1 files changed, 0 insertions, 168 deletions
diff --git a/usr/rsc/draw/arith.go b/usr/rsc/draw/arith.go
deleted file mode 100644
index 4c0996597..000000000
--- a/usr/rsc/draw/arith.go
+++ /dev/null
@@ -1,168 +0,0 @@
-// Copyright 2009 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 draw
-
-// A Point is an X, Y coordinate pair.
-type Point struct {
-	X, Y int;
-}
-
-// ZP is the zero Point.
-var ZP Point
-
-// A Rectangle contains the Points with Min.X <= X < Max.X, Min.Y <= Y < Max.Y.
-type Rectangle struct {
-	Min, Max Point;
-}
-
-// ZR is the zero Rectangle.
-var ZR Rectangle
-
-// Pt is shorthand for Point{X, Y}.
-func Pt(X, Y int) Point {
-	return Point{X, Y}
-}
-
-// Rect is shorthand for Rectangle{Pt(x0, y0), Pt(x1, y1)}.
-func Rect(x0, y0, x1, y1 int) Rectangle {
-	return Rectangle{Point{x0,y0}, Point{x1,y1}}
-}
-
-// Rpt is shorthand for Rectangle{min, max}.
-func Rpt(min, max Point) Rectangle {
-	return Rectangle{min, max}
-}
-
-// Add returns the sum of p and q: Pt(p.X+q.X, p.Y+q.Y).
-func (p Point) Add(q Point) Point {
-	return Point{p.X+q.X, p.Y+q.Y}
-}
-
-// Sub returns the difference of p and q: Pt(p.X-q.X, p.Y-q.Y).
-func (p Point) Sub(q Point) Point {
-	return Point{p.X-q.X, p.Y-q.Y}
-}
-
-// Mul returns p scaled by k: Pt(p.X*k p.Y*k).
-func (p Point) Mul(k int) Point {
-	return Point{p.X*k, p.Y*k}
-}
-
-// Div returns p divided by k: Pt(p.X/k, p.Y/k).
-func (p Point) Div(k int) Point {
-	return Point{p.X/k, p.Y/k}
-}
-
-// Eq returns true if p and q are equal.
-func (p Point) Eq(q Point) bool {
-	return p.X == q.X && p.Y == q.Y
-}
-
-// Inset returns the rectangle r inset by n: Rect(r.Min.X+n, r.Min.Y+n, r.Max.X-n, r.Max.Y-n).
-func (r Rectangle) Inset(n int) Rectangle {
-	return Rectangle{Point{r.Min.X+n, r.Min.Y+n}, Point{r.Max.X-n, r.Max.Y-n}}
-}
-
-// Add returns the rectangle r translated by p: Rpt(r.Min.Add(p), r.Max.Add(p)).
-func (r Rectangle) Add(p Point) Rectangle {
-	return Rectangle{r.Min.Add(p), r.Max.Add(p)}
-}
-
-// Sub returns the rectangle r translated by -p: Rpt(r.Min.Sub(p), r.Max.Sub(p)).
-func (r Rectangle) Sub(p Point) Rectangle {
-	return Rectangle{r.Min.Sub(p), r.Max.Sub(p)}
-}
-
-// Canon returns a canonical version of r: the returned rectangle
-// has Min.X <= Max.X and Min.Y <= Max.Y.
-func (r Rectangle) Canon() Rectangle {
-	if r.Max.X < r.Min.X {
-		r.Max.X = r.Min.X
-	}
-	if r.Max.Y < r.Min.Y {
-		r.Max.Y = r.Min.Y
-	}
-	return r;
-}
-
-// Overlaps returns true if r and r1 cross; that is, it returns true if they share any point.
-func (r Rectangle) Overlaps(r1 Rectangle) bool {
-	return r.Min.X < r1.Max.X && r1.Min.X < r.Max.X
-		&& r.Min.Y < r1.Max.Y && r1.Min.Y < r.Max.Y
-}
-
-// Empty retruns true if r contains no points.
-func (r Rectangle) Empty() bool {
-	return r.Max.X <= r.Min.X || r.Max.Y <= r.Min.Y
-}
-
-// InRect returns true if all the points in r are also in r1.
-func (r Rectangle) In(r1 Rectangle) bool {
-	if r.Empty() {
-		return true
-	}
-	if r1.Empty() {
-		return false
-	}
-	return r1.Min.X <= r.Min.X && r.Max.X <= r1.Max.X
-		&& r1.Min.Y <= r.Min.Y && r.Max.Y <= r1.Max.Y
-}
-
-// Combine returns the smallest rectangle containing all points from r and from r1.
-func (r Rectangle) Combine(r1 Rectangle) Rectangle {
-	if r.Empty() {
-		return r1
-	}
-	if r1.Empty() {
-		return r
-	}
-	if r.Min.X > r1.Min.X {
-		r.Min.X = r1.Min.X
-	}
-	if r.Min.Y > r1.Min.Y {
-		r.Min.Y = r1.Min.Y
-	}
-	if r.Max.X < r1.Max.X {
-		r.Max.X = r1.Max.X
-	}
-	if r.Max.Y < r1.Max.Y {
-		r.Max.Y = r1.Max.Y
-	}
-	return r
-}
-
-// Clip returns the largest rectangle containing only points shared by r and r1.
-func (r Rectangle) Clip(r1 Rectangle) Rectangle {
-	if r.Empty() {
-		return r
-	}
-	if r1.Empty() {
-		return r1
-	}
-	if r.Min.X < r1.Min.X {
-		r.Min.X = r1.Min.X
-	}
-	if r.Min.Y < r1.Min.Y {
-		r.Min.Y = r1.Min.Y
-	}
-	if r.Max.X > r1.Max.X {
-		r.Max.X = r1.Max.X
-	}
-	if r.Max.Y > r1.Max.Y {
-		r.Max.Y = r1.Max.Y
-	}
-	return r;
-}
-
-// Dx returns the width of the rectangle r: r.Max.X - r.Min.X.
-func (r Rectangle) Dx() int {
-	return r.Max.X - r.Min.X
-}
-
-// Dy returns the width of the rectangle r: r.Max.Y - r.Min.Y.
-func (r Rectangle) Dy() int {
-	return r.Max.Y - r.Min.Y
-}
-