protected internal virtual void ExtendIfNeeded(int cmdsAddNum, int pntsAddNum)
{
if (cmds == null)
{
cmds = new sbyte[BLOCKSIZE];
}
if (pnts == null)
{
pnts = new PointFP[BLOCKSIZE];
}
if (cmdsSize + cmdsAddNum > cmds.Length)
{
sbyte[] newdata = new sbyte[cmds.Length + (cmdsAddNum > BLOCKSIZE?cmdsAddNum:BLOCKSIZE)];
if (cmdsSize > 0)
{
Array.Copy(cmds, 0, newdata, 0, cmdsSize);
}
cmds = newdata;
}
if (pntsSize + pntsAddNum > pnts.Length)
{
PointFP[] newdata = new PointFP[pnts.Length + (pntsAddNum > BLOCKSIZE?pntsAddNum:BLOCKSIZE)];
if (pntsSize > 0)
{
Array.Copy(pnts, 0, newdata, 0, pntsSize);
}
pnts = newdata;
}
}
private void CurveEnd(PointFP control1, PointFP control2, PointFP curveEnd)
{
drawingCurve = false;
if (needDrawStartCap)
{
startCapP1 = new PointFP(curveBegin);
startCapP2 = new PointFP(control1);
//AddLineCap(control1, curveBegin, startLineCap);
needDrawStartCap = false;
}
LineFP head = new LineFP();
LineFP tail = new LineFP();
CalcHeadTail(curveBegin, control1, head, new LineFP());
outline.AddMoveTo(head.P1);
outline.AddPath(curvePath1);
CalcHeadTail(control2, curveEnd, new LineFP(), tail);
outline.AddLineTo(tail.P1);
outline.AddLineTo(tail.P2);
outline.ExtendIfNeeded(curvePath1.cmdsSize, curvePath1.pntsSize);
int j = curvePath2.pntsSize - 1;
for (int i = curvePath2.cmdsSize - 1; i >= 0; i--)
{
outline.AddLineTo(curvePath2.pnts[j--]);
}
outline.AddLineTo(head.P2);
outline.AddClose();
curvePath1 = null;
curvePath2 = null;
lastCurveTail = null;
lastPoint = new PointFP(control2);
drawingCurve = false;
}
private void AddLineCap(PointFP p1, PointFP p2, int lineCap)
{
if (lineCap == PenFP.LINECAP_BUTT || p1.Equals(p2))
{
return;
}
int dx = p2.X - p1.X;
int dy = p2.Y - p1.Y;
int len = PointFP.Distance(dx, dy);
PointFP[] cap = lineCap == PenFP.LINECAP_ROUND?GraphicsPathFP.roundCap:GraphicsPathFP.squareCap;
dx = MathFP.Mul(ff_rad, MathFP.Div(dx, len));
dy = MathFP.Mul(ff_rad, MathFP.Div(dy, len));
MatrixFP m = new MatrixFP(dx, dx, dy, -dy, p2.X, p2.Y);
outline.AddMoveTo(new PointFP(0, GraphicsPathFP.One).Transform(m));
for (int i = 0; i < cap.Length; i++)
{
outline.AddLineTo(new PointFP(cap[i]).Transform(m));
}
outline.AddLineTo(new PointFP(0, -GraphicsPathFP.One).Transform(m));
outline.AddClose();
}
public virtual RectangleFP Union(PointFP p)
{
if (!IsEmpty())
{
Reset(MathFP.Min(ff_xmin, p.X), MathFP.Max(ff_xmax, p.X), MathFP.Min(ff_ymin, p.Y), MathFP.Max(ff_ymax, p.Y));
}
return(this);
}
public override void MoveTo(PointFP point)
{
FinishCurrentSegment();
needDrawStartCap = true;
closed = false;
startCapP1 = startCapP2 = null;
base.MoveTo(point);
}
private void CurveBegin(PointFP control)
{
AddLineJoin(lastPoint, currPoint, control);
drawingCurve = true;
curvePath1 = new GraphicsPathFP();
curvePath2 = new GraphicsPathFP();
curveBegin = new PointFP(currPoint);
}
public virtual void MoveTo(PointFP point)
{
if (!started)
{
startPoint.Reset(point);
started = true;
}
currPoint.Reset(point);
}
public override void MoveTo(PointFP point)
{
transformedPoint = new PointFP(point);
if (transformMatrix != null)
{
transformedPoint.Transform(transformMatrix);
