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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -0,0 +1,81 @@ | ||
| package render | ||
|
|
||
| import ( | ||
| "fmt" | ||
| "github.com/nfnt/resize" | ||
| "image" | ||
| "image/draw" | ||
| "image/jpeg" | ||
| "os" | ||
| "testing" | ||
| ) | ||
|
|
||
| func TestImg(t *testing.T) { | ||
| // 打开背景图片 | ||
| backgroundFile, err := os.Open("plain.jpg") | ||
| if err != nil { | ||
| fmt.Println("Error: Unable to open background image.") | ||
| return | ||
| } | ||
| defer backgroundFile.Close() | ||
|
|
||
| // 解码背景图片 | ||
| backgroundImg, err := jpeg.Decode(backgroundFile) | ||
| if err != nil { | ||
| fmt.Println("Error: Unable to decode background image.") | ||
| return | ||
| } | ||
|
|
||
| // 打开素材图片 | ||
| overlayFile, err := os.Open("cat.jpg") | ||
| if err != nil { | ||
| fmt.Println("Error: Unable to open overlay image.") | ||
| return | ||
| } | ||
| defer overlayFile.Close() | ||
|
|
||
| // 解码素材图片 | ||
| overlayImg, err := jpeg.Decode(overlayFile) | ||
| if err != nil { | ||
| fmt.Println("Error: Unable to decode overlay image.") | ||
| return | ||
| } | ||
|
|
||
| // 获取背景图的大小 | ||
| bgBounds := backgroundImg.Bounds() | ||
|
|
||
| // 创建一个新的 RGBA 图像用于合成 | ||
| resultImg := image.NewRGBA(bgBounds) | ||
|
|
||
| // 将背景图绘制到新图像上 | ||
| draw.Draw(resultImg, bgBounds, backgroundImg, image.Point{0, 0}, draw.Src) | ||
|
|
||
| // 素材图的位置 | ||
| offset := image.Pt(100, 100) // 可以根据需要调整位置 | ||
|
|
||
| // 获取素材图的大小 | ||
| scaledWidth := 1000 | ||
| scaledHeight := 1000 | ||
|
|
||
| // 缩放 | ||
| m := resize.Resize(uint(scaledWidth), uint(scaledHeight), overlayImg, resize.Bilinear) | ||
|
|
||
| // 将素材图绘制到新图像的指定位置上 | ||
| draw.Draw(resultImg, image.Rect(offset.X, offset.Y, offset.X+scaledWidth, offset.Y+scaledHeight), m, image.Point{0, 0}, draw.Over) | ||
|
|
||
| // 保存结果图像到文件 | ||
| outputFile, err := os.Create("result.jpg") | ||
| if err != nil { | ||
| fmt.Println("Error: Unable to create result image.") | ||
| return | ||
| } | ||
| defer outputFile.Close() | ||
|
|
||
| // 将合成的图像编码为 JPEG 并写入文件 | ||
| if err := jpeg.Encode(outputFile, resultImg, nil); err != nil { | ||
| fmt.Println("Error: Unable to encode result image.") | ||
| return | ||
| } | ||
|
|
||
| fmt.Println("Image composition complete.") | ||
| } |
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