p2[i].X = ConvertFloatToLong64(pi[0]);
p2[i].Y = ConvertFloatToLong64(pi[1]);
}
ClipType ct = ctIntersection;
PolyFillType pft = pftNonZero;
Paths sub, clp, sol;
Clipper c;
c.AddPath(p1, ptSubject, true);
c.AddPath(p2, ptClip, true);
c.Execute(ct, sol, pft, pft);
return sol;
}
float CClipperWrapper::ComputeCollideArea(const CRoom& room1, const CRoom& room2)
{
Paths sol = FindIntersection(room1, room2);
float collideArea = 0.f;
for ( int i=0; i<int(sol.size()); i++ )
{
double a = Area(sol[i]);
collideArea += std::abs(ConvertDoubleAreaToFloat(a));
}
if (collideArea < 10e-4)
{
collideArea = 0;
}
return collideArea;
}
float CClipperWrapper::ComputeRoomArea(const CRoom& room)
{
return ComputeCollideArea(room, room);
}
long64 CClipperWrapper::ConvertFloatToLong64(float f)
{
long64 i = long64(f * m_scalingFactor + 0.5f);
return i;
}
float CClipperWrapper::ConvertLong64ToFloat(long64 i)
{
float f = float(i) / m_scalingFactor;
return f;
}
float CClipperWrapper::ConvertDoubleAreaToFloat(double a)
{
a = a / double(m_scalingFactor * m_scalingFactor);
float f = float(a);
return f;
}