void CreateEndLineCap(VertexStore outputVxs, Vector v0, Vector v1, double edgeWidth)
{
switch (this.LineCapStyle)
{
default: throw new NotSupportedException();
case LineCap.Butt:
outputVxs.AddLineTo(v0.X, v0.Y);
outputVxs.AddLineTo(v1.X, v1.Y);
break;
case LineCap.Square:
{
Vector delta = (v1 - v0).Rotate(90).NewLength(edgeWidth);
outputVxs.AddLineTo(v0.X + delta.X, v0.Y + delta.Y);
outputVxs.AddLineTo(v1.X + delta.X, v1.Y + delta.Y);
}
break;
case LineCap.Round:
{
capVectors.Clear();
BuildEndCap(v0.X, v0.Y, v1.X, v1.Y, capVectors);
int j = capVectors.Count;
for (int i = j - 1; i >= 0; --i)
{
Vector v = capVectors[i];
outputVxs.AddLineTo(v.X, v.Y);
}
}
break;
}
}
public void GetSmooth()
{
if (this.isValidSmooth)
{
return;
}
this.isValidSmooth = true;
//lets smooth it
//string str1 = dbugDumpPointsToString(contPoints);
//string str2 = dbugDumpPointsToString2(contPoints);
//var data2 = CurvePreprocess.RdpReduce(contPoints, 2);
var data2 = contPoints;
CubicBezier[] cubicBzs = CurveFit.Fit(data2, 8);
//PathWriter pWriter = new PathWriter();
//pWriter.StartFigure();
//int j = cubicBzs.Length;
//for (int i = 0; i < j; ++i)
//{
// CubicBezier bz = cubicBzs[i];
// pWriter.MoveTo(bz.p0.x, bz.p0.y);
// pWriter.LineTo(bz.p0.x, bz.p0.y);
// pWriter.Curve4(bz.p1.x, bz.p1.y,
// bz.p2.x, bz.p2.y,
// bz.p3.x, bz.p3.y);
//}
//pWriter.CloseFigureCCW();
vxs = new VertexStore();
int j = cubicBzs.Length;
//1.
if (j > 0)
{
//1st
CubicBezier bz0 = cubicBzs[0];
vxs.AddMoveTo(bz0.p0.x, bz0.p0.y);
vxs.AddLineTo(bz0.p0.x, bz0.p0.y);
vxs.AddP3c(bz0.p1.x, bz0.p1.y);
vxs.AddP3c(bz0.p2.x, bz0.p2.y);
vxs.AddLineTo(bz0.p3.x, bz0.p3.y);
//-------------------------------
for (int i = 1; i < j; ++i) //start at 1
{
CubicBezier bz = cubicBzs[i];
vxs.AddP3c(bz.p1.x, bz.p1.y);
vxs.AddP3c(bz.p2.x, bz.p2.y);
vxs.AddLineTo(bz.p3.x, bz.p3.y);
}
//-------------------------------
//close
vxs.AddLineTo(bz0.p0.x, bz0.p0.y);
}
vxs.AddCloseFigure();
PixelFarm.Agg.VertexSource.CurveFlattener cflat = new PixelFarm.Agg.VertexSource.CurveFlattener();
vxs = cflat.MakeVxs(vxs);
}
public static void Main()
{
//TEST
//this is low-level scanline rasterizer
//1. create vertex store
VertexStore vxs = new VertexStore();
vxs.AddMoveTo(10, 10);
vxs.AddLineTo(50, 10);
vxs.AddLineTo(50, 50);
vxs.AddLineTo(10, 50);
vxs.AddCloseFigure();
//2. create scanline rasterizer
ScanlineRasterizer sclineRas = new ScanlineRasterizer();
sclineRas.AddPath(vxs);
//3. create destination bitmap
DestBitmapRasterizer destBmpRasterizer = new DestBitmapRasterizer();
//4. create 32bit rgba bitmap blender
MyBitmapBlender myBitmapBlender = new MyBitmapBlender();
//5. create output bitmap
using (MemBitmap membitmap = new MemBitmap(800, 600))
{
//6. attach target bitmap to bitmap blender
myBitmapBlender.Attach(membitmap);
//7. rasterizer sends the vector content inside sclineRas
// to the bitmap blender and
destBmpRasterizer.RenderWithColor(myBitmapBlender, //blender+ output
sclineRas, //with vectors input inside
new ScanlinePacked8(),
Color.Red);
//8. the content inside membitmap is just color image buffer
// you can copy it to other image object (eg SkImage, Gdi+ image etc)
//... example ...
