//-----------------------------------------------------------------------
void Polygon::updateNormal( void ) const
{
OgreAssertDbg( getVertexCount() >= 3, "Insufficient vertex count!" );
if (mIsNormalSet)
return;
// vertex order is ccw
const Vector3& a = getVertex( 0 );
const Vector3& b = getVertex( 1 );
const Vector3& c = getVertex( 2 );
// used method: Newell
mNormal.x = 0.5f * ( (a.y - b.y) * (a.z + b.z) +
(b.y - c.y) * (b.z + c.z) +
(c.y - a.y) * (c.z + a.z));
mNormal.y = 0.5f * ( (a.z - b.z) * (a.x + b.x) +
(b.z - c.z) * (b.x + c.x) +
(c.z - a.z) * (c.x + a.x));
mNormal.z = 0.5f * ( (a.x - b.x) * (a.y + b.y) +
(b.x - c.x) * (b.y + c.y) +
(c.x - a.x) * (c.y + a.y));
mNormal.normalise();
mIsNormalSet = true;
}
//-----------------------------------------------------------------------
void Polygon::setVertex(const Vector3& vdata, size_t vertex )
{
// TODO: optional: check planarity
OgreAssertDbg(vertex < getVertexCount(), "Search position out of range" );
// set new vertex
mVertexList[ vertex ] = vdata;
}
//-----------------------------------------------------------------------
void Polygon::deleteVertex( size_t vertex )
{
OgreAssertDbg( vertex < getVertexCount(), "Search position out of range" );
VertexList::iterator it = mVertexList.begin();
std::advance(it, vertex);
mVertexList.erase( it );
}
//-----------------------------------------------------------------------
void Polygon::insertVertex(const Vector3& vdata, size_t vertex )
{
// TODO: optional: check planarity
OgreAssertDbg(vertex <= getVertexCount(), "Insert position out of range" );
VertexList::iterator it = mVertexList.begin();
std::advance(it, vertex);
mVertexList.insert(it, vdata);
}
GLenum GL3PlusPixelUtil::getGLOriginFormat(PixelFormat pf)
{
OgreAssertDbg(sizeof(_pixelFormats)/sizeof(GLPixelFormatDescription) == PF_COUNT, "Did you add a new format?");
return _pixelFormats[pf].format;
}
//---------------------------------------------------------------------
Real AnimationTrack::getKeyFramesAtTime(const TimeIndex& timeIndex, KeyFrame** keyFrame1, KeyFrame** keyFrame2,
unsigned short* firstKeyIndex) const
{
// Parametric time
// t1 = time of previous keyframe
// t2 = time of next keyframe
Real t1, t2;
Real timePos = timeIndex.getTimePos();
// Find first keyframe after or on current time
KeyFrameList::const_iterator i;
if (timeIndex.hasKeyIndex())
{
// Global keyframe index available, map to local keyframe index directly.
assert(timeIndex.getKeyIndex() < mKeyFrameIndexMap.size());
i = mKeyFrames.begin() + mKeyFrameIndexMap[timeIndex.getKeyIndex()];
#if OGRE_DEBUG_MODE
KeyFrame timeKey(0, timePos);
if (i != std::lower_bound(mKeyFrames.begin(), mKeyFrames.end(), &timeKey, KeyFrameTimeLess()))
{
OGRE_EXCEPT(Exception::ERR_INTERNAL_ERROR,
"Optimised key frame search failed",
"AnimationTrack::getKeyFramesAtTime");
}
#endif
}
else
{
// Wrap time
Real totalAnimationLength = mParent->getLength();
OgreAssertDbg(totalAnimationLength > 0.0f, "Invalid animation length!");
if( timePos > totalAnimationLength && totalAnimationLength > 0.0f )
timePos = std::fmod( timePos, totalAnimationLength );
// No global keyframe index, need to search with local keyframes.
KeyFrame timeKey(0, timePos);
i = std::lower_bound(mKeyFrames.begin(), mKeyFrames.end(), &timeKey, KeyFrameTimeLess());
}
if (i == mKeyFrames.end())
{
// There is no keyframe after this time, wrap back to first
*keyFrame2 = mKeyFrames.front();
t2 = mParent->getLength() + (*keyFrame2)->getTime();
// Use last keyframe as previous keyframe
--i;
}
else
{
*keyFrame2 = *i;
t2 = (*keyFrame2)->getTime();
// Find last keyframe before or on current time
if (i != mKeyFrames.begin() && timePos < (*i)->getTime())
{
--i;
}
}
// Fill index of the first key
if (firstKeyIndex)
{
*firstKeyIndex = static_cast<unsigned short>(std::distance(mKeyFrames.begin(), i));
}
*keyFrame1 = *i;
t1 = (*keyFrame1)->getTime();
if (t1 == t2)
{
// Same KeyFrame (only one)
return 0.0;
}
else
{
return (timePos - t1) / (t2 - t1);
}
}
//-----------------------------------------------------------------------
const Vector3& Polygon::getVertex( size_t vertex ) const
{
OgreAssertDbg(vertex < getVertexCount(), "Search position out of range");
return mVertexList[vertex];
}