https://github.com/nekocode/cxi

批处理 mask 位图，转换为带 alpha 的 png 图片
https://github.com/nekocode/cxi

graphics tool

Last synced: 3 months ago
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批处理 mask 位图，转换为带 alpha 的 png 图片

• Host: GitHub
• URL: https://github.com/nekocode/cxi
• Owner: nekocode
• Created: 2015-09-09T06:54:46.000Z (almost 10 years ago)
• Default Branch: master
• Last Pushed: 2015-09-09T06:56:00.000Z (almost 10 years ago)
• Last Synced: 2025-02-09T13:31:54.563Z (5 months ago)
• Topics: graphics, tool
• Language: C++
• Homepage:
• Size: 5.26 MB
• Stars: 1
• Watchers: 3
• Forks: 0
• Open Issues: 0
• Metadata Files:
  • Readme: README.md

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README

        
# README

批处理当前目录下所有 `带遮罩图的 24bit 图片` *（常见于比较旧的游戏资源图片）*  转换为 `带 alpha 通道的 32bit png 格式图片`

### kernel algorithm

```c++

CxImage mask(CxImage input_Image, BOOL Negative)

{

	if(!input_Image.IsValid())

		return 0;

	CxImage basic,alpha;

	RECT rect;

	long width=input_Image.GetWidth()/2,

		height=input_Image.GetHeight();

	rect.top = 0;rect.left = 0;

	rect.right = width;

	rect.bottom = height;

	input_Image.Crop(rect,&basic);

	rect.top = 0;rect.left = width;

	rect.right = width*2;

	rect.bottom = height;

	input_Image.Crop(rect,&alpha);

	//在这里创建遮罩层

	if(!basic.AlphaIsValid())

		basic.AlphaCreate();           //创建透明通道

	if(Negative)

		alpha.Negative();              //遮罩层反色处理

	RGBQUAD rgb;

	for(int y=0;y