using (System.Drawing.Bitmap bmp = new System.Drawing.Bitmap(membitmap.Width, membitmap.Height))
{
IntPtr mem_ptr = membitmap.GetRawBufferHead();
System.Drawing.Imaging.BitmapData bmpdata = bmp.LockBits(new System.Drawing.Rectangle(0, 0, bmp.Width, bmp.Height), System.Drawing.Imaging.ImageLockMode.WriteOnly, System.Drawing.Imaging.PixelFormat.Format32bppArgb);
unsafe
{
MemMx.memcpy((byte *)bmpdata.Scan0, (byte *)mem_ptr, membitmap.Width * membitmap.Height * 4);
}
bmp.UnlockBits(bmpdata);
bmp.Save("test01.png");
}
}
}
static void BuildOrgImgRectVxs(int srcW, int srcH, VertexStore output)
{
output.Clear();
output.AddMoveTo(0, 0);
output.AddLineTo(srcW, 0);
output.AddLineTo(srcW, srcH);
output.AddLineTo(0, srcH);
output.AddCloseFigure();
}
public void MakeSmoothPath()
{
if (this.isValidSmooth)
{
return;
}
this.isValidSmooth = true;
//--------
if (contPoints.Count == 0)
{
return;
}
//return;
//--------
//lets smooth it
//string str1 = dbugDumpPointsToString(contPoints);
//string str2 = dbugDumpPointsToString2(contPoints);
//var data2 = CurvePreprocess.RdpReduce(contPoints, 2);
var data2 = contPoints;
CubicBezier[] cubicBzs = CurveFit.Fit(data2, 8);
vxs = new VertexStore();
int j = cubicBzs.Length;
//1.
if (j > 0)
{
//1st
CubicBezier bz0 = cubicBzs[0];
vxs.AddMoveTo(bz0.p0.x, bz0.p0.y);
vxs.AddLineTo(bz0.p0.x, bz0.p0.y);
vxs.AddCurve4To(
bz0.p1.x, bz0.p1.y,
bz0.p2.x, bz0.p2.y,
bz0.p3.x, bz0.p3.y);
//-------------------------------
for (int i = 1; i < j; ++i) //start at 1
{
CubicBezier bz = cubicBzs[i];
vxs.AddCurve4To(
bz.p1.x, bz.p1.y,
bz.p2.x, bz.p2.y,
bz.p3.x, bz.p3.y);
}
//-------------------------------
//close
//TODO: we not need this AddLineTo()
vxs.AddLineTo(bz0.p0.x, bz0.p0.y);
}
vxs.AddCloseFigure();
VertexStore v2 = new VertexStore();
cflat.MakeVxs(vxs, v2);
vxs = v2;
}
public ExampleVxsLineDash2Walker()
{
using (Tools.BorrowVxs(out var v1))
{
v1 = new VertexStore();
v1.AddMoveTo(0, -3);
v1.AddLineTo(4, 0);
v1.AddLineTo(0, 3);
v1.AddCloseFigure();
_vxs = v1.CreateTrim();
}
}
public static VertexStore MakeVxs(this Ellipse ellipse, ICoordTransformer tx, VertexStore output)
{
//1. moveto
output.AddMoveTo(ellipse.originX + ellipse.radiusX, ellipse.originY, tx);//**
//2.
