1 files changed, 0 insertions, 150 deletions
diff --git a/Godeps/_workspace/src/code.google.com/p/draw2d/draw2d/rgba_interpolation.go b/Godeps/_workspace/src/code.google.com/p/draw2d/draw2d/rgba_interpolation.go
deleted file mode 100644
index 92534e7eb..000000000
--- a/Godeps/_workspace/src/code.google.com/p/draw2d/draw2d/rgba_interpolation.go
+++ /dev/null
@@ -1,150 +0,0 @@
-// Copyright 2010 The draw2d Authors. All rights reserved.
-// created: 21/11/2010 by Laurent Le Goff
-// see http://pippin.gimp.org/image_processing/chap_resampling.html
-
-package draw2d
-
-import (
-	"image"
-	"image/color"
-	"image/draw"
-	"math"
-)
-
-type ImageFilter int
-
-const (
-	LinearFilter ImageFilter = iota
-	BilinearFilter
-	BicubicFilter
-)
-
-//see http://pippin.gimp.org/image_processing/chap_resampling.html
-func getColorLinear(img image.Image, x, y float64) color.Color {
-	return img.At(int(x), int(y))
-}
-
-func getColorBilinear(img image.Image, x, y float64) color.Color {
-	x0 := math.Floor(x)
-	y0 := math.Floor(y)
-	dx := x - x0
-	dy := y - y0
-
-	rt, gt, bt, at := img.At(int(x0), int(y0)).RGBA()
-	r0, g0, b0, a0 := float64(rt), float64(gt), float64(bt), float64(at)
-	rt, gt, bt, at = img.At(int(x0+1), int(y0)).RGBA()
-	r1, g1, b1, a1 := float64(rt), float64(gt), float64(bt), float64(at)
-	rt, gt, bt, at = img.At(int(x0+1), int(y0+1)).RGBA()
-	r2, g2, b2, a2 := float64(rt), float64(gt), float64(bt), float64(at)
-	rt, gt, bt, at = img.At(int(x0), int(y0+1)).RGBA()
-	r3, g3, b3, a3 := float64(rt), float64(gt), float64(bt), float64(at)
-
-	r := int(lerp(lerp(r0, r1, dx), lerp(r3, r2, dx), dy))
-	g := int(lerp(lerp(g0, g1, dx), lerp(g3, g2, dx), dy))
-	b := int(lerp(lerp(b0, b1, dx), lerp(b3, b2, dx), dy))
-	a := int(lerp(lerp(a0, a1, dx), lerp(a3, a2, dx), dy))
-	return color.RGBA{uint8(r >> 8), uint8(g >> 8), uint8(b >> 8), uint8(a >> 8)}
-}
-
-/**
--- LERP
--- /lerp/, vi.,n.
---
--- Quasi-acronym for Linear Interpolation, used as a verb or noun for
--- the operation. "Bresenham's algorithm lerps incrementally between the
--- two endpoints of the line." (From Jargon File (4.4.4, 14 Aug 2003)
-*/
-func lerp(v1, v2, ratio float64) float64 {
-	return v1*(1-ratio) + v2*ratio
-}
-
-func getColorCubicRow(img image.Image, x, y, offset float64) color.Color {
-	c0 := img.At(int(x), int(y))
-	c1 := img.At(int(x+1), int(y))
-	c2 := img.At(int(x+2), int(y))
-	c3 := img.At(int(x+3), int(y))
-	rt, gt, bt, at := c0.RGBA()
-	r0, g0, b0, a0 := float64(rt), float64(gt), float64(bt), float64(at)
-	rt, gt, bt, at = c1.RGBA()
-	r1, g1, b1, a1 := float64(rt), float64(gt), float64(bt), float64(at)
-	rt, gt, bt, at = c2.RGBA()
-	r2, g2, b2, a2 := float64(rt), float64(gt), float64(bt), float64(at)
-	rt, gt, bt, at = c3.RGBA()
-	r3, g3, b3, a3 := float64(rt), float64(gt), float64(bt), float64(at)
