From 7ea4e19f588a1e86cca9ab92f0251007dcadb77b Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Fri, 26 Dec 2014 04:02:34 +0900
Subject: [PATCH] Remove methods IsIdentity

---
 colormatrix.go         |  5 -----
 colormatrix_test.go    | 14 --------------
 geometrymatrix.go      |  5 -----
 geometrymatrix_test.go |  9 ---------
 4 files changed, 33 deletions(-)

diff --git a/colormatrix.go b/colormatrix.go
index eb75c541c..edbfd33e2 100644
--- a/colormatrix.go
+++ b/colormatrix.go
@@ -60,11 +60,6 @@ func (c *ColorMatrix) Concat(other ColorMatrix) {
 	*c = result
 }
 
-// IsIdentity returns a boolean indicating whether the color matrix is an identity.
-func (c *ColorMatrix) IsIdentity() bool {
-	return isIdentity(c)
-}
-
 func (c *ColorMatrix) setElement(i, j int, element float64) {
 	c.es[i][j] = element
 }
diff --git a/colormatrix_test.go b/colormatrix_test.go
index 3fc2b16d8..86837f362 100644
--- a/colormatrix_test.go
+++ b/colormatrix_test.go
@@ -13,17 +13,3 @@
 // limitations under the License.
 
 package ebiten_test
-
-import (
-	. "."
-	"testing"
-)
-
-func TestColorIdentity(t *testing.T) {
-	m := NewColorMatrix()
-	got := m.IsIdentity()
-	want := true
-	if want != got {
-		t.Errorf("matrix.IsIdentity() = %t, want %t", got, want)
-	}
-}
diff --git a/geometrymatrix.go b/geometrymatrix.go
index fccf5bdee..7c30059db 100644
--- a/geometrymatrix.go
+++ b/geometrymatrix.go
@@ -53,11 +53,6 @@ func (g *GeometryMatrix) Concat(other GeometryMatrix) {
 	*g = result
 }
 
-// IsIdentity returns a boolean indicating whether the geometry matrix is an identity.
-func (g *GeometryMatrix) IsIdentity() bool {
-	return isIdentity(g)
-}
-
 func (g *GeometryMatrix) setElement(i, j int, element float64) {
 	g.es[i][j] = element
 }
diff --git a/geometrymatrix_test.go b/geometrymatrix_test.go
index e49d5c9f5..5c38c7f46 100644
--- a/geometrymatrix_test.go
+++ b/geometrymatrix_test.go
@@ -19,15 +19,6 @@ import (
 	"testing"
 )
 
-func TestGeometryIdentity(t *testing.T) {
-	m := NewGeometryMatrix()
-	got := m.IsIdentity()
-	want := true
-	if want != got {
-		t.Errorf("matrix.IsIdentity() = %t, want %t", got, want)
-	}
-}
-
 func TestGeometryConcat(t *testing.T) {
 	matrix1 := ScaleGeometry(2, 2)
 	matrix2 := TranslateGeometry(1, 1)