A collection of collision helper functions. More...

Static Public Member Functions
static Boolean	BoxIntersectsBox (FPVector2 aCenter, FPVector2 aExtents, FP aRotation, FPVector2 bCenter, FPVector2 bExtents, FP bRotation)
	Box-Box (2D) intersection test. More...

static Boolean	CircleContainsPoint (FPVector2 center, FP radius, FPVector2 point)
	Checks if point is inside a circle, including its circumference. Works for CW and CWW. More...

static Boolean	CircleIntersectsAABB (FPVector2 center, FP radius, FPVector2 min, FPVector2 max)
	Circle-AABB intersection test. More...

static Boolean	CircleIntersectsCircle (FPVector2 a_origin, FP a_radius, FPVector2 b_origin, FP b_radius)
	Circle-circle intersection test. More...

static Boolean	CircleIntersectsPolygon (FPVector2 circleCenter, FP circleRadius, FPVector2 polygonPosition, FP polygonRotation, FPVector2[] polygonVertices, FPVector2[] polygonNormals)
	Circle-polygon intersection test. More...

static Boolean	CircleIntersectsPolygon (FPVector2 circleCenter, FP circleRadius, FPVector2 polygonPosition, FP polygonRotationSinInverse, FP polygonRotationCosInverse, FPVector2[] polygonVertices, FPVector2[] polygonNormals)
	Circle-polygon intersection test. More...

static Boolean	CircleIntersectsTriangle (FPVector2 center, FP radius, FPVector2 v1, FPVector2 v2, FPVector2 v3)
	Circle-triangle intersection test. More...

static bool	ClampPointToAABB (FPVector2 point, FPVector2 boxExtents, out FPVector2 clampedPoint)
	Clamps a 2D point to an axis-aligned bounding box (AABB). More...

static bool	ClampPointToLocalAABB (FPVector3 point, FPVector3 aabbExtents, out FPVector3 clampedPoint)
	Checks if a point is inside the extents of an AABB centered at the origin (local space) and clamp it otherwise. More...

static FP	ClosestDistanceToTriangle (FPVector3 p, FPVector3 a, FPVector3 b, FPVector3 c, out FPVector3 closestPoint, out FPVector3 barycentricCoordinates)
	Uses barycentric coordinates to calculate the closest point on a triangle. In conjunction with Fixed Point math this can get quite inaccurate when the triangle become large (more than 100 units) or tiny (less then 0.01 units). More...

static FPVector2	ClosestPointBetweenSegments (FPVector2 segment1Start, FPVector2 segment1End, FPVector2 segment2Start, FPVector2 segment2End)
	Computes the closes point in segment A to a segment B. More...

static FPVector3	ClosestPointBetweenSegments (FPVector3 segmentStartA, FPVector3 segmentEndA, FPVector3 segmentStartB, FPVector3 segmentEndB)
	Computes the closes point in segment A to a segment B. More...

static FPVector3	ClosestPointInSegment (FPVector3 point, FPVector3 a, FPVector3 b)
	Calculates the closest point on the line segment defined by two given points to a given point. More...

static FPVector2	ClosestPointOnCicle (FPVector2 center, FP radius, FPVector2 pt)
	Casts a point pt on a circle. More...

static FPVector2	ClosestPointOnSegment (FPVector2 point, FPVector2 p1, FPVector2 p2)
	Cast point point on a line crossing p1 and p2 . The result is clamped to lie on a segment defined by p1 and p2 . More...

static FPVector3	ClosestPointOnSegment (FPVector3 point, FPVector3 p1, FPVector3 p2)
	Returns the closest point on a segment to a given point. More...

static FPVector2	ClosestPointOnTriangle (FPVector2 pt, FPVector2 t0, FPVector2 t1, FPVector2 t2)
	Casts a point pt on a triangle defined by three vertices. More...

static Boolean	InsideAABB (FPVector2 point, FPVector2 extents, out FP penetration)
	Returns `true` if point is inside centered AABB. More...

static bool	IsPointOnLine (FPVector2 p1, FPVector2 p2, FPVector2 point)
	Returns `true` if a point point lies on a line crossing p1 and p2 . More...

