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main.go
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main.go
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// Port of http://members.shaw.ca/el.supremo/MagickWand/make_tile.htm to Go
package main
import "gopkg.in/gographics/imagick.v3/imagick"
// make-tile creates a tileable image from an input image.
// ( +clone -flop ) +append ( +clone -flip ) -append -resize 50%
func make_tile(mw *imagick.MagickWand, outfile string) {
mwc := mw.Clone()
mwc.FlopImage()
mw.AddImage(mwc)
mwc.Destroy()
mwc = mw.AppendImages(false)
mwf := mwc.Clone()
mwf.FlipImage()
mwc.AddImage(mwf)
mwf.Destroy()
mwf = mwc.AppendImages(true)
w := mwf.GetImageWidth()
h := mwf.GetImageHeight()
// 1 = Don't blur or sharpen image
mwf.ResizeImage(w/2, h/2, imagick.FILTER_LANCZOS, 1)
mwf.WriteImage(outfile)
mwf.Destroy()
mwc.Destroy()
}
func main() {
imagick.Initialize()
defer imagick.Terminate()
mw := imagick.NewMagickWand()
mw.SetSize(100, 100)
mw.ReadImage("plasma:red-yellow")
make_tile(mw, "tile_plasma.png")
mw.Destroy()
mw = imagick.NewMagickWand()
mw.SetSize(100, 100)
mw.ReadImage("xc:")
mw.AddNoiseImage(imagick.NOISE_RANDOM)
mw.SetImageVirtualPixelMethod(imagick.VIRTUAL_PIXEL_TILE)
mw.BlurImage(0, 10)
mw.NormalizeImage()
make_tile(mw, "tile_random.png")
mw.Destroy()
}