}
base.MoveTo(point);
}
public LineFP GetHeadOutline(int ff_rad)
{
PointFP p = new PointFP(P1.X - P2.X, P1.Y - P2.Y);
int len = Length;
p.Reset(MathFP.Div(-p.Y, len), MathFP.Div(p.X, len));
p.Reset(MathFP.Mul(p.X, ff_rad), MathFP.Mul(p.Y, ff_rad));
return(new LineFP(P1.X - p.X, P1.Y - p.Y, P1.X + p.X, P1.Y + p.Y));
}
private void CalcHeadTail(PointFP p1, PointFP p2, LineFP head, LineFP tail)
{
LineFP curr = new LineFP(p1, p2);
head.Reset(curr.GetHeadOutline(ff_rad));
int dx = p2.X - p1.X;
int dy = p2.Y - p1.Y;
tail.Reset(head.P1.X + dx, head.P1.Y + dy, head.P2.X + dx, head.P2.Y + dy);
}
public override int GetColorAt(int x, int y, bool singlePoint)
{
int pos;
PointFP p = new PointFP(x << SingleFP.DecimalBits, y << SingleFP.DecimalBits);
PointFP p1 = null;
if (!singlePoint)
{
p1 = new PointFP(p.X + SingleFP.One, p.Y);
}
if (finalMatrix != null)
{
p.Transform(finalMatrix);
if (!singlePoint)
{
p1.Transform(finalMatrix);
}
}
int width = bounds.Width;
int height = bounds.Height;
if (type == LINEAR_GRADIENT)
{
int v = p.X + ff_length / 2;
if (v < 0)
{
v = 0;
}
else if (v > ff_length - 1)
{
v = ff_length - 1;
}
ff_currpos = (int)(((long)v << RATIO_BITS + SingleFP.DecimalBits) / ff_length);
if (!singlePoint)
{
ff_deltapos = (int)(((long)(p1.X - p.X) << RATIO_BITS + SingleFP.DecimalBits) / ff_length);
}
pos = ff_currpos >> SingleFP.DecimalBits;
}
else
{
ff_currpos = PointFP.Distance(p.X, p.Y);
if (!singlePoint)
{
ff_deltapos = PointFP.Distance(p1.X, p1.Y) - ff_currpos;
}
//if (ff_currpos > SingleFP.One - 1) pos = SingleFP.One - 1;
pos = ff_currpos >> SingleFP.DecimalBits - RATIO_BITS;
}
//pos >>= BrushFP.XY_MAX_BITS - RATIO_BITS;
pos = pos < 0?0:(pos > RATIO_MAX?RATIO_MAX:pos);
return(gradientColors[pos]);
}
public void AddCurveTo(PointFP control, PointFP point)
{
if (control.Equals(point))
{
AddLineTo(point);
return;
}
ExtendIfNeeded(1, 2);
cmds[cmdsSize++] = CMD_QCURVETO;
pnts[pntsSize++] = new PointFP(control);
pnts[pntsSize++] = new PointFP(point);
}
public override bool Equals(System.Object obj)
{
PointFP p = (PointFP)obj;
if (p != null)
{
return(X == p.X && Y == p.Y);
}
else
{
return(false);
}
}
static GraphicsPathFP()
{
One = SingleFP.One;
roundCap[0] = new PointFP(25080, 60547);
roundCap[1] = new PointFP(46341, 46341);
roundCap[2] = new PointFP(60547, 25080);
roundCap[3] = new PointFP(One, 0);
roundCap[4] = new PointFP(60547, -25080);
roundCap[5] = new PointFP(46341, -46341);
roundCap[6] = new PointFP(25080, -60547);
squareCap[0] = new PointFP(One, One);
squareCap[1] = new PointFP(One, -One);
}
public void AddPath(GraphicsPathFP path)
{
if (path.cmdsSize > 0)
{
ExtendIfNeeded(path.cmdsSize, path.pntsSize);
Array.Copy(path.cmds, 0, cmds, cmdsSize, path.cmdsSize);
for (int i = 0; i < path.pntsSize; i++)
{
pnts[i + pntsSize] = new PointFP(path.pnts[i]);
}
cmdsSize += path.cmdsSize;
pntsSize += path.pntsSize;
}
}
public LineFP GetTailOutline(int ff_rad)
{
PointFP c = Center;
PointFP p = new PointFP(P2.X - c.X, P2.Y - c.Y);
p.Reset(p.Y, -p.X);
int dis = PointFP.Distance(PointFP.Origin, p);
if (dis == 0)
{
dis = 1;
}
