mapserver/tilerenderer/blank.go

package tilerenderer

import (
	"bytes"
	"image"
	"image/color"
	"image/draw"
	"image/png"
)

func CreateBlankTile(c color.RGBA) []byte {
	rect := image.Rectangle{
		image.Point{0, 0},
		image.Point{IMG_SIZE, IMG_SIZE},
	}

	img := image.NewNRGBA(rect)
	draw.Draw(img, rect, &image.Uniform{c}, image.ZP, draw.Src)

	buf := new(bytes.Buffer)
	png.Encode(buf, img)

	return buf.Bytes()
}