diff options
Diffstat (limited to 'vendor/golang.org/x/image/font/sfnt/example_test.go')
| -rw-r--r-- | vendor/golang.org/x/image/font/sfnt/example_test.go | 131 |
1 files changed, 0 insertions, 131 deletions
diff --git a/vendor/golang.org/x/image/font/sfnt/example_test.go b/vendor/golang.org/x/image/font/sfnt/example_test.go deleted file mode 100644 index baddcfec0..000000000 --- a/vendor/golang.org/x/image/font/sfnt/example_test.go +++ /dev/null @@ -1,131 +0,0 @@ -// Copyright 2017 The Go Authors. All rights reserved. -// Use of this source code is governed by a BSD-style -// license that can be found in the LICENSE file. - -package sfnt_test - -import ( - "image" - "image/draw" - "log" - "os" - - "golang.org/x/image/font/gofont/goregular" - "golang.org/x/image/font/sfnt" - "golang.org/x/image/math/fixed" - "golang.org/x/image/vector" -) - -func ExampleRasterizeGlyph() { - const ( - ppem = 32 - width = 24 - height = 36 - originX = 0 - originY = 32 - ) - - f, err := sfnt.Parse(goregular.TTF) - if err != nil { - log.Fatalf("Parse: %v", err) - } - var b sfnt.Buffer - x, err := f.GlyphIndex(&b, 'Ġ') - if err != nil { - log.Fatalf("GlyphIndex: %v", err) - } - if x == 0 { - log.Fatalf("GlyphIndex: no glyph index found for the rune 'Ġ'") - } - segments, err := f.LoadGlyph(&b, x, fixed.I(ppem), nil) - if err != nil { - log.Fatalf("LoadGlyph: %v", err) - } - - r := vector.NewRasterizer(width, height) - r.DrawOp = draw.Src - for _, seg := range segments { - // The divisions by 64 below is because the seg.Args values have type - // fixed.Int26_6, a 26.6 fixed point number, and 1<<6 == 64. - switch seg.Op { - case sfnt.SegmentOpMoveTo: - r.MoveTo( - originX+float32(seg.Args[0].X)/64, - originY+float32(seg.Args[0].Y)/64, - ) - case sfnt.SegmentOpLineTo: - r.LineTo( - originX+float32(seg.Args[0].X)/64, - originY+float32(seg.Args[0].Y)/64, - ) - case sfnt.SegmentOpQuadTo: - r.QuadTo( - originX+float32(seg.Args[0].X)/64, - originY+float32(seg.Args[0].Y)/64, - originX+float32(seg.Args[1].X)/64, - originY+float32(seg.Args[1].Y)/64, - ) - case sfnt.SegmentOpCubeTo: - r.CubeTo( - originX+float32(seg.Args[0].X)/64, - originY+float32(seg.Args[0].Y)/64, - originX+float32(seg.Args[1].X)/64, - originY+float32(seg.Args[1].Y)/64, - originX+float32(seg.Args[2].X)/64, - originY+float32(seg.Args[2].Y)/64, - ) - } - } - - dst := image.NewAlpha(image.Rect(0, 0, width, height)) - r.Draw(dst, dst.Bounds(), image.Opaque, image.Point{}) - - const asciiArt = ".++8" - buf := make([]byte, 0, height*(width+1)) - for y := 0; y < height; y++ { - for x := 0; x < width; x++ { - a := dst.AlphaAt(x, y).A - buf = append(buf, asciiArt[a>>6]) - } - buf = append(buf, '\n') - } - os.Stdout.Write(buf) - - // Output: - // ........................ - // ........................ - // ........................ - // ............888......... - // ............888......... - // ............888......... - // ............+++......... - // ........................ - // ..........+++++++++..... - // .......+8888888888888+.. - // ......8888888888888888.. - // ....+8888+........++88.. - // ....8888................ - // ...8888................. - // ..+888+................. - // ..+888.................. - // ..888+.................. - // .+888+.................. - // .+888................... - // .+888................... - // .+888................... - // .+888..........+++++++.. - // .+888..........8888888.. - // .+888+.........+++8888.. - // ..888+............+888.. - // ..8888............+888.. - // ..+888+...........+888.. - // ...8888+..........+888.. - // ...+8888+.........+888.. - // ....+88888+.......+888.. - // .....+8888888888888888.. - // .......+888888888888++.. - // ..........++++++++...... - // ........................ - // ........................ - // ........................ -} |