javafx.scene.shape.Arc#getRadiusX ( )源码实例Demo

/**
 * Converts the given JavaFX {@link Arc} to a
 * {@link org.eclipse.gef.geometry.planar.Arc}.
 *
 * @param arc
 *            The JavaFX {@link Arc} to convert.
 * @return The newly created {@link org.eclipse.gef.geometry.planar.Arc}
 *         that describes the given {@link Arc}.
 */
public static org.eclipse.gef.geometry.planar.Arc toArc(Arc arc) {
	return new org.eclipse.gef.geometry.planar.Arc(
			arc.getCenterX() - arc.getRadiusX(),
			arc.getCenterY() - arc.getRadiusY(),
			arc.getRadiusX() + arc.getRadiusX(),
			arc.getRadiusY() + arc.getRadiusY(),
			Angle.fromDeg(arc.getStartAngle()),
			Angle.fromDeg(arc.getLength()));
}
 

public static String convertArc(final Arc ARC) {
    StringBuilder fxPath = new StringBuilder();
    double centerX    = ARC.getCenterX();
    double centerY    = ARC.getCenterY();
    double radiusX    = ARC.getRadiusX();
    double radiusY    = ARC.getRadiusY();
    double startAngle = Math.toRadians(-ARC.getStartAngle());
    double endAngle   = Math.toRadians(-ARC.getStartAngle() - ARC.getLength());
    double length     = ARC.getLength();

    double startX = radiusX * Math.cos(startAngle);
    double startY = radiusY * Math.sin(startAngle);

    double endX   = centerX + radiusX * Math.cos(endAngle);
    double endY   = centerY + radiusY * Math.sin(endAngle);

    int xAxisRot  = 0;
    int largeArc  = (length > 180) ? 1 : 0;
    int sweep     = (length < 0) ? 1 : 0;

    fxPath.append("M ").append(centerX).append(" ").append(centerY).append(" ");

    if (ArcType.ROUND == ARC.getType()) {
        fxPath.append("l ").append(startX).append(" ").append(startY).append(" ");
    }

    fxPath.append("A ").append(radiusX).append(" ").append(radiusY).append(" ")
          .append(xAxisRot).append(" ").append(largeArc).append(" ").append(sweep).append(" ")
          .append(endX).append(" ").append(endY).append(" ");
    if (ArcType.CHORD == ARC.getType() || ArcType.ROUND == ARC.getType()) {
        fxPath.append("Z");
    }
    return fxPath.toString();
}
 

@Override
protected void clipPath(final Arc arc) {
	if(!model.getArcStyle().supportArrow()) {
		arc.setClip(null);
		return;
	}

	final double width = Math.max(arc.getRadiusX() * 2d, 1d);
	double sAngle = model.getAngleStart();
	double eAngle = model.getAngleEnd();
	Arrow arr = model.getArrowAt(1);
	final double gap = Math.atan(arr.getArrowShapeLength() / width);

	if(arr.getArrowStyle().isReducingShape()) {
		if(eAngle > sAngle) {
			eAngle -= gap;
		}else {
			eAngle += gap;
		}
	}

	arr = model.getArrowAt(0);
	if(arr.getArrowStyle().isReducingShape()) {
		if(eAngle > sAngle) {
			sAngle += gap;
		}else {
			sAngle -= gap;
		}
	}

	sAngle = Math.toDegrees(sAngle % (2d * Math.PI));
	eAngle = Math.toDegrees(eAngle % (2d * Math.PI));

	if(MathUtils.INST.equalsDouble(sAngle, eAngle)) {
		eAngle += 0.1;
	}

	final Arc clip = new Arc(arc.getCenterX(), arc.getCenterY(), arc.getRadiusX(), arc.getRadiusY(), sAngle, eAngle - sAngle);
	clip.setType(arc.getType());
	clip.setStrokeWidth(arc.getStrokeWidth());
	arc.setClip(clip);
}
 

private Arc cloneArc(final Arc arc) {
	final Arc clone = new Arc(arc.getCenterX(), arc.getCenterY(), arc.getRadiusX(), arc.getRadiusY(), arc.getStartAngle(), arc.getLength());
	clone.setType(arc.getType());
	return clone;
}