1 files changed, 0 insertions, 206 deletions
diff --git a/Godeps/_workspace/src/code.google.com/p/graphics-go/graphics/interp/bilinear.go b/Godeps/_workspace/src/code.google.com/p/graphics-go/graphics/interp/bilinear.go
deleted file mode 100644
index e18321a15..000000000
--- a/Godeps/_workspace/src/code.google.com/p/graphics-go/graphics/interp/bilinear.go
+++ /dev/null
@@ -1,206 +0,0 @@
-// Copyright 2012 The Graphics-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 interp
-
-import (
-	"image"
-	"image/color"
-	"math"
-)
-
-// Bilinear implements bilinear interpolation.
-var Bilinear Interp = bilinear{}
-
-type bilinear struct{}
-
-func (i bilinear) Interp(src image.Image, x, y float64) color.Color {
-	if src, ok := src.(*image.RGBA); ok {
-		return i.RGBA(src, x, y)
-	}
-	return bilinearGeneral(src, x, y)
-}
-
-func bilinearGeneral(src image.Image, x, y float64) color.Color {
-	p := findLinearSrc(src.Bounds(), x, y)
-	var fr, fg, fb, fa float64
-	var r, g, b, a uint32
-
-	r, g, b, a = src.At(p.low.X, p.low.Y).RGBA()
-	fr += float64(r) * p.frac00
-	fg += float64(g) * p.frac00
-	fb += float64(b) * p.frac00
-	fa += float64(a) * p.frac00
-
-	r, g, b, a = src.At(p.high.X, p.low.Y).RGBA()
-	fr += float64(r) * p.frac01
-	fg += float64(g) * p.frac01
-	fb += float64(b) * p.frac01
-	fa += float64(a) * p.frac01
-
-	r, g, b, a = src.At(p.low.X, p.high.Y).RGBA()
-	fr += float64(r) * p.frac10
-	fg += float64(g) * p.frac10
-	fb += float64(b) * p.frac10
-	fa += float64(a) * p.frac10
-
-	r, g, b, a = src.At(p.high.X, p.high.Y).RGBA()
-	fr += float64(r) * p.frac11
-	fg += float64(g) * p.frac11
-	fb += float64(b) * p.frac11
-	fa += float64(a) * p.frac11
-
-	var c color.RGBA64
-	c.R = uint16(fr + 0.5)
-	c.G = uint16(fg + 0.5)
-	c.B = uint16(fb + 0.5)
-	c.A = uint16(fa + 0.5)
-	return c
-}
-
-func (bilinear) RGBA(src *image.RGBA, x, y float64) color.RGBA {
-	p := findLinearSrc(src.Bounds(), x, y)
-
-	// Array offsets for the surrounding pixels.
-	off00 := offRGBA(src, p.low.X, p.low.Y)
-	off01 := offRGBA(src, p.high.X, p.low.Y)
-	off10 := offRGBA(src, p.low.X, p.high.Y)
-	off11 := offRGBA(src, p.high.X, p.high.Y)
-
-	var fr, fg, fb, fa float64
-
-	fr += float64(src.Pix[off00+0]) * p.frac00
-	fg += float64(src.Pix[off00+1]) * p.frac00
-	fb += float64(src.Pix[off00+2]) * p.frac00
-	fa += float64(src.Pix[off00+3]) * p.frac00
-
-	fr += float64(src.Pix[off01+0]) * p.frac01
-	fg += float64(src.Pix[off01+1]) * p.frac01
-	fb += float64(src.Pix[off01+2]) * p.frac01
-	fa += float64(src.Pix[off01+3]) * p.frac01
-
-	fr += float64(src.Pix[off10+0]) * p.frac10
-	fg += float64(src.Pix[off10+1]) * p.frac10
-	fb += float64(src.Pix[off10+2]) * p.frac10
-	fa += float64(src.Pix[off10+3]) * p.frac10
-
-	fr += float64(src.Pix[off11+0]) * p.frac11
-	fg += float64(src.Pix[off11+1]) * p.frac11
-	fb += float64(src.Pix[off11+2]) * p.frac11
-	fa += float64(src.Pix[off11+3]) * p.frac11
-
-	var c color.RGBA
-	c.R = uint8(fr + 0.5)
-	c.G = uint8(fg + 0.5)
-	c.B = uint8(fb + 0.5)
-	c.A = uint8(fa + 0.5)
-	return c
-}
-
-func (bilinear) Gray(src *image.Gray, x, y float64) color.Gray {
-	p := findLinearSrc(src.Bounds(), x, y)
-
-	// Array offsets for the surrounding pixels.
