public static void GetFreePathWriter(out PixelFarm.Agg.VertexSource.PathWriter p)
{
if (s_pathWriters.Count > 0)
{
p = s_pathWriters.Pop();
}
else
{
p = new Agg.VertexSource.PathWriter();
}
}
unsafe internal static void BuildGlyphOutline(NativeFontGlyph fontGlyph)
{
FT_Outline outline = (*(FT_Outline *)fontGlyph.nativeOutlinePtr);
//outline version
//------------------------------
int npoints = outline.n_points;
int startContour = 0;
int cpoint_index = 0;
int todoContourCount = outline.n_contours;
PixelFarm.Agg.VertexSource.PathWriter ps = new Agg.VertexSource.PathWriter();
fontGlyph.originalVxs = ps.Vxs;
int controlPointCount = 0;
while (todoContourCount > 0)
{
int nextContour = outline.contours[startContour] + 1;
bool isFirstPoint = true;
FtVec2 secondControlPoint = new FtVec2();
FtVec2 thirdControlPoint = new FtVec2();
bool justFromCurveMode = false;
//FT_Vector vpoint = new FT_Vector();
for (; cpoint_index < nextContour; ++cpoint_index)
{
FT_Vector vpoint = outline.points[cpoint_index];
byte vtag = outline.tags[cpoint_index];
bool has_dropout = (((vtag >> 2) & 0x1) != 0);
int dropoutMode = vtag >> 3;
// Console.WriteLine(vpoint.ToString() + " " + vtag);
if ((vtag & 0x1) != 0)
{
//on curve
if (justFromCurveMode)
{
switch (controlPointCount)
{
case 1:
{
ps.Curve3(secondControlPoint.x / FT_RESIZE, secondControlPoint.y / FT_RESIZE,
vpoint.x / FT_RESIZE, vpoint.y / FT_RESIZE);
}
break;
case 2:
{
ps.Curve4(secondControlPoint.x / FT_RESIZE, secondControlPoint.y / FT_RESIZE,
thirdControlPoint.x / FT_RESIZE, thirdControlPoint.y / FT_RESIZE,
vpoint.x / FT_RESIZE, vpoint.y / FT_RESIZE);
}
break;
default:
{
throw new NotSupportedException();
}
}
controlPointCount = 0;
justFromCurveMode = false;
}
else
{
if (isFirstPoint)
{
isFirstPoint = false;
ps.MoveTo(vpoint.x / FT_RESIZE, vpoint.y / FT_RESIZE);
}
else
{
ps.LineTo(vpoint.x / FT_RESIZE, vpoint.y / FT_RESIZE);
}
if (has_dropout)
{
//printf("[%d] on,dropoutMode=%d: %d,y:%d \n", mm, dropoutMode, vpoint.x, vpoint.y);
}
else
{
//printf("[%d] on,x: %d,y:%d \n", mm, vpoint.x, vpoint.y);
}
}
}
else
{
switch (controlPointCount)
{
case 0:
{ //bit 1 set=> off curve, this is a control point
//if this is a 2nd order or 3rd order control point
if (((vtag >> 1) & 0x1) != 0)
{
//printf("[%d] bzc3rd, x: %d,y:%d \n", mm, vpoint.x, vpoint.y);
thirdControlPoint = new FtVec2(vpoint);
}
else
{
//printf("[%d] bzc2nd, x: %d,y:%d \n", mm, vpoint.x, vpoint.y);
secondControlPoint = new FtVec2(vpoint);
}
}
break;
case 1:
{
if (((vtag >> 1) & 0x1) != 0)
{
//printf("[%d] bzc3rd, x: %d,y:%d \n", mm, vpoint.x, vpoint.y);
thirdControlPoint = new FtVec2(vpoint);
}
else
{
//we already have prev second control point
//so auto calculate line to
//between 2 point
FtVec2 mid = GetMidPoint(secondControlPoint, vpoint);
//----------
//generate curve3
ps.Curve3(secondControlPoint.x / FT_RESIZE, secondControlPoint.y / FT_RESIZE,
mid.x / FT_RESIZE, mid.y / FT_RESIZE);
//------------------------
controlPointCount--;
//------------------------
//printf("[%d] bzc2nd, x: %d,y:%d \n", mm, vpoint.x, vpoint.y);
secondControlPoint = new FtVec2(vpoint);
}
}
break;
default:
{
throw new NotSupportedException();
}
break;
}
controlPointCount++;
justFromCurveMode = true;
}
}
//--------
//close figure
//if in curve mode
if (justFromCurveMode)
{
switch (controlPointCount)
{
case 0: break;
case 1:
{
ps.Curve3(secondControlPoint.x / FT_RESIZE, secondControlPoint.y / FT_RESIZE,
ps.LastMoveX, ps.LastMoveY);
}
break;
case 2:
{
ps.Curve4(secondControlPoint.x / FT_RESIZE, secondControlPoint.y / FT_RESIZE,
thirdControlPoint.x / FT_RESIZE, thirdControlPoint.y / FT_RESIZE,
ps.LastMoveX, ps.LastMoveY);
}
break;
default:
{ throw new NotSupportedException(); }
}
justFromCurveMode = false;
