FT_Outline_GetOutsideBorder( FT_Outline* outline )
{
FT_Orientation o = FT_Outline_Get_Orientation( outline );
return o == FT_ORIENTATION_TRUETYPE ? FT_STROKER_BORDER_LEFT
: FT_STROKER_BORDER_RIGHT ;
}
static PyObject*
Py_Outline_get_orientation(Py_Outline* self, PyObject* args, PyObject* kwds)
{
int orientation;
orientation = FT_Outline_Get_Orientation(&self->x);
return Py_Constant_cnew(&Py_FT_ORIENTATION_ConstantType, orientation);
}
unsigned int get_contour_type(FT_Outline& outline, unsigned int c)
{
FT_Orientation orientation = FT_Outline_Get_Orientation(&outline);
unsigned int order = get_contour_order(outline, c);
if (orientation==FT_ORIENTATION_TRUETYPE && order==kOrderCounterClockwise)
return kContourTypeInner;
else if (orientation==FT_ORIENTATION_TRUETYPE && order==kOrderClockwise)
return kContourTypeOuter;
else if (orientation==FT_ORIENTATION_POSTSCRIPT && order==kOrderCounterClockwise)
return kContourTypeOuter;
else if (orientation==FT_ORIENTATION_POSTSCRIPT && order==kOrderClockwise)
return kContourTypeInner;
else
return -1;
}
// 新的加粗函数
FT_Error New_FT_Outline_Embolden( FT_Outline* outline, FT_Pos str_h, FT_Pos str_v )
{
int orientation;
if ( !outline )
return FT_Err_Invalid_Argument;
orientation = FT_Outline_Get_Orientation( outline );
if ( orientation == FT_ORIENTATION_NONE )
if ( outline->n_contours )
return FT_Err_Invalid_Argument;
Vert_FT_Outline_Embolden( outline, str_v );
Old_FT_Outline_Embolden( outline, str_h );
return FT_Err_Ok;
}
FT_Outline_Embolden( FT_Outline* outline,
FT_Pos strength )
{
FT_Vector* points;
FT_Vector v_prev, v_first, v_next, v_cur;
FT_Angle rotate, angle_in, angle_out;
FT_Int c, n, first;
FT_Int orientation;
if ( !outline )
return FT_Err_Invalid_Argument;
strength /= 2;
if ( strength == 0 )
return FT_Err_Ok;
orientation = FT_Outline_Get_Orientation( outline );
if ( orientation == FT_ORIENTATION_NONE )
{
if ( outline->n_contours )
return FT_Err_Invalid_Argument;
else
return FT_Err_Ok;
}
if ( orientation == FT_ORIENTATION_TRUETYPE )
rotate = -FT_ANGLE_PI2;
else
rotate = FT_ANGLE_PI2;
points = outline->points;
first = 0;
for ( c = 0; c < outline->n_contours; c++ )
{
int last = outline->contours[c];
v_first = points[first];
v_prev = points[last];
v_cur = v_first;
for ( n = first; n <= last; n++ )
{
FT_Vector in, out;
FT_Angle angle_diff;
FT_Pos d;
FT_Fixed scale;
if ( n < last )
v_next = points[n + 1];
else
v_next = v_first;
/* compute the in and out vectors */
in.x = v_cur.x - v_prev.x;
in.y = v_cur.y - v_prev.y;
out.x = v_next.x - v_cur.x;
out.y = v_next.y - v_cur.y;
angle_in = FT_Atan2( in.x, in.y );
angle_out = FT_Atan2( out.x, out.y );
angle_diff = FT_Angle_Diff( angle_in, angle_out );
scale = FT_Cos( angle_diff / 2 );
if ( scale < 0x4000L && scale > -0x4000L )
in.x = in.y = 0;
else
{
d = FT_DivFix( strength, scale );
FT_Vector_From_Polar( &in, d, angle_in + angle_diff / 2 - rotate );
}
outline->points[n].x = v_cur.x + strength + in.x;
outline->points[n].y = v_cur.y + strength + in.y;
v_prev = v_cur;
v_cur = v_next;
}
first = last + 1;
}
return FT_Err_Ok;
}
FT_Outline_EmboldenXY( FT_Outline* outline,
FT_Pos xstrength,
FT_Pos ystrength )
{
FT_Vector* points;
FT_Vector v_prev, v_first, v_next, v_cur;
FT_Int c, n, first;
FT_Int orientation;
