irrlicht/source/Irrlicht/CMetaTriangleSelector.cpp
cutealien 2ae2a551a6 Merging r5975 through r6036 from trunk to ogl-es branch.
GLES drivers adapted, but only did make compile-tests.


git-svn-id: svn://svn.code.sf.net/p/irrlicht/code/branches/ogl-es@6038 dfc29bdd-3216-0410-991c-e03cc46cb475
2020-01-03 19:05:16 +00:00

226 lines
5.9 KiB
C++

// 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, bool useNodeTransform,
irr::core::array<SCollisionTriangleRange>* outTriangleInfo) const
{
s32 outWritten = 0;
irr::u32 outTriangleInfoSize = outTriangleInfo ? outTriangleInfo->size() : 0;
for (u32 i=0; i<TriangleSelectors.size(); ++i)
{
s32 t = 0;
TriangleSelectors[i]->getTriangles(triangles + outWritten,
arraySize - outWritten, t, transform, useNodeTransform, outTriangleInfo);
if ( outTriangleInfo )
{
irr::u32 newTriangleInfoSize = outTriangleInfo->size();
for ( u32 ti=outTriangleInfoSize; ti<newTriangleInfoSize; ++ti )
{
(*outTriangleInfo)[ti].RangeStart += outWritten;
}
outTriangleInfoSize = newTriangleInfoSize;
}
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, bool useNodeTransform,
irr::core::array<SCollisionTriangleRange>* outTriangleInfo) const
{
s32 outWritten = 0;
irr::u32 outTriangleInfoSize = outTriangleInfo ? outTriangleInfo->size() : 0;
for (u32 i=0; i<TriangleSelectors.size(); ++i)
{
s32 t = 0;
TriangleSelectors[i]->getTriangles(triangles + outWritten,
arraySize - outWritten, t, box, transform, useNodeTransform, outTriangleInfo);
if ( outTriangleInfo )
{
irr::u32 newTriangleInfoSize = outTriangleInfo->size();
for ( u32 ti=outTriangleInfoSize; ti<newTriangleInfoSize; ++ti )
{
(*outTriangleInfo)[ti].RangeStart += outWritten;
}
outTriangleInfoSize = newTriangleInfoSize;
}
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, bool useNodeTransform,
irr::core::array<SCollisionTriangleRange>* outTriangleInfo) const
{
s32 outWritten = 0;
irr::u32 outTriangleInfoSize = outTriangleInfo ? outTriangleInfo->size() : 0;
for (u32 i=0; i<TriangleSelectors.size(); ++i)
{
s32 t = 0;
TriangleSelectors[i]->getTriangles(triangles + outWritten,
arraySize - outWritten, t, line, transform, useNodeTransform, outTriangleInfo);
if ( outTriangleInfo )
{
irr::u32 newTriangleInfoSize = outTriangleInfo->size();
for ( u32 ti=outTriangleInfoSize; ti<newTriangleInfoSize; ++ti )
{
(*outTriangleInfo)[ti].RangeStart += outWritten;
}
outTriangleInfoSize = newTriangleInfoSize;
}
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);
}
return 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