controlPointCount = 0;
}
ps.CloseFigure();
//--------
startContour++;
todoContourCount--;
}
}
unsafe internal static void BuildGlyphOutline(FontGlyph fontGlyph)
{
FT_Outline outline = (*(FT_Outline*)fontGlyph.glyphMatrix.outline);
//outline version
//------------------------------
int npoints = outline.n_points;
int startContour = 0;
int cpoint_index = 0;
int todoContourCount = outline.n_contours;
PixelFarm.Agg.VertexSource.PathWriter ps = new Agg.VertexSource.PathWriter();
fontGlyph.originalVxs = ps.Vxs;
int controlPointCount = 0;
while (todoContourCount > 0)
{
int nextContour = outline.contours[startContour] + 1;
bool isFirstPoint = true;
FtVec2 secondControlPoint = new FtVec2();
FtVec2 thirdControlPoint = new FtVec2();
bool justFromCurveMode = false;
//FT_Vector vpoint = new FT_Vector();
for (; cpoint_index < nextContour; ++cpoint_index)
{
FT_Vector vpoint = outline.points[cpoint_index];
byte vtag = outline.tags[cpoint_index];
bool has_dropout = (((vtag >> 2) & 0x1) != 0);
int dropoutMode = vtag >> 3;
Console.WriteLine(vpoint.ToString() + " " + vtag);
if ((vtag & 0x1) != 0)
{
//on curve
if (justFromCurveMode)
{
switch (controlPointCount)
{
case 1:
{
ps.Curve3(secondControlPoint.x / FT_RESIZE, secondControlPoint.y / FT_RESIZE,
vpoint.x / FT_RESIZE, vpoint.y / FT_RESIZE);
}
break;
case 2:
{
ps.Curve4(secondControlPoint.x / FT_RESIZE, secondControlPoint.y / FT_RESIZE,
thirdControlPoint.x / FT_RESIZE, thirdControlPoint.y / FT_RESIZE,
vpoint.x / FT_RESIZE, vpoint.y / FT_RESIZE);
}
break;
default:
{
throw new NotSupportedException();
}
}
controlPointCount = 0;
justFromCurveMode = false;
}
else
{
if (isFirstPoint)
{
isFirstPoint = false;
ps.MoveTo(vpoint.x / FT_RESIZE, vpoint.y / FT_RESIZE);
}
else
{
ps.LineTo(vpoint.x / FT_RESIZE, vpoint.y / FT_RESIZE);
}
if (has_dropout)
{
//printf("[%d] on,dropoutMode=%d: %d,y:%d \n", mm, dropoutMode, vpoint.x, vpoint.y);
}
else
{
//printf("[%d] on,x: %d,y:%d \n", mm, vpoint.x, vpoint.y);
}
}
}
else
{
switch (controlPointCount)
{
case 0:
{ //bit 1 set=> off curve, this is a control point
//if this is a 2nd order or 3rd order control point
if (((vtag >> 1) & 0x1) != 0)
{
//printf("[%d] bzc3rd, x: %d,y:%d \n", mm, vpoint.x, vpoint.y);
thirdControlPoint = new FtVec2(vpoint);
}
else
{
//printf("[%d] bzc2nd, x: %d,y:%d \n", mm, vpoint.x, vpoint.y);
secondControlPoint = new FtVec2(vpoint);
}
}
break;
case 1:
{
if (((vtag >> 1) & 0x1) != 0)
{
//printf("[%d] bzc3rd, x: %d,y:%d \n", mm, vpoint.x, vpoint.y);
thirdControlPoint = new FtVec2(vpoint);
}
else
{
//we already have prev second control point
//so auto calculate line to
//between 2 point
FtVec2 mid = GetMidPoint(secondControlPoint, vpoint);
//----------
//generate curve3
ps.Curve3(secondControlPoint.x / FT_RESIZE, secondControlPoint.y / FT_RESIZE,
mid.x / FT_RESIZE, mid.y / FT_RESIZE);
//------------------------
controlPointCount--;
//------------------------
//printf("[%d] bzc2nd, x: %d,y:%d \n", mm, vpoint.x, vpoint.y);
secondControlPoint = new FtVec2(vpoint);
}
}
break;
default:
{
throw new NotSupportedException();
}
break;
}
controlPointCount++;
justFromCurveMode = true;
}
}
//--------
//close figure
//if in curve mode
if (justFromCurveMode)
{
switch (controlPointCount)
{
case 0: break;
case 1:
{
ps.Curve3(secondControlPoint.x / FT_RESIZE, secondControlPoint.y / FT_RESIZE,
ps.LastMoveX, ps.LastMoveY);
}
break;
case 2:
{
ps.Curve4(secondControlPoint.x / FT_RESIZE, secondControlPoint.y / FT_RESIZE,
thirdControlPoint.x / FT_RESIZE, thirdControlPoint.y / FT_RESIZE,
ps.LastMoveX, ps.LastMoveY);
}
break;
default:
{ throw new NotSupportedException(); }
}
justFromCurveMode = false;
controlPointCount = 0;
}
ps.CloseFigure();
//--------
startContour++;
todoContourCount--;
}
}
