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cyberglobe.go

package main

import (
	"image/color"
	"log"

	"fmt"

	"github.com/mmcloughlin/globe"
)

func main() {
	log.Printf("boop")

	for lat := 0; lat < 180; lat++ {
		globe.DefaultStyle.Background = color.NRGBA{0x00, 0x00, 0x00, 255}
		g := globe.New()
		green := color.NRGBA{0x00, 0xFF, 0x00, 255}

		g.DrawCountryBoundaries(globe.Color(green))
		g.DrawGraticule(30)
		g.CenterOn(51, (float64(lat)-180.0)*2)
		g.SavePNG(fmt.Sprintf("%d.png", lat), 400)
	}
}

makegif.sh

#!/bin/sh

palette="/tmp/palette.png"

filters="fps=25"

ffmpeg -v warning -i $1 -vf "$filters,palettegen" -y $palette
ffmpeg -v warning -f image2 -i %d.png -i $palette -lavfi "$filters [x]; [x][1:v] paletteuse" -y $2

out.gif