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colorm_test.go
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// Copyright 2014 Hajime Hoshi
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package ebiten_test
import (
. "github.com/hajimehoshi/ebiten"
"testing"
)
func TestColorMInit(t *testing.T) {
var m ColorM
for i := 0; i < ColorMDim-1; i++ {
for j := 0; j < ColorMDim; j++ {
got := m.Element(i, j)
want := 0.0
if i == j {
want = 1
}
if want != got {
t.Errorf("m.Element(%d, %d) = %f, want %f", i, j, got, want)
}
}
}
m.SetElement(0, 0, 1)
for i := 0; i < ColorMDim-1; i++ {
for j := 0; j < ColorMDim; j++ {
got := m.Element(i, j)
want := 0.0
if i == j {
want = 1
}
if want != got {
t.Errorf("m.Element(%d, %d) = %f, want %f", i, j, got, want)
}
}
}
}
func TestColorMAssign(t *testing.T) {
m := ColorM{}
m.SetElement(0, 0, 1)
m2 := m
m.SetElement(0, 0, 0)
got := m2.Element(0, 0)
want := 1.0
if want != got {
t.Errorf("m2.Element(%d, %d) = %f, want %f", 0, 0, got, want)
}
}
func TestColorMTranslate(t *testing.T) {
expected := [4][5]float64{
{1, 0, 0, 0, 0.5},
{0, 1, 0, 0, 1.5},
{0, 0, 1, 0, 2.5},
{0, 0, 0, 1, 3.5},
}
m := ColorM{}
m.Translate(0.5, 1.5, 2.5, 3.5)
for i := 0; i < 4; i++ {
for j := 0; j < 5; j++ {
got := m.Element(i, j)
want := expected[i][j]
if want != got {
t.Errorf("m.Element(%d, %d) = %f, want %f", i, j, got, want)
}
}
}
}
func TestColorMScale(t *testing.T) {
expected := [4][5]float64{
{0.5, 0, 0, 0, 0},
{0, 1.5, 0, 0, 0},
{0, 0, 2.5, 0, 0},
{0, 0, 0, 3.5, 0},
}
m := ColorM{}
m.Scale(0.5, 1.5, 2.5, 3.5)
for i := 0; i < 4; i++ {
for j := 0; j < 5; j++ {
got := m.Element(i, j)
want := expected[i][j]
if want != got {
t.Errorf("m.Element(%d, %d) = %f, want %f", i, j, got, want)
}
}
}
}
func TestColorMTranslateAndScale(t *testing.T) {
expected := [4][5]float64{
{1, 0, 0, 0, 0},
{0, 1, 0, 0, 0},
{0, 0, 1, 0, 0},
{0, 0, 0, 0.5, 0.5},
}
m := ColorM{}
m.Translate(0, 0, 0, 1)
m.Scale(1, 1, 1, 0.5)
for i := 0; i < 4; i++ {
for j := 0; j < 5; j++ {
got := m.Element(i, j)
want := expected[i][j]
if want != got {
t.Errorf("m.Element(%d, %d) = %f, want %f", i, j, got, want)
}
}
}
}
func TestColorMMonochrome(t *testing.T) {
expected := [4][5]float64{
{0.2990, 0.5870, 0.1140, 0, 0},
{0.2990, 0.5870, 0.1140, 0, 0},
{0.2990, 0.5870, 0.1140, 0, 0},
{0, 0, 0, 1, 0},
}
m := Monochrome()
for i := 0; i < 4; i++ {
for j := 0; j < 5; j++ {
got := m.Element(i, j)
want := expected[i][j]
if want != got {
t.Errorf("m.Element(%d, %d) = %f, want %f", i, j, got, want)
}
}
}
}
func TestColorMConcatSelf(t *testing.T) {
expected := [4][5]float64{
{30, 40, 30, 25, 30},
{40, 54, 43, 37, 37},
{30, 43, 51, 39, 34},
{25, 37, 39, 46, 36},
}
m := ColorM{}
for i := 0; i < 4; i++ {
for j := 0; j < 5; j++ {
m.SetElement(i, j, float64((i+j)%5+1))
}
}
m.Concat(m)
for i := 0; i < 4; i++ {
for j := 0; j < 5; j++ {
got := m.Element(i, j)
want := expected[i][j]
if want != got {
t.Errorf("m.Element(%d, %d) = %f, want %f", i, j, got, want)
}
}
}
}