p.Reset(MathFP.Div(MathFP.Mul(p.X, ff_rad), dis), MathFP.Div(MathFP.Mul(p.Y, ff_rad), dis));
return(new LineFP(P2.X - p.X, P2.Y - p.Y, P2.X + p.X, P2.Y + p.Y));
}
public GraphicsPathFP(GraphicsPathFP from)
{
cmdsSize = from.cmdsSize;
pntsSize = from.pntsSize;
if (cmdsSize > 0)
{
cmds = new sbyte[cmdsSize];
pnts = new PointFP[pntsSize];
Array.Copy(from.cmds, 0, cmds, 0, cmdsSize);
for (int i = 0; i < pntsSize; i++)
{
pnts[i] = new PointFP(from.pnts[i]);
}
}
}
private void AddLineJoin(PointFP lastPoint, PointFP currPoint, PointFP nextPoint)
{
if (lastPoint == null || currPoint == null || nextPoint == null || nextPoint.Equals(currPoint) || lastPoint.Equals(currPoint))
{
return;
}
PointFP p1 = null, p2 = null;
LineFP head, tail, lastHead, lastTail;
CalcHeadTail(currPoint, nextPoint, head = new LineFP(), tail = new LineFP());
CalcHeadTail(lastPoint, currPoint, lastHead = new LineFP(), lastTail = new LineFP());
bool cross1, cross2, needLineJoin = false;
PointFP pi1 = new PointFP();
PointFP pi2 = new PointFP();
cross1 = LineFP.Intersects(new LineFP(head.P1, tail.P1), new LineFP(lastHead.P1, lastTail.P1), pi1);
cross2 = LineFP.Intersects(new LineFP(head.P2, tail.P2), new LineFP(lastHead.P2, lastTail.P2), pi2);
if (cross1 && !cross2 && pi1.X != SingleFP.NaN)
{
p1 = lastTail.P2;
p2 = head.P2;
needLineJoin = true;
}
else if (!cross1 && cross2 && pi2.X != SingleFP.NaN)
{
p1 = lastTail.P1;
p2 = head.P1;
needLineJoin = true;
}
if (needLineJoin)
{
outline.AddMoveTo(cross1 ? pi1 : pi2);
outline.AddLineTo(cross1 ? p2 : p1);
if (lineJoin == PenFP.LINEJOIN_MITER)
{
outline.AddLineTo(cross1 ? pi2 : pi1);
}
outline.AddLineTo(cross1 ? p1 : p2);
outline.AddClose();
if (lineJoin == PenFP.LINEJOIN_ROUND)
{
AddLineCap(cross2 ? pi2 : pi1, currPoint, PenFP.LINECAP_ROUND);
}
}
}
public virtual void CurveTo(PointFP control1, PointFP control2, PointFP point)
{
PointFP tmp1 = new PointFP(currPoint.X - control1.X * 2 + control2.X, currPoint.Y - control1.Y * 2 + control2.Y);
PointFP tmp2 = new PointFP((control1.X - control2.X) * 3 - currPoint.X + point.X, (control1.Y - control2.Y) * 3 - currPoint.Y + point.Y);
PointFP f = new PointFP(currPoint);
PointFP df = new PointFP((control1.X - currPoint.X) * 3 / SUBDIVIDE + tmp1.X * 3 / SUBDIVIDE2 + tmp2.X / SUBDIVIDE3, (control1.Y - currPoint.Y) * 3 / SUBDIVIDE + tmp1.Y * 3 / SUBDIVIDE2 + tmp2.Y / SUBDIVIDE3);
PointFP ddf = new PointFP(tmp1.X * 6 / SUBDIVIDE2 + tmp2.X * 6 / SUBDIVIDE3, tmp1.Y * 6 / SUBDIVIDE2 + tmp2.Y * 6 / SUBDIVIDE3);
PointFP dddf = new PointFP(tmp2.X * 6 / SUBDIVIDE3, tmp2.Y * 6 / SUBDIVIDE3);
for (int c = 0; c < SUBDIVIDE - 1; c++)
{
f.Add(df); df.Add(ddf); ddf.Add(dddf); LineTo(f);
}
LineTo(point);
}
public static GraphicsPathFP CreateSmoothCurves(PointFP[] points, int offset, int numberOfSegments, int ff_factor, bool closed)
{
int len = points.Length;
GraphicsPathFP path = new GraphicsPathFP();
if (numberOfSegments < 1 ||
numberOfSegments > points.Length - 1 ||
offset < 0 ||
offset + numberOfSegments > len - 1)
{
return(path);
}
PointFP[] PC1s = new PointFP[points.Length];
PointFP[] PC2s = new PointFP[points.Length];
if (!closed)
{