//
int numSteps = ellipse.NumSteps;
double anglePerStep = MathHelper.Tau / numSteps;
double angle = 0;
double orgX = ellipse.originX;
double orgY = ellipse.originY;
double radX = ellipse.radiusX;
double radY = ellipse.radiusY;
if (ellipse._cw)
{
for (int i = 1; i < numSteps; i++)
{
angle += anglePerStep;
output.AddLineTo(
orgX + Math.Cos(MathHelper.Tau - angle) * radX,
orgY + Math.Sin(MathHelper.Tau - angle) * radY,
tx);//**
}
}
else
{
for (int i = 1; i < numSteps; i++)
{
angle += anglePerStep;
output.AddLineTo(
orgX + Math.Cos(angle) * radX,
orgY + Math.Sin(angle) * radY,
tx);//**
}
}
//3.
output.AddCloseFigure((int)EndVertexOrientation.CCW, 0);
//4.
output.AddNoMore();
return(output);
}
static void CreateInnerBorder(VertexStore vxs, double x0, double y0, double x1, double y1, double w)
{
//create 'inner border box' of a line a line (x0,y0)=>(x1,y1)
PixelFarm.VectorMath.Vector2 vector = new PixelFarm.VectorMath.Vector2(x1 - x0, y1 - y0);
//for inner border, we don't extend both endpoint
//rotate 270 degree to create a height vector that point 'inside' of the 'rectbox' shape.
//the box height= w
PixelFarm.VectorMath.Vector2 vdiff = vector.RotateInDegree(270).NewLength(w);
vxs.AddMoveTo(x0, y0);
vxs.AddLineTo(x1, y1);
vxs.AddLineTo(x1 + vdiff.x, y1 + vdiff.y);
vxs.AddLineTo(x0 + vdiff.x, y0 + vdiff.y);
vxs.AddCloseFigure();
}
public static void CreateBezierVxs4(VertexStore vxs, Vector2 start, Vector2 end,
Vector2 control1, Vector2 control2)
{
var curve = new VectorMath.BezierCurveCubic(
start, end,
control1, control2);
vxs.AddLineTo(start.x, start.y);
float eachstep = (float)1 / NSteps;
float stepSum = eachstep;//start
for (int i = 1; i < NSteps; ++i)
{
var vector2 = curve.CalculatePoint(stepSum);
vxs.AddLineTo(vector2.x, vector2.y);
stepSum += eachstep;
}
vxs.AddLineTo(end.x, end.y);
}
public static void CreateBezierVxs4(VertexStore vxs, Vector2 start, Vector2 end,
Vector2 control1, Vector2 control2)
{
var curve = new VectorMath.BezierCurveCubic(
start, end,
control1, control2);
vxs.AddLineTo(start.x, start.y);
float eachstep = (float)1 / NSteps;
float stepSum = eachstep;//start
for (int i = 1; i < NSteps; ++i)
{
var vector2 = curve.CalculatePoint(stepSum);
vxs.AddLineTo(vector2.x, vector2.y);
stepSum += eachstep;
}
vxs.AddLineTo(end.x, end.y);
}
public void dbugLine(double x1, double y1, double x2, double y2, Drawing.Color color)
{
dbug_v1.AddMoveTo(x1, y1);
dbug_v1.AddLineTo(x2, y2);
//dbug_v1.AddStop();
dbugStroke.MakeVxs(dbug_v1, dbug_v2);
Render(dbug_v2, color);
dbug_v1.Clear();
dbug_v2.Clear();
}
public static void CreateBezierVxs3(VertexStore vxs, Vector2 start, Vector2 end,
Vector2 control1)
{
var curve = new VectorMath.BezierCurveQuadric(
start, end,
control1);
vxs.AddLineTo(start.x, start.y);
float eachstep = (float)1 / NSteps;
float stepSum = eachstep;//start
for (int i = 1; i < NSteps; ++i)
{
var vector2 = curve.CalculatePoint(stepSum);
vxs.AddLineTo(vector2.x, vector2.y);
stepSum += eachstep;
}
vxs.AddLineTo(end.x, end.y);
//------------------------------------------------------
//convert c3 to c4
//Vector2 c4p2, c4p3;
//Curve3GetControlPoints(start, control1, end, out c4p2, out c4p3);
//CreateBezierVxs4(vxs, start, end, c4p2, c4p3);
}
public void MakeVxs(VertexStore vxs)
{
int contourCount = _contours.Count;
for (int i = 0; i < contourCount; ++i)
{
//each contour
RawContour contour = _contours[i];
List <Point> xyCoords = contour._xyCoords;
int count = xyCoords.Count;
if (count > 1)
{
if (contour.IsOutside)
{
Point p = xyCoords[0];
vxs.AddMoveTo(p.X, p.Y);
for (int n = 1; n < count; ++n)
{
p = xyCoords[n];
vxs.AddLineTo(p.X, p.Y);
}
vxs.AddCloseFigure();
}
else
{
Point p = xyCoords[count - 1];
vxs.AddMoveTo(p.X, p.Y);
for (int n = count - 1; n >= 0; --n)
{
p = xyCoords[n];
vxs.AddLineTo(p.X, p.Y);
}
vxs.AddCloseFigure();
}
}
}
}
public void MakeLines(VertexStore vxs)
{
int j = m_points.Count;
if (j > 0)
{
//others
for (int i = 1; i < j; i++)
{
var p = m_points[i];
vxs.AddLineTo(p.x, p.y);
}
}
}
static void CreateOuterBorder(VertexStore vxs, double x0, double y0, double x1, double y1, double w)
{
//create 'outer border box' of a line (x0,y0)=>(x1,y1)
PixelFarm.VectorMath.Vector2 vector = new PixelFarm.VectorMath.Vector2(x1 - x0, y1 - y0);
//for outer border, we need to extend both endpoints with len w
//this will create overlapped area outside the shape.
