Class LineUtil

直線に関する便利関数

Inheritance

System.Object

LineUtil

Inherited Members

System.Object.ToString()

System.Object.Equals(System.Object)

System.Object.Equals(System.Object, System.Object)

System.Object.ReferenceEquals(System.Object, System.Object)

System.Object.GetHashCode()

System.Object.GetType()

System.Object.MemberwiseClone()

Namespace: PLATEAU.Util.GeoGraph

Assembly: cs.temp.dll.dll

Syntax

public static class LineUtil

Methods

CheckDistance(LineUtil.Line, Single, in Ray)

線分lineとrayの距離を測る ただし、radius以上離れていたら無効値を返す

Declaration

public static float CheckDistance(LineUtil.Line line, float radius, in Ray ray)

Parameters

Type	Name	Description
LineUtil.Line	line
System.Single	radius
Ray	ray

Returns

Type	Description
System.Single

CheckHit(LineUtil.Line, Single, in Ray, out Vector3, out Vector3)

線分lineとrayの衝突判定を行う radiusで判定に余裕を持たせる また、closestPointは衝突地点ではなく線分上の最も近い点なので注意

Declaration

public static float CheckHit(LineUtil.Line line, float radius, in Ray ray, out Vector3 closestPoint, out Vector3 closestPoint2)

Parameters

Type	Name	Description
LineUtil.Line	line
System.Single	radius
Ray	ray
Vector3	closestPoint
Vector3	closestPoint2

Returns

Type	Description
System.Single

ClosestPoints(LineUtil.Line, LineUtil.Line, out Vector3, out Vector3)

交差しないline0とline1の最短距離を求める ただし、line0,line1は線分ではなく永遠に延びる直線として扱う 交差する場合は動作未定義

Declaration

public static void ClosestPoints(LineUtil.Line line0, LineUtil.Line line1, out Vector3 closestPoint1, out Vector3 closestPoint2)

Parameters

Type	Name	Description
LineUtil.Line	line0
LineUtil.Line	line1
Vector3	closestPoint1
Vector3	closestPoint2

ContainsPoint(in LineUtil.Line, in Vector3)

line上にpointが存在するかどうかを判定する ただし pointはlineの延長線上にあることを前提とする

Declaration

public static bool ContainsPoint(in LineUtil.Line line, in Vector3 point)

Parameters

Type	Name	Description
LineUtil.Line	line
Vector3	point

Returns

Type	Description
System.Boolean

DistanceBetweenLines(in LineUtil.Line, in LineUtil.Line, out Boolean)

2直線の距離を求める

Declaration

public static float DistanceBetweenLines(in LineUtil.Line line1, in LineUtil.Line line2, out bool isParallel)

Parameters

Type	Name	Description
LineUtil.Line	line1
LineUtil.Line	line2
System.Boolean	isParallel

Returns

Type	Description
System.Single

FindClosestPoint(LineUtil.Line, in Ray, out Vector3, out Vector3)

最近棒を求める 直線で計算するので注意

Declaration

public static float FindClosestPoint(LineUtil.Line line, in Ray ray, out Vector3 closestPoint, out Vector3 closestPoint2)

Parameters

Type	Name	Description
LineUtil.Line	line
Ray	ray
Vector3	closestPoint
Vector3	closestPoint2

Returns

Type	Description
System.Single

GetLineSegmentLength(IEnumerable<Vector3>)

verticesで構成された線分の長さを求める

Declaration

public static float GetLineSegmentLength(IEnumerable<Vector3> vertices)

Parameters

Type	Name	Description
IEnumerable<Vector3>	vertices

Returns

Type	Description
System.Single

GetLineSegmentLerpPoint(IReadOnlyList<Vector3>, Single, out Vector3)

verticesを頂点とした連続した線分に対して, 前半と後半の長さがp : (1-p)でとなるをmidPointに入れて返す. 戻り値は midPointを含む線分のインデックスがfloatで返る. 空頂点だと-1が返る

Declaration

public static float GetLineSegmentLerpPoint(IReadOnlyList<Vector3> vertices, float p, out Vector3 midPoint)

Parameters

Type	Name	Description
IReadOnlyList<Vector3>	vertices
System.Single	p
Vector3	midPoint

Returns

Type	Description
System.Single

GetLineSegmentMidPoint(IReadOnlyList<Vector3>, out Vector3)

verticesで表される線分の中央地点を返す. 戻り値はvertices[i] ~ vertices[i+1]に中央地点があるときのi verticesが空の時は-1が返る

Declaration

public static float GetLineSegmentMidPoint(IReadOnlyList<Vector3> vertices, out Vector3 midPoint)

Parameters

Type	Name	Description
IReadOnlyList<Vector3>	vertices
Vector3	midPoint

Returns

Type	Description
System.Single

GetNearestPoint(Ray2D, Vector2)

pからselfへの最も近い点を返す.