if ( !outline )
return FT_Err_Invalid_Argument;
xstrength /= 2;
ystrength /= 2;
if ( xstrength == 0 && ystrength == 0 )
return FT_Err_Ok;
orientation = FT_Outline_Get_Orientation( outline );
if ( orientation == FT_ORIENTATION_NONE )
{
if ( outline->n_contours )
return FT_Err_Invalid_Argument;
else
return FT_Err_Ok;
}
points = outline->points;
first = 0;
for ( c = 0; c < outline->n_contours; c++ )
{
FT_Vector in, out, shift;
FT_Fixed l_in, l_out, l, q, d;
int last = outline->contours[c];
v_first = points[first];
v_prev = points[last];
v_cur = v_first;
/* compute the incoming vector and its length */
in.x = v_cur.x - v_prev.x;
in.y = v_cur.y - v_prev.y;
l_in = FT_Vector_Length( &in );
for ( n = first; n <= last; n++ )
{
if ( n < last )
v_next = points[n + 1];
else
v_next = v_first;
/* compute the outgoing vector and its length */
out.x = v_next.x - v_cur.x;
out.y = v_next.y - v_cur.y;
l_out = FT_Vector_Length( &out );
d = l_in * l_out + in.x * out.x + in.y * out.y;
/* shift only if turn is less then ~160 degrees */
if ( 16 * d > l_in * l_out )
{
/* shift components are aligned along bisector */
/* and directed according to the outline orientation. */
shift.x = l_out * in.y + l_in * out.y;
shift.y = l_out * in.x + l_in * out.x;
if ( orientation == FT_ORIENTATION_TRUETYPE )
shift.x = -shift.x;
else
shift.y = -shift.y;
/* threshold strength to better handle collapsing segments */
l = FT_MIN( l_in, l_out );
q = out.x * in.y - out.y * in.x;
if ( orientation == FT_ORIENTATION_TRUETYPE )
q = -q;
if ( FT_MulDiv( xstrength, q, l ) < d )
shift.x = FT_MulDiv( shift.x, xstrength, d );
else
shift.x = FT_MulDiv( shift.x, l, q );
if ( FT_MulDiv( ystrength, q, l ) < d )
shift.y = FT_MulDiv( shift.y, ystrength, d );
else
shift.y = FT_MulDiv( shift.y, l, q );
}
else
shift.x = shift.y = 0;
outline->points[n].x = v_cur.x + xstrength + shift.x;
outline->points[n].y = v_cur.y + ystrength + shift.y;
in = out;
l_in = l_out;
v_cur = v_next;
}
first = last + 1;
}
return FT_Err_Ok;
}
static void GK_Outline_Embolden(FT_Outline* outline,FT_Pos strength,int* x_left,int* x_right,int* y_bottom,int* y_top)
{
FT_Vector* points;
FT_Vector v_prev, v_first, v_next, v_cur;
FT_Angle rotate, angle_in, angle_out;
FT_Int c, n, first = 0;
FT_Int orientation;
FT_Int min_x = 35565, max_x = -35565, min_y = 35565, max_y = -35565;
FT_Int new_min_x = 35565, new_max_x = -35565, new_min_y = 35565, new_max_y = -35565;
if (!outline) return;
strength /= 2;
if ( strength == 0 ) return;
orientation = FT_Outline_Get_Orientation(outline);
if (orientation == FT_ORIENTATION_NONE) return;
#ifdef GLYPH_LOG
if (glyph_log) { fprintf(glyph_log," Emboldening the outline by %ld:\n",strength); }
#endif
if (orientation == FT_ORIENTATION_TRUETYPE) rotate = -FT_ANGLE_PI2;
else rotate = FT_ANGLE_PI2;
points = outline->points;
for ( c = 0; c < outline->n_contours; c++ )
{
int last = outline->contours[c];
v_first = points[first];
v_prev = points[last];
v_cur = v_first;
for ( n = first; n <= last; n++ )
{
FT_Vector in, out;
FT_Angle angle_diff;
FT_Pos d;
FT_Fixed scale;
if ( n < last ) v_next = points[n + 1];
else v_next = v_first;
/* compute the in and out vectors */
in.x = v_cur.x - v_prev.x;
in.y = v_cur.y - v_prev.y;
out.x = v_next.x - v_cur.x;
