本文整理汇总了C#中Contour.AddFirst方法的典型用法代码示例。如果您正苦于以下问题：C# Contour.AddFirst方法的具体用法？C# Contour.AddFirst怎么用？C# Contour.AddFirst使用的例子？那么恭喜您, 这里精选的方法代码示例或许可以为您提供帮助。您也可以进一步了解该方法所在类Contour的用法示例。
在下文中一共展示了Contour.AddFirst方法的1个代码示例，这些例子默认根据受欢迎程度排序。您可以为喜欢或者感觉有用的代码点赞，您的评价将有助于系统推荐出更棒的C#代码示例。
示例1: TraceContour
public static Contour TraceContour( int a_iStartingPixelIndex, NeighborDirection a_eStartingDirection, int a_iContourLabel, BinarizedImage a_rBinarizedImage, int[ ] a_rLabelMap )
{
int iPixelIndexTrace;
NeighborDirection eDirectionNext = a_eStartingDirection;
FindNextPoint( a_iStartingPixelIndex, a_eStartingDirection, a_rBinarizedImage, a_rLabelMap, out iPixelIndexTrace, out eDirectionNext );
Contour oContour = new Contour( a_iContourLabel );
oContour.AddFirst( a_rBinarizedImage.PixelIndex2Coords( iPixelIndexTrace ) );
int iPreviousPixelIndex = a_iStartingPixelIndex;
int iCurrentPixelIndex = iPixelIndexTrace;
bool bDone = ( a_iStartingPixelIndex == iPixelIndexTrace );
// Choose a bias factor
// The bias factor points to exterior if tracing an outer contour
// The bias factor points to interior if tracing an inner contour
float fOrthoBiasFactor;
if( a_eStartingDirection == NeighborDirection.DirectionUpRight ) // inner contour
{
fOrthoBiasFactor = -0.2f;
}
else // outer contour
{
fOrthoBiasFactor = 0.2f;
}
while( bDone == false )
{
a_rLabelMap[ iCurrentPixelIndex ] = a_iContourLabel;
NeighborDirection eDirectionSearch = (NeighborDirection) ( ( (int) eDirectionNext + 6 ) % 8 );
int iNextPixelIndex;
FindNextPoint( iCurrentPixelIndex, eDirectionSearch, a_rBinarizedImage, a_rLabelMap, out iNextPixelIndex, out eDirectionNext );
iPreviousPixelIndex = iCurrentPixelIndex;
iCurrentPixelIndex = iNextPixelIndex;
bDone = ( iPreviousPixelIndex == a_iStartingPixelIndex && iCurrentPixelIndex == iPixelIndexTrace );
if( bDone == false )
{
// Apply some bias to inner and outer contours to avoid them overlap
// Use the orthogonal vector to direction
NeighborDirection eOrthoBiasDirection = (NeighborDirection) ( ( (int) eDirectionNext + 6 ) % 8 ); // == direction - 2 % 8 but easier to compute (always positive)
Vector2 f2Bias = fOrthoBiasFactor * BinarizedImage.GetDirectionVector( eOrthoBiasDirection );
// Add bias to pixel pos
Vector2 f2BiasedPos = f2Bias + a_rBinarizedImage.PixelIndex2Coords( iNextPixelIndex );
// Add biased pos to contour
oContour.AddFirst( f2BiasedPos );
}
}
return oContour;
}