BOX2D STROKE_FONT::computeBoundingBox( const GLYPH& aGLYPH, const VECTOR2D& aGLYPHBoundingX ) const
{
BOX2D boundingBox;
std::deque<VECTOR2D> boundingPoints;
boundingPoints.push_back( VECTOR2D( aGLYPHBoundingX.x, 0 ) );
boundingPoints.push_back( VECTOR2D( aGLYPHBoundingX.y, 0 ) );
for( GLYPH::const_iterator pointListIt = aGLYPH.begin(); pointListIt != aGLYPH.end(); ++pointListIt )
{
for( std::deque<VECTOR2D>::const_iterator pointIt = pointListIt->begin();
pointIt != pointListIt->end(); ++pointIt )
{
boundingPoints.push_back( VECTOR2D( aGLYPHBoundingX.x, pointIt->y ) );
}
}
boundingBox.Compute( boundingPoints );
return boundingBox;
}
bool STROKE_FONT::LoadNewStrokeFont( const char* const aNewStrokeFont[], int aNewStrokeFontSize )
{
m_glyphs.clear();
m_glyphBoundingBoxes.clear();
m_glyphs.resize( aNewStrokeFontSize );
m_glyphBoundingBoxes.resize( aNewStrokeFontSize );
for( int j = 0; j < aNewStrokeFontSize; j++ )
{
GLYPH glyph;
double glyphStartX = 0.0;
double glyphEndX = 0.0;
VECTOR2D glyphBoundingX;
std::deque<VECTOR2D> pointList;
int i = 0;
while( aNewStrokeFont[j][i] )
{
VECTOR2D point( 0.0, 0.0 );
char coordinate[2] = { 0, };
for( int k = 0; k < 2; k++ )
{
coordinate[k] = aNewStrokeFont[j][i + k];
}
if( i < 2 )
{
// The first two values contain the width of the char
glyphStartX = ( coordinate[0] - 'R' ) * STROKE_FONT_SCALE;
glyphEndX = ( coordinate[1] - 'R' ) * STROKE_FONT_SCALE;
glyphBoundingX = VECTOR2D( 0, glyphEndX - glyphStartX );
}
else if( ( coordinate[0] == ' ' ) && ( coordinate[1] == 'R' ) )
{
// Raise pen
if( pointList.size() > 0 )
glyph.push_back( pointList );
pointList.clear();
}
else
{
// In stroke font, coordinates values are coded as <value> + 'R',
// <value> is an ASCII char.
// therefore every coordinate description of the Hershey format has an offset,
// it has to be subtracted
// Note:
// * the stroke coordinates are stored in reduced form (-1.0 to +1.0),
// and the actual size is stroke coordinate * glyph size
// * a few shapes have a height slightly bigger than 1.0 ( like '{' '[' )
point.x = (double) ( coordinate[0] - 'R' ) * STROKE_FONT_SCALE - glyphStartX;
#define FONT_OFFSET -10
// FONT_OFFSET is here for historical reasons, due to the way the stroke font
// was built. It allows shapes coordinates like W M ... to be >= 0
// Only shapes like j y have coordinates < 0
point.y = (double) ( coordinate[1] - 'R' + FONT_OFFSET ) * STROKE_FONT_SCALE;
pointList.push_back( point );
}
i += 2;
}
if( pointList.size() > 0 )
glyph.push_back( pointList );
m_glyphs[j] = glyph;
// Compute the bounding box of the glyph
m_glyphBoundingBoxes[j] = computeBoundingBox( glyph, glyphBoundingX );
}
return true;
}
bool STROKE_FONT::LoadNewStrokeFont( const char* const aNewStrokeFont[], int aNewStrokeFontSize )
{
m_glyphs.clear();
m_glyphBoundingBoxes.clear();
m_glyphs.resize( aNewStrokeFontSize );
m_glyphBoundingBoxes.resize( aNewStrokeFontSize );
for( int j = 0; j < aNewStrokeFontSize; j++ )
{
GLYPH glyph;
double glyphStartX = 0.0;
double glyphEndX = 0.0;
VECTOR2D glyphBoundingX;
std::deque<VECTOR2D> pointList;
int i = 0;
while( aNewStrokeFont[j][i] )
{
VECTOR2D point( 0.0, 0.0 );
char coordinate[2] = { 0, };
for( int k = 0; k < 2; k++ )
{
coordinate[k] = aNewStrokeFont[j][i + k];
}
if( i < 2 )
{
// The first two values contain the width of the char
glyphStartX = ( coordinate[0] - 'R' ) * HERSHEY_SCALE;
glyphEndX = ( coordinate[1] - 'R' ) * HERSHEY_SCALE;
glyphBoundingX = VECTOR2D( 0, glyphEndX - glyphStartX );
}
else if( ( coordinate[0] == ' ' ) && ( coordinate[1] == 'R' ) )
{
// Raise pen
if( pointList.size() > 0 )
glyph.push_back( pointList );
pointList.clear();
}
else
{
// Every coordinate description of the Hershey format has an offset,
// it has to be subtracted
point.x = (double) ( coordinate[0] - 'R' ) * HERSHEY_SCALE - glyphStartX;
point.y = (double) ( coordinate[1] - 'R' ) * HERSHEY_SCALE;
pointList.push_back( point );
}
i += 2;
}
if( pointList.size() > 0 )
glyph.push_back( pointList );
m_glyphs[j] = glyph;
// Compute the bounding box of the glyph
m_glyphBoundingBoxes[j] = computeBoundingBox( glyph, glyphBoundingX );
}
return true;
}
