public override void DrawArc(double x1, double y1, double x2, double y2, double bulge)
{
if (thinlinemode != ThinLineModeFlag.OwnThinLines)
{
base.DrawArc(x1, y1, x2, y2, bulge);
return;
}
stipplebit = 0x8000;
int clipres = Clipper.ClipArc(x1, y1, x2, y2, bulge, clipbuffer, clipMinX, clipMinY, clipMaxX, clipMaxY);
for (int idx = 0; idx < clipres; idx += 5)
{
int cx = GFXUtil.FloatToInt(clipbuffer[idx]), cy = GFXUtil.FloatToInt(clipbuffer[idx + 1]), nx, ny;
GeomUtil.FlattenArc(clipbuffer[idx], clipbuffer[idx + 1], clipbuffer[idx + 2], clipbuffer[idx + 3], clipbuffer[idx + 4], false, flattentol, (x, y, moveto) =>
{
nx = GFXUtil.FloatToInt(x);
ny = GFXUtil.FloatToInt(y);
Line_Internal(cx, cy, nx, ny, x2 == x && y2 == y); //set last point if last segment
cx = nx;
cy = ny;
});
}
}
public override void DrawLine(double x1, double y1, double x2, double y2)
{
if (thinlinemode != ThinLineModeFlag.OwnThinLines)
{
base.DrawLine(x1, y1, x2, y2);
return;
}
stipplebit = 0x8000;
Line_Internal(GFXUtil.FloatToInt(x1), GFXUtil.FloatToInt(y1), GFXUtil.FloatToInt(x2), GFXUtil.FloatToInt(y2), true);
}
public override void DrawEllipticArc(double cx, double cy, double aradius, double bradius, double tilt, double startangle, double sweepangle)
{
if (thinlinemode != ThinLineModeFlag.OwnThinLines)
{
base.DrawEllipticArc(cx, cy, aradius, bradius, tilt, startangle, sweepangle);
return;
}
/* stipplebit = 0x8000;
*
* int px=0,py=0,nx,ny;
* bool first = true;
*
* GeomUtil.FlattenEllipticArc(cx, cy, aradius, bradius, tilt, startangle, sweepangle, flattentol, true, (x, y,moveto) =>
* {
* nx = GFXUtil.RealToInt(x);
* ny = GFXUtil.RealToInt(y);
* if (!first)
* Line_Internal(px, py, nx, ny, true); //TODO: can we skip last pixel except on last segment?
* else
* first = false;
*
*
* px = nx;
* py = ny;
* });*/
int px = 0, py = 0, nx, ny;
int num = Clipper.ClipEllipticArc(cx, cy, aradius, bradius, tilt, startangle, sweepangle, clipbuffer, clipMinX, clipMinY, clipMaxX, clipMaxY);
for (int l = 0; l < num; l += 2)
{
stipplebit = 0x8000;
GeomUtil.FlattenEllipticArc(cx, cy, aradius, bradius, tilt, clipbuffer[l], clipbuffer[l + 1] - clipbuffer[l], flattentol, true, (x, y, moveto) =>
{
nx = GFXUtil.FloatToInt(x);
ny = GFXUtil.FloatToInt(y);
if (!moveto)
{
Line_Internal(px, py, nx, ny, true); //TODO: can we skip last pixel except on last segment?