out.y = v_next.y - v_cur.y;
angle_in = FT_Atan2( in.x, in.y );
angle_out = FT_Atan2( out.x, out.y );
angle_diff = FT_Angle_Diff( angle_in, angle_out );
scale = FT_Cos( angle_diff / 2 );
if ( scale < 0x4000L && scale > -0x4000L ) in.x = in.y = 0;
else
{
d = FT_DivFix( strength, scale );
FT_Vector_From_Polar( &in, d, angle_in + angle_diff / 2 - rotate );
}
outline->points[n].x = v_cur.x + strength + in.x;
outline->points[n].y = v_cur.y + strength + in.y;
if (v_cur.x < min_x) min_x = v_cur.x;
if (v_cur.x > max_x) max_x = v_cur.x;
if (v_cur.y < min_y) min_y = v_cur.y;
if (v_cur.y > max_y) max_y = v_cur.y;
if (outline->points[n].x < new_min_x) new_min_x = outline->points[n].x;
if (outline->points[n].x > new_max_x) new_max_x = outline->points[n].x;
if (outline->points[n].y < new_min_y) new_min_y = outline->points[n].y;
if (outline->points[n].y > new_max_y) new_max_y = outline->points[n].y;
v_prev = v_cur;
v_cur = v_next;
}
first = last + 1;
}
*x_left = min_x - new_min_x;
*x_right = new_max_x - max_x;
*y_top = new_max_y - max_y;
*y_bottom = min_y - new_min_y;
#ifdef GLYPH_LOG
if (glyph_log)
{
fprintf(glyph_log," (%d..%d x %d..%d) -> (%d..%d x %d..%d)\n",
min_x,max_x,min_y,max_y,new_min_x,new_max_x,new_min_y,new_max_y);
}
#endif
}
af_glyph_hints_reload( AF_GlyphHints hints,
FT_Outline* outline )
{
FT_Error error = FT_Err_Ok;
AF_Point points;
FT_UInt old_max, new_max;
AF_Scaler scaler = &hints->metrics->scaler;
FT_Fixed x_scale = hints->x_scale;
FT_Fixed y_scale = hints->y_scale;
FT_Pos x_delta = hints->x_delta;
FT_Pos y_delta = hints->y_delta;
FT_Memory memory = hints->memory;
hints->scaler_flags = scaler->flags;
hints->num_points = 0;
hints->num_contours = 0;
hints->axis[0].num_segments = 0;
hints->axis[0].num_edges = 0;
hints->axis[1].num_segments = 0;
hints->axis[1].num_edges = 0;
/* first of all, reallocate the contours array when necessary
*/
new_max = (FT_UInt) outline->n_contours;
old_max = hints->max_contours;
if ( new_max > old_max )
{
new_max = (new_max + 3) & ~3;
if ( FT_RENEW_ARRAY( hints->contours, old_max, new_max ) )
goto Exit;
hints->max_contours = new_max;
}
/* then, reallocate the points, segments & edges arrays if needed --
* note that we reserved two additional point positions, used to
* hint metrics appropriately
*/
new_max = (FT_UInt)( outline->n_points + 2 );
old_max = hints->max_points;
if ( new_max > old_max )
{
FT_Byte* items;
FT_ULong off1, off2, off3;
/* we store in a single buffer the following arrays:
*
* - an array of N AF_PointRec items
* - an array of 2*N AF_SegmentRec items
* - an array of 2*N AF_EdgeRec items
*
*/
new_max = ( new_max + 2 + 7 ) & ~7;
#define OFF_PAD2(x,y) (((x)+(y)-1) & ~((y)-1))
#define OFF_PADX(x,y) ((((x)+(y)-1)/(y))*(y))
#define OFF_PAD(x,y) ( ((y) & ((y)-1)) ? OFF_PADX(x,y) : OFF_PAD2(x,y) )
#undef OFF_INCREMENT
#define OFF_INCREMENT( _off, _type, _count ) \
( OFF_PAD( _off, sizeof(_type) ) + (_count)*sizeof(_type))
off1 = OFF_INCREMENT( 0, AF_PointRec, new_max );
off2 = OFF_INCREMENT( off1, AF_SegmentRec, new_max*2 );
off3 = OFF_INCREMENT( off2, AF_EdgeRec, new_max*2 );
FT_FREE( hints->points );
if ( FT_ALLOC( items, off3 ) )
{
hints->max_points = 0;
hints->axis[0].segments = NULL;
hints->axis[0].edges = NULL;