PixelFarm.VectorMath.Vector2 ext_vec = vector.NewLength(w);
x0 -= ext_vec.x;
y0 -= ext_vec.y;
x1 += ext_vec.x;
y1 += ext_vec.y;
//rotate 90 degree to create a height vector that point to 'outside' of the 'rectbox' shape.
//the box height= w
PixelFarm.VectorMath.Vector2 h_vec = vector.RotateInDegree(90).NewLength(w);
vxs.AddMoveTo(x0, y0);
vxs.AddLineTo(x0 + h_vec.x, y0 + h_vec.y);
vxs.AddLineTo(x1 + h_vec.x, y1 + h_vec.y);
vxs.AddLineTo(x1, y1);
vxs.AddCloseFigure();
}
public static void CreateBezierVxs3(VertexStore vxs, Vector2 start, Vector2 end,
Vector2 control1)
{
var curve = new VectorMath.BezierCurveQuadric(
start, end,
control1);
vxs.AddLineTo(start.x, start.y);
float eachstep = (float)1 / NSteps;
float stepSum = eachstep;//start
for (int i = 1; i < NSteps; ++i)
{
var vector2 = curve.CalculatePoint(stepSum);
vxs.AddLineTo(vector2.x, vector2.y);
stepSum += eachstep;
}
vxs.AddLineTo(end.x, end.y);
//------------------------------------------------------
//convert c3 to c4
//Vector2 c4p2, c4p3;
//Curve3GetControlPoints(start, control1, end, out c4p2, out c4p3);
//CreateBezierVxs4(vxs, start, end, c4p2, c4p3);
}
public static void MakeLines(this Curve3Div curve, VertexStore vxs)
{
ArrayList <Vector2> m_points = curve.GetInternalPoints();
int j = m_points.Count;
if (j > 0)
{
//others
for (int i = 1; i < j; i++)
{
var p = m_points[i];
vxs.AddLineTo(p.x, p.y);
}
}
}
public void MakeRegularPath(float strokeW)
{
if (this.isValidSmooth)
{
return;
}
this.isValidSmooth = true;
//--------
if (contPoints.Count == 0)
{
return;
}
//SimplifyPaths();
_stroke1.Width = strokeW * 2;
_stroke1.LineCap = LineCap.Round;
_stroke1.LineJoin = LineJoin.Round;
var tmpVxs = new VertexStore();
int j = contPoints.Count;
for (int i = 0; i < j; ++i)
{
//TODO: review here
//
Vector2 v = contPoints[i];
if (i == 0)
{
tmpVxs.AddMoveTo(v.x, v.y);
}
else
{
tmpVxs.AddLineTo(v.x, v.y);
}
}
////
VertexStore v2 = new VertexStore();
_stroke1.MakeVxs(tmpVxs, v2);
vxs = v2;
//release vxs to pool
}
static void SimpleSolidLine(VertexStore outputVxs, VertexCmd cmd, double x, double y)
{
//solid
switch (cmd)
{
default: throw new NotSupportedException();
case VertexCmd.MoveTo:
outputVxs.AddMoveTo(x, y);
break;
case VertexCmd.LineTo:
outputVxs.AddLineTo(x, y);
break;
}
}
public void Close()
{
this.vxs = new VertexStore();
int j = contPoints.Count;
if (j > 0)
{
var p = contPoints[0];
vxs.AddMoveTo(p.x, p.y);
for (int i = 1; i < j; ++i)
{
p = contPoints[i];
vxs.AddLineTo(p.x, p.y);
}
vxs.AddCloseFigure();
}
}
void CreateBorder(VertexStore vxs, Vertex2d prev, Vertex2d now, Vertex2d next0, Vertex2d next1)
{
//now we are on now
using (Tools.BorrowVxs(out var vxs1))
{
vxs.AddMoveTo(now.x, now.y);
//create outer line-join
_strokeMath.CreateJoin(vxs1, prev, now, next0);
vxs.AppendVertexStore(vxs1);
