Projector

package
v0.5.2 Latest Latest
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 Go to latest Published: Mar 29, 2019 License: MIT Imports: 7 Imported by: 0

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Index

Constants

This section is empty.

Variables

This section is empty.

Functions

func BilinearInterp 

func BilinearInterp(data []byte, x, y float64, mw int, numChannels, colorChannel int) byte

Types

type LinearConverter added in v0.5.2 

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

LinearConverter This is used for pixel map to coordinates from a reprojected image.

func (*LinearConverter) ColumnOffset added in v0.5.2 

func (gc *LinearConverter) ColumnOffset() int

ColumnOffset returns the number of pixels that the image is offset from left

func (*LinearConverter) CropLeft added in v0.5.2 

func (gc *LinearConverter) CropLeft() int

CropLeft returns the number of pixels that should be cropped

func (*LinearConverter) Hash added in v0.5.2 

func (gc *LinearConverter) Hash() string

func (*LinearConverter) LatLon2XY added in v0.5.2 

func (gc *LinearConverter) LatLon2XY(lat, lon float64) (x, y int)

LatLon2XY Converts Latitude/Longitude to Pixel X/Y lat => Latitude in Degrees lon => Longitude in Degrees

func (*LinearConverter) LatLon2XYf added in v0.5.2 

func (gc *LinearConverter) LatLon2XYf(lat, lon float64) (x, y float64)

LatLon2XYf Converts Latitude/Longitude to Pixel X/Y (float64) lat => Latitude in Degrees lon => Longitude in Degrees

func (*LinearConverter) LatitudeCoverage added in v0.5.2 

func (gc *LinearConverter) LatitudeCoverage() float64

LatitudeCoverage returns Coverage of the view in Latitude Degrees

func (*LinearConverter) LineOffset added in v0.5.2 

func (gc *LinearConverter) LineOffset() int

LineOffset returns the number of pixels that the image is offset from top

func (*LinearConverter) LongitudeCoverage added in v0.5.2 

func (gc *LinearConverter) LongitudeCoverage() float64

LongitudeCoverage returns Coverage of the view in Longitude Degrees

func (*LinearConverter) MaxLatitude added in v0.5.2 

func (gc *LinearConverter) MaxLatitude() float64

MaxLatitude returns the Maximum Visible Latitude

func (*LinearConverter) MaxLongitude added in v0.5.2 

func (gc *LinearConverter) MaxLongitude() float64

MaxLongitude returns Maximum visible Longitude

func (*LinearConverter) MinLatitude added in v0.5.2 

func (gc *LinearConverter) MinLatitude() float64

MinLatitude returns Minimum Visible Latitude

func (*LinearConverter) MinLongitude added in v0.5.2 

func (gc *LinearConverter) MinLongitude() float64

MinLongitude returns Minimum visible latitude

func (*LinearConverter) TrimLatitude added in v0.5.2 

func (gc *LinearConverter) TrimLatitude() float64

TrimLatitude returns Latitude Trim parameter for removing artifacts on Reprojection (in degrees)

func (*LinearConverter) TrimLongitude added in v0.5.2 

func (gc *LinearConverter) TrimLongitude() float64

TrimLongitude returns Longitude Trim parameter for removing artifacts on Reprojection (in degrees)

func (*LinearConverter) XY2LatLon added in v0.5.2 

func (gc *LinearConverter) XY2LatLon(x, y int) (lat, lon float64)

XY2LatLon Converts Pixel X/Y to Latitude/Longitude lat => Latitude in Degrees lon => Longitude in Degrees

type ProjectionConverter added in v0.5.2 

type ProjectionConverter interface {
	// LatLon2XY Converts Latitude/Longitude to Pixel X/Y
	// lat => Latitude in Degrees
	// lon => Longitude in Degrees
	LatLon2XY(lat, lon float64) (x, y int)

	// LatLon2XYf Converts Latitude/Longitude to Pixel X/Y (float64)
	// lat => Latitude in Degrees
	// lon => Longitude in Degrees
	LatLon2XYf(lat, lon float64) (x, y float64)

	// XY2LatLon Converts Pixel X/Y to Latitude/Longitude
	// lat => Latitude in Degrees
	// lon => Longitude in Degrees
	XY2LatLon(x, y int) (lat, lon float64)

	Hash() string

	// ColumnOffset returns the number of pixels that the image is offset from left
	ColumnOffset() int

	// LineOffset returns the number of pixels that the image is offset from top
	LineOffset() int

	// CropLeft returns the number of pixels that should be cropped
	CropLeft() int

	// MaxLatitude returns the Maximum Visible Latitude
	MaxLatitude() float64

	// MinLatitude returns Minimum Visible Latitude
	MinLatitude() float64

	// MaxLongitude returns Maximum visible Longitude
	MaxLongitude() float64

	// MinLongitude returns Minimum visible latitude
	MinLongitude() float64

	// LatitudeCoverage returns Coverage of the view in Latitude Degrees
	LatitudeCoverage() float64

	// LongitudeCoverage returns Coverage of the view in Longitude Degrees
	LongitudeCoverage() float64

	// TrimLongitude returns Longitude Trim parameter for removing artifacts on Reprojection (in degrees)
	TrimLongitude() float64

	// TrimLatitude returns Latitude Trim parameter for removing artifacts on Reprojection (in degrees)
	TrimLatitude() float64
}

func MakeLinearConverter added in v0.5.2 

func MakeLinearConverter(imgWidth, imgHeight int, pc ProjectionConverter) ProjectionConverter

MakeLinearConverter Creates a new instance of LinearConverter 

This is used for pixel map to coordinates from a reprojected image.
imgWidth => Image Width in pixels
imgHeight => Image Height in pixels
pc => Previous Projection Converter (before reprojection)

type Projector 

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

func MakeProjector 

func MakeProjector(gc ProjectionConverter) *Projector

func (*Projector) DrawLatLonLines 

func (p *Projector) DrawLatLonLines(src *image.RGBA, thickness int, c color.Color)

func (*Projector) ReprojectLinear 

func (p *Projector) ReprojectLinear(src *image.RGBA) *image.RGBA

func (*Projector) ReprojectLinearGray 

func (p *Projector) ReprojectLinearGray(src *image.Gray) *image.Gray

func (*Projector) ReprojectLinearMultiThread 

func (p *Projector) ReprojectLinearMultiThread(src image.Image) *image.RGBA

func (*Projector) ReprojectLinearMultiThreadGray 

func (p *Projector) ReprojectLinearMultiThreadGray(src image.Image) *image.Gray

type Sampler2D 

type Sampler2D struct {
	// contains filtered or unexported fields
}

func MakeSampler2D 

func MakeSampler2D(img image.Image) *Sampler2D

func (*Sampler2D) GetPixel 

func (s *Sampler2D) GetPixel(x, y float64) color.Color

func (*Sampler2D) GetPixelGray 

func (s *Sampler2D) GetPixelGray(x, y float64) color.Gray

Source Files

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