PC1s[0] = points[0];
PC2s[len - 1] = points[len - 1];
}
else
{
PC1s[0] = CalcControlPoint(points[len - 1], points[0], points[1], ff_factor);
PC2s[0] = CalcControlPoint(points[1], points[0], points[len - 1], ff_factor);
PC1s[len - 1] = CalcControlPoint(points[len - 2], points[len - 1], points[0], ff_factor);
PC2s[len - 1] = CalcControlPoint(points[0], points[len - 1], points[len - 2], ff_factor);
}
for (int i = 1; i < len - 1; i++)
{
PC1s[i] = CalcControlPoint(points[i - 1], points[i], points[i + 1], ff_factor);
PC2s[i] = CalcControlPoint(points[i + 1], points[i], points[i - 1], ff_factor);
}
path.AddMoveTo(points[offset]);
for (int i = 0; i < numberOfSegments; i++)
{
path.AddCurveTo(PC1s[offset + i], PC2s[offset + i + 1], points[offset + i + 1]);
}
if (closed)
{
path.AddCurveTo(PC1s[len - 1], PC2s[0], points[0]);
path.AddClose();
}
return(path);
}
public void AddCurveTo(PointFP control1, PointFP control2, PointFP point)
{
if (pnts[pntsSize - 1].Equals(control1))
{
AddCurveTo(control2, point);
return;
}
if (point.Equals(control2))
{
AddCurveTo(control1, point);
return;
}
ExtendIfNeeded(1, 3);
cmds[cmdsSize++] = CMD_CCURVETO;
pnts[pntsSize++] = new PointFP(control1);
pnts[pntsSize++] = new PointFP(control2);
pnts[pntsSize++] = new PointFP(point);
}
public virtual void Visit(GraphicsPathIterator iterator)
{
if (iterator != null)
{
PointFP p0 = new PointFP();
PointFP p1 = new PointFP();
PointFP p2 = new PointFP();
iterator.Begin();
int j = 0;
for (int i = 0; i < cmdsSize; i++)
{
switch (cmds[i])
{
case CMD_NOP:
break;
case CMD_MOVETO:
iterator.MoveTo(pnts[j++]);
break;
case CMD_LINETO:
iterator.LineTo(pnts[j++]);
break;
case CMD_QCURVETO:
iterator.CurveTo(pnts[j++], pnts[j++]);
break;
case CMD_CCURVETO:
iterator.CurveTo(pnts[j++], pnts[j++], pnts[j++]);
break;
case CMD_CLOSE:
iterator.Close();
break;
default:
return;
}
}
iterator.End();
}
}
public override void LineTo(PointFP point)
{
//PointFP a = new PointFP(CurrentPoint);
PointFP pntTemp = new PointFP(point);
ff_xmin = MathFP.Min(ff_xmin, CurrentPoint.X);
ff_xmax = MathFP.Max(ff_xmax, point.X);
ff_ymin = MathFP.Min(ff_ymin, CurrentPoint.Y);
ff_ymax = MathFP.Max(ff_ymax, point.Y);
if (transformMatrix != null)
{
pntTemp.Transform(transformMatrix);
//b.Transform(transformMatrix);
}
Scanline(transformedPoint.X, transformedPoint.Y, pntTemp.X, pntTemp.Y);
transformedPoint = pntTemp;
base.LineTo(point);
}
public virtual void CurveTo(PointFP control, PointFP point)
{
// Compute forward difference values for a quadratic
// curve of type A*(1-t)^2 + 2*B*t*(1-t) + C*t^2
PointFP f = new PointFP(currPoint);
PointFP tmp = new PointFP((currPoint.X - control.X * 2 + point.X) / SUBDIVIDE2, (currPoint.Y - control.Y * 2 + point.Y) / SUBDIVIDE2);
PointFP ddf = new PointFP(tmp.X * 2, tmp.Y * 2);
PointFP df = new PointFP(tmp.X + (control.X - currPoint.X) * 2 / SUBDIVIDE, tmp.Y + (control.Y - currPoint.Y) * 2 / SUBDIVIDE);
for (int c = 0; c < SUBDIVIDE - 1; c++)
{
f.Add(df); df.Add(ddf); LineTo(f);
}
// We specify the last point manually since
// we obtain rounding errors during the
// forward difference computation.