hints->axis[1].segments = NULL;
hints->axis[1].edges = NULL;
goto Exit;
}
/* readjust some pointers
*/
hints->max_points = new_max;
hints->points = (AF_Point) items;
hints->axis[0].segments = (AF_Segment)( items + off1 );
hints->axis[1].segments = hints->axis[0].segments + new_max;
hints->axis[0].edges = (AF_Edge) ( items + off2 );
hints->axis[1].edges = hints->axis[0].edges + new_max;
}
hints->num_points = outline->n_points;
hints->num_contours = outline->n_contours;
/* We can't rely on the value of `FT_Outline.flags' to know the fill */
/* direction used for a glyph, given that some fonts are broken (e.g. */
/* the Arphic ones). We thus recompute it each time we need to. */
/* */
hints->axis[ AF_DIMENSION_HORZ ].major_dir = AF_DIR_UP;
hints->axis[ AF_DIMENSION_VERT ].major_dir = AF_DIR_LEFT;
if ( FT_Outline_Get_Orientation( outline ) == FT_ORIENTATION_POSTSCRIPT )
{
hints->axis[ AF_DIMENSION_HORZ ].major_dir = AF_DIR_DOWN;
hints->axis[ AF_DIMENSION_VERT ].major_dir = AF_DIR_RIGHT;
}
hints->x_scale = x_scale;
hints->y_scale = y_scale;
hints->x_delta = x_delta;
hints->y_delta = y_delta;
points = hints->points;
if ( hints->num_points == 0 )
goto Exit;
{
AF_Point point;
AF_Point point_limit = points + hints->num_points;
/* compute coordinates & bezier flags */
{
FT_Vector* vec = outline->points;
char* tag = outline->tags;
for ( point = points; point < point_limit; point++, vec++, tag++ )
{
point->fx = vec->x;
point->fy = vec->y;
point->ox = point->x = FT_MulFix( vec->x, x_scale ) + x_delta;
point->oy = point->y = FT_MulFix( vec->y, y_scale ) + y_delta;
switch ( FT_CURVE_TAG( *tag ) )
{
case FT_CURVE_TAG_CONIC:
point->flags = AF_FLAG_CONIC;
break;
case FT_CURVE_TAG_CUBIC:
point->flags = AF_FLAG_CUBIC;
break;
default:
point->flags = 0;
;
}
}
}
/* compute `next' and `prev' */
{
FT_Int contour_index;
AF_Point prev;
AF_Point first;
AF_Point end;
contour_index = 0;
first = points;
end = points + outline->contours[0];
prev = end;
for ( point = points; point < point_limit; point++ )
{
point->prev = prev;
if ( point < end )
{
point->next = point + 1;
prev = point;
}
else
{
point->next = first;
contour_index++;
if ( point + 1 < point_limit )
{
end = points + outline->contours[contour_index];
first = point + 1;
prev = end;
}
}
}
}
/* set-up the contours array */
{
AF_Point* contour = hints->contours;
AF_Point* contour_limit = contour + hints->num_contours;
short* end = outline->contours;
short idx = 0;
for ( ; contour < contour_limit; contour++, end++ )
{
contour[0] = points + idx;
idx = (short)( end[0] + 1 );
}
}
/* compute directions of in & out vectors */
{
for ( point = points; point < point_limit; point++ )
{
AF_Point prev;
AF_Point next;
FT_Pos in_x, in_y, out_x, out_y;
prev = point->prev;
in_x = point->fx - prev->fx;
in_y = point->fy - prev->fy;
point->in_dir = af_direction_compute( in_x, in_y );
next = point->next;
out_x = next->fx - point->fx;
out_y = next->fy - point->fy;
point->out_dir = af_direction_compute( out_x, out_y );
if ( point->flags & ( AF_FLAG_CONIC | AF_FLAG_CUBIC ) )
{
Is_Weak_Point:
point->flags |= AF_FLAG_WEAK_INTERPOLATION;
}
else if ( point->out_dir == point->in_dir )
{
AF_Angle angle_in, angle_out, delta;
if ( point->out_dir != AF_DIR_NONE )
goto Is_Weak_Point;