-	r, g, b, a := cubic(offset, r0, r1, r2, r3), cubic(offset, g0, g1, g2, g3), cubic(offset, b0, b1, b2, b3), cubic(offset, a0, a1, a2, a3)
-	return color.RGBA{uint8(r >> 8), uint8(g >> 8), uint8(b >> 8), uint8(a >> 8)}
-}
-
-func getColorBicubic(img image.Image, x, y float64) color.Color {
-	x0 := math.Floor(x)
-	y0 := math.Floor(y)
-	dx := x - x0
-	dy := y - y0
-	c0 := getColorCubicRow(img, x0-1, y0-1, dx)
-	c1 := getColorCubicRow(img, x0-1, y0, dx)
-	c2 := getColorCubicRow(img, x0-1, y0+1, dx)
-	c3 := getColorCubicRow(img, x0-1, y0+2, dx)
-	rt, gt, bt, at := c0.RGBA()
-	r0, g0, b0, a0 := float64(rt), float64(gt), float64(bt), float64(at)
-	rt, gt, bt, at = c1.RGBA()
-	r1, g1, b1, a1 := float64(rt), float64(gt), float64(bt), float64(at)
-	rt, gt, bt, at = c2.RGBA()
-	r2, g2, b2, a2 := float64(rt), float64(gt), float64(bt), float64(at)
-	rt, gt, bt, at = c3.RGBA()
-	r3, g3, b3, a3 := float64(rt), float64(gt), float64(bt), float64(at)
-	r, g, b, a := cubic(dy, r0, r1, r2, r3), cubic(dy, g0, g1, g2, g3), cubic(dy, b0, b1, b2, b3), cubic(dy, a0, a1, a2, a3)
-	return color.RGBA{uint8(r >> 8), uint8(g >> 8), uint8(b >> 8), uint8(a >> 8)}
-}
-
-func cubic(offset, v0, v1, v2, v3 float64) uint32 {
-	// offset is the offset of the sampled value between v1 and v2
-	return uint32(((((-7*v0+21*v1-21*v2+7*v3)*offset+
-		(15*v0-36*v1+27*v2-6*v3))*offset+
-		(-9*v0+9*v2))*offset + (v0 + 16*v1 + v2)) / 18.0)
-}
-
-func DrawImage(src image.Image, dest draw.Image, tr MatrixTransform, op draw.Op, filter ImageFilter) {
-	bounds := src.Bounds()
-	x0, y0, x1, y1 := float64(bounds.Min.X), float64(bounds.Min.Y), float64(bounds.Max.X), float64(bounds.Max.Y)
-	tr.TransformRectangle(&x0, &y0, &x1, &y1)
-	var x, y, u, v float64
-	var c1, c2, cr color.Color
-	var r, g, b, a, ia, r1, g1, b1, a1, r2, g2, b2, a2 uint32
-	var color color.RGBA
-	for x = x0; x < x1; x++ {
-		for y = y0; y < y1; y++ {
-			u = x
-			v = y
-			tr.InverseTransform(&u, &v)
-			if bounds.Min.X <= int(u) && bounds.Max.X > int(u) && bounds.Min.Y <= int(v) && bounds.Max.Y > int(v) {
-				c1 = dest.At(int(x), int(y))
-				switch filter {
-				case LinearFilter:
-					c2 = src.At(int(u), int(v))
-				case BilinearFilter:
-					c2 = getColorBilinear(src, u, v)
-				case BicubicFilter:
-					c2 = getColorBicubic(src, u, v)
-				}
-				switch op {
-				case draw.Over:
-					r1, g1, b1, a1 = c1.RGBA()
-					r2, g2, b2, a2 = c2.RGBA()
-					ia = M - a2
-					r = ((r1 * ia) / M) + r2
-					g = ((g1 * ia) / M) + g2
-					b = ((b1 * ia) / M) + b2
-					a = ((a1 * ia) / M) + a2
-					color.R = uint8(r >> 8)
-					color.G = uint8(g >> 8)
-					color.B = uint8(b >> 8)
-					color.A = uint8(a >> 8)
-					cr = color
-				default:
-					cr = c2
-				}
-				dest.Set(int(x), int(y), cr)
-			}
-		}
-	}
-}