diff options
Diffstat (limited to 'Godeps/_workspace/src/github.com/disintegration/imaging/transform.go')
| -rw-r--r-- | Godeps/_workspace/src/github.com/disintegration/imaging/transform.go | 201 |
1 files changed, 0 insertions, 201 deletions
diff --git a/Godeps/_workspace/src/github.com/disintegration/imaging/transform.go b/Godeps/_workspace/src/github.com/disintegration/imaging/transform.go deleted file mode 100644 index a11601bba..000000000 --- a/Godeps/_workspace/src/github.com/disintegration/imaging/transform.go +++ /dev/null @@ -1,201 +0,0 @@ -package imaging - -import ( - "image" -) - -// Rotate90 rotates the image 90 degrees counterclockwise and returns the transformed image. -func Rotate90(img image.Image) *image.NRGBA { - src := toNRGBA(img) - srcW := src.Bounds().Max.X - srcH := src.Bounds().Max.Y - dstW := srcH - dstH := srcW - dst := image.NewNRGBA(image.Rect(0, 0, dstW, dstH)) - - parallel(dstH, func(partStart, partEnd int) { - - for dstY := partStart; dstY < partEnd; dstY++ { - for dstX := 0; dstX < dstW; dstX++ { - srcX := dstH - dstY - 1 - srcY := dstX - - srcOff := srcY*src.Stride + srcX*4 - dstOff := dstY*dst.Stride + dstX*4 - - copy(dst.Pix[dstOff:dstOff+4], src.Pix[srcOff:srcOff+4]) - } - } - - }) - - return dst -} - -// Rotate180 rotates the image 180 degrees counterclockwise and returns the transformed image. -func Rotate180(img image.Image) *image.NRGBA { - src := toNRGBA(img) - srcW := src.Bounds().Max.X - srcH := src.Bounds().Max.Y - dstW := srcW - dstH := srcH - dst := image.NewNRGBA(image.Rect(0, 0, dstW, dstH)) - - parallel(dstH, func(partStart, partEnd int) { - - for dstY := partStart; dstY < partEnd; dstY++ { - for dstX := 0; dstX < dstW; dstX++ { - srcX := dstW - dstX - 1 - srcY := dstH - dstY - 1 - - srcOff := srcY*src.Stride + srcX*4 - dstOff := dstY*dst.Stride + dstX*4 - - copy(dst.Pix[dstOff:dstOff+4], src.Pix[srcOff:srcOff+4]) - } - } - - }) - - return dst -} - -// Rotate270 rotates the image 270 degrees counterclockwise and returns the transformed image. -func Rotate270(img image.Image) *image.NRGBA { - src := toNRGBA(img) - srcW := src.Bounds().Max.X - srcH := src.Bounds().Max.Y - dstW := srcH - dstH := srcW - dst := image.NewNRGBA(image.Rect(0, 0, dstW, dstH)) - - parallel(dstH, func(partStart, partEnd int) { - - for dstY := partStart; dstY < partEnd; dstY++ { - for dstX := 0; dstX < dstW; dstX++ { - srcX := dstY - srcY := dstW - dstX - 1 - - srcOff := srcY*src.Stride + srcX*4 - dstOff := dstY*dst.Stride + dstX*4 - - copy(dst.Pix[dstOff:dstOff+4], src.Pix[srcOff:srcOff+4]) - } - } - - }) - - return dst -} - -// FlipH flips the image horizontally (from left to right) and returns the transformed image. -func FlipH(img image.Image) *image.NRGBA { - src := toNRGBA(img) - srcW := src.Bounds().Max.X - srcH := src.Bounds().Max.Y - dstW := srcW - dstH := srcH - dst := image.NewNRGBA(image.Rect(0, 0, dstW, dstH)) - - parallel(dstH, func(partStart, partEnd int) { - - for dstY := partStart; dstY < partEnd; dstY++ { - for dstX := 0; dstX < dstW; dstX++ { - srcX := dstW - dstX - 1 - srcY := dstY - - srcOff := srcY*src.Stride + srcX*4 - dstOff := dstY*dst.Stride + dstX*4 - - copy(dst.Pix[dstOff:dstOff+4], src.Pix[srcOff:srcOff+4]) - } - } - - }) - - return dst -} - -// FlipV flips the image vertically (from top to bottom) and returns the transformed image. -func FlipV(img image.Image) *image.NRGBA { - src := toNRGBA(img) - srcW := src.Bounds().Max.X - srcH := src.Bounds().Max.Y - dstW := srcW - dstH := srcH - dst := image.NewNRGBA(image.Rect(0, 0, dstW, dstH)) - - parallel(dstH, func(partStart, partEnd int) { - - for dstY := partStart; dstY < partEnd; dstY++ { - for dstX := 0; dstX < dstW; dstX++ { - srcX := dstX - srcY := dstH - dstY - 1 - - srcOff := srcY*src.Stride + srcX*4 - dstOff := dstY*dst.Stride + dstX*4 - - copy(dst.Pix[dstOff:dstOff+4], src.Pix[srcOff:srcOff+4]) - } - } - - }) - - return dst -} - -// Transpose flips the image horizontally and rotates 90 degrees counter-clockwise. -func Transpose(img image.Image) *image.NRGBA { - src := toNRGBA(img) - srcW := src.Bounds().Max.X - srcH := src.Bounds().Max.Y - dstW := srcH - dstH := srcW - dst := image.NewNRGBA(image.Rect(0, 0, dstW, dstH)) - - parallel(dstH, func(partStart, partEnd int) { - - for dstY := partStart; dstY < partEnd; dstY++ { - for dstX := 0; dstX < dstW; dstX++ { - srcX := dstY - srcY := dstX - - srcOff := srcY*src.Stride + srcX*4 - dstOff := dstY*dst.Stride + dstX*4 - - copy(dst.Pix[dstOff:dstOff+4], src.Pix[srcOff:srcOff+4]) - } - } - - }) - - return dst -} - -// Transverse flips the image vertically and rotates 90 degrees counter-clockwise. -func Transverse(img image.Image) *image.NRGBA { - src := toNRGBA(img) - srcW := src.Bounds().Max.X - srcH := src.Bounds().Max.Y - dstW := srcH - dstH := srcW - dst := image.NewNRGBA(image.Rect(0, 0, dstW, dstH)) - - parallel(dstH, func(partStart, partEnd int) { - - for dstY := partStart; dstY < partEnd; dstY++ { - for dstX := 0; dstX < dstW; dstX++ { - srcX := dstH - dstY - 1 - srcY := dstW - dstX - 1 - - srcOff := srcY*src.Stride + srcX*4 - dstOff := dstY*dst.Stride + dstX*4 - - copy(dst.Pix[dstOff:dstOff+4], src.Pix[srcOff:srcOff+4]) - } - } - - }) - - return dst -} |