angle_in = af_angle_atan( in_x, in_y );
angle_out = af_angle_atan( out_x, out_y );
delta = af_angle_diff( angle_in, angle_out );
if ( delta < 2 && delta > -2 )
goto Is_Weak_Point;
}
else if ( point->in_dir == -point->out_dir )
goto Is_Weak_Point;
}
}
}
/* compute inflection points
*/
af_glyph_hints_compute_inflections( hints );
Exit:
return error;
}
FT_Outline_EmboldenXY( FT_Outline* outline,
FT_Pos xstrength,
FT_Pos ystrength )
{
FT_Vector* points;
FT_Int c, first, last;
FT_Int orientation;
if ( !outline )
return FT_THROW( Invalid_Outline );
xstrength /= 2;
ystrength /= 2;
if ( xstrength == 0 && ystrength == 0 )
return FT_Err_Ok;
orientation = FT_Outline_Get_Orientation( outline );
if ( orientation == FT_ORIENTATION_NONE )
{
if ( outline->n_contours )
return FT_THROW( Invalid_Argument );
else
return FT_Err_Ok;
}
points = outline->points;
first = 0;
for ( c = 0; c < outline->n_contours; c++ )
{
FT_Vector in, out, anchor, shift;
FT_Fixed l_in, l_out, l_anchor = 0, l, q, d;
FT_Int i, j, k;
l_in = 0;
last = outline->contours[c];
/* pacify compiler */
in.x = in.y = anchor.x = anchor.y = 0;
/* Counter j cycles though the points; counter i advances only */
/* when points are moved; anchor k marks the first moved point. */
for ( i = last, j = first, k = -1;
j != i && i != k;
j = j < last ? j + 1 : first )
{
if ( j != k )
{
out.x = points[j].x - points[i].x;
out.y = points[j].y - points[i].y;
l_out = (FT_Fixed)FT_Vector_NormLen( &out );
if ( l_out == 0 )
continue;
}
else
{
out = anchor;
l_out = l_anchor;
}
if ( l_in != 0 )
{
if ( k < 0 )
{
k = i;
anchor = in;
l_anchor = l_in;
}
d = FT_MulFix( in.x, out.x ) + FT_MulFix( in.y, out.y );
/* shift only if turn is less than ~160 degrees */
if ( d > -0xF000L )
{
d = d + 0x10000L;
/* shift components along lateral bisector in proper orientation */
shift.x = in.y + out.y;
shift.y = in.x + out.x;
if ( orientation == FT_ORIENTATION_TRUETYPE )
shift.x = -shift.x;
else
shift.y = -shift.y;
/* restrict shift magnitude to better handle collapsing segments */
q = FT_MulFix( out.x, in.y ) - FT_MulFix( out.y, in.x );
if ( orientation == FT_ORIENTATION_TRUETYPE )
q = -q;
l = FT_MIN( l_in, l_out );
/* non-strict inequalities avoid divide-by-zero when q == l == 0 */
if ( FT_MulFix( xstrength, q ) <= FT_MulFix( l, d ) )
shift.x = FT_MulDiv( shift.x, xstrength, d );
else
shift.x = FT_MulDiv( shift.x, l, q );
if ( FT_MulFix( ystrength, q ) <= FT_MulFix( l, d ) )
shift.y = FT_MulDiv( shift.y, ystrength, d );
else
shift.y = FT_MulDiv( shift.y, l, q );
}
else
shift.x = shift.y = 0;
for ( ;
i != j;
i = i < last ? i + 1 : first )
{
points[i].x += xstrength + shift.x;
points[i].y += ystrength + shift.y;
}
}
else
i = j;
in = out;
l_in = l_out;
}
first = last + 1;
}
return FT_Err_Ok;
}
osgText::Glyph3D * FreeTypeFont::getGlyph3D(const osgText::FontResolution& fontRes, unsigned int charcode)
{
OpenThreads::ScopedLock<OpenThreads::Mutex> lock(FreeTypeLibrary::instance()->getMutex());
setFontResolution(fontRes);
//
// GT: fix for symbol fonts (i.e. the Webdings font) as the wrong character are being
// returned, for symbol fonts in windows (FT_ENCONDING_MS_SYMBOL in freetype) the correct
// values are from 0xF000 to 0xF0FF not from 0x000 to 0x00FF (0 to 255) as you would expect.
