/**
* Writes the <code>shape</code>, <code>coords</code>, <code>href</code>,
* <code>nohref</code> Attribute for the specified figure and shape.
*
* @return Returns true, if the polygon is inside of the image bounds.
*/
private boolean writePolyAttributes(IXMLElement elem, SVGFigure f, Shape shape) {
AffineTransform t = TRANSFORM.getClone(f);
if (t == null) {
t = drawingTransform;
} else {
t.preConcatenate(drawingTransform);
}
StringBuilder buf = new StringBuilder();
float[] coords = new float[6];
GeneralPath path = new GeneralPath();
for (PathIterator i = shape.getPathIterator(t, 1.5f);
! i.isDone(); i.next()) {
switch (i.currentSegment(coords)) {
case PathIterator.SEG_MOVETO :
if (buf.length() != 0) {
throw new IllegalArgumentException("Illegal shape "+shape);
}
if (buf.length() != 0) {
buf.append(',');
}
buf.append((int) coords[0]);
buf.append(',');
buf.append((int) coords[1]);
path.moveTo(coords[0], coords[1]);
break;
case PathIterator.SEG_LINETO :
if (buf.length() != 0) {
buf.append(',');
}
buf.append((int) coords[0]);
buf.append(',');
buf.append((int) coords[1]);
path.lineTo(coords[0], coords[1]);
break;
case PathIterator.SEG_CLOSE :
path.closePath();
break;
default :
throw new InternalError("Illegal segment type "+i.currentSegment(coords));
}
}
elem.setAttribute("shape", "poly");
elem.setAttribute("coords", buf.toString());
writeHrefAttribute(elem, f);
return path.intersects(new Rectangle2D.Float(bounds.x, bounds.y, bounds.width, bounds.height));
}
public void addGlyph(GlyphData gv, float x, float y) {
AffineTransform at = AffineTransform.getTranslateInstance(x, y);
PathIterator pi = gv.gp.getPathIterator(at);
float[] coords = new float[6];
while (!pi.isDone()) {
int type = pi.currentSegment(coords);
switch (type) {
case PathIterator.SEG_MOVETO:
moveTo(coords[0], coords[1]);
break;
case PathIterator.SEG_LINETO:
lineTo(coords[0], coords[1]);
break;
case PathIterator.SEG_CUBICTO:
curveTo(coords[0], coords[1], coords[2], coords[3], coords[4], coords[5]);
break;
case PathIterator.SEG_CLOSE:
closePath();
break;
default:
System.out.println("Unknown path type: " + type);
break;
}
pi.next();
}
}
protected int convertPathData(Shape s, AffineTransform at) {
PathIterator pi = s.getPathIterator(at);
double[] coords = new double[6];
double currX = 0;
double currY = 0;
while (!pi.isDone()) {
int curOp = pi.currentSegment(coords);
int pointIndex;
switch (curOp) {
case PathIterator.SEG_MOVETO:
ops.addByte(CAIRO_PATH_OP_MOVE_TO);
pointIndex = points.getNextIndex();
points.setX(pointIndex, DoubleToCairoFixed(coords[0]));
points.setY(pointIndex, DoubleToCairoFixed(coords[1]));
currX = coords[0];
currY = coords[1];
break;
case PathIterator.SEG_LINETO:
ops.addByte(CAIRO_PATH_OP_LINE_TO);
pointIndex = points.getNextIndex();
points.setX(pointIndex, DoubleToCairoFixed(coords[0]));
points.setY(pointIndex, DoubleToCairoFixed(coords[1]));
currX = coords[0];
currY = coords[1];
break;
/** q0 = p0 q1 = (p0+2*p1)/3 q2 = (p2+2*p1)/3 q3 = p2 */
case PathIterator.SEG_QUADTO:
double x1 = coords[0];
double y1 = coords[1];
double x2, y2;
double x3 = coords[2];
double y3 = coords[3];
x2 = x1 + (x3 - x1) / 3;
y2 = y1 + (y3 - y1) / 3;
x1 = currX + 2 * (x1 - currX) / 3;
y1 = currY + 2 * (y1 - currY) / 3;
ops.addByte(CAIRO_PATH_OP_CURVE_TO);
pointIndex = points.getNextIndex();
points.setX(pointIndex, DoubleToCairoFixed(x1));
points.setY(pointIndex, DoubleToCairoFixed(y1));
pointIndex = points.getNextIndex();
points.setX(pointIndex, DoubleToCairoFixed(x2));
points.setY(pointIndex, DoubleToCairoFixed(y2));
pointIndex = points.getNextIndex();
points.setX(pointIndex, DoubleToCairoFixed(x3));
points.setY(pointIndex, DoubleToCairoFixed(y3));
currX = x3;
currY = y3;
break;
case PathIterator.SEG_CUBICTO:
ops.addByte(CAIRO_PATH_OP_CURVE_TO);
pointIndex = points.getNextIndex();
points.setX(pointIndex, DoubleToCairoFixed(coords[0]));
points.setY(pointIndex, DoubleToCairoFixed(coords[1]));
pointIndex = points.getNextIndex();
points.setX(pointIndex, DoubleToCairoFixed(coords[2]));
points.setY(pointIndex, DoubleToCairoFixed(coords[3]));
pointIndex = points.getNextIndex();
points.setX(pointIndex, DoubleToCairoFixed(coords[4]));
points.setY(pointIndex, DoubleToCairoFixed(coords[5]));
currX = coords[4];
currY = coords[5];
break;
case PathIterator.SEG_CLOSE:
ops.addByte(CAIRO_PATH_OP_CLOSE_PATH);
break;
}
pi.next();
}
return pi.getWindingRule();
}
/**
* Wrapper method around the <tt>paintText()</tt> method of the <tt>VisualEdgePainter</tt>
* interface. This method performs the calculation to determine the position where the text will
* be drawn.
