/** @inheritDoc */
public void lineTo(PointFP point) {
if (point.equals(currPoint)) {
return;
}
LineFP head, tail;
calcHeadTail(currPoint, point, head = new LineFP(), tail = new LineFP());
if (drawingCurve) {
if (lastCurveTail != null) {
curvePath1.addLineTo(lastCurveTail.pt1);
curvePath2.addLineTo(lastCurveTail.pt2);
}
lastCurveTail = new LineFP(tail);
} else {
if (needDrawStartCap) {
startCapP1 = new PointFP(currPoint);
startCapP2 = new PointFP(point);
needDrawStartCap = false;
}
addLineJoin(lastPoint, currPoint, point);
outline.addMoveTo(head.pt1);
outline.addLineTo(tail.pt1);
outline.addLineTo(tail.pt2);
outline.addLineTo(head.pt2);
outline.addLineTo(head.pt1);
outline.addClose();
lastPoint = new PointFP(currPoint);
}
super.lineTo(point);
}
private void addLineJoin(PointFP lastPoint, PointFP currPoint, PointFP nextPoint) {
if (lastPoint == null
|| currPoint == null
|| nextPoint == null
|| nextPoint.equals(currPoint)
|| lastPoint.equals(currPoint)) {
return;
}
PointFP p1 = null, p2 = null;
LineFP head, tail, lastHead, lastTail;
calcHeadTail(currPoint, nextPoint, head = new LineFP(), tail = new LineFP());
calcHeadTail(lastPoint, currPoint, lastHead = new LineFP(), lastTail = new LineFP());
boolean cross1, cross2, needLineJoin = false;
PointFP pi1 = new PointFP();
PointFP pi2 = new PointFP();
cross1 =
LineFP.intersects(
new LineFP(head.pt1, tail.pt1), new LineFP(lastHead.pt1, lastTail.pt1), pi1);
cross2 =
LineFP.intersects(
new LineFP(head.pt2, tail.pt2), new LineFP(lastHead.pt2, lastTail.pt2), pi2);
if (cross1 && !cross2 && pi1.x != SingleFP.NaN) {
p1 = lastTail.pt2;
p2 = head.pt2;
needLineJoin = true;
} else if (!cross1 && cross2 && pi2.x != SingleFP.NaN) {
p1 = lastTail.pt1;
p2 = head.pt1;
needLineJoin = true;
}
if (needLineJoin) {
outline.addMoveTo(cross1 ? pi1 : pi2);
outline.addLineTo(cross1 ? p2 : p1);
if (lineJoin == PenFP.LINEJOIN_MITER) {
outline.addLineTo(cross1 ? pi2 : pi1);
}
outline.addLineTo(cross1 ? p1 : p2);
outline.addClose();
if (lineJoin == PenFP.LINEJOIN_ROUND) {
addLineCap(cross2 ? pi2 : pi1, currPoint, PenFP.LINECAP_ROUND);
}
}
}
private void addLineCap(PointFP p1, PointFP p2, int lineCap) {
if (lineCap == PenFP.LINECAP_BUTT || p1.equals(p2)) {
return;
}
int dx = p2.x - p1.x;
int dy = p2.y - p1.y;
int len = PointFP.distance(dx, dy);
PointFP[] cap =
lineCap == PenFP.LINECAP_ROUND ? GraphicsPathFP.ROUNDCAP : GraphicsPathFP.SQUARECAP;
dx = MathFP.mul(ff_rad, MathFP.div(dx, len));
dy = MathFP.mul(ff_rad, MathFP.div(dy, len));
MatrixFP m = new MatrixFP(dx, dx, dy, -dy, p2.x, p2.y);
outline.addMoveTo(new PointFP(0, GraphicsPathFP.ONE).transform(m));
for (int i = 0; i < cap.length; i++) {
outline.addLineTo(new PointFP(cap[i]).transform(m));
}
outline.addLineTo(new PointFP(0, -GraphicsPathFP.ONE).transform(m));
outline.addClose();
}
