// Cut the leg "legObj" with respect to "otherObj", if they overlap
private static void CutLegWithRespectTo(EventDB eventDB, CourseAppearance appearance, CourseDesignator courseDesignator, LineCourseObj legObj, PointCourseObj otherObj)
{
float radiusOther = otherObj.ApparentRadius;
PointF nearestPointOnLeg;
float distance = legObj.path.DistanceFromPoint(otherObj.location, out nearestPointOnLeg);
if (distance < radiusOther && Geometry.Distance(nearestPointOnLeg, legObj.path.FirstPoint) > 0.5 && Geometry.Distance(nearestPointOnLeg, legObj.path.LastPoint) > 0.5) {
float gapRadius = (float) Math.Sqrt(radiusOther * radiusOther - distance * distance); // pythagorean theorem.
gapRadius += appearance.autoLegGapSize / 2;
CutLegAtPoint(legObj, nearestPointOnLeg, gapRadius);
}
}
// Cut the leg "legObj" with respect to "otherObj", if they intersect
private static void CutLegWithRespectTo(EventDB eventDB, CourseAppearance appearance, CourseDesignator courseDesignator, LineCourseObj legObj, LineCourseObj otherObj)
{
PointF[] intersectionPoints;
if (legObj.path.Intersects(otherObj.path, out intersectionPoints) && intersectionPoints != null) {
// The other line intersections this one. Only the later leg is split.
if (QueryEvent.DoesCourseControlPrecede(eventDB, courseDesignator, otherObj.courseControlId, legObj.courseControlId)) {
foreach (PointF intersectionPoint in intersectionPoints) {
float gapRadius = appearance.autoLegGapSize / 2;
CutLegAtPoint(legObj, intersectionPoint, gapRadius);
}
}
}
}
// Check this leg and add cuts to it if needed.
private static void AutoCutLeg(EventDB eventDB, CourseAppearance appearance, CourseDesignator courseDesignator, LineCourseObj legObj, CourseLayout courseLayout)
{
foreach (CourseObj courseObj in courseLayout) {
if (courseObj != legObj && courseObj.layer == legObj.layer && (courseObj is LegCourseObj || courseObj is FlaggedLegCourseObj))
CutLegWithRespectTo(eventDB, appearance, courseDesignator, legObj, (LineCourseObj)courseObj);
if (courseObj != legObj && courseObj.layer == legObj.layer && courseObj is PointCourseObj)
CutLegWithRespectTo(eventDB, appearance, courseDesignator, legObj, (PointCourseObj)courseObj);
}
}
private static void CutLegAtPoint(LineCourseObj legObj, PointF intersectionPoint, float gapRadius)
{
float distanceAlongLine = legObj.path.LengthToPoint(intersectionPoint);
PointF pt1 = legObj.path.PointAtLength(distanceAlongLine - gapRadius);
PointF pt2 = legObj.path.PointAtLength(distanceAlongLine + gapRadius);
legObj.gaps = LegGap.AddGap(legObj.path, legObj.gaps, pt1, pt2);
}
LineCourseObj courseObj; // object to modify.
#endregion Fields
#region Constructors
public RemoveLegGapMode(Controller controller, LineCourseObj courseObj)
{
this.controller = controller;
this.courseObj = (LineCourseObj) courseObj.Clone();
}