static Int32	LineIntersectsAABB (FPVector2 p1, FPVector2 p2, FPVector2 aabbCenter, FPVector2 aabbExtents, out FPVector2 i1, out FPVector2 i2, out FP penetration)
	Line segment-AABB intersection test in world space with computation of intersection points and penetration. More...

static Int32	LineIntersectsAABB (FPVector2 p1, FPVector2 p2, FPVector2 aabbExtents, out FPVector2 i1, out FPVector2 i2, out FP penetration)
	Line segment-AABB intersection test in the LOCAL space of the AABB with computation of intersection points and penetration. More...

static Boolean	LineIntersectsAABB2 (FPVector2 p1, FPVector2 p2, FPVector2 normal, FPVector2 aabbCenter, FPVector2 aabbExtents, out FPVector2 i1, out FPVector2 i2, out FP penetration)
	Line segment-AABB intersection test in world space with computation of intersection points, normal and penetration. If an intersection is detected, the test always returns two intersection points, which can be either intersections between the line segment and an edge of the AABB or a segment point itself, if inside the AABB. More...

static Boolean	LineIntersectsAABB2 (FPVector2 p1, FPVector2 p2, FPVector2 normal, FPVector2 aabbExtents, out FPVector2 i1, out FPVector2 i2, out FP penetration)
	Line segment-AABB intersection test in the LOCAL space of the AABB with computation of intersection points, normal and penetration. If an intersection is detected, the test always returns two intersection points, which can be either intersections between the line segment and an edge of the AABB or a segment point itself, if inside the AABB. More...

static Boolean	LineIntersectsAABB_SAT (FPVector2 p1, FPVector2 p2, FPVector2 aabbCenter, FPVector2 aabbExtents)
	Line segment-AABB intersection test. More...

static Boolean	LineIntersectsAABB_SAT (FPVector2 p1, FPVector2 p2, FPVector2 aabbExtents)
	Line segment-AABB intersection test in the LOCAL space of the AABB. More...

static Boolean	LineIntersectsCircle (FPVector2 p1, FPVector2 p2, FPVector2 position, FP radius, bool ignoreIfStartPointInside=false)
	Line segment-circle intersection test. More...

static Boolean	LineIntersectsCircle (FPVector2 p1, FPVector2 p2, FPVector2 position, FP radius, out FPVector2 point, bool ignoreIfStartPointInside=false)
	Line segment-circle intersection test. More...

static Boolean	LineIntersectsCircle (FPVector2 p1, FPVector2 p2, FPVector2 position, FP radius, out FPVector2 point, out FP normalizedDist, bool ignoreIfStartPointInside=false)
	Line segment-circle intersection test. More...

static Boolean	LineIntersectsCircleManifold (FPVector2 p1, FPVector2 p2, FPVector2 position, FP radius, out FPVector2 point)
	Line segment-circle intersection test. More...

static bool	LineIntersectsLine (FPVector2 p1, FPVector2 p2, FPVector2 q1, FPVector2 q2)
	Line segment-line segment intersection test. More...

static bool	LineIntersectsLine (FPVector2 p1, FPVector2 p2, FPVector2 q1, FPVector2 q2, out FPVector2 point)
	Line segment-line segment intersection test. More...

static bool	LineIntersectsLine (FPVector2 p1, FPVector2 p2, FPVector2 q1, FPVector2 q2, out FPVector2 point, out FP distance)
	Line segment-line segment intersection test. More...

static bool	LineIntersectsLine (FPVector2 p1, FPVector2 p2, FPVector2 q1, FPVector2 q2, out FPVector2 point, out FP distance, out FP normalizedDist)
	Determines if two lines intersect. More...

static void	LineIntersectsLineAlwaysHit (FPVector2 p1, FPVector2 p2, FPVector2 q1, FPVector2 q2, out FPVector2 point)
	Line segment-line segment intersection test. Assumes lines are not colinear nor parallel. More...

static FPVector2	TriangleCenter (FPVector2 v0, FPVector2 v1, FPVector2 v2)
	Returns the center of a triangle defined by three vertices. More...

