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// Copyright (C) 2002-2012 Nikolaus Gebhardt
// This file is part of the "Irrlicht Engine".
// For conditions of distribution and use, see copyright notice in irrlicht.h
#include "CMetaTriangleSelector.h"
namespace irr
{
namespace scene
{
//! constructor
CMetaTriangleSelector::CMetaTriangleSelector()
{
#ifdef _DEBUG
setDebugName("CMetaTriangleSelector");
#endif
}
//! destructor
CMetaTriangleSelector::~CMetaTriangleSelector()
{
removeAllTriangleSelectors();
}
//! Returns amount of all available triangles in this selector
s32 CMetaTriangleSelector::getTriangleCount() const
{
s32 count = 0;
for (u32 i=0; i<TriangleSelectors.size(); ++i)
count += TriangleSelectors[i]->getTriangleCount();
return count;
}
//! Gets all triangles.
void CMetaTriangleSelector::getTriangles(core::triangle3df* triangles, s32 arraySize,
s32& outTriangleCount, const core::matrix4* transform) const
{
s32 outWritten = 0;
for (u32 i=0; i<TriangleSelectors.size(); ++i)
{
s32 t = 0;
TriangleSelectors[i]->getTriangles(triangles + outWritten,
arraySize - outWritten, t, transform);
outWritten += t;
if (outWritten==arraySize)
break;
}
outTriangleCount = outWritten;
}
//! Gets all triangles which lie within a specific bounding box.
void CMetaTriangleSelector::getTriangles(core::triangle3df* triangles, s32 arraySize,
s32& outTriangleCount, const core::aabbox3d<f32>& box,
const core::matrix4* transform) const
{
s32 outWritten = 0;
for (u32 i=0; i<TriangleSelectors.size(); ++i)
{
s32 t = 0;
TriangleSelectors[i]->getTriangles(triangles + outWritten,
arraySize - outWritten, t, box, transform);
outWritten += t;
if (outWritten==arraySize)
break;
}
outTriangleCount = outWritten;
}
//! Gets all triangles which have or may have contact with a 3d line.
void CMetaTriangleSelector::getTriangles(core::triangle3df* triangles, s32 arraySize,
s32& outTriangleCount, const core::line3d<f32>& line,
const core::matrix4* transform) const
{
s32 outWritten = 0;
for (u32 i=0; i<TriangleSelectors.size(); ++i)
{
s32 t = 0;
TriangleSelectors[i]->getTriangles(triangles + outWritten,
arraySize - outWritten, t, line, transform);
outWritten += t;
if (outWritten==arraySize)
break;
}
outTriangleCount = outWritten;
}
//! Adds a triangle selector to the collection of triangle selectors
//! in this metaTriangleSelector.
void CMetaTriangleSelector::addTriangleSelector(ITriangleSelector* toAdd)
{
if (!toAdd)
return;
TriangleSelectors.push_back(toAdd);
toAdd->grab();
}
//! Removes a specific triangle selector which was added before from the collection.
bool CMetaTriangleSelector::removeTriangleSelector(ITriangleSelector* toRemove)
{
for (u32 i=0; i<TriangleSelectors.size(); ++i)
{
if (toRemove == TriangleSelectors[i])
{
TriangleSelectors[i]->drop();
TriangleSelectors.erase(i);
return true;
}
}
return false;
}
//! Removes all triangle selectors from the collection.
void CMetaTriangleSelector::removeAllTriangleSelectors()
{
for (u32 i=0; i<TriangleSelectors.size(); ++i)
TriangleSelectors[i]->drop();
TriangleSelectors.clear();
}
//! Return the scene node associated with a given triangle.
ISceneNode* CMetaTriangleSelector::getSceneNodeForTriangle(u32 triangleIndex) const
{
u32 totalTriangles = 0;
for (u32 i=0; i<TriangleSelectors.size(); ++i)
{
totalTriangles += TriangleSelectors[i]->getTriangleCount();
if(totalTriangles > triangleIndex)
return TriangleSelectors[i]->getSceneNodeForTriangle(0);
}
// For lack of anything more sensible, return the first selector.
return TriangleSelectors[0]->getSceneNodeForTriangle(0);
}
/* Return the number of TriangleSelectors that are inside this one,
Only useful for MetaTriangleSelector others return 1
*/
u32 CMetaTriangleSelector::getSelectorCount() const
{
return TriangleSelectors.size();
}
/* Returns the TriangleSelector based on index based on getSelectorCount
Only useful for MetaTriangleSelector others return 'this'
*/
ITriangleSelector* CMetaTriangleSelector::getSelector(u32 index)
{
if (index >= TriangleSelectors.size())
return 0;
return TriangleSelectors[index];
}
/* Returns the TriangleSelector based on index based on getSelectorCount
Only useful for MetaTriangleSelector others return 'this'
*/
const ITriangleSelector* CMetaTriangleSelector::getSelector(u32 index) const
{
if (index >= TriangleSelectors.size())
return 0;
return TriangleSelectors[index];
}
} // end namespace scene
} // end namespace irr
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