Declaration

public static Vector2 GetNearestPoint(this Ray2D self, Vector2 p)

Parameters

Type	Name	Description
Ray2D	self
Vector2	p

Returns

Type	Description
Vector2

GetNearestPoint(Ray2D, Vector2, out Single)

pからselfへの最も近い点を返す. tはreturn = self.origin + self.direction * tとなるt

Declaration

public static Vector2 GetNearestPoint(this Ray2D self, Vector2 p, out float t)

Parameters

Type	Name	Description
Ray2D	self
Vector2	p
System.Single	t

Returns

Type	Description
Vector2

GetNearestPointWithRay(Vector3, Vector3, Vector3)

p0,p1を通る直線に対して,aから最も近い直線状のポイントを返す

Declaration

public static Vector3 GetNearestPointWithRay(Vector3 p0, Vector3 p1, Vector3 a)

Parameters

Type	Name	Description
Vector3	p0
Vector3	p1
Vector3	a

Returns

Type	Description
Vector3

HalfLineSegmentIntersection(Ray2D, Vector2, Vector2, out Vector2, out Single, out Single)

半直線halfLineと線分(p1, p2)の交点を返す. 交わらない場合はfalseが返る

Declaration

public static bool HalfLineSegmentIntersection(Ray2D halfLine, Vector2 p1, Vector2 p2, out Vector2 intersection, out float halfLineOffset, out float t2)

Parameters

Type	Name	Description
Ray2D	halfLine
Vector2	p1	線分を構成する点1
Vector2	p2	線分を構成する点2
Vector2	intersection	交点
System.Single	halfLineOffset	intersection = halfLine.origin + halfLine.direction * halfLineOffsetとなる値
System.Single	t2	intersection = Vector2.Lerp(p1, p2, t2)となる値

Returns

Type	Description
System.Boolean

Intersect(in LineUtil.Line, in LineUtil.Line, out Vector3)

交差するline0とline1の交点を求める 注意点としてline0,line1は線分ではなく永遠に延びる直線として扱う 交差しない場合は動作未定義

Declaration

public static bool Intersect(in LineUtil.Line line0, in LineUtil.Line line1, out Vector3 intersectionPoint)

Parameters

Type	Name	Description
LineUtil.Line	line0
LineUtil.Line	line1
Vector3	intersectionPoint

Returns

Type	Description
System.Boolean

IsMouseDown()

Declaration

public static bool IsMouseDown()

Returns

Type	Description
System.Boolean

IsPointOnLineSegment(LineUtil.Line, Vector3)

ライン上にポイントが存在するかどうかを判定する

Declaration

[Obsolete("動作未検証の関数")]
public static bool IsPointOnLineSegment(LineUtil.Line line, Vector3 p)

Parameters

Type	Name	Description
LineUtil.Line	line
Vector3	p

Returns

Type	Description
System.Boolean

LineIntersection(Ray2D, Ray2D, out Vector2, out Single, out Single)

直線rayAと直線rayBの交点を求める

Declaration

public static bool LineIntersection(Ray2D rayA, Ray2D rayB, out Vector2 intersection, out float rayAOffset, out float rayBOffset)

Parameters

Type	Name	Description
Ray2D	rayA
Ray2D	rayB
Vector2	intersection
System.Single	rayAOffset	intersection = rayA.origin + ray.direction * rayAOffsetとなる値
System.Single	rayBOffset	intersection = rayB.origin + ray.direction * rayBOffsetとなる値

Returns

Type	Description
System.Boolean

LineIntersection(Vector2, Vector2, Vector2, Vector2, out Vector2, out Single, out Single)

a,bを通る直線,c,dを通る直線の交点を求める 平行な場合はfalse 交わる場合 intersectionに交点が入る

Declaration

public static bool LineIntersection(Vector2 a, Vector2 b, Vector2 c, Vector2 d, out Vector2 intersection, out float abT, out float cdT)

Parameters

Type	Name	Description
Vector2	a	直線1の始点
Vector2	b	直線1の終点
Vector2	c	直線2の始点
Vector2	d	直線2の終点
Vector2	intersection	交点が入る
System.Single	abT	intersection = Vector2.LerpUnclamped(a, b, abT)となるabTが入る
System.Single	cdT	intersection = Vector2.LerpUnclamped(c, d, cdT)となるcdTが入る

Returns

Type	Description
System.Boolean

LineSegmentIntersection(Ray2D, Vector2, Vector2, out Vector2, out Single, out Single)

直線lineと線分(p1,p2)の交点を返す 交わらない場合はfalseが返る

Declaration

public static bool LineSegmentIntersection(Ray2D line, Vector2 p1, Vector2 p2, out Vector2 intersection, out float lineOffset, out float segmentT)

Parameters

Type	Name	Description
Ray2D	line
Vector2	p1
Vector2	p2
Vector2	intersection
System.Single	lineOffset	intersection = line.origin + line.direction * lineOffsetとなる値
System.Single	segmentT	intersection = Vector2.LerpUnClamped(p1, p2, segmentT)となる値

Returns

Type	Description
System.Boolean

SegmentIntersection(Vector2, Vector2, Vector2, Vector2, out Vector2, out Single, out Single)

線分h(s1St, s1En)と線分(s2St, s2En)の交点を返す. 交わらない場合はfalseが返る

Declaration

public static bool SegmentIntersection(Vector2 s1St, Vector2 s1En, Vector2 s2St, Vector2 s2En, out Vector2 intersection, out float t1, out float t2)

Parameters

Type	Name	Description
Vector2	s1St	線分1を構成する点1
Vector2	s1En	線分1を構成する点2
Vector2	s2St	線分2を構成する点1
Vector2	s2En	線分2を構成する点2
Vector2	intersection
System.Single	t1	intersection = Vector2.Lerp(s1St, s1En, t1)となるt1が入る
System.Single	t2	intersection = Vector2.Lerp(s2St, s2En, t2)となるt2が入る

Returns

Type	Description
System.Boolean

SplitLineSegments(IReadOnlyList<Vector3>, Int32)

verticesで表される線分をsplitNumで等分する

Declaration

public static List<List<Vector3>> SplitLineSegments(IReadOnlyList<Vector3> vertices, int num)

Parameters

Type	Name	Description
IReadOnlyList<Vector3>	vertices
System.Int32	num

Returns

Type	Description
List<List<Vector3>>