public void MoveTo_Test()
{
PDFGraphicsPath target = new PDFGraphicsPath();
Assert.IsTrue(target.Paths.Count == 1);
Assert.IsTrue(target.HasCurrentPath);
Assert.AreEqual(target.Cursor, PDFPoint.Empty);
PDFPoint pos = new PDFPoint(10, 10);
target.MoveTo(pos);
Assert.AreEqual(target.Cursor, pos);
Assert.AreEqual(target.Paths[0].Operations.Count, 1);
Assert.IsInstanceOfType(target.Paths[0].Operations[0], typeof(PathMoveData));
PathMoveData data = (PathMoveData)target.Paths[0].Operations[0];
Assert.AreEqual(data.MoveTo, pos);
pos = new PDFPoint(40, 40);
target.MoveTo(pos);
Assert.AreEqual(target.Cursor, pos);
Assert.AreEqual(target.Paths[0].Operations.Count, 2);
Assert.IsInstanceOfType(target.Paths[0].Operations[1], typeof(PathMoveData));
data = (PathMoveData)target.Paths[0].Operations[1];
Assert.AreEqual(data.MoveTo, pos);
}
private void ParseSVGMoveCommand(PDFGraphicsPath path, char cmd, bool absolute, string[] args)
{
int index = 0;
PDFUnit x, y;
while (index < args.Length)
{
//must be at least an x and y, but can optionally be more x and y's
if (index == 0 || !string.IsNullOrEmpty(args[index]))
{
if (AssertParseUnit(args, ref index, cmd, out x) && AssertParseUnit(args, ref index, cmd, out y))
{
if (absolute)
{
path.MoveTo(new PDFPoint(x, y));
}
else
{
path.MoveBy(new PDFPoint(x, y));
}
}
}
else if (string.IsNullOrEmpty(args[index]))
{
index++;
}
}
}
protected override PDFGraphicsPath CreatePath(PDFSize available, Style fullstyle)
{
var bounds = this.GetBounds();
var xoffset = bounds.X.PointsValue;
var yoffset = bounds.Y.PointsValue;
PDFGraphicsPath path = new PDFGraphicsPath();
if (null != this.Points)
{
for (int i = 0; i < this.Points.Count; i++)
{
var pt = this.Points[i];
pt = pt.Offset(-xoffset, -yoffset);
if (i == 0)
{
path.MoveTo(pt);
}
else
{
path.LineTo(pt);
}
}
}
return(path);
}
public void Bounds_Test()
{
PDFGraphicsPath target = new PDFGraphicsPath();
Assert.IsTrue(target.Paths.Count == 1);
Assert.IsTrue(target.HasCurrentPath);
PDFPoint pos = new PDFPoint(10, 10);
target.MoveTo(pos);
PDFPoint end = new PDFPoint(100, 100);
PDFPoint handleStart = new PDFPoint(0, 50);
PDFPoint handleEnd = new PDFPoint(50, 100);
target.CubicCurveForWithHandleEnd(end, handleEnd);
end = end.Offset(pos);
handleEnd = handleEnd.Offset(pos);
handleStart = handleStart.Offset(pos);
PDFRect bounds = target.Bounds;
Assert.AreEqual(bounds.X, PDFUnit.Zero);
Assert.AreEqual(bounds.Y, PDFUnit.Zero);
Assert.AreEqual(bounds.Width, end.X);
Assert.AreEqual(bounds.Height, end.Y);
}
public void CubicForWithHandleEnd_Test()
{
PDFGraphicsPath target = new PDFGraphicsPath();
Assert.IsTrue(target.Paths.Count == 1);
Assert.IsTrue(target.HasCurrentPath);
PDFPoint pos = new PDFPoint(10, 10);
target.MoveTo(pos);
Assert.AreEqual(target.Cursor, pos);
PDFPoint end = new PDFPoint(100, 100);
PDFPoint handleStart = new PDFPoint(0, 50);
PDFPoint handleEnd = new PDFPoint(50, 100);
target.CubicCurveForWithHandleEnd(end, handleEnd);
end = end.Offset(pos);
handleEnd = handleEnd.Offset(pos);
handleStart = handleStart.Offset(pos);
Assert.AreEqual(target.Cursor, end);
Assert.AreEqual(target.Paths[0].Operations.Count, 2);
Assert.IsInstanceOfType(target.Paths[0].Operations[1], typeof(PathBezierCurveData));
PathBezierCurveData data = (PathBezierCurveData)target.Paths[0].Operations[1];
Assert.AreEqual(data.Points.Length, 3);
Assert.IsFalse(data.HasStartHandle);
Assert.IsTrue(data.HasEndHandle);
Assert.AreEqual(data.EndPoint, end);
Assert.AreEqual(data.StartHandle, PDFPoint.Empty);
Assert.AreEqual(data.EndHandle, handleEnd);
}
//
// helper methods
//
#region protected virtual void BuildPath(PDFGraphicsPath path, PDFPoint[] points, PDFStyle style, bool end)
/// <summary>
/// Adds a series of lines to the path based on the points. Moving to the first in the array, adding lines after, and optionally closing and ending the path.