// Microsoft uses a private field for its symbol fonts
//
unsigned int charindex = charcode;
if (_face->charmap != NULL)
{
if (_face->charmap->encoding == FT_ENCODING_MS_SYMBOL)
{
charindex |= 0xF000;
}
}
FT_Error error = FT_Load_Char( _face, charindex, FT_LOAD_DEFAULT|_flags );
if (error)
{
OSG_WARN << "FT_Load_Char(...) error 0x"<<std::hex<<error<<std::dec<<std::endl;
return 0;
}
if (_face->glyph->format != FT_GLYPH_FORMAT_OUTLINE)
{
OSG_WARN << "FreeTypeFont3D::getGlyph : not a vector font" << std::endl;
return 0;
}
float coord_scale = getCoordScale();
// ** init FreeType to describe the glyph
FreeType::Char3DInfo char3d(_facade->getNumberCurveSamples());
char3d._coord_scale = coord_scale;
FT_Outline outline = _face->glyph->outline;
FT_Outline_Funcs funcs;
funcs.conic_to = (FT_Outline_ConicToFunc)&FreeType::conicTo;
funcs.line_to = (FT_Outline_LineToFunc)&FreeType::lineTo;
funcs.cubic_to = (FT_Outline_CubicToFunc)&FreeType::cubicTo;
funcs.move_to = (FT_Outline_MoveToFunc)&FreeType::moveTo;
funcs.shift = 0;
funcs.delta = 0;
FT_Orientation orientation = FT_Outline_Get_Orientation(&outline);
char3d._reverseFill = (orientation == FT_ORIENTATION_POSTSCRIPT);
// ** record description
FT_Error _error = FT_Outline_Decompose(&outline, &funcs, &char3d);
if (_error)
{
OSG_WARN << "FreeTypeFont3D::getGlyph : - outline decompose failed ..." << std::endl;
return 0;
}
// ** create geometry for each part of the glyph
osg::ref_ptr<osg::Geometry> frontGeo(new osg::Geometry);
osg::ref_ptr<osg::Vec3Array> rawVertices = new osg::Vec3Array(*(char3d._verts));
osg::Geometry::PrimitiveSetList rawPrimitives;
for(osg::Geometry::PrimitiveSetList::iterator itr = char3d.get()->getPrimitiveSetList().begin();
itr != char3d.get()->getPrimitiveSetList().end();
++itr)
{
rawPrimitives.push_back(dynamic_cast<osg::PrimitiveSet*>((*itr)->clone(osg::CopyOp::DEEP_COPY_ALL)));
}
// ** save vertices and PrimitiveSetList of each face in the Glyph3D PrimitiveSet face list
osg::ref_ptr<osgText::Glyph3D> glyph = new osgText::Glyph3D(_facade, charcode);
// copy the raw primitive set list before we tessellate it.
glyph->getRawFacePrimitiveSetList() = rawPrimitives;
glyph->setRawVertexArray(rawVertices.get());
FT_Glyph_Metrics* metrics = &(_face->glyph->metrics);
glyph->setWidth((float)metrics->width * coord_scale);
glyph->setHeight((float)metrics->height * coord_scale);
glyph->setHorizontalBearing(osg::Vec2((float)metrics->horiBearingX * coord_scale,(float)(metrics->horiBearingY-metrics->height) * coord_scale)); // bottom left.
