collision

package
v0.0.0-...-e7bc4dc Latest Latest
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 Go to latest Published: Dec 26, 2015 License: MIT Imports: 3 Imported by: 0

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Constants

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Variables

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Functions

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Types

type BoundingBox 

type BoundingBox struct {
	Min, Max, Cnt, Dim *Vector3
}

Encapsulates an axis aligned bounding box represented by a minimum and a maximum Vector. Additionally you can query for the bounding box's center, dimensions and corner points.

func NewBoundingBox 

func NewBoundingBox() *BoundingBox

Constructs a new bounding box with the minimum and maximum vector set to zeros.

func NewBoundingBoxCopy 

func NewBoundingBoxCopy(bounds *BoundingBox) *BoundingBox

Constructs a new bounding box from the given bounding box. param bounds The bounding box to copy

func NewBoundingBoxVector3 

func NewBoundingBoxVector3(minimum, maximum *Vector3) *BoundingBox

Constructs the new bounding box using the given minimum and maximum vector. param minimum The minimum vector param maximum The maximum vector

func (*BoundingBox) Clr 

func (self *BoundingBox) Clr() *BoundingBox

Sets the minimum and maximum vector to zeros. return This bounding box for chaining.

func (*BoundingBox) Contains 

func (self *BoundingBox) Contains(b *BoundingBox) bool

Returns whether the given bounding box is contained in this bounding box. param b The bounding box return Whether the given bounding box is contained

func (*BoundingBox) ContainsV3 

func (self *BoundingBox) ContainsV3(v *Vector3) bool

Returns whether the given vector is contained in this bounding box. param v The vector return Whether the vector is contained or not.

func (*BoundingBox) Ext 

func (self *BoundingBox) Ext(x, y, z float32) *BoundingBox

Extends the bounding box by the given vector. param x The x-coordinate param y The y-coordinate param z The z-coordinate return This bounding box for chaining.

func (*BoundingBox) ExtB 

func (self *BoundingBox) ExtB(bounds *BoundingBox) *BoundingBox

Extends this bounding box by the given bounding box. param bounds The bounding box return This bounding box for chaining.

func (*BoundingBox) ExtBT 

func (self *BoundingBox) ExtBT(bounds *BoundingBox, transform *Matrix4) *BoundingBox

Extends this bounding box by the given transformed bounding box. param bounds The bounding box param transform The transformation matrix to apply to bounds, before using it to extend this bounding box. return This bounding box for chaining.

func (*BoundingBox) ExtV3 

func (self *BoundingBox) ExtV3(point *Vector3) *BoundingBox

Extends the bounding box to incorporate the given {@link Vector3}. param point The vector return This bounding box for chaining.

func (*BoundingBox) GetCenter 

func (self *BoundingBox) GetCenter(out *Vector3) *Vector3

@param out The {@link Vector3} to receive the center of the bounding box. return The vector specified with the out argument.

func (*BoundingBox) GetCenterX 

func (self *BoundingBox) GetCenterX() float32

func (*BoundingBox) GetCenterY 

func (self *BoundingBox) GetCenterY() float32

func (*BoundingBox) GetCenterZ 

func (self *BoundingBox) GetCenterZ() float32

func (*BoundingBox) GetCorner000 

func (self *BoundingBox) GetCorner000(out *Vector3) *Vector3

func (*BoundingBox) GetCorner001 

func (self *BoundingBox) GetCorner001(out *Vector3) *Vector3

func (*BoundingBox) GetCorner010 

func (self *BoundingBox) GetCorner010(out *Vector3) *Vector3

func (*BoundingBox) GetCorner011 

func (self *BoundingBox) GetCorner011(out *Vector3) *Vector3

func (*BoundingBox) GetCorner100 

func (self *BoundingBox) GetCorner100(out *Vector3) *Vector3

func (*BoundingBox) GetCorner101 

func (self *BoundingBox) GetCorner101(out *Vector3) *Vector3

func (*BoundingBox) GetCorner110 

func (self *BoundingBox) GetCorner110(out *Vector3) *Vector3

func (*BoundingBox) GetCorner111 

func (self *BoundingBox) GetCorner111(out *Vector3) *Vector3

func (*BoundingBox) GetDepth 

func (self *BoundingBox) GetDepth() float32

func (*BoundingBox) GetDimensions 

func (self *BoundingBox) GetDimensions(out *Vector3) *Vector3

@param out The {@link Vector3} to receive the dimensions of this bounding box on all three axis. return The vector specified with the out argument

func (*BoundingBox) GetHeight 

func (self *BoundingBox) GetHeight() float32

func (*BoundingBox) GetMax 

func (self *BoundingBox) GetMax(out *Vector3) *Vector3

@param out The {@link Vector3} to receive the maximum values. return The vector specified with the out argument

func (*BoundingBox) GetMin 

func (self *BoundingBox) GetMin(out *Vector3) *Vector3

@param out The {@link Vector3} to receive the minimum values. return The vector specified with the out argument

func (*BoundingBox) GetWidth 

func (self *BoundingBox) GetWidth() float32

func (*BoundingBox) Inf 

func (self *BoundingBox) Inf() *BoundingBox

Todo check Infinity Sets the minimum and maximum vector to positive and negative infinity. return This bounding box for chaining.

