package drawing import ( "image" "image/color" "git.gutmet.org/golang-image.git/draw" "git.gutmet.org/golang-image.git/math/f64" "git.gutmet.org/golang-freetype.git/raster" ) // Painter implements the freetype raster.Painter and has a SetColor method like the RGBAPainter type Painter interface { raster.Painter SetColor(color color.Color) } // DrawImage draws an image into dest using an affine transformation matrix, an op and a filter func DrawImage(src image.Image, dest draw.Image, tr Matrix, op draw.Op, filter ImageFilter) { var transformer draw.Transformer switch filter { case LinearFilter: transformer = draw.NearestNeighbor case BilinearFilter: transformer = draw.BiLinear case BicubicFilter: transformer = draw.CatmullRom } transformer.Transform(dest, f64.Aff3{tr[0], tr[1], tr[4], tr[2], tr[3], tr[5]}, src, src.Bounds(), op, nil) }