}
px = nx;
py = ny;
});
}
}
public override void DrawRectangleT(double x1, double y1, double x2, double y2)
{
if (thinlinemode != ThinLineModeFlag.OwnThinLines)
{
base.DrawRectangleT(x1, y1, x2, y2);
return;
}
stipplebit = 0x8000;
//convert to four points as poly to be able to transform
double x3 = x2;
double y3 = y2;
y2 = y1;
double x4 = x1;
double y4 = y3;
Transform.Apply(x1, y1, out x1, out y1, true);
Transform.Apply(x2, y2, out x2, out y2, true);
Transform.Apply(x3, y3, out x3, out y3, true);
Transform.Apply(x4, y4, out x4, out y4, true);
int ix1 = GFXUtil.FloatToInt(x1);
int iy1 = GFXUtil.FloatToInt(y1);
int ix2 = GFXUtil.FloatToInt(x2);
int iy2 = GFXUtil.FloatToInt(y2);
int ix3 = GFXUtil.FloatToInt(x3);
int iy3 = GFXUtil.FloatToInt(y3);
int ix4 = GFXUtil.FloatToInt(x4);
int iy4 = GFXUtil.FloatToInt(y4);
//check for pixel sized rectangle
if (ix1 == ix2 && ix2 == ix3 && ix3 == ix4 && iy1 == iy2 && iy2 == iy3 && iy3 == iy4)
{
SetPixel(ix1, iy1, color);
return;
}
Line_Internal(ix1, iy1, ix2, iy2, false);
Line_Internal(ix2, iy2, ix3, iy3, false);
Line_Internal(ix3, iy3, ix4, iy4, false);
Line_Internal(ix4, iy4, ix1, iy1, false);
}
public override void DrawPolyLine(bool close, params double[] xy)
{
if (thinlinemode != ThinLineModeFlag.OwnThinLines)
{
base.DrawPolyLine(close, xy);
return;
}
stipplebit = 0x8000;
int n = xy.Length;
if (xy.Length < 2)
{
return;
}
int prevx = GFXUtil.FloatToInt(xy[0]);
int prevy = GFXUtil.FloatToInt(xy[1]);
int firstx = prevx;
int firsty = prevy;
int lastidx = n - 2;
for (int l = 0; l < n;)
{
bool lastpixel = l == lastidx;
int nextx = GFXUtil.FloatToInt(xy[l++]);
int nexty = GFXUtil.FloatToInt(xy[l++]);
Line_Internal(prevx, prevy, nextx, nexty, lastpixel);
prevx = nextx;
prevy = nexty;
}
if (close)
{
Line_Internal(prevx, prevy, firstx, firsty, false);
}
}
private void InternalDrawBezier(double x1, double y1, double x2, double y2, double x3, double y3, double x4, double y4)
{
int n = Clipper.ClipBezier(x1, y1, x2, y2, x3, y3, x4, y4, clipbuffer, clipMinX, clipMinY, clipMaxX, clipMaxY);
int penx = 0, peny = 0;
for (int l = 0; l < n; l += 2)
{
GeomUtil.FlattenBezier(x1, y1, x2, y2, x3, y3, x4, y4, true, flattentol, (x, y, moveto) =>
{
int nextx = GFXUtil.FloatToInt(x);
int nexty = GFXUtil.FloatToInt(y);
if (!moveto)
{
Line_Internal(penx, peny, nextx, nexty, false);
}
penx = nextx;
peny = nexty;
}, clipbuffer[l], clipbuffer[l + 1]);
}
}
public override void DrawRectangle(double x1, double y1, double x2, double y2)
{
if (thinlinemode != ThinLineModeFlag.OwnThinLines)
{
base.DrawRectangle(x1, y1, x2, y2);
return;
}
stipplebit = 0x8000;
int ix1 = GFXUtil.FloatToInt(x1);
int iy1 = GFXUtil.FloatToInt(y1);
int ix2 = GFXUtil.FloatToInt(x2);
int iy2 = GFXUtil.FloatToInt(y2);
if (ix1 == ix2)
{
if (iy1 == iy2)
{
SetPixel(ix1, iy1, color);
return;
}
else
{
Line_Internal(ix1, iy1, ix1, iy2, true); //vertical line
return;
}
}
else if (iy1 == iy2)
{
Line_Internal(ix1, iy1, ix2, iy1, true); //horizontal line
return;
}
Line_Internal(ix1, iy1, ix2, iy1, false);
Line_Internal(ix2, iy1, ix2, iy2, false);
Line_Internal(ix2, iy2, ix1, iy2, false);
Line_Internal(ix1, iy2, ix1, iy1, false);
}
/// <summary>
/// Create a GDI+ Pen that corresponds to a Painter setup
/// </summary>