//create inner line join
//next outer line join
vxs1.Clear();//reuse
_strokeMath.CreateJoin(vxs1, now, next0, next1);
vxs.AppendVertexStore(vxs1);
vxs.AddLineTo(next0.x, next0.y);
vxs.AddCloseFigure();
}
}
void GetExampleVxs(VertexStore outputVxs)
{
//counter-clockwise
//a triangle
//outputVxs.AddMoveTo(10, 20);
//outputVxs.AddLineTo(50, 60);
//outputVxs.AddLineTo(70, 20);
//outputVxs.AddCloseFigure();
//a quad
//outputVxs.AddMoveTo(10, 20);
//outputVxs.AddLineTo(50, 60);
//outputVxs.AddLineTo(70, 20);
//outputVxs.AddLineTo(50, 10);
//outputVxs.AddCloseFigure();
////curve4
//outputVxs.AddMoveTo(5, 5);
//outputVxs.AddLineTo(50, 60);
//outputVxs.AddCurve4To(70, 20, 50, 10, 10, 5);
//outputVxs.AddCloseFigure();
//curve3
//outputVxs.AddMoveTo(5, 5);
//outputVxs.AddLineTo(50, 60);
//outputVxs.AddCurve3To(70, 20, 10, 5);
//outputVxs.AddCloseFigure();
//a quad with hole
outputVxs.AddMoveTo(10, 20);
outputVxs.AddLineTo(50, 60);
outputVxs.AddLineTo(70, 20);
outputVxs.AddLineTo(50, 10);
outputVxs.AddCloseFigure();
outputVxs.AddMoveTo(30, 30);
outputVxs.AddLineTo(40, 30);
outputVxs.AddLineTo(40, 35);
outputVxs.AddLineTo(30, 35);
outputVxs.AddCloseFigure();
}
public static void CreateBezierVxs3(VertexStore vxs,
double x0, double y0,
double x1, double y1,
double x2, double y2)
{
//1. subdiv technique
s_curve3Div.Init(x0, y0, x1, y1, x2, y2);
ArrayList <Vector2> points = s_curve3Div.GetInternalPoints();
int n = 0;
for (int i = points.Length - 1; i >= 0; --i)
{
Vector2 p = points[n++];
vxs.AddLineTo(p.x, p.y);
}
//2. old tech -- use incremental
//var curve = new VectorMath.BezierCurveQuadric(
// new Vector2(x0, y0),
// new Vector2(x1, y1),
// new Vector2(x2, y2));
//vxs.AddLineTo(x0, y0);
//float eachstep = (float)1 / NSteps;
//float stepSum = eachstep;//start
//for (int i = NSteps - 1; i >= 0; --i)
//{
// var vector2 = curve.CalculatePoint(stepSum);
// vxs.AddLineTo(vector2.x, vector2.y);
// stepSum += eachstep;
//}
//vxs.AddLineTo(x2, y2);
}
static void CreateBezierVxs4(VertexStore vxs,
double x0, double y0,
double x1, double y1,
double x2, double y2,
double x3, double y3)
{
//1. subdiv technique
s_curve4Div.Init(x0, y0, x1, y1, x2, y2, x3, y3);
ArrayList <Vector2> points = s_curve4Div.GetInternalPoints();
int n = 0;
for (int i = points.Length - 1; i >= 0; --i)
{
Vector2 p = points[n++];
vxs.AddLineTo(p.x, p.y);
}
//----------------------------------------
//2. old tech -- use incremental
//var curve = new VectorMath.BezierCurveCubic(
// start, end,
// control1, control2);
//vxs.AddLineTo(start.x, start.y);
//float eachstep = (float)1 / NSteps;
//float stepSum = eachstep;//start
//for (int i = NSteps - 1; i >= 0; --i)
//{
// var vector2 = curve.CalculatePoint(stepSum);
// vxs.AddLineTo(vector2.x, vector2.y);
// stepSum += eachstep;
//}
//vxs.AddLineTo(end.x, end.y);