*/
private void paintText(VisualEdge vEdge, Graphics2D g2d) {
Point fromPoint = new Point();
Point toPoint = new Point();
GeneralPath gPath = vEdge.getGeneralPath();
PathIterator iterator = gPath.getPathIterator(null);
FontMetrics fontMetrics;
float edgeSegment[] = new float[6];
double currentLength = 0;
float cumulativeLength = 0;
float x1 = 0, y1 = 0, x2 = 0, y2 = 0;
int segmentType;
boolean firstPointInitialized = false;
// Get the total length of the edge
float edgeLength = vEdge.getEdgeLength(vEdge, fromPoint, toPoint);
while (!iterator.isDone()) {
segmentType = iterator.currentSegment(edgeSegment);
switch (segmentType) {
case PathIterator.SEG_LINETO:
case PathIterator.SEG_MOVETO:
x2 = edgeSegment[0];
y2 = edgeSegment[1];
break;
case PathIterator.SEG_QUADTO:
x2 = edgeSegment[2];
y2 = edgeSegment[3];
break;
case PathIterator.SEG_CUBICTO:
x2 = edgeSegment[4];
y2 = edgeSegment[5];
}
if (firstPointInitialized) {
currentLength = Point2D.distance(x1, y1, x2, y2);
cumulativeLength += currentLength;
}
iterator.next();
// If we are halfway through the length of the edge,
// then paint the text
if (cumulativeLength >= (edgeLength / 2) || cumulativeLength >= edgeLength) {
// Ratio of the remaining half-length over the length of the current edge
double ratio = ((edgeLength / 2) - (cumulativeLength - currentLength)) / currentLength;
fontMetrics = vEdge.getFontMetrics();
// Take into account the text's length
this.paintText(
g2d,
vEdge.getFont(),
vEdge.getFontcolor(),
vEdge.getLabel(),
(float)
(fromPoint.getX() < toPoint.getX()
? (x1 + (Math.abs(x2 - x1) * ratio))
: (x1 - (Math.abs(x2 - x1) * ratio)))
- fontMetrics.stringWidth(vEdge.getLabel()) / 2,
(float)
(fromPoint.getY() < toPoint.getY()
? (y1 + (Math.abs(y2 - y1) * ratio))
: (y1 - (Math.abs(y2 - y1) * ratio))));
break;
}
x1 = x2;
y1 = y2;
if (!firstPointInitialized) {
firstPointInitialized = true;
}
}
}
public Shape createStrokedShape(Shape shape) {
GeneralPath result = new GeneralPath();
PathIterator it = new FlatteningPathIterator(shape.getPathIterator(null), FLATNESS);
float points[] = new float[6];
float moveX = 0, moveY = 0;
float lastX = 0, lastY = 0;
float thisX = 0, thisY = 0;
int type = 0;
boolean first = false;
float next = 0;
int phase = 0;
float factor = 1;
while (!it.isDone()) {
type = it.currentSegment(points);
switch (type) {
case PathIterator.SEG_MOVETO:
moveX = lastX = points[0];
moveY = lastY = points[1];
result.moveTo(moveX, moveY);
first = true;
next = wavelength / 2;
break;
case PathIterator.SEG_CLOSE:
points[0] = moveX;
points[1] = moveY;
// Fall into....
case PathIterator.SEG_LINETO:
thisX = points[0];
thisY = points[1];
float dx = thisX - lastX;
float dy = thisY - lastY;
float distance = (float) Math.sqrt(dx * dx + dy * dy);
if (distance >= next) {
float r = 1.0f / distance;
float angle = (float) Math.atan2(dy, dx);
while (distance >= next) {
float x = lastX + next * dx * r;
float y = lastY + next * dy * r;
float tx = amplitude * dy * r;
float ty = amplitude * dx * r;
if ((phase & 1) == 0) result.lineTo(x + amplitude * dy * r, y - amplitude * dx * r);
else result.lineTo(x - amplitude * dy * r, y + amplitude * dx * r);
next += wavelength;
phase++;
}
}
next -= distance;
first = false;
lastX = thisX;
lastY = thisY;
if (type == PathIterator.SEG_CLOSE) result.closePath();
break;
}
it.next();
}
// return stroke.createStrokedShape( result );
return result;
}