static Boolean	TriangleContainsPointExclusive (FPVector2 pt, FPVector2 v0, FPVector2 v1, FPVector2 v2)
	Checks if pt is inside a triangle, excluding vertices and edges. Works for CW and CWW. More...

static Boolean	TriangleContainsPointExclusive (FPVector3 pt, FPVector3 v0, FPVector3 v1, FPVector3 v2)
	Checks if pt is inside a triangle, excluding vertices and edges. This only checks the XZ component like the triangle is in 2D! Works for CW and CWW. More...

static Boolean	TriangleContainsPointInclusive (FPVector2 pt, FPVector2 v0, FPVector2 v1, FPVector2 v2)
	Checks if pt is inside a triangle, including edges and vertices. Works for CW and CWW. More...

static Boolean	TriangleContainsPointInclusive (FPVector3 pt, FPVector3 v0, FPVector3 v1, FPVector3 v2)
	Checks if pt is inside a triangle, including edges and vertices. This only checks the XZ component like the triangle is in 2D! Works for CW and CWW. More...

Detailed Description

A collection of collision helper functions.

Member Function Documentation

◆ TriangleCenter()

static FPVector2 Photon.Deterministic.FPCollision.TriangleCenter	(	FPVector2	v0,
		FPVector2	v1,
		FPVector2	v2
	)

inlinestatic

Returns the center of a triangle defined by three vertices.

Parameters

v0
v1
v2

Returns

◆ IsPointOnLine()

static bool Photon.Deterministic.FPCollision.IsPointOnLine	(	FPVector2	p1,
		FPVector2	p2,
		FPVector2	point
	)

inlinestatic

Returns true if a point point lies on a line crossing p1 and p2 .

Parameters

p1
p2
point

Returns

◆ ClosestPointOnSegment() [1/2]

static FPVector3 Photon.Deterministic.FPCollision.ClosestPointOnSegment	(	FPVector3	point,
		FPVector3	p1,
		FPVector3	p2
	)

inlinestatic

Returns the closest point on a segment to a given point.

Parameters

point	The point to find the closest point on the segment to.
p1	The start point of the segment.
p2	The end point of the segment.

Returns: The closest point on the segment to the given point.

◆ ClosestPointOnSegment() [2/2]

static FPVector2 Photon.Deterministic.FPCollision.ClosestPointOnSegment	(	FPVector2	point,
		FPVector2	p1,
		FPVector2	p2
	)

inlinestatic

Cast point point on a line crossing p1 and p2 . The result is clamped to lie on a segment defined by p1 and p2 .

Parameters

point
p1
p2

Returns

◆ ClampPointToAABB()

static bool Photon.Deterministic.FPCollision.ClampPointToAABB	(	FPVector2	point,
		FPVector2	boxExtents,
		out FPVector2	clampedPoint
	)

inlinestatic

Clamps a 2D point to an axis-aligned bounding box (AABB).

Parameters

point	The point to clamp.
boxExtents	The half extents of the AABB. The AABB is centered at the origin.
clampedPoint	The clamped point will be stored in this output parameter.

Returns: Returns true if the original point is inside the AABB, or false if it is outside. The clamped point will always be inside the AABB.

◆ ClosestPointBetweenSegments() [1/2]

static FPVector2 Photon.Deterministic.FPCollision.ClosestPointBetweenSegments	(	FPVector2	segment1Start,
		FPVector2	segment1End,
		FPVector2	segment2Start,
		FPVector2	segment2End
	)

inlinestatic

Computes the closes point in segment A to a segment B.

Parameters

segment1Start	Start point of segment A.
segment1End	End point of segment A.
segment2Start	Start point of segment A.
segment2End	End point of segment B.

Returns

◆ ClosestPointOnTriangle()

static FPVector2 Photon.Deterministic.FPCollision.ClosestPointOnTriangle	(	FPVector2	pt,
		FPVector2	t0,
		FPVector2	t1,
		FPVector2	t2
	)

inlinestatic

Casts a point pt on a triangle defined by three vertices.