}
protected override void OnStartDemo(SampleViewport viewport)
{
SvgPart svgPart = new SvgPart(SvgRenderVxKind.Path);
VertexStore vxs = new VertexStore();
vxs.AddMoveTo(100, 20);
vxs.AddLineTo(150, 50);
vxs.AddLineTo(110, 80);
vxs.AddCloseFigure();
//-------------------------------------------
svgPart.SetVxsAsOriginal(vxs);
svgPart.FillColor = Color.Red;
SvgRenderVx svgRenderVx = new SvgRenderVx(new SvgPart[] { svgPart });
svgRenderVx.DisableBackingImage = true;
var uiSprite = new UISprite(10, 10); //init size = (10,10), location=(0,0)
uiSprite.LoadSvg(svgRenderVx);
viewport.AddContent(uiSprite);
var spriteEvListener = new GeneralEventListener();
uiSprite.AttachExternalEventListener(spriteEvListener);
//box1 = new LayoutFarm.CustomWidgets.SimpleBox(50, 50);
//box1.BackColor = Color.Red;
//box1.SetLocation(10, 10);
////box1.dbugTag = 1;
//SetupActiveBoxProperties(box1);
//viewport.AddContent(box1);
//--------
rectBoxController.Init();
//polygonController.Visible = false;
viewport.AddContent(polygonController);
//-------------------------------------------
viewport.AddContent(rectBoxController);
//foreach (var ui in rectBoxController.GetControllerIter())
//{
// viewport.AddContent(ui);
//}
spriteEvListener.MouseDown += e1 =>
{
//mousedown on ui sprite
polygonController.SetPosition((int)uiSprite.Left, (int)uiSprite.Top);
polygonController.SetTargetUISprite(uiSprite);
polygonController.UpdateControlPoints(svgPart);
};
spriteEvListener.MouseMove += e1 =>
{
if (e1.IsDragging)
{
//drag event on uisprite
int left = (int)uiSprite.Left;
int top = (int)uiSprite.Top;
int new_left = left + e1.DiffCapturedX;
int new_top = top + e1.DiffCapturedY;
uiSprite.SetLocation(new_left, new_top);
//-----
//also update controller position
polygonController.SetPosition(new_left, new_top);
}
};
}
public static void AddLineTo(this VertexStore vxs, double x, double y, ICoordTransformer tx)
{
tx.Transform(ref x, ref y);
vxs.AddLineTo(x, y);
}
public void MakeLines(VertexStore vxs)
{
int j = m_points.Count;
if (j > 0)
{
//others
for (int i = 1; i < j; i++)
{
var p = m_points[i];
vxs.AddLineTo(p.x, p.y);
}
}
}
public void LineTo(double x, double y)
{
this.latestSVGPathCmd = SvgPathCommand.LineTo;
myvxs.AddLineTo(this.lastX = x, this.lastY = y);
}
public void LineTo(double x1, double y1)
{
_latestSVGPathCmd = SvgPathCommand.LineTo;
_myvxs.AddLineTo(_latest_x = x1, _latest_y = y1);
}
public ShapeBuilder LineTo(double x1, double y1)
{
_vxs.AddLineTo(x1, y1);
return(this);
}
public void Append(double x, double y)
{
_vxs.AddLineTo(x, y);
}
public void AddLineTo(LineWalkerMark maker, double x, double y) => _vxs.AddLineTo(x, y);
public void LineTo(double x1, double y1)
{
this.latestSVGPathCmd = SvgPathCommand.LineTo;
myvxs.AddLineTo(this.latest_x = x1, this.latest_y = y1);
}