public override void DrawLine(double x1, double y1, double x2, double y2)
{
if (Clipper.ClipLine(ref x1, ref y1, ref x2, ref y2, Clip.XMin, Clip.YMin, Clip.XMax, Clip.YMax))
{
target.Add(GFXUtil.FloatToInt(x1), GFXUtil.FloatToInt(y1), GFXUtil.FloatToInt(x2), GFXUtil.FloatToInt(y2), currentobject);
}
}
public override void DrawPolyLine(bool close, params double[] xy)
{
if (xy.Length < 1)
{
return;
}
int prevx = GFXUtil.FloatToInt(xy[0]);
int prevy = GFXUtil.FloatToInt(xy[1]);
int startx = prevx, starty = prevy;
int nextx, nexty;
if (xy.Length == 1)
{
DrawLine(prevx, prevy, prevx, prevy);
return;
}
for (int l = 2; l < xy.Length; l += 2)
{
nextx = GFXUtil.FloatToInt(xy[l]);
nexty = GFXUtil.FloatToInt(xy[l + 1]);
DrawLine(prevx, prevy, nextx, nexty);
prevx = nextx;
prevy = nexty;
}
if (close)
{
DrawLine(prevx, prevy, startx, starty);
}
}
private void MarkEllipsisDot(double rx, double ry)
{
int x = GFXUtil.FloatToInt(rx);
int y = GFXUtil.FloatToInt(ry);
SetPixel(x, y, Color);
SetPixel(x + 1, y, Color);
SetPixel(x + 1, y + 1, Color);
SetPixel(x, y + 1, Color);
}
public override void FillRectangle(double x1, double y1, double x2, double y2)
{
int ix1 = GFXUtil.FloatToInt(x1);
int iy1 = GFXUtil.FloatToInt(y1);
int ix2 = GFXUtil.FloatToInt(x2);
int iy2 = GFXUtil.FloatToInt(y2);
DrawLine(ix1, iy1, ix2, iy1);
DrawLine(ix2, iy1, ix2, iy2);
DrawLine(ix2, iy2, ix1, iy2);
DrawLine(ix1, iy2, ix1, iy1);
}
/// <summary>
/// Strokes a path using GDI
/// </summary>
/// <param name="trans"></param>
public void InternalStrokePath(GFXPath path, Transform2d trans, bool forceclosed, bool allowmodifypath)
{
int cx = 0, cy = 0, nx, ny;
if (trans == null || trans.IsIdentity)
{
path.Flatten(flattentol, (x, y, moveto) =>
{
if (moveto)
{
cx = GFXUtil.FloatToInt(x);
cy = GFXUtil.FloatToInt(y);
}
else
{
nx = GFXUtil.FloatToInt(x);
ny = GFXUtil.FloatToInt(y);
DrawLine(nx, ny, cx, cy);
//target.Add(nx, ny, cx, cy, currentobject);
cx = nx;
cy = ny;
}
});
}
else
{
path.TransformFlatten(flattentol, trans, (x, y, moveto) =>
{
if (moveto)
{
cx = GFXUtil.FloatToInt(x);
cy = GFXUtil.FloatToInt(y);
}
else
{
nx = GFXUtil.FloatToInt(x);
ny = GFXUtil.FloatToInt(y);
//target.Add(nx, ny, cx, cy, currentobject);
DrawLine(nx, ny, cx, cy);
cx = nx;
cy = ny;
}
});
}
}
public override void DrawEllipticArc(double cx, double cy, double aradius, double bradius, double tilt, double startangle, double sweepangle)
{
/* int prevx=0,prevy=0;
* int nextx,nexty;
* bool first=true;
*
* GeomUtil.FlattenEllipticArc(cx, cy, aradius, bradius, tilt, startangle, sweepangle, flattentol, true, (x, y,moveto) =>
* {
* if (first)
* {
* prevx = GFXUtil.RealToInt(x);
* prevy = GFXUtil.RealToInt(y);
* first = false;
* }
* else
* {
* nextx = GFXUtil.RealToInt(x);
* nexty = GFXUtil.RealToInt(y);
* DrawLine(prevx,prevy,nextx,nexty);