glyph->setHorizontalAdvance((float)metrics->horiAdvance * coord_scale);
glyph->setVerticalBearing(osg::Vec2((float)metrics->vertBearingX * coord_scale,(float)(metrics->vertBearingY-metrics->height) * coord_scale)); // top middle.
glyph->setVerticalAdvance((float)metrics->vertAdvance * coord_scale);
#if 0
OSG_NOTICE<<"getGlyph3D("<<charcode<<", "<<char(charcode)<<")"<<std::endl;
OSG_NOTICE<<" height="<<glyph->getHeight()<<std::endl;
OSG_NOTICE<<" width="<<glyph->getWidth()<<std::endl;
OSG_NOTICE<<" horizontalBearing="<<glyph->getHorizontalBearing()<<std::endl;
OSG_NOTICE<<" horizontalAdvance="<<glyph->getHorizontalAdvance()<<std::endl;
OSG_NOTICE<<" verticalBearing="<<glyph->getHorizontalBearing()<<std::endl;
OSG_NOTICE<<" verticalAdvance="<<glyph->getVerticalAdvance()<<std::endl;
#endif
FT_BBox ftbb;
FT_Outline_Get_BBox(&outline, &ftbb);
osg::BoundingBox bb(float(ftbb.xMin) * coord_scale, float(ftbb.yMin) * coord_scale, 0.0f, float(ftbb.xMax) * coord_scale, float(ftbb.yMax) * coord_scale, 0.0f);
glyph->setBoundingBox(bb);
return glyph.release();
}
FT_Outline_EmboldenXY( FT_Outline* outline,
FT_Pos xstrength,
FT_Pos ystrength )
{
FT_Vector* points;
FT_Vector v_prev, v_first, v_next, v_cur;
FT_Int c, n, first;
FT_Int orientation;
if ( !outline )
return FT_Err_Invalid_Argument;
xstrength /= 2;
ystrength /= 2;
if ( xstrength == 0 && ystrength == 0 )
return FT_Err_Ok;
orientation = FT_Outline_Get_Orientation( outline );
if ( orientation == FT_ORIENTATION_NONE )
{
if ( outline->n_contours )
return FT_Err_Invalid_Argument;
else
return FT_Err_Ok;
}
points = outline->points;
first = 0;
for ( c = 0; c < outline->n_contours; c++ )
{
FT_Vector in, out, shift;
FT_Fixed l_in, l_out, d;
int last = outline->contours[c];
v_first = points[first];
v_prev = points[last];
v_cur = v_first;
/* compute the incoming vector and its length */
in.x = v_cur.x - v_prev.x;
in.y = v_cur.y - v_prev.y;
l_in = FT_Vector_Length( &in );
for ( n = first; n <= last; n++ )
{
if ( n < last )
v_next = points[n + 1];
else
v_next = v_first;
/* compute the outgoing vector and its length */
out.x = v_next.x - v_cur.x;
out.y = v_next.y - v_cur.y;
l_out = FT_Vector_Length( &out );
d = l_in * l_out + in.x * out.x + in.y * out.y;
/* shift only if turn is less then ~160 degrees */
if ( 16 * d > l_in * l_out )
{
/* shift components are rotated */
shift.x = FT_DivFix( l_out * in.y + l_in * out.y, d );
shift.y = FT_DivFix( l_out * in.x + l_in * out.x, d );
if ( orientation == FT_ORIENTATION_TRUETYPE )
shift.x = -shift.x;
else
shift.y = -shift.y;
shift.x = FT_MulFix( xstrength, shift.x );
shift.y = FT_MulFix( ystrength, shift.y );
}
else
shift.x = shift.y = 0;
outline->points[n].x = v_cur.x + xstrength + shift.x;
outline->points[n].y = v_cur.y + ystrength + shift.y;
in = out;
l_in = l_out;
v_cur = v_next;
}
first = last + 1;
}
return FT_Err_Ok;
}