Parameters

pt
t0
t1
t2

Returns

◆ ClosestPointOnCicle()

static FPVector2 Photon.Deterministic.FPCollision.ClosestPointOnCicle	(	FPVector2	center,
		FP	radius,
		FPVector2	pt
	)

inlinestatic

Casts a point pt on a circle.

Parameters

center
radius
pt

Returns

◆ TriangleContainsPointExclusive() [1/2]

static Boolean Photon.Deterministic.FPCollision.TriangleContainsPointExclusive	(	FPVector2	pt,
		FPVector2	v0,
		FPVector2	v1,
		FPVector2	v2
	)

inlinestatic

Checks if pt is inside a triangle, excluding vertices and edges. Works for CW and CWW.

Parameters

pt	Point to check
v0	vertex position 0
v1	vertex position 1
v2	vertex position 2

Returns: true if pt is inside the triangle. false if point is outside or if the point is located on an edge or vertex.

◆ TriangleContainsPointExclusive() [2/2]

static Boolean Photon.Deterministic.FPCollision.TriangleContainsPointExclusive	(	FPVector3	pt,
		FPVector3	v0,
		FPVector3	v1,
		FPVector3	v2
	)

inlinestatic

Checks if pt is inside a triangle, excluding vertices and edges. This only checks the XZ component like the triangle is in 2D! Works for CW and CWW.

Parameters

pt	Point to check
v0	vertex position 0
v1	vertex position 1
v2	vertex position 2

Returns: true if pt is inside the triangle. false if point is outside or if the point is located on an edge or vertex.

◆ TriangleContainsPointInclusive() [1/2]

static Boolean Photon.Deterministic.FPCollision.TriangleContainsPointInclusive	(	FPVector2	pt,
		FPVector2	v0,
		FPVector2	v1,
		FPVector2	v2
	)

inlinestatic

Checks if pt is inside a triangle, including edges and vertices. Works for CW and CWW.

Parameters

pt	Point to check
v0	vertex position 0
v1	vertex position 1
v2	vertex position 2

Returns: true if pt is inside the triangle or is located on an edge or vertex.

◆ TriangleContainsPointInclusive() [2/2]

static Boolean Photon.Deterministic.FPCollision.TriangleContainsPointInclusive	(	FPVector3	pt,
		FPVector3	v0,
		FPVector3	v1,
		FPVector3	v2
	)

inlinestatic

Checks if pt is inside a triangle, including edges and vertices. This only checks the XZ component like the triangle is in 2D! Works for CW and CWW.

Parameters

pt	Point to check
v0	vertex position 0
v1	vertex position 1
v2	vertex position 2

Returns: true if pt is inside the triangle or is located on an edge or vertex.

◆ CircleContainsPoint()

static Boolean Photon.Deterministic.FPCollision.CircleContainsPoint	(	FPVector2	center,
		FP	radius,
		FPVector2	point
	)

inlinestatic

Checks if point is inside a circle, including its circumference. Works for CW and CWW.

Parameters

center
radius
point

Returns: true in point point is inside the circle.

◆ CircleIntersectsCircle()

static Boolean Photon.Deterministic.FPCollision.CircleIntersectsCircle	(	FPVector2	a_origin,
		FP	a_radius,
		FPVector2	b_origin,
		FP	b_radius
	)

inlinestatic

Circle-circle intersection test.

Parameters

a_origin
a_radius
b_origin
b_radius

Returns

◆ CircleIntersectsAABB()

static Boolean Photon.Deterministic.FPCollision.CircleIntersectsAABB	(	FPVector2	center,
		FP	radius,
		FPVector2	min,
		FPVector2	max
	)

inlinestatic

Circle-AABB intersection test.

Parameters

center
radius
min
max

Returns

◆ CircleIntersectsTriangle()

static Boolean Photon.Deterministic.FPCollision.CircleIntersectsTriangle	(	FPVector2	center,
		FP	radius,
		FPVector2	v1,
		FPVector2	v2,
		FPVector2	v3
	)

inlinestatic

Circle-triangle intersection test.

