/// <summary>
/// out Upoint 未実装
/// </summary>
/// <param name="l"></param>
/// <param name="point"></param>
/// <returns></returns>
public IntersectType intersect(LDLine l, out LDPoint point)
{
IntersectType intersect;
if (MathFunctions.uFuzzyCompare(this.angle(), l.angle()))
{
point = null;
intersect = IntersectType.NoIntersection;
}
else
{
LDLine lp12 = new LDLine(this.pt1, l.pt1);
LDLine lp22 = new LDLine(this.pt1, l.pt2);
LDLine lp11 = new LDLine(l.pt1, this.pt1);
LDLine lp21 = new LDLine(l.pt1, this.pt2);
if (((this.angleTo(lp12) - 180f) * (this.angleTo(lp22) - 180f) < 0) &&
((this.angleTo(lp11) - 180f) * (this.angleTo(lp21) - 180f) < 0))
{
point = null;
intersect = IntersectType.BoundedIntersection;
}
else
{
point = null;
intersect = IntersectType.UnboundedIntersection;
}
}
return(intersect);
}
/// <summary>
///
/// </summary>
/// <param name="l"></param>
/// <param name="point"></param>
/// <returns></returns>
public IntersectType intersect(LDLine l, out LDPoint point)
{
LDPoint pointA = this.pt1;
LDPoint pointB = this.pt2;
LDPoint pointC = l.pt1;
LDPoint pointD = l.pt2;
float dBunbo = (pointB.x() - pointA.x())
* (pointD.y() - pointC.y())
- (pointB.y() - pointA.y())
* (pointD.x() - pointC.x());
if (0 == dBunbo)
{ // 平行
point = null;
return(IntersectType.NoIntersection);
}
//ここで交点を導出
LDPoint vectorAC = pointC - pointA;
var dR = ((pointD.y() - pointC.y()) * vectorAC.x()
- (pointD.x() - pointC.x()) * vectorAC.y()) / dBunbo;
var dS = ((pointB.y() - pointA.y()) * vectorAC.x()
- (pointB.x() - pointA.x()) * vectorAC.y()) / dBunbo;
point = pointA + dR * (pointB - pointA);
return((new LDRect(pointA, pointB)).contains(point) && (new LDRect(pointC, pointD)).contains(point) ? IntersectType.BoundedIntersection : IntersectType.UnboundedIntersection);
/*
* IntersectType intersect;
* if (MathFunctions.uFuzzyCompare(this.angle(), l.angle()))
* {
* point = null;
* intersect = IntersectType.NoIntersection;
* }
* else
* {
* LDLine lp12 = new LDLine(this.pt1, l.pt1);
* LDLine lp22 = new LDLine(this.pt1, l.pt2);
*
* LDLine lp11 = new LDLine(l.pt1, this.pt1);
* LDLine lp21 = new LDLine(l.pt1, this.pt2);
*
* if (((this.angleTo(lp12) - 180f) * (this.angleTo(lp22) - 180f) < 0)
* && ((this.angleTo(lp11) - 180f) * (this.angleTo(lp21) - 180f) < 0))
* {
* point = null;
* intersect = IntersectType.BoundedIntersection;
* }
* else
* {
* point = null;
* intersect = IntersectType.UnboundedIntersection;
* }
* }
* return intersect;
*/
}
public void setLength(float len)
{
if (this.isNull())
{
return;
}
LDLine v = this.unitVector();
this.pt2 = new LDPoint(this.pt1.x() + v.dx() * len, this.pt1.y() + v.dy() * len);
}
public LDLine unitVector()
{
if (this.length() == 0)
{
return(this);
}
LDLine unit = new LDLine(this);
unit.setP2(new LDPoint(unit.pt1.x() + unit.dx() / this.length(), unit.pt1.y() + unit.dy() / this.length()));
return(unit);
}
public bool isHit(LDPointList form, LDPoint p, float hitRange)
{
LDLine l = this.toLine(form);
LDPoint startPt = l.p1();
LDPoint endPt = l.p2();
//端点から一定の距離内だったら当たり
if (PointUtil.isHit(startPt, p, hitRange))
{
return(true);
}
if (PointUtil.isHit(endPt, p, hitRange))
{
return(true);
}
//点が一直線上にないか確認
if (TriangleUtil.isTriangle(startPt, endPt, p))
{
//鈍角三角形なら判定外
if (TriangleUtil.isObtuseAngle(startPt, endPt, p))
{
return(false);
}
//三角形の面積を算出して、その底面で割れば高さ＝線と点の距離
float distance = TriangleUtil.getTriangleHeight(startPt, endPt, p);
if (distance <= hitRange)
