graphics2D

package
v0.0.6 Latest Latest
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 Go to latest Published: Nov 20, 2020 License: Apache-2.0 Imports: 2 Imported by: 5

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Index

Constants

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Variables

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Functions

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Types

type BaseGeometryClass 

type BaseGeometryClass struct {
	Box      *BoundingBox
	Geometry []Point
}

func (*BaseGeometryClass) Area 

func (bg *BaseGeometryClass) Area() (area float64)

func (*BaseGeometryClass) Centroid 

func (bg *BaseGeometryClass) Centroid() (ct *Point)

func (*BaseGeometryClass) GetBoundingBox 

func (bg *BaseGeometryClass) GetBoundingBox() (bb *BoundingBox)

func (*BaseGeometryClass) GetGeometry 

func (bg *BaseGeometryClass) GetGeometry() (geom []Point)

func (*BaseGeometryClass) InverseTransformLambertAzimuthal 

func (bg *BaseGeometryClass) InverseTransformLambertAzimuthal(radius float64, center *Point)

func (*BaseGeometryClass) SetGeometry 

func (bg *BaseGeometryClass) SetGeometry(geom []Point)

func (*BaseGeometryClass) TransformLambertAzimuthal 

func (bg *BaseGeometryClass) TransformLambertAzimuthal(radius float64, center *Point)

type BoundingBox 

type BoundingBox struct {
	XMin [2]float32
	XMax [2]float32
}

func BoundingBoxFromGoogleMapsZoom 

func BoundingBoxFromGoogleMapsZoom(vCenter Point, canvasWidth int, zoomLevel float64) (viewBox *BoundingBox)

func NewBoundingBox 

func NewBoundingBox(Geometry []Point) (Box *BoundingBox)

func (*BoundingBox) Centroid 

func (bb *BoundingBox) Centroid() (centroid *Point)

func (*BoundingBox) Divide 

func (bb *BoundingBox) Divide(denom *BoundingBox) (scaleX []float64)

func (*BoundingBox) Grow 

func (bb *BoundingBox) Grow(newBB *BoundingBox)

func (*BoundingBox) MoveToOrigin 

func (bb *BoundingBox) MoveToOrigin() (bbOut *BoundingBox)

func (*BoundingBox) Outline 

func (bb *BoundingBox) Outline() (pLine *PolyLine)

func (*BoundingBox) PointInside 

func (bb *BoundingBox) PointInside(point *Point) (within bool)

func (*BoundingBox) Scale 

func (bb *BoundingBox) Scale(scale float32) (bbOut *BoundingBox)

func (*BoundingBox) ScaleX 

func (bb *BoundingBox) ScaleX(scale float32) (bbOut *BoundingBox)

func (*BoundingBox) ScaleY 

func (bb *BoundingBox) ScaleY(scale float32) (bbOut *BoundingBox)

func (*BoundingBox) Translate 

func (bb *BoundingBox) Translate(panX [2]float32) (bbOut *BoundingBox)

type GeometryInterface 

type GeometryInterface interface {
	GetGeometry() []Point
	SetGeometry([]Point) // Allows for external transformations
	GetBoundingBox() *BoundingBox
	Area() float64
	Centroid() *Point
}

type Line 

type Line struct {
	Box *BoundingBox
	// contains filtered or unexported fields
}

func NewLine 

func NewLine(pt1, pt2 Point) (line *Line)

func (*Line) Area 

func (ln *Line) Area() (area float64)

func (*Line) Centroid 

func (ln *Line) Centroid() (centroid *Point)

func (*Line) GetBoundingBox 

func (ln *Line) GetBoundingBox() (box *BoundingBox)

func (*Line) GetGeometry 

func (ln *Line) GetGeometry() (geom []Point)

func (*Line) SetGeometry 

func (ln *Line) SetGeometry(geom []Point)

type Point 

type Point struct {
	X [2]float32
}

func LineLineIntersection 

func LineLineIntersection(line1, line2 *Line) *Point

func NewPoint 

func NewPoint(x, y float32) *Point

func (*Point) Area 

func (pt *Point) Area() (area float64)

func (*Point) Centroid 

func (pt *Point) Centroid() (centroid *Point)

func (*Point) Equal 

func (pt *Point) Equal(rhs Point) bool

func (*Point) GetBoundingBox 

func (pt *Point) GetBoundingBox() (box *BoundingBox)

func (*Point) GetGeometry 

func (pt *Point) GetGeometry() (geom []Point)

func (*Point) Minus 

func (pt *Point) Minus(rhs *Point) (res *Point)

func (*Point) Plus 

func (pt *Point) Plus(rhs *Point) (res *Point)

func (*Point) Scale 

func (pt *Point) Scale(scale Point)

func (*Point) SetGeometry 

func (pt *Point) SetGeometry(geom []Point)

type PolyLine 

type PolyLine struct {
	BaseGeometryClass
}

func NewPolyLine 

func NewPolyLine(geom []Point) (pl *PolyLine)

type Polygon 

type Polygon struct {
	BaseGeometryClass
}

func NewNgon 

func NewNgon(centroid Point, radius float64, n int) (poly *Polygon)

func NewNgonGivenArea 

func NewNgonGivenArea(centroid Point, area float64, n int) (poly *Polygon)

func NewPolygon 

func NewPolygon(geom []Point) (poly *Polygon)

func (*Polygon) Area 

func (pg *Polygon) Area() (area float64)

func (*Polygon) Centroid 

func (pg *Polygon) Centroid() (centroid *Point)

func (*Polygon) PointInside 

func (pg *Polygon) PointInside(point Point) (inside bool)

type QuadMesh 

type QuadMesh struct {
	BaseGeometryClass
	Dimensions [2]int
	Attributes [][]float32
}

type TriMesh 

type TriMesh struct {
	BaseGeometryClass
	Triangles  []Triangle
	Attributes [][]float32
}

func (*TriMesh) AddQuadMesh 

func (tm *TriMesh) AddQuadMesh(mesh *QuadMesh) error

func (*TriMesh) Area 

func (tm *TriMesh) Area() (area float64)

func (*TriMesh) Centroid 

func (tm *TriMesh) Centroid() (centroid *Point)

type Triangle 

type Triangle struct {
	Nodes [3]int32
}

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