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Documentation
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Overview ¶
Package floatgeom stores primitives for floating point geometry
Index ¶
- func Distance2(x1, y1, x2, y2 float64) float64
- func Distance3(x1, y1, z1, x2, y2, z2 float64) float64
- type Point2
- func (p Point2) Add(ps ...Point2) Point2
- func (p Point2) AngleTo(p2 Point2) float64
- func (p Point2) Dim(i int) float64
- func (p Point2) Distance(p2 Point2) float64
- func (p Point2) Div(ps ...Point2) Point2
- func (p Point2) GreaterOf(ps ...Point2) Point2
- func (p Point2) LesserOf(ps ...Point2) Point2
- func (p Point2) Mul(ps ...Point2) Point2
- func (p Point2) MulConst(fs ...float64) Point2
- func (p Point2) RadiansTo(p2 Point2) float64
- func (p Point2) Sub(ps ...Point2) Point2
- func (p Point2) ToAngle() float64
- func (p Point2) ToRadians() float64
- func (p Point2) ToRect(span float64) Rect2
- func (p Point2) X() float64
- func (p Point2) Y() float64
- type Point3
- func (p Point3) Add(ps ...Point3) Point3
- func (p Point3) Dim(i int) float64
- func (p Point3) Distance(p2 Point3) float64
- func (p Point3) Div(ps ...Point3) Point3
- func (p Point3) GreaterOf(ps ...Point3) Point3
- func (p Point3) LesserOf(ps ...Point3) Point3
- func (p Point3) Mul(ps ...Point3) Point3
- func (p Point3) MulConst(fs ...float64) Point3
- func (p Point3) Sub(ps ...Point3) Point3
- func (p Point3) ToRect(span float64) Rect3
- func (p Point3) X() float64
- func (p Point3) Y() float64
- func (p Point3) Z() float64
- type Rect2
- func (r Rect2) Area() float64
- func (r Rect2) Contains(p Point2) bool
- func (r Rect2) ContainsRect(r2 Rect2) bool
- func (r Rect2) GreaterOf(r2 Rect2) Rect2
- func (r Rect2) H() float64
- func (r Rect2) Intersects(r2 Rect2) bool
- func (r Rect2) MaxDimensions() int
- func (r Rect2) Midpoint(i int) float64
- func (r Rect2) Perimeter() float64
- func (r Rect2) Span(i int) float64
- func (r Rect2) W() float64
- type Rect3
- func (r Rect3) Contains(p Point3) bool
- func (r Rect3) ContainsRect(r2 Rect3) bool
- func (r Rect3) D() float64
- func (r Rect3) GreaterOf(r2 Rect3) Rect3
- func (r Rect3) H() float64
- func (r Rect3) Intersects(r2 Rect3) bool
- func (r Rect3) Margin() float64
- func (r Rect3) MaxDimensions() int
- func (r Rect3) Midpoint(i int) float64
- func (r Rect3) Space() float64
- func (r Rect3) Span(i int) float64
- func (r Rect3) W() float64
Constants ¶
This section is empty.
Variables ¶
This section is empty.
Functions ¶
Types ¶
type Point2 ¶
type Point2 [2]float64
Point2 represents a 2D point in space.
func AnglePoint ¶
AnglePoint creates a unit vector from the given angle in degrees as a Point2.
func RadianPoint ¶
RadianPoint creates a unit vector from the given angle in radians as a Point2.
func (Point2) Dim ¶
Dim returns the value of p in the ith dimension. Panics if i > 1. No check is made for efficiency's sake, pending benchmarks, but adding an error here would significantly worsen the API.
func (Point2) GreaterOf ¶
GreaterOf returns the highest values on each axis of the input points as a point.
func (Point2) LesserOf ¶
LesserOf returns the lowest values on each axis of the input points as a point.
type Point3 ¶
type Point3 [3]float64
Point3 represents a 3D point in space.
func (Point3) Dim ¶
Dim returns the value of p in the ith dimension. Panics if i > 2. No check is made for efficiency's sake, pending benchmarks, but adding an error here would significantly worsen the API.
func (Point3) GreaterOf ¶
GreaterOf returns the highest values on each axis of the input points as a point.
func (Point3) LesserOf ¶
LesserOf returns the lowest values on each axis of the input points as a point.
type Rect2 ¶
type Rect2 struct {
Min, Max Point2
}
A Rect2 represents a span from one point in 2D space to another. If Min is less than max on any axis, it will return undefined results for methods.
func NewBoundingRect2 ¶
NewBoundingRect2 will produce the minimal rectangle that contains all of the input points.
func NewRect2 ¶
NewRect2 returns an (X,Y):(X2,Y2) rectangle. This enforces that x < x2 and y < y2, and will swap the inputs if that is not true. If that enforcement is not desired, construct the struct manually.
func NewRect2WH ¶
NewRect2WH returns an (X,Y):(X+W,Y+H) rectangle. This enforces that w and h are positive, and will decrease x and y respectively if that is not true.
func (Rect2) ContainsRect ¶
ContainsRect tests whether r2 is is located inside r1.
func (Rect2) GreaterOf ¶
GreaterOf returns a rectangle formed of the lowest values on each dimension for Min, and the highest for Max.
func (Rect2) Intersects ¶
Intersects returns whether the two rectangles intersect.
func (Rect2) MaxDimensions ¶
MaxDimensions reports that a Rect2 has only two dimensions of definition.
func (Rect2) Midpoint ¶
Midpoint returns the midpoint of this rectangle's span over a given dimension.
type Rect3 ¶
type Rect3 struct {
Min, Max Point3
}
A Rect3 represents a span from one point in 3D space to another. If Min is less than Max on any axis, it will return undefined results for methods.
func NewBoundingRect3 ¶
NewBoundingRect3 will produce the minimal rectangle that contains all of the input points.
func NewRect3 ¶
NewRect3 returns an (X,Y,Z):(X2,Y2,Z2) rectangle. This enforces that x < x2, y < y2, and z < z2, and will swap the inputs if that is not true.
func NewRect3WH ¶
NewRect3WH returns an (X,Y,Z):(X+W,Y+H,Z+D) rectangle. This enforces that w, h, and d and positive, and will decrease x, y, and z respectively if that is not true.
func (Rect3) ContainsRect ¶
ContainsRect tests whether r2 is is located inside r1.
func (Rect3) GreaterOf ¶
GreaterOf returns a rectangle formed of the lowest values on each dimension for Min, and the highest for Max.
func (Rect3) Intersects ¶
Intersects returns whether the two rectangles intersect.
func (Rect3) MaxDimensions ¶
MaxDimensions reports that a Rect3 has only three dimensions of definition.
func (Rect3) Midpoint ¶
Midpoint returns the midpoint of this rectangle's span over a given dimension.
Source Files