d3

package
v0.0.0-...-6596a10 Latest Latest
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 Go to latest Published: Aug 12, 2024 License: MIT Imports: 4 Imported by: 0

Documentation

Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func AbsElem 

func AbsElem(a r3.Vec) r3.Vec

func CeilElem 

func CeilElem(a r3.Vec) r3.Vec

func Clamp 

func Clamp(x, a, b r3.Vec) r3.Vec

func CosElem 

func CosElem(a r3.Vec) r3.Vec

func DivElem 

func DivElem(a, b r3.Vec) r3.Vec

func Elem 

func Elem(sides float64) r3.Vec

func EqualWithin 

func EqualWithin(a, b r3.Vec, tol float64) bool

func FromR2 

func FromR2(v r2.Vec, z float64) r3.Vec

func LTEZero 

func LTEZero(a r3.Vec) bool

LTEZero returns true if any vector components are <= 0.

func LTZero 

func LTZero(a r3.Vec) bool

LTZero returns true if any vector components are < 0.

func Max 

func Max(a r3.Vec) float64

func MaxElem 

func MaxElem(a, b r3.Vec) r3.Vec

MaxElem return a vector with the maximum components of two vectors.

func Min 

func Min(a r3.Vec) float64

func MinElem 

func MinElem(a, b r3.Vec) r3.Vec

MinElem return a vector with the minimum components of two vectors.

func MulElem 

func MulElem(a, b r3.Vec) r3.Vec

func SinElem 

func SinElem(a r3.Vec) r3.Vec

Types

type Box 

type Box r3.Box

d3.Box is a 3d bounding box.

func CenteredBox 

func CenteredBox(center, size r3.Vec) Box

CenteredBox creates a Box with a given center and size. Negative components of size will be interpreted as zero.

func NewBox 

func NewBox(center, size r3.Vec) Box

Newd3.Box creates a 3d box with a given center and size.

func (Box) Center 

func (a Box) Center() r3.Vec

Center returns the center of a 3d box.

func (Box) Contains 

func (a Box) Contains(v r3.Vec) bool

Contains checks if the 3d box contains the given vector (considering bounds as inside).

func (Box) Enlarge 

func (a Box) Enlarge(v r3.Vec) Box

Enlarge returns a new 3d box enlarged by a size vector.

func (Box) Equals 

func (a Box) Equals(b Box, tol float64) bool

Equals test the equality of 3d boxes.

func (Box) Extend 

func (a Box) Extend(b Box) Box

Extend returns a box enclosing two 3d boxes.

func (Box) Include 

func (a Box) Include(v r3.Vec) Box

Include enlarges a 3d box to include a point.

func (Box) MinMaxDist2 

func (a Box) MinMaxDist2(p r3.Vec) (min, max float64)

MinMaxDist2 returns the minimum and maximum dist * dist from a point to a box. Points within the box have minimum distance = 0.

func (*Box) Random 

func (b *Box) Random() r3.Vec

Random returns a random point within a bounding box.

func (*Box) RandomSet 

func (b *Box) RandomSet(n int) Set

RandomSet returns a set of random points from within a bounding box.

func (Box) ScaleAboutCenter 

func (a Box) ScaleAboutCenter(k float64) Box

ScaleAboutCenter returns a new 3d box scaled about the center of a box.

func (Box) Size 

func (a Box) Size() r3.Vec

Size returns the size of a 3d box.

func (Box) Translate 

func (a Box) Translate(v r3.Vec) Box

Translate translates a 3d box.

func (Box) Vertices 

func (a Box) Vertices() Set

Vertices returns a slice of 3d box corner vertices.

type Set 

type Set []r3.Vec

func (Set) Max 

func (a Set) Max() r3.Vec

Max return the maximum components of a set of vectors.

func (Set) Min 

func (a Set) Min() r3.Vec

Min return the minimum components of a set of vectors.

type Transform 

type Transform struct {
	// contains filtered or unexported fields
}

Transform represents a 3D spatial transformation. The zero value of Transform is the identity transform.

func ComposeTransform 

func ComposeTransform(position, scale r3.Vec, q r3.Rotation) Transform

ComposeTransform creates a new transform for a given translation to positon, scaling vector scale and quaternion rotation. The identity Transform is constructed with 

ComposeTransform(Vec{}, Vec{1,1,1}, Rotation{})

func NewTransform 

func NewTransform(a []float64) Transform

NewTransform returns a new Transform type and populates its elements with values passed in row-major form. If val is nil then NewTransform returns a Transform filled with zeros.

func (Transform) Det 

func (t Transform) Det() float64

Det returns the determinant of the Transform.

func (Transform) Inv 

func (t Transform) Inv() Transform

Inv returns the inverse of the transform such that t.Inv() * t is the identity Transform. If matrix is singular then Inv() returns the zero transform.

func (Transform) Mul 

func (t Transform) Mul(b Transform) Transform

Mul multiplies the Transforms a and b and returns the result. This is the equivalent of combining two transforms in one.

func (Transform) Scale 

func (t Transform) Scale(origin, factor r3.Vec) Transform

Scale returns the transform with scaling added around the argumnt origin.

func (Transform) SliceCopy 

func (t Transform) SliceCopy() []float64

SliceCopy returns a copy of the Transform's data in row major storage format. It returns 16 elements.

func (Transform) Transform 

func (t Transform) Transform(v r3.Vec) r3.Vec

Transform applies the Transform to the argument vector and returns the result.

func (Transform) Translate 

func (t Transform) Translate(v r3.Vec) Transform

Translate adds Vec to the positional Transform.

Source Files

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