radar

package

v0.1.1 Latest Latest Go to latest Published: Feb 16, 2026 License: MIT Imports: 12 Imported by: 0

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var BelgiumBounds = Bounds{
	North: 51.6,
	South: 49.4,
	East:  6.5,
	West:  2.3,
}

BelgiumBounds covers the Belgium radar area

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var NetherlandsBounds = Bounds{
	North: 53.6,
	South: 50.7,
	East:  7.3,
	West:  3.3,
}

NetherlandsBounds covers the Netherlands radar area

func CreateGIF(framePaths []string, timestamps []string, background image.Image, markerX, markerY int, speed float64, outputPath string) error

CreateGIF creates an animated GIF from radar frames with background, marker, and timestamps

func GetBackground(ctx context.Context, bounds Bounds, cacheDir string, targetSize int) (image.Image, error)

GetBackground fetches or loads cached background map for given bounds

func LatLonToPixel(lat, lon float64, bounds Bounds, imageSize int) (x, y int)

LatLonToPixel converts lat/lon to pixel coordinates within the given bounds Uses Mercator projection for accurate Y positioning on OSM-based maps

func LoadFrame(path string) (image.Image, error)

LoadFrame loads a PNG frame from disk

type Bounds struct {
	North, South, East, West float64
}

Bounds represents geographic boundaries

type Tile struct {
	X, Y, Z int
}

Tile represents an OSM tile coordinate