* //target.Add(prevx, prevy, nextx, nexty, currentobject);
* prevx = nextx;
* prevy = nexty;
* }
* });*/
int px = 0, py = 0, nx, ny;
int num = Clipper.ClipEllipticArc(cx, cy, aradius, bradius, tilt, startangle, sweepangle, clipbuffer, Clip.XMin, Clip.YMin, Clip.XMax, Clip.YMax);
for (int l = 0; l < num; l += 2)
{
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)
{
DrawLine(px, py, nx, ny);
}
px = nx;
py = ny;
});
}
}
public override void DrawArc(double x1, double y1, double x2, double y2, double bulge)
{
int prevx = GFXUtil.FloatToInt(x1);
int prevy = GFXUtil.FloatToInt(y1);
int clipres = Clipper.ClipArc(x1, y1, x2, y2, bulge, clipbuffer, Clip.XMin, Clip.YMin, Clip.XMax, Clip.YMax);
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);
target.Add(cx, cy, nx, ny, currentobject);
cx = nx;
cy = ny;
});
}
}
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, Clip.XMin, Clip.YMin, Clip.XMax, Clip.YMax);
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)
{
DrawLine(penx, peny, nextx, nexty);
}
penx = nextx;
peny = nexty;
}, clipbuffer[l], clipbuffer[l + 1]);
}
}
public virtual void DrawMark(double x, double y, MarkType type, int size)
{
double sz = (double)size;
FillStyle oldfill = FillStyle;
if ((type & MarkType.LargeCross) != 0)
{
double sd = sz * 1.414213562; //ie. sqrt(2)
DrawLine(x, y - sd, x, y + sd);
DrawLine(x - sd, y, x + sd, y);
}
else if ((type & MarkType.Cross) != 0)
{
DrawLine(x, y - sz, x, y + sz);
DrawLine(x - sz, y, x + sz, y);
}
else if ((type & MarkType.Slit) != 0)
{
DrawLine(x, y, x, y + sz);
}
else if ((type & MarkType.Pixel) != 0)
{
SetPixel(GFXUtil.FloatToInt(x), GFXUtil.FloatToInt(y), Color);
}
if ((type & MarkType.DiagonalCross) != 0)
{
DrawLine(x - sz, y - sz, x + sz, y + sz);
DrawLine(x - sz, y + sz, x + sz, y - sz);
}
if ((type & MarkType.Triangle) != 0)
{
DrawLine(x - sz, y - sz, x + sz, y - sz);
DrawLine(x + sz, y - sz, x, y + sz);
DrawLine(x, y + sz, x - sz, y - sz);
}
if ((type & MarkType.Roof) != 0)
{
DrawLine(x - sz, y + sz, x + sz, y + sz);
}
if ((type & MarkType.Floor) != 0)
{
DrawLine(x - sz, y - sz, x + sz, y - sz);
}
if ((type & MarkType.Circle) != 0)
{
DrawCircle(x, y, sz);
}
if ((type & MarkType.Diamond) != 0)
{
DrawPolyLine(true, x + sz, y, x, y - sz, x - sz, y, x, y + sz);
}
if ((type & MarkType.FilledRectangle) != 0)
{
FillStyle = FillStyle.Solid;
FillRectangle(x - sz, y - sz, x + sz, y + sz);
}
else if ((type & MarkType.Rectangle) != 0)
{
DrawRectangle(x - sz, y - sz, x + sz, y + sz);
}
if (type.HasFlag(MarkType.Perpendicular))
{
DrawLine(x - sz, y + sz, x - sz, y - sz);
DrawLine(x - sz, y - sz, x + sz, y - sz);
DrawLine(x - sz, y, x, y);
DrawLine(x, y, x, y - sz);
}
if (type.HasFlag(MarkType.Ellipsis))
{
MarkEllipsisDot(x - sz, y - sz);
MarkEllipsisDot(x, y - sz);
MarkEllipsisDot(x + sz, y - sz);
}
FillStyle = oldfill;
}