ebiten/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.
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package ebiten_test
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import (
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. "github.com/hajimehoshi/ebiten"
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"testing"
)
func TestColorInit(t *testing.T) {
var m ColorM
for i := 0; i < ColorMDim-1; i++ {
for j := 0; j < ColorMDim; j++ {
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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)
}
}
}
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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)
}
}
}
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m.Add(m)
for i := 0; i < ColorMDim-1; i++ {
for j := 0; j < ColorMDim; j++ {
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got := m.Element(i, j)
want := 0.0
if i == j {
want = 2
}
if want != got {
t.Errorf("m.Element(%d, %d) = %f, want %f", i, j, got, want)
}
}
}
}
func TestColorAssign(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)
}
}
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func TestColorTranslate(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 TestColorMonochrome(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)
}
}
}
}