Parameters

center
radius
v1
v2
v3

Returns

◆ LineIntersectsAABB_SAT() [1/2]

static Boolean Photon.Deterministic.FPCollision.LineIntersectsAABB_SAT	(	FPVector2	p1,
		FPVector2	p2,
		FPVector2	aabbCenter,
		FPVector2	aabbExtents
	)

inlinestatic

Line segment-AABB intersection test.

Parameters

p1	First point that defines the line segment in world space.
p2	Second point that defines the line segment in world space.
aabbCenter	The center of the AABB in world space.
aabbExtents	The distance between the AABB center and the max X and Y values in world space.

Returns: true if the line segment intersects the AABB and false otherwise.

◆ LineIntersectsAABB_SAT() [2/2]

static Boolean Photon.Deterministic.FPCollision.LineIntersectsAABB_SAT	(	FPVector2	p1,
		FPVector2	p2,
		FPVector2	aabbExtents
	)

inlinestatic

Line segment-AABB intersection test in the LOCAL space of the AABB.

Parameters

p1	First point that defines the line segment, relative to the AABB center.
p2	Second point that defines the line segment, relative to the AABB center.
aabbExtents	The distance between the AABB center and the max X and Y values.

Returns: true if the line segment intersects the AABB and false otherwise.

◆ LineIntersectsAABB2() [1/2]

static Boolean Photon.Deterministic.FPCollision.LineIntersectsAABB2	(	FPVector2	p1,
		FPVector2	p2,
		FPVector2	normal,
		FPVector2	aabbCenter,
		FPVector2	aabbExtents,
		out FPVector2	i1,
		out FPVector2	i2,
		out FP	penetration
	)

inlinestatic

Line segment-AABB intersection test in world space with computation of intersection points, normal and penetration. If an intersection is detected, the test always returns two intersection points, which can be either intersections between the line segment and an edge of the AABB or a segment point itself, if inside the AABB.

Parameters

p1	First point that defines the line segment in world space.
p2	Second point that defines the line segment in world space.
normal	Normal along which the line segment penetration will be computed.
aabbCenter	The center of the AABB in world space.
aabbExtents	The distance between the AABB center and the max X and Y values in world space.
i1	First intersection point.
i2	Second intersection point.
penetration	The penetration of the line segment along the normal .

Returns: true if the line segment intersects the AABB and false otherwise.

◆ LineIntersectsAABB2() [2/2]

static Boolean Photon.Deterministic.FPCollision.LineIntersectsAABB2	(	FPVector2	p1,
		FPVector2	p2,
		FPVector2	normal,
		FPVector2	aabbExtents,
		out FPVector2	i1,
		out FPVector2	i2,
		out FP	penetration
	)

inlinestatic

Line segment-AABB intersection test in the LOCAL space of the AABB with computation of intersection points, normal and penetration. If an intersection is detected, the test always returns two intersection points, which can be either intersections between the line segment and an edge of the AABB or a segment point itself, if inside the AABB.

Parameters

p1	First point that defines the line segment, relative to the AABB center.
p2	Second point that defines the line segment, relative to the AABB center.
normal	Normal along which the line segment penetration will be computed.
aabbExtents	The distance between the AABB center and the max X and Y values in world space.
i1	First intersection point, relative to the AABB center.
i2	Second intersection point, relative to the AABB center.
penetration	The penetration of the line segment along the normal .

Returns: true if the line segment intersects the AABB and false otherwise.

◆ LineIntersectsAABB() [1/2]

static Int32 Photon.Deterministic.FPCollision.LineIntersectsAABB	(	FPVector2	p1,
		FPVector2	p2,
		FPVector2	aabbCenter,
		FPVector2	aabbExtents,
		out FPVector2	i1,
		out FPVector2	i2,
		out FP	penetration
	)

inlinestatic

Line segment-AABB intersection test in world space with computation of intersection points and penetration.

Parameters

p1	First point that defines the line segment in world space.
p2	Second point that defines the line segment in world space.
aabbCenter	The center of the AABB in world space.
aabbExtents	The distance between the AABB center and the max X and Y values in world space.
i1	First intersection point in world space.
i2	Second intersection point in world space.
penetration	The penetration of the line segment along the closest AABB normal.

