private void addSimpleSegments() {
int size = pathPoints.size();
for (int i = 0; i < size; i++) {
PathPoint curP = (PathPoint) pathPoints.get(i);
addToGeneralPath(curP, curP.lineTo);
}
if (needClosePath) gp.closePath();
}
private void addClippedLine(PathPoint prevP, PathPoint curP, Rectangle viewRect) {
// check if both points on screen
if (viewRect.contains(prevP) && viewRect.contains(curP)) {
// draw line to point
addToGeneralPath(curP, true);
return;
}
// at least one point is not on screen: clip line at screen
Point2D.Double[] clippedPoints =
ClipLine.getClipped(
prevP.x, prevP.y, curP.x, curP.y, -10, view.width + 10, -10, view.height + 10);
if (clippedPoints != null) {
// we have two intersection points with the screen
// get closest clip point to prevP
int first = 0;
int second = 1;
if (clippedPoints[first].distance(prevP.x, prevP.y)
> clippedPoints[second].distance(prevP.x, prevP.y)) {
first = 1;
second = 0;
}
// draw line to first clip point
addToGeneralPath(clippedPoints[first], true);
// draw line between clip points: this ensures high quality rendering
// which Java2D doesn't deliver with the regular float GeneralPath and huge coords
addToGeneralPath(clippedPoints[second], true);
// draw line to end point if not already there
addToGeneralPath(getPointCloseToScreen(curP.x, curP.y), true);
} else {
// line is off screen
// draw line to off screen end point
addToGeneralPath(getPointCloseToScreen(curP.x, curP.y), true);
}
}
/**
* Clip all segments at screen to make sure we don't have to render huge coordinates. This is
* especially important for fill the GeneralPath.
*/
private void addClippedSegments() {
Rectangle viewRect = new Rectangle(0, 0, view.width, view.height);
PathPoint curP = null, prevP;
int size = pathPoints.size();
for (int i = 0; i < size; i++) {
prevP = curP;
curP = (PathPoint) pathPoints.get(i);
if (!curP.lineTo || prevP == null) {
// moveTo point, make sure it is only slightly outside screen
Point2D p = getPointCloseToScreen(curP.x, curP.y);
addToGeneralPath(p, false);
} else {
// clip line at screen
addClippedLine(prevP, curP, viewRect);
}
}
if (needClosePath) {
// line from last point to first point
addClippedLine(curP, (PathPoint) pathPoints.get(0), viewRect);
gp.closePath();
}
}