LineTo(point);
}
public GradientBrushFP(int ff_xmin, int ff_ymin, int ff_xmax, int ff_ymax, int ff_angle, int type)
{
bounds.Reset(ff_xmin, ff_ymin,
ff_xmax == ff_xmin ? ff_xmin + 1 : ff_xmax,
ff_ymax == ff_ymin ? ff_ymin + 1 : ff_ymax);
matrix = new MatrixFP();
matrix.Translate(-(ff_xmin + ff_xmax) / 2, -(ff_ymin + ff_ymax) / 2);
matrix.Rotate(-ff_angle);
this.type = type;
if (type == RADIAL_GRADIENT)
{
matrix.Scale(MathFP.Div(SingleFP.One, bounds.Width), MathFP.Div(SingleFP.One, bounds.Height));
}
int ff_ang = MathFP.Atan(MathFP.Div(bounds.Height, bounds.Width == 0 ? 1 : bounds.Width));
int ff_len = PointFP.Distance(bounds.Height, bounds.Width);
ff_length = MathFP.Mul(ff_len, MathFP.Max(
MathFP.Abs(MathFP.Cos(ff_angle - ff_ang)),
MathFP.Abs(MathFP.Cos(ff_angle + ff_ang))));
}
public override void LineTo(PointFP point)
{
if (point.Equals(currPoint))
{
return;
}
LineFP head, tail;
CalcHeadTail(currPoint, point, head = new LineFP(), tail = new LineFP());
if (drawingCurve)
{
if (lastCurveTail != null)
{
curvePath1.AddLineTo(lastCurveTail.P1);
curvePath2.AddLineTo(lastCurveTail.P2);
}
lastCurveTail = new LineFP(tail);
}
else
{
if (needDrawStartCap)
{
//AddLineCap(point, currPoint, startLineCap);
startCapP1 = new PointFP(currPoint);
startCapP2 = new PointFP(point);
needDrawStartCap = false;
}
AddLineJoin(lastPoint, currPoint, point);
outline.AddMoveTo(head.P1);
outline.AddLineTo(tail.P1);
outline.AddLineTo(tail.P2);
outline.AddLineTo(head.P2);
outline.AddLineTo(head.P1);
outline.AddClose();
lastPoint = new PointFP(currPoint);
}
base.LineTo(point);
}
public static PointFP CalcControlPoint(PointFP p1, PointFP p2, PointFP p3, int ff_factor)
{
PointFP ps = new PointFP(p2.X + MathFP.Mul(p2.X - p1.X, ff_factor), p2.Y + MathFP.Mul(p2.Y - p1.Y, ff_factor));
return(new LineFP(new LineFP(p2, ps).Center, new LineFP(p2, p3).Center).Center);
}
public void AddLineTo(PointFP point)
{
ExtendIfNeeded(1, 1);
cmds[cmdsSize++] = CMD_LINETO;
pnts[pntsSize++] = new PointFP(point);
}
public virtual void LineTo(PointFP point)
{
currPoint.Reset(point);
}
public void Reset(PointFP p1, PointFP p2)
{
this.P1.Reset(p1);
this.P2.Reset(p2);
}
