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imagedump.go
39 lines (35 loc) · 1.07 KB
/
imagedump.go
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// Copyright 2021 Google LLC
//
// 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 dump
import (
"image/color"
"github.com/hajimehoshi/ebiten/v2"
)
func getPixelsRGBA(img *ebiten.Image) ([]byte, error) {
bounds := img.Bounds()
width, height := bounds.Max.X-bounds.Min.X, bounds.Max.Y-bounds.Min.Y
pix := make([]byte, 4*width*height)
p := 0
for y := bounds.Min.Y; y < bounds.Max.Y; y++ {
for x := bounds.Min.X; x < bounds.Max.X; x++ {
c := img.At(x, y).(color.RGBA)
pix[p] = c.R
pix[p+1] = c.G
pix[p+2] = c.B
pix[p+3] = c.A
p += 4
}
}
return pix, nil
}