| public CurveTo ( float x2, float y2, float x3, float y3 ) : void | ||
| x2 | float | |
| y2 | float | |
| x3 | float | |
| y3 | float | |
| return | void | |
//copied this because of the moveTo
public void Arc(float x1, float y1, float x2, float y2, float startAng, float extent, PdfContentByte cb)
{
List<float[]> ar = PdfContentByte.BezierArc(x1, y1, x2, y2, startAng, extent);
if (ar.Count == 0)
return;
float[] pt = ar[0];
//moveTo(pt[0], pt[1]);
for (int k = 0; k < ar.Count; ++k)
{
pt = ar[k];
cb.CurveTo(pt[2], pt[3], pt[4], pt[5], pt[6], pt[7]);
}
}
void DrawElement(PdfContentByte cb)
{
try
{
IList<PathItem> translatedItems = Translate(path.PathItems);
//loop over the items in the path
foreach (PathItem item in translatedItems)
{
IList<float> numbers = item.Coordinates;
if (item.IsMoveTo())
{
cb.MoveTo(numbers[0], numbers[1]);
}
else if (item.IsLineTo())
{
cb.LineTo(numbers[0], numbers[1]);
}
else if (item.IsCubicBezier())
{
cb.CurveTo(numbers[0], numbers[1], numbers[2], numbers[3], numbers[4], numbers[5]);
}
else if (item.IsQuadraticBezier())
{
cb.CurveTo(numbers[0], numbers[1], numbers[2], numbers[3]);
}
else if (item.IsArcTo())
{
DrawArc(cb, numbers);
}
else if (item.IsClosePath())
{
cb.ClosePath();
}
else
{
//System.out.Println(item);
}
}
} catch {
//TODO
}
}
// ---------------------------------------------------------------------------
/**
* Draws a series of Bezier curves
* @param cb the canvas to which the curves have to be drawn
* @param x0 X coordinate of the start point
* @param y0 Y coordinate of the start point
* @param x1 X coordinate of the first control point
* @param y1 Y coordinate of the first control point
* @param x2 X coordinate of the second control point
* @param y2 Y coordinate of the second control point
* @param x3 X coordinate of the end point
* @param y3 Y coordinate of the end point
* @param distance the distance between the curves
*/
public void createBezierCurves(PdfContentByte cb, float x0, float y0,
float x1, float y1, float x2, float y2, float x3,
float y3, float distance)
{
cb.MoveTo(x0, y0);
cb.LineTo(x1, y1);
cb.MoveTo(x2, y2);
cb.LineTo(x3, y3);
cb.MoveTo(x0, y0);
cb.CurveTo(x1, y1, x2, y2, x3, y3);
x0 += distance;
x1 += distance;
x2 += distance;
x3 += distance;
cb.MoveTo(x2, y2);
cb.LineTo(x3, y3);
cb.MoveTo(x0, y0);
cb.CurveTo(x2, y2, x3, y3);
x0 += distance;
x1 += distance;
x2 += distance;
x3 += distance;
cb.MoveTo(x0, y0);
cb.LineTo(x1, y1);
cb.MoveTo(x0, y0);
cb.CurveTo(x1, y1, x3, y3);
cb.Stroke();
}
// ---------------------------------------------------------------------------
/**
* Creates a path for circle using Bezier curvers.
* The path can be constructed clockwise or counter-clockwise.
* This method doesn't Fill or stroke the circle!
* @param canvas the canvas for which the path is constructed
* @param x the X coordinate of the center of the circle
* @param y the Y coordinate of the center of the circle
* @param r the radius
* @param clockwise true if the circle has to be constructed clockwise
*/
public static void CreateCircle(PdfContentByte canvas, float x, float y,
float r, bool clockwise)
{
float b = 0.5523f;
if (clockwise) {
canvas.MoveTo(x + r, y);
canvas.CurveTo(x + r, y - r * b, x + r * b, y - r, x, y - r);
canvas.CurveTo(x - r * b, y - r, x - r, y - r * b, x - r, y);
canvas.CurveTo(x - r, y + r * b, x - r * b, y + r, x, y + r);
canvas.CurveTo(x + r * b, y + r, x + r, y + r * b, x + r, y);
} else {
canvas.MoveTo(x + r, y);
canvas.CurveTo(x + r, y + r * b, x + r * b, y + r, x, y + r);
canvas.CurveTo(x - r * b, y + r, x - r, y + r * b, x - r, y);
canvas.CurveTo(x - r, y - r * b, x - r * b, y - r, x, y - r);
canvas.CurveTo(x + r * b, y - r, x + r, y - r * b, x + r, y);
}
}