/// <param name="p"></param>
/// <returns></returns>
public static Pen CreateLinePenFromPainter(Painter p)
{
Color c = PainterGDIPlus.RGBToColor(p.Color);
if (p.Opacity < 0.999)
{
c = Color.FromArgb(GFXUtil.FloatToInt(MathUtil.Clamp(p.Opacity * 255.0, 0.0, 255.0)), c);
}
Pen linepen = new Pen(c, (float)Math.Abs(p.LineWidth)); //0 means the thinnest possible on device
switch (p.LineStyle)
{
case LineStyle.Continuous: break; //done already
case LineStyle.Custom:
SetCustomDashes(p.LineStyleDashes, p.LineWidth, linepen);
linepen.DashStyle = DashStyle.Custom;
break;
case LineStyle.Dash:
linepen.DashPattern = new float[] { 8, 8 };
linepen.DashStyle = DashStyle.Custom;
break;
case LineStyle.DashDotDot:
linepen.DashPattern = new float[] { 7, 2, 2, 1, 2, 2 };
linepen.DashStyle = DashStyle.Custom;
break;
case LineStyle.DashDot:
linepen.DashPattern = new float[] { 8, 3, 2, 3 };
linepen.DashStyle = DashStyle.Custom;
break;
case LineStyle.Dot:
linepen.DashPattern = new float[] { 4, 4 };
linepen.DashStyle = DashStyle.Custom;
break;
}
/* if (p.LineStyle != LineStyle.Continuous)
* {
* //linepen.DashStyle = LineStyleToDashStyle(p.LineStyle);
* linepen.DashStyle = DashStyle.Custom;
* if (p.LineStyle == LineStyle.Custom)
* SetCustomDashes(p.LineStyleDashes, linepen);
* else if (p.LineStyle == LineStyle.Dot)
* linepen.DashPattern = new float[] { 4, 4 };
* else
* linepen.DashPattern = new float[] { 10, 4, 4, 4 };
*
*
*
* }
*/
LineCap ecap;
DashCap dcap;
if (p.EndCaps != EndCap.Flat) //flat is default for pen and thus need no change
{
GetEndCap(p.EndCaps, out ecap, out dcap);
linepen.EndCap = ecap;
linepen.StartCap = ecap;
linepen.DashCap = dcap;
}
if (p.LineJoin != LineJoin.Miter) //miter is default and thus needs no change
{
linepen.LineJoin = GetLineJoin(p.LineJoin);
}
return(linepen);
}
public override void DrawCircle(double cx, double cy, double radius)
{
if (thinlinemode != ThinLineModeFlag.OwnThinLines)
{
base.DrawCircle(cx, cy, radius);
return;
}
stipplebit = 0x8000;
int nx = 0, ny = 0, px = 0, py = 0;
int buffersize = Clipper.ClipCircle(cx, cy, radius, clipbuffer, clipMinX, clipMinY, clipMaxX, clipMaxY);
if (buffersize <= 0)
{
return;
}
if (buffersize >= 5) //circle is clipped to arcs
{ //the circle is divided into arc(s)
double bulge, x1, y1, x2, y2;
for (int l = 0; l < buffersize; l += 5)
{
x1 = clipbuffer[l];
y1 = clipbuffer[l + 1];
x2 = clipbuffer[l + 2];
y2 = clipbuffer[l + 3];
bulge = clipbuffer[l + 4];
//draw arc here instead of calling DrawArc to avoid arc clipping because we already clipped!
GeomUtil.FlattenArc(x1, y1, x2, y2, bulge, true, flattentol, (x, y, moveto) =>
{
if (moveto)
{
px = GFXUtil.FloatToInt(x);
py = GFXUtil.FloatToInt(y);
}
else
{
nx = GFXUtil.FloatToInt(x);
ny = GFXUtil.FloatToInt(y);
Line_Internal(px, py, nx, ny, false);
px = nx;
py = ny;
}
});
}
return;
}
for (double l = -1; l <= 1.0001; l += 2)
{ //2 arcs gives circle //TODO: make flatten circle in GeomUtil instead
GeomUtil.FlattenArc(cx + radius * l, cy, cx - radius * l, cy, 1.0, true, flattentol, (x, y, moveto) =>
{
if (moveto)
{
px = GFXUtil.FloatToInt(x);
py = GFXUtil.FloatToInt(y);
}
else
{
nx = GFXUtil.FloatToInt(x);
ny = GFXUtil.FloatToInt(y);
Line_Internal(px, py, nx, ny, false);
px = nx;
py = ny;
}
});
}
}