-	off00 := offGray(src, p.low.X, p.low.Y)
-	off01 := offGray(src, p.high.X, p.low.Y)
-	off10 := offGray(src, p.low.X, p.high.Y)
-	off11 := offGray(src, p.high.X, p.high.Y)
-
-	var fc float64
-	fc += float64(src.Pix[off00]) * p.frac00
-	fc += float64(src.Pix[off01]) * p.frac01
-	fc += float64(src.Pix[off10]) * p.frac10
-	fc += float64(src.Pix[off11]) * p.frac11
-
-	var c color.Gray
-	c.Y = uint8(fc + 0.5)
-	return c
-}
-
-type bilinearSrc struct {
-	// Top-left and bottom-right interpolation sources
-	low, high image.Point
-	// Fraction of each pixel to take. The 0 suffix indicates
-	// top/left, and the 1 suffix indicates bottom/right.
-	frac00, frac01, frac10, frac11 float64
-}
-
-func findLinearSrc(b image.Rectangle, sx, sy float64) bilinearSrc {
-	maxX := float64(b.Max.X)
-	maxY := float64(b.Max.Y)
-	minX := float64(b.Min.X)
-	minY := float64(b.Min.Y)
-	lowX := math.Floor(sx - 0.5)
-	lowY := math.Floor(sy - 0.5)
-	if lowX < minX {
-		lowX = minX
-	}
-	if lowY < minY {
-		lowY = minY
-	}
-
-	highX := math.Ceil(sx - 0.5)
-	highY := math.Ceil(sy - 0.5)
-	if highX >= maxX {
-		highX = maxX - 1
-	}
-	if highY >= maxY {
-		highY = maxY - 1
-	}
-
-	// In the variables below, the 0 suffix indicates top/left, and the
-	// 1 suffix indicates bottom/right.
-
-	// Center of each surrounding pixel.
-	x00 := lowX + 0.5
-	y00 := lowY + 0.5
-	x01 := highX + 0.5
-	y01 := lowY + 0.5
-	x10 := lowX + 0.5
-	y10 := highY + 0.5
-	x11 := highX + 0.5
-	y11 := highY + 0.5
-
-	p := bilinearSrc{
-		low:  image.Pt(int(lowX), int(lowY)),
-		high: image.Pt(int(highX), int(highY)),
-	}
-
-	// Literally, edge cases. If we are close enough to the edge of
-	// the image, curtail the interpolation sources.
-	if lowX == highX && lowY == highY {
-		p.frac00 = 1.0
-	} else if sy-minY <= 0.5 && sx-minX <= 0.5 {
-		p.frac00 = 1.0
-	} else if maxY-sy <= 0.5 && maxX-sx <= 0.5 {
-		p.frac11 = 1.0
-	} else if sy-minY <= 0.5 || lowY == highY {
-		p.frac00 = x01 - sx
-		p.frac01 = sx - x00
-	} else if sx-minX <= 0.5 || lowX == highX {
-		p.frac00 = y10 - sy
-		p.frac10 = sy - y00
-	} else if maxY-sy <= 0.5 {
-		p.frac10 = x11 - sx
-		p.frac11 = sx - x10
-	} else if maxX-sx <= 0.5 {
-		p.frac01 = y11 - sy
-		p.frac11 = sy - y01
-	} else {
-		p.frac00 = (x01 - sx) * (y10 - sy)
-		p.frac01 = (sx - x00) * (y11 - sy)
-		p.frac10 = (x11 - sx) * (sy - y00)
-		p.frac11 = (sx - x10) * (sy - y01)
-	}
-
-	return p
-}
-
-// TODO(crawshaw): When we have inlining, consider func (p *RGBA) Off(x, y) int
-func offRGBA(src *image.RGBA, x, y int) int {
-	return (y-src.Rect.Min.Y)*src.Stride + (x-src.Rect.Min.X)*4
-}
-func offGray(src *image.Gray, x, y int) int {
-	return (y-src.Rect.Min.Y)*src.Stride + (x - src.Rect.Min.X)
-}