/// </summary>
/// <param name="path">The path to build the lines in</param>
/// <param name="points">The points to add lines between</param>
/// <param name="close">Closes the path (adds an extra line back to the starting point</param>
/// <param name="end">If true then ends the path so no more points can be added to it</param>
protected virtual void BuildPath(PDFGraphicsPath path, PDFPoint[] points, Style style, bool end)
{
if (path.HasCurrentPath == false)
{
path.BeginPath();
}
for (int i = 0; i < points.Length; i++)
{
if (i == 0)
{
path.MoveTo(points[i]);
}
else
{
path.LineTo(points[i]);
}
}
bool closed = style.GetValue(StyleKeys.ShapeClosedKey, true);
if (closed)
{
path.ClosePath(end);
}
else if (end)
{
path.EndPath();
}
}
protected override PDFGraphicsPath CreatePath(PDFSize available, Style fullstyle)
{
//We use top left zero based moving and line
var bounds = this.GetBounds();
var x1 = this.X1 - bounds.X;
var x2 = this.X2 - bounds.X;
var y1 = this.Y1 - bounds.Y;
var y2 = this.Y2 - bounds.Y;
var path = new PDFGraphicsPath();
path.MoveTo(new PDFPoint(x1, y1));
path.LineTo(new PDFPoint(x2, y2));
return(path);
}
public static void BuildElipse(PDFGraphicsPath path, PDFRect rect, bool closed, double angle)
{
double width = rect.Width.PointsValue;
double height = rect.Height.PointsValue;
if (width <= 0 || height <= 0)
{
return;
}
// build the ellipse around the origin
// rotate each by the required amount
// then translate into position.
double centerX = rect.Width.PointsValue / 2.0;
double centerY = rect.Height.PointsValue / 2.0;
double radX = width / 2.0;
double radY = height / 2.0;
double lengthX = (double)((width * CircularityFactor) / 2.0);
double lengthY = (double)((height * CircularityFactor) / 2.0);
double rotation = angle * InRadians;
//start at left, middle
PDFPoint start = Rotate(new PDFPoint(-radX, 0), rotation);
//4 curve definitions with 3 points each.
PDFPoint[,] curves = new PDFPoint[4, 3];
//arc to center, top
curves[0, 0] = Rotate(new PDFPoint(0, -radY), rotation);
curves[0, 1] = Rotate(new PDFPoint(-radX, -lengthY), rotation);
curves[0, 2] = Rotate(new PDFPoint(-lengthX, -radY), rotation);
//arc to right, middle
curves[1, 0] = Rotate(new PDFPoint(radX, 0), rotation);
curves[1, 1] = Rotate(new PDFPoint(lengthX, -radY), rotation);
curves[1, 2] = Rotate(new PDFPoint(radX, -lengthY), rotation);
//arc to center, bottom
curves[2, 0] = Rotate(new PDFPoint(0, radY), rotation);
curves[2, 1] = Rotate(new PDFPoint(radX, lengthY), rotation);
curves[2, 2] = Rotate(new PDFPoint(lengthX, radY), rotation);
//arc to left middle
curves[3, 0] = Rotate(new PDFPoint(-radX, 0), rotation);
curves[3, 1] = Rotate(new PDFPoint(-lengthX, radY), rotation);
curves[3, 2] = Rotate(new PDFPoint(-radX, lengthY), rotation);
//get the minimun x and y values
PDFUnit minx = start.X;
PDFUnit miny = start.Y;
for (int i = 0; i < 4; i++)
{
for (int j = 0; j < 3; j++)
{
PDFPoint pt = curves[i, j];
minx = PDFUnit.Min(minx, pt.X);
miny = PDFUnit.Min(miny, pt.Y);
}
}
PDFUnit offsetx = 0 - minx;
PDFUnit offsety = 0 - miny;
//translate the point by the minimum values so the topleft is always 0,0 in the boundary rect.
