// Create the highlight, and put it at the given location.
// Set displayUpdateNeeded to true if the highlight was just created or was moved.
void SetHighlightLocation(PointF highlightLocation, float pixelSize, ref bool displayUpdateNeeded)
{
if (highlight != null && highlight.location == highlightLocation)
return;
// Note, we cannot change this existing highlight because it is needed for erasing.
switch (specialKind) {
case SpecialKind.FirstAid:
highlight = new FirstAidCourseObj(Id<Special>.None, scaleRatio, appearance, highlightLocation);
break;
case SpecialKind.Water:
highlight = new WaterCourseObj(Id<Special>.None, scaleRatio, appearance, highlightLocation);
break;
case SpecialKind.OptCrossing:
highlight = new CrossingCourseObj(Id<ControlPoint>.None, Id<CourseControl>.None, Id<Special>.None, scaleRatio, appearance, 0, highlightLocation);
break;
case SpecialKind.Forbidden:
highlight = new ForbiddenCourseObj(Id<Special>.None, scaleRatio, appearance, highlightLocation);
break;
case SpecialKind.RegMark:
highlight = new RegMarkCourseObj(Id<Special>.None, scaleRatio, appearance, highlightLocation);
break;
default:
throw new Exception("bad special kind");
}
highlight.location = highlightLocation;
displayUpdateNeeded = true;
}
// 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);
}
}
// Create the highlight, and put it at the given location.
// Set displayUpdateNeeded to true if the highlight was just created or was moved.
void SetHighlightLocation(PointF highlightLocation, float pixelSize, ref bool displayUpdateNeeded)
{
if (highlight != null && highlight.location == highlightLocation)
return;
PointF unused;
Id<ControlPoint> existingControl = HitTestPoint(highlightLocation, pixelSize, out unused);
// Get where the control is being inserted.
CourseDesignator courseDesignator;
Id<CourseControl> courseControl1, courseControl2;
GetControlInsertionPoint(highlightLocation, out courseDesignator, out courseControl1, out courseControl2);
// Note, we cannot changed this existing highlight because it is needed for erasing.
additionalHighlights = null;
switch (controlKind) {
case ControlPointKind.Normal:
highlight = new ControlCourseObj(Id<ControlPoint>.None, Id<CourseControl>.None, scaleRatio, appearance, null, highlightLocation);
if (courseDesignator.IsNotAllControls &&
!(exchangeAtControl && existingControl.IsNotNone && QueryEvent.CourseUsesControl(eventDB, courseDesignator, existingControl)) &&
eventDB.GetCourse(courseDesignator.CourseId).kind != CourseKind.Score) {
// Show the legs to and from the control also as additional highlights.
additionalHighlights = CreateLegHighlights(eventDB, highlightLocation, Id<ControlPoint>.None, controlKind, courseControl1, courseControl2, scaleRatio, appearance);
}
break;
case ControlPointKind.Start:
highlight = new StartCourseObj(Id<ControlPoint>.None, Id<CourseControl>.None, scaleRatio, appearance, 0, highlightLocation, CrossHairOptions.HighlightCrossHair);
break;
case ControlPointKind.MapExchange:
highlight = new StartCourseObj(Id<ControlPoint>.None, Id<CourseControl>.None, scaleRatio, appearance, 0, highlightLocation, CrossHairOptions.HighlightCrossHair);
if (courseDesignator.IsNotAllControls && eventDB.GetCourse(courseDesignator.CourseId).kind != CourseKind.Score) {
// Show the legs to and from the control also as additional highlights.
additionalHighlights = CreateLegHighlights(eventDB, highlightLocation, Id<ControlPoint>.None, controlKind, courseControl1, courseControl2, scaleRatio, appearance);
}
break;
case ControlPointKind.Finish:
highlight = new FinishCourseObj(Id<ControlPoint>.None, Id<CourseControl>.None, scaleRatio, appearance, null, highlightLocation, CrossHairOptions.HighlightCrossHair);
break;
case ControlPointKind.CrossingPoint:
highlight = new CrossingCourseObj(Id<ControlPoint>.None, Id<CourseControl>.None, Id<Special>.None, scaleRatio, appearance, 0, highlightLocation);
if (courseDesignator.IsNotAllControls && eventDB.GetCourse(courseDesignator.CourseId).kind != CourseKind.Score) {
// Show the legs to and from the control also as additional highlights.
additionalHighlights = CreateLegHighlights(eventDB, highlightLocation, Id<ControlPoint>.None, controlKind, courseControl1, courseControl2, scaleRatio, appearance);
}
break;
default:
throw new Exception("bad control kind");
}
highlight.location = highlightLocation;
displayUpdateNeeded = true;
}
// Cut "controlObj" with respect to "courseObj", if courseObj is close enough to overlap.
private static void CutControlWithRespectTo(PointCourseObj controlObj, PointCourseObj courseObj)
{
float radiusControl = controlObj.ApparentRadius;
float radiusOther = courseObj.ApparentRadius;
double distance = Geometry.Distance(controlObj.location, courseObj.location);
if (distance < (radiusControl + radiusOther) * 0.9F && distance > (radiusControl + radiusOther) * 0.35F) {
// The other object is close enough to the control to merit cutting, but not too close. (0.9 and 0.35 were just arrived by what looks good.)
// Law of cosines...
double arcCos = (radiusControl * radiusControl + distance * distance - radiusOther * radiusOther) / (2 * radiusControl * distance);
float halfAngleGap = (float) (180 * Math.Acos(arcCos) / Math.PI);
float angleGap = Geometry.Angle(controlObj.location, courseObj.location);
controlObj.gaps = CircleGap.AddGap(controlObj.gaps, angleGap - halfAngleGap, angleGap + halfAngleGap);
}
}
// Check this control and add cuts to it if needed.
private static void AutoCutControl(PointCourseObj controlObj, CourseLayout courseLayout)
{
foreach (CourseObj courseObj in courseLayout) {
if (courseObj != controlObj && courseObj.layer == controlObj.layer && courseObj is PointCourseObj)
CutControlWithRespectTo(controlObj, (PointCourseObj)courseObj);
}
}
public AddControlGapMode(Controller controller, PointCourseObj courseObj)
{
this.controller = controller;
this.courseObjStart = (PointCourseObj) courseObj.Clone();
this.courseObjDrag = (PointCourseObj) courseObj.Clone();
}
PointCourseObj courseObj; // object to modify.
#endregion Fields
#region Constructors
public RemoveControlGapMode(Controller controller, PointCourseObj courseObj)
{
this.controller = controller;
this.courseObj = (PointCourseObj) courseObj.Clone();
}
public override void LeftButtonDrag(Pane pane, PointF location, PointF locationStart, float pixelSize, ref bool displayUpdateNeeded)
{
Debug.Assert(pane == Pane.Map);
// Get the new set of gaps.
CircleGap[] newGaps = CircleGap.AddGap(courseObjStart.location, courseObjStart.gaps, startDrag, location);
CircleGap[] newMovableGaps = CircleGap.AddGap(courseObjStart.location, courseObjStart.movableGaps, startDrag, location);
// Put the new gaps into the highlight.
courseObjDrag = (PointCourseObj) courseObjStart.Clone();
courseObjDrag.gaps = newGaps;
courseObjDrag.movableGaps = newMovableGaps;
displayUpdateNeeded = true;
}