{
return(true);
}
return(false);
}
//一直線上にあるが線分外にあるか判定
LDVector2 ab = new LDVector2(endPt - startPt);
LDVector2 ap = new LDVector2(p - startPt);
LDVector2 bp = new LDVector2(p - endPt);
float omega = 0.0001f;//NOTE:誤差の基準値 かなり適当に指定
if (ap.length() + bp.length() > ab.length() + omega)
{
return(false);
}
return(true);
}
public LDLine(LDLine line)
{
this.pt1 = new LDPoint(line.pt1);
this.pt2 = new LDPoint(line.pt2);
}
public float angleTo(LDLine l)
{
return(l.angle() - this.angle() >= 0 ? l.angle() - this.angle() : l.angle() - this.angle() + 360);
}
public float angleTo(LDLine l)
{
return l.angle() - this.angle() >= 0 ? l.angle() - this.angle() : l.angle() - this.angle() + 360;
}
public LDLine(LDLine line)
{
this.pt1 = new LDPoint(line.pt1);
this.pt2 = new LDPoint(line.pt2);
}
public LDLine unitVector()
{
if (this.length() == 0)
{
return this;
}
LDLine unit = new LDLine(this);
unit.setP2(new LDPoint(unit.pt1.x() + unit.dx() / this.length(), unit.pt1.y() + unit.dy() / this.length()));
return unit;
}
/// <summary>
///
/// </summary>
/// <param name="l"></param>
/// <param name="point"></param>
/// <returns></returns>
public IntersectType intersect(LDLine l, out LDPoint point)
{
LDPoint pointA = this.pt1;
LDPoint pointB = this.pt2;
LDPoint pointC = l.pt1;
LDPoint pointD = l.pt2;
float dBunbo = (pointB.x() - pointA.x())
* (pointD.y() - pointC.y())
- (pointB.y() - pointA.y())
* (pointD.x() - pointC.x());
if (0 == dBunbo)
{ // 平行
point = null;
return IntersectType.NoIntersection;
}
//ここで交点を導出
LDPoint vectorAC = pointC - pointA;
var dR = ((pointD.y() - pointC.y()) * vectorAC.x()
- (pointD.x() - pointC.x()) * vectorAC.y()) / dBunbo;
var dS = ((pointB.y() - pointA.y()) * vectorAC.x()
- (pointB.x() - pointA.x()) * vectorAC.y()) / dBunbo;
point = pointA + dR * (pointB - pointA);
return (new LDRect(pointA, pointB)).contains(point) && (new LDRect(pointC, pointD)).contains(point) ? IntersectType.BoundedIntersection : IntersectType.UnboundedIntersection;
/*
IntersectType intersect;
if (MathFunctions.uFuzzyCompare(this.angle(), l.angle()))
{
point = null;
intersect = IntersectType.NoIntersection;
}
else
{
LDLine lp12 = new LDLine(this.pt1, l.pt1);
LDLine lp22 = new LDLine(this.pt1, l.pt2);
LDLine lp11 = new LDLine(l.pt1, this.pt1);
LDLine lp21 = new LDLine(l.pt1, this.pt2);
if (((this.angleTo(lp12) - 180f) * (this.angleTo(lp22) - 180f) < 0)
&& ((this.angleTo(lp11) - 180f) * (this.angleTo(lp21) - 180f) < 0))
{
point = null;
intersect = IntersectType.BoundedIntersection;
}
else
{
point = null;
intersect = IntersectType.UnboundedIntersection;
}
}
return intersect;
*/
}
/// <summary>
/// out Upoint 未実装
/// </summary>
/// <param name="l"></param>
/// <param name="point"></param>
/// <returns></returns>
public IntersectType intersect(LDLine l, out LDPoint point)
{
IntersectType intersect;
if (MathFunctions.uFuzzyCompare(this.angle(), l.angle()))
{
point = null;
intersect = IntersectType.NoIntersection;
}
else
{
LDLine lp12 = new LDLine(this.pt1, l.pt1);
LDLine lp22 = new LDLine(this.pt1, l.pt2);
LDLine lp11 = new LDLine(l.pt1, this.pt1);
LDLine lp21 = new LDLine(l.pt1, this.pt2);
if (((this.angleTo(lp12) - 180f) * (this.angleTo(lp22) - 180f) < 0)
&& ((this.angleTo(lp11) - 180f) * (this.angleTo(lp21) - 180f) < 0))
{
point = null;
intersect = IntersectType.BoundedIntersection;
}
else
{
point = null;
intersect = IntersectType.UnboundedIntersection;
}
}
return intersect;
}