Returns: The number of intersections found between the line segment and the AABB edges. If less than 2, the respective intersection point will be default.

◆ LineIntersectsAABB() [2/2]

static Int32 Photon.Deterministic.FPCollision.LineIntersectsAABB	(	FPVector2	p1,
		FPVector2	p2,
		FPVector2	aabbExtents,
		out FPVector2	i1,
		out FPVector2	i2,
		out FP	penetration
	)

inlinestatic

Line segment-AABB intersection test in the LOCAL space of the AABB with computation of intersection points and penetration.

Parameters

p1	First point that defines the line segment, relative to the AABB center.
p2	Second point that defines the line segment, relative to the AABB center.
aabbExtents	The distance between the AABB center and the max X and Y values in world space.
i1	First intersection point, relative to the AABB center.
i2	Second intersection point, relative to the AABB center.
penetration	The penetration of the line segment along the closest AABB normal.

Returns: The number of intersections found between the line segment and the AABB edges. If less than 2, the respective intersection point will be default.

◆ LineIntersectsLine() [1/4]

static bool Photon.Deterministic.FPCollision.LineIntersectsLine	(	FPVector2	p1,
		FPVector2	p2,
		FPVector2	q1,
		FPVector2	q2
	)

inlinestatic

Line segment-line segment intersection test.

Parameters

p1
p2
q1
q2

Returns

◆ LineIntersectsLine() [2/4]

static bool Photon.Deterministic.FPCollision.LineIntersectsLine	(	FPVector2	p1,
		FPVector2	p2,
		FPVector2	q1,
		FPVector2	q2,
		out FPVector2	point,
		out FP	distance
	)

inlinestatic

Line segment-line segment intersection test.

Parameters

p1
p2
q1
q2
point	Point of collision
distance	Distance along p segment where the collision happens

Returns

◆ LineIntersectsLine() [3/4]

static bool Photon.Deterministic.FPCollision.LineIntersectsLine	(	FPVector2	p1,
		FPVector2	p2,
		FPVector2	q1,
		FPVector2	q2,
		out FPVector2	point,
		out FP	distance,
		out FP	normalizedDist
	)

inlinestatic

Determines if two lines intersect.

Parameters

p1	The starting point of the first line.
p2	The ending point of the first line.
q1	The starting point of the second line.
q2	The ending point of the second line.
point	The intersection point, if the lines intersect.
distance	The distance between the intersection point and point p1, if the lines intersect.
normalizedDist	The normalized distance between the intersection point and point p1, if the lines intersect.

Returns: true if the lines intersect, false otherwise.

◆ LineIntersectsLine() [4/4]

static bool Photon.Deterministic.FPCollision.LineIntersectsLine	(	FPVector2	p1,
		FPVector2	p2,
		FPVector2	q1,
		FPVector2	q2,
		out FPVector2	point
	)

inlinestatic

Line segment-line segment intersection test.

Parameters

p1
p2
q1
q2
point	Point of collision

Returns

◆ LineIntersectsLineAlwaysHit()

static void Photon.Deterministic.FPCollision.LineIntersectsLineAlwaysHit	(	FPVector2	p1,
		FPVector2	p2,
		FPVector2	q1,
		FPVector2	q2,
		out FPVector2	point
	)

inlinestatic

Line segment-line segment intersection test. Assumes lines are not colinear nor parallel.

Parameters

p1
p2
q1
q2
point

◆ InsideAABB()

static Boolean Photon.Deterministic.FPCollision.InsideAABB	(	FPVector2	point,
		FPVector2	extents,
		out FP	penetration
	)

inlinestatic

Returns true if point is inside centered AABB.

Parameters

point
extents
penetration

Returns

◆ LineIntersectsCircleManifold()

static Boolean Photon.Deterministic.FPCollision.LineIntersectsCircleManifold	(	FPVector2	p1,
		FPVector2	p2,
		FPVector2	position,
		FP	radius,
		out FPVector2	point
	)

inlinestatic

Line segment-circle intersection test.

