mirror of
https://github.com/hajimehoshi/ebiten.git
synced 2024-11-10 21:17:27 +01:00
124 lines
3.3 KiB
Go
124 lines
3.3 KiB
Go
// Copyright 2013 Hajime Hoshi
|
|
//
|
|
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
|
// of this software and associated documentation files (the "Software"), to deal
|
|
// in the Software without restriction, including without limitation the rights
|
|
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
|
// copies of the Software, and to permit persons to whom the Software is
|
|
// furnished to do so, subject to the following conditions:
|
|
//
|
|
// The above copyright notice and this permission notice shall be included in
|
|
// all copies or substantial portions of the Software.
|
|
//
|
|
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
|
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
|
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
|
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
|
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
|
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
|
|
// SOFTWARE.
|
|
|
|
package monochrome
|
|
|
|
import (
|
|
"github.com/hajimehoshi/go.ebiten"
|
|
"github.com/hajimehoshi/go.ebiten/graphics"
|
|
"github.com/hajimehoshi/go.ebiten/graphics/matrix"
|
|
"image"
|
|
"image/color"
|
|
_ "image/png"
|
|
"os"
|
|
)
|
|
|
|
type Monochrome struct {
|
|
ebitenTexture graphics.Texture
|
|
ch chan bool
|
|
colorMatrix matrix.Color
|
|
geometryMatrix matrix.Geometry
|
|
}
|
|
|
|
func New() *Monochrome {
|
|
return &Monochrome{
|
|
ch: make(chan bool),
|
|
colorMatrix: matrix.IdentityColor(),
|
|
geometryMatrix: matrix.IdentityGeometry(),
|
|
}
|
|
}
|
|
|
|
func (game *Monochrome) Init(tf graphics.TextureFactory) {
|
|
file, err := os.Open("images/ebiten.png")
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
defer file.Close()
|
|
|
|
img, _, err := image.Decode(file)
|
|
if err != nil {
|
|
panic(err)
|
|
}
|
|
if game.ebitenTexture, err = tf.NewTextureFromImage(img); err != nil {
|
|
panic(err)
|
|
}
|
|
|
|
go game.update()
|
|
}
|
|
|
|
func mean(a, b matrix.Color, k float64) matrix.Color {
|
|
dim := a.Dim()
|
|
result := matrix.Color{}
|
|
for i := 0; i < dim-1; i++ {
|
|
for j := 0; j < dim; j++ {
|
|
result.Elements[i][j] =
|
|
a.Elements[i][j]*(1-k) +
|
|
b.Elements[i][j]*k
|
|
}
|
|
}
|
|
return result
|
|
}
|
|
|
|
func (game *Monochrome) update() {
|
|
colorI := matrix.IdentityColor()
|
|
colorMonochrome := matrix.Monochrome()
|
|
for {
|
|
for i := 0; i < ebiten.FPS; i++ {
|
|
<-game.ch
|
|
rate := float64(i) / float64(ebiten.FPS)
|
|
game.colorMatrix = mean(colorI, colorMonochrome, rate)
|
|
game.ch <- true
|
|
}
|
|
for i := 0; i < ebiten.FPS; i++ {
|
|
<-game.ch
|
|
game.colorMatrix = colorMonochrome
|
|
game.ch <- true
|
|
}
|
|
for i := 0; i < ebiten.FPS; i++ {
|
|
<-game.ch
|
|
rate := float64(i) / float64(ebiten.FPS)
|
|
game.colorMatrix = mean(colorMonochrome, colorI, rate)
|
|
game.ch <- true
|
|
}
|
|
for i := 0; i < ebiten.FPS; i++ {
|
|
<-game.ch
|
|
game.colorMatrix = colorI
|
|
game.ch <- true
|
|
}
|
|
}
|
|
}
|
|
|
|
func (game *Monochrome) Update(context ebiten.GameContext) {
|
|
game.ch <- true
|
|
<-game.ch
|
|
|
|
game.geometryMatrix = matrix.IdentityGeometry()
|
|
tx := context.ScreenWidth()/2 - game.ebitenTexture.Width()/2
|
|
ty := context.ScreenHeight()/2 - game.ebitenTexture.Height()/2
|
|
game.geometryMatrix.Translate(float64(tx), float64(ty))
|
|
}
|
|
|
|
func (game *Monochrome) Draw(g graphics.Context) {
|
|
g.Fill(&color.RGBA{R: 128, G: 128, B: 255, A: 255})
|
|
|
|
g.DrawTexture(game.ebitenTexture.ID(),
|
|
game.geometryMatrix, game.colorMatrix)
|
|
}
|