func (*BoundingBox) Intersects 

func (self *BoundingBox) Intersects(b *BoundingBox) bool

Returns whether the given bounding box is intersecting this bounding box (at least one point in). param b The bounding box return Whether the given bounding box is intersected

func (*BoundingBox) IsValid 

func (self *BoundingBox) IsValid() bool

Returns whether this bounding box is valid. This means that {@link #max} is greater than {@link #min}. return True in case the bounding box is valid, false otherwise

func (*BoundingBox) Mul 

func (self *BoundingBox) Mul(transform *Matrix4) *BoundingBox

Multiplies the bounding box by the given matrix. This is achieved by multiplying the 8 corner points and then calculating the minimum and maximum vectors from the transformed points. param transform The matrix return This bounding box for chaining.

func (*BoundingBox) Set 

func (self *BoundingBox) Set(min, max *Vector3) *BoundingBox

Sets the given minimum and maximum vector. param minimum The minimum vector param maximum The maximum vector return This bounding box for chaining.

func (*BoundingBox) SetB 

func (self *BoundingBox) SetB(bounds *BoundingBox) *BoundingBox

Sets the given bounding box. param bounds The bounds. return This bounding box for chaining.

func (*BoundingBox) SetV 

func (self *BoundingBox) SetV(points []*Vector3) *BoundingBox

Sets the bounding box minimum and maximum vector from the given points. param points The points. return This bounding box for chaining.

func (*BoundingBox) String 

func (self *BoundingBox) String() string

type Ray 

type Ray struct {
	Origin    *Vector3
	Direction *Vector3
}

Encapsulates a ray having a starting position and a unit length direction.

func NewRay 

func NewRay(origin, direction *Vector3) *Ray

Constructor, sets the starting position of the ray and the direction. param origin The starting position param direction The direction

func NewRayEmpty 

func NewRayEmpty() *Ray

func (*Ray) Copy 

func (self *Ray) Copy() *Ray

return a copy of this ray.

func (*Ray) GetEndPoint 

func (self *Ray) GetEndPoint(out *Vector3, distance float32) *Vector3

Returns the endpoint given the distance. This is calculated as startpoint + distance * direction. param out The vector to set to the result param distance The distance from the end point to the start point.

func (*Ray) Mul 

func (self *Ray) Mul(matrix *Matrix4) *Ray

Multiplies the ray by the given matrix. Use this to transform a ray into another coordinate system. param matrix The matrix

func (*Ray) Set 

func (self *Ray) Set(x, y, z, dx, dy, dz float32) *Ray

Sets this ray from the given starting position and direction. param x The x-component of the starting position param y The y-component of the starting position param z The z-component of the starting position param dx The x-component of the direction param dy The y-component of the direction param dz The z-component of the direction

func (*Ray) SetRay 

func (self *Ray) SetRay(ray *Ray) *Ray

Sets the starting position and direction from the given ray param ray The ray

func (*Ray) SetV3 

func (self *Ray) SetV3(origin, direction *Vector3) *Ray

Sets the starting position and the direction of this ray. param origin The starting position param direction The direction

func (*Ray) String 

func (self *Ray) String() string

type Segment 

type Segment struct {
	// the starting position
	A *Vector3

	// the ending position
	B *Vector3
}

A Segment is a line in 3-space having a staring and an ending position.

func NewSegment 

func NewSegment(aX, aY, aZ, bX, bY, bZ float32) *Segment

Constructs a new Segment from the two points given. param aX the x-coordinate of the first point param aY the y-coordinate of the first point param aZ the z-coordinate of the first point param bX the x-coordinate of the second point param bY the y-coordinate of the second point param bZ the z-coordinate of the second point

func NewSegmentV 

func NewSegmentV(a, b *Vector3) *Segment

Constructs a new Segment from the two points given. param b the second point

func (*Segment) Len 

func (self *Segment) Len() float32

func (*Segment) Len2 

func (self *Segment) Len2() float32

type Sphere 

type Sphere struct {
	Radius float32
	Center *Vector3
}

Encapsulates a 3D sphere with a center and a radius

func NewSphere 

func NewSphere(center *Vector3, radius float32) *Sphere

Constructs a sphere with the given center and radius param center The center param radius The radius

func (*Sphere) Overlaps 

func (self *Sphere) Overlaps(sphere *Sphere) bool

@param sphere the other sphere return whether this and the other sphere overlap

func (*Sphere) SurfaceArea 

func (self *Sphere) SurfaceArea() float32

func (*Sphere) Volume 

func (self *Sphere) Volume() float32

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