Parameters

p1
p2
position
radius
point

Returns

◆ LineIntersectsCircle() [1/3]

static Boolean Photon.Deterministic.FPCollision.LineIntersectsCircle	(	FPVector2	p1,
		FPVector2	p2,
		FPVector2	position,
		FP	radius,
		bool	ignoreIfStartPointInside = `false`
	)

inlinestatic

Line segment-circle intersection test.

Parameters

p1	Start point of the line segment.
p2	End point of the line segment.
position	Position of the center of the circle in world space.
radius	Radius of the circle.
ignoreIfStartPointInside	If the intersection should be ignored if the start point of the line segment (p1 ) is inside the circle.

Returns: true if an intersection is detected. false otherwise.

◆ LineIntersectsCircle() [2/3]

static Boolean Photon.Deterministic.FPCollision.LineIntersectsCircle	(	FPVector2	p1,
		FPVector2	p2,
		FPVector2	position,
		FP	radius,
		out FPVector2	point,
		bool	ignoreIfStartPointInside = `false`
	)

inlinestatic

Line segment-circle intersection test.

Parameters

p1	Start point of the line segment.
p2	End point of the line segment.
position	Position of the center of the circle in world space.
radius	Radius of the circle.
point	Intersection point, if intersecting. Default otherwise.
ignoreIfStartPointInside	If the intersection should be ignored if the start point of the line segment (p1 ) is inside the circle.

Returns: true if an intersection is detected. false otherwise.

◆ LineIntersectsCircle() [3/3]

static Boolean Photon.Deterministic.FPCollision.LineIntersectsCircle	(	FPVector2	p1,
		FPVector2	p2,
		FPVector2	position,
		FP	radius,
		out FPVector2	point,
		out FP	normalizedDist,
		bool	ignoreIfStartPointInside = `false`
	)

inlinestatic

Line segment-circle intersection test.

Parameters

p1	Start point of the line segment.
p2	End point of the line segment.
position	Position of the center of the circle in world space.
radius	Radius of the circle.
point	Intersection point, if intersecting. Default otherwise.
normalizedDist	Normalize distance from p1 to p2 of the intersection point, if intersecting. Default otherwise.
ignoreIfStartPointInside	If the intersection should be ignored if the start point of the line segment (p1 ) is inside the circle.

Returns: true if an intersection is detected. false otherwise.

◆ CircleIntersectsPolygon() [1/2]

static Boolean Photon.Deterministic.FPCollision.CircleIntersectsPolygon	(	FPVector2	circleCenter,
		FP	circleRadius,
		FPVector2	polygonPosition,
		FP	polygonRotationSinInverse,
		FP	polygonRotationCosInverse,
		FPVector2[]	polygonVertices,
		FPVector2[]	polygonNormals
	)

inlinestatic

Circle-polygon intersection test.

Parameters

circleCenter
circleRadius
polygonPosition
polygonRotationSinInverse
polygonRotationCosInverse
polygonVertices
polygonNormals

Returns

◆ CircleIntersectsPolygon() [2/2]

static Boolean Photon.Deterministic.FPCollision.CircleIntersectsPolygon	(	FPVector2	circleCenter,
		FP	circleRadius,
		FPVector2	polygonPosition,
		FP	polygonRotation,
		FPVector2[]	polygonVertices,
		FPVector2[]	polygonNormals
	)

inlinestatic

Circle-polygon intersection test.

Parameters

circleCenter
circleRadius
polygonPosition
polygonRotation
polygonVertices
polygonNormals

Returns

◆ BoxIntersectsBox()

static Boolean Photon.Deterministic.FPCollision.BoxIntersectsBox	(	FPVector2	aCenter,
		FPVector2	aExtents,
		FP	aRotation,
		FPVector2	bCenter,
		FPVector2	bExtents,
		FP	bRotation
	)

inlinestatic

Box-Box (2D) intersection test.

Parameters

aCenter
aExtents
aRotation
bCenter
bExtents
bRotation

Returns

◆ ClosestDistanceToTriangle()

static FP Photon.Deterministic.FPCollision.ClosestDistanceToTriangle	(	FPVector3	p,
		FPVector3	a,
		FPVector3	b,
		FPVector3	c,
		out FPVector3	closestPoint,
		out FPVector3	barycentricCoordinates
	)

inlinestatic

Uses barycentric coordinates to calculate the closest point on a triangle. In conjunction with Fixed Point math this can get quite inaccurate when the triangle become large (more than 100 units) or tiny (less then 0.01 units).