start = Translate(start, offsetx, offsety);
for (int i = 0; i < 4; i++)
{
for (int j = 0; j < 3; j++)
{
PDFPoint pt = curves[i, j];
pt = Translate(pt, offsetx, offsety);
curves[i, j] = pt;
}
}
path.MoveTo(start);
path.CubicCurveTo(curves[0, 0], curves[0, 1], curves[0, 2]);
path.CubicCurveTo(curves[1, 0], curves[1, 1], curves[1, 2]);
path.CubicCurveTo(curves[2, 0], curves[2, 1], curves[2, 2]);
path.CubicCurveTo(curves[3, 0], curves[3, 1], curves[3, 2]);
//close
if (closed)
{
path.ClosePath(true);
}
else
{
path.EndPath();
}
}
protected override PDFGraphicsPath CreatePath(PDFSize available, Style fullstyle)
{
PDFPositionOptions pos = fullstyle.CreatePostionOptions();
PDFPoint start = PDFPoint.Empty;
PDFPoint end = new PDFPoint(available.Width, start.Y);
if (pos.X.HasValue)
{
start.X = pos.X.Value;
}
if (pos.Y.HasValue)
{
start.Y = pos.Y.Value;
end.Y = pos.Y.Value;
}
if (pos.Width.HasValue)
{
end.X = pos.Width.Value + start.X;
if (pos.Height.HasValue)
{
end.Y = pos.Height.Value - start.Y;
}
else // no hight so this is a horizontal line
{
end.Y = start.Y;
}
}
else if (pos.FillWidth)
{
end.X = available.Width - start.X;
if (pos.Height.HasValue)
{
end.Y = pos.Height.Value - start.Y;
}
else // no hight so this is a horizontal line
{
end.Y = start.Y;
}
}
//no width so if we have a height this is a vertical line
else if (pos.Height.HasValue)
{
end.Y = pos.Height.Value + start.Y;
end.X = start.X;
}
else //default is a horizontal line
{
end.X = available.Width - start.X;
end.Y = start.Y;
}
PDFGraphicsPath path = new PDFGraphicsPath();
path.MoveTo(start);
path.LineTo(end);
return(path);
}
protected virtual void BuildPolygramPath(PDFGraphicsPath path, PDFPoint[] points, int step, bool closed, bool end)
{
if (points.Length < 5)
{
throw new PDFException(Errors.CannotCreatePolygramWithLessThan5Sides, null);
}
if (step >= points.Length)
{
throw new PDFException(Errors.StepCountCannotBeGreaterThanVertexCount);
}
bool[] visited = new bool[points.Length];
int loopcount = 0;
int firstFree = 0;
//checks the integer array of see if everyone has been covered
Func <bool> visitedAll = delegate()
{
for (int i = 0; i < visited.Length; i++)
{
if (visited[i] == false)
{
firstFree = i;
return(false);
}
}
return(true);
};
while (!visitedAll() && loopcount < 10)
{
if (path.HasCurrentPath == false)
{
path.BeginPath();
}
int index = firstFree; //firstFree is set from the visitedAll method
PDFPoint first = points[index];
PDFPoint current = first;
path.MoveTo(current);
do
{
index += step;
if (index >= points.Length)
{
index -= points.Length;
}
current = points[index];
visited[index] = true; //mark the point as visited.
if (current == first)
{
if (closed)
{
path.ClosePath(end);
}
else if (end)
{
path.EndPath();
}
}
else
{
path.LineTo(current);
}
} while (current != first);
path.EndPath();
loopcount++;
}
}