Parameters

p	Point
a	Vertex 0
b	Vertex 1
c	Vertex 2
closestPoint	Resulting point on the triangle
barycentricCoordinates	Barycentric coordinates of the point inside the triangle.

Returns: Squared distance to point on the triangle.

◆ ClampPointToLocalAABB()

static bool Photon.Deterministic.FPCollision.ClampPointToLocalAABB	(	FPVector3	point,
		FPVector3	aabbExtents,
		out FPVector3	clampedPoint
	)

inlinestatic

Checks if a point is inside the extents of an AABB centered at the origin (local space) and clamp it otherwise.

Parameters

point	Point in the local space of the AABB.
aabbExtents	Extents of the AABB.
clampedPoint	Clamped point inside the AABB. Equals to point if it is already inside the AABB.

Returns: true if the point is already inside the AABB.

◆ ClosestPointInSegment()

static FPVector3 Photon.Deterministic.FPCollision.ClosestPointInSegment	(	FPVector3	point,
		FPVector3	a,
		FPVector3	b
	)

inlinestatic

Calculates the closest point on the line segment defined by two given points to a given point.

Parameters

point	The point to which the closest point on the segment is calculated.
a	The first point of the line segment.
b	The second point of the line segment.

Returns: The closest point on the line segment to the given point.

◆ ClosestPointBetweenSegments() [2/2]

static FPVector3 Photon.Deterministic.FPCollision.ClosestPointBetweenSegments	(	FPVector3	segmentStartA,
		FPVector3	segmentEndA,
		FPVector3	segmentStartB,
		FPVector3	segmentEndB
	)

inlinestatic

Computes the closes point in segment A to a segment B.

Parameters

segmentStartA	Start point of segment A.
segmentEndA	End point of segment A.
segmentStartB	Start point of segment A.
segmentEndB	End point of segment B.

Returns

Photon Quantum 3.0.0

Static Public Member Functions

Detailed Description

Member Function Documentation

◆ TriangleCenter()

◆ IsPointOnLine()

◆ ClosestPointOnSegment() [1/2]

◆ ClosestPointOnSegment() [2/2]

◆ ClampPointToAABB()

◆ ClosestPointBetweenSegments() [1/2]

◆ ClosestPointOnTriangle()

◆ ClosestPointOnCicle()

◆ TriangleContainsPointExclusive() [1/2]

◆ TriangleContainsPointExclusive() [2/2]

◆ TriangleContainsPointInclusive() [1/2]

◆ TriangleContainsPointInclusive() [2/2]

◆ CircleContainsPoint()

◆ CircleIntersectsCircle()

◆ CircleIntersectsAABB()

◆ CircleIntersectsTriangle()

◆ LineIntersectsAABB_SAT() [1/2]

◆ LineIntersectsAABB_SAT() [2/2]

◆ LineIntersectsAABB2() [1/2]

◆ LineIntersectsAABB2() [2/2]

◆ LineIntersectsAABB() [1/2]

◆ LineIntersectsAABB() [2/2]

◆ LineIntersectsLine() [1/4]

◆ LineIntersectsLine() [2/4]

◆ LineIntersectsLine() [3/4]

◆ LineIntersectsLine() [4/4]

◆ LineIntersectsLineAlwaysHit()

◆ InsideAABB()

◆ LineIntersectsCircleManifold()

◆ LineIntersectsCircle() [1/3]

◆ LineIntersectsCircle() [2/3]

◆ LineIntersectsCircle() [3/3]

◆ CircleIntersectsPolygon() [1/2]

◆ CircleIntersectsPolygon() [2/2]

◆ BoxIntersectsBox()

◆ ClosestDistanceToTriangle()

◆ ClampPointToLocalAABB()

◆ ClosestPointInSegment()

◆ ClosestPointBetweenSegments() [2/2]