我想從圖像文件中獲取數(shù)據(jù)并在 Unity 可以讀取的紋理中顯示該信息。我能夠?qū)⑾袼匦畔⒎湃胱止?jié)數(shù)組中，但屏幕上沒有任何顯示。我如何真正讓圖像顯示？ pcxFile = File.ReadAllBytes("Assets/5_ImageParser/bagit_icon.pcx"); int startPoint = 128; int height = 152; int width = 152; target = new Texture2D(height, width); for (var y = 0; y < height; y++) { for (var x = 0; x < width; x++) { timesDone ++; pixels[x, y] = new Color(pcxFile[startPoint], pcxFile[startPoint+1], pcxFile[startPoint+2]); startPoint += 4; target.SetPixel(x, y, pixels[x, y]); } } target.Apply(); target.EncodeToJPG();
1 回答
HUH函數(shù)
TA貢獻1836條經(jīng)驗 獲得超4個贊
好吧，（假設(shè)您正確獲取像素數(shù)據(jù)）您必須將創(chuàng)建的紋理分配給某些東西......
我會使用例如RawImage，因為它不需要 a Sprite（就像UI.Image組件一樣 - 另請參閱RawImage Manual）：
// Reference this in the Inspector
public RawImage image;
//...
pcxFile = File.ReadAllBytes("Assets/5_ImageParser/bagit_icon.pcx");
int startPoint = 128;
int height = 152;
int width = 152;
target = new Texture2D(height, width);
for (var y = 0; y < height; y++)
{
for (var x = 0; x < width; x++)
{
timesDone ++;
pixels[x, y] = new Color(pcxFile[startPoint], pcxFile[startPoint+1], pcxFile[startPoint+2]);
startPoint += 4;
target.SetPixel(x, y, pixels[x, y]);
}
}
target.Apply();
// You don't need this. Only if you are also going to save it locally
// as an actual *.jpg file or if you are going to
// e.g. upload it later via http POST
//
// In this case however you would have to asign the result
// to a variable in order to use it later
//var rawJpgBytes = target.EncodeToJPG();
// Assign the texture to the RawImage component
image.texture = target;
或者，與普通Image組件一起使用Sprite從您的紋理創(chuàng)建一個Sprite.Create：
// Reference this in the Inspector
public Image image;
// ...
var sprite = Sprite.Create(target, new Rect(0.0f, 0.0f, target.width, target.height), new Vector2(0.5f, 0.5f), 100.0f);
image.sprite = sprite;
提示 1
為了獲得正確的縱橫比，我通常使用一個小技巧：
為這個 RawImage 創(chuàng)建一個父對象
RectTransform在父級中設(shè)置所需的“最大尺寸”
RawImage在/旁邊Image（在子對象上）添加一個AspectRatioFitter（另見AspectRatioFitter Manual）并設(shè)置AspectMode為FitInParent.
現(xiàn)在在代碼中調(diào)整縱橫比（從紋理中獲?。?/p>
public RawImage image;
public AspectRatioFitter fitter;
//...
image.texture = target;
var ratio = target.width / target.height;
fitter.aspectRatio = ratio;
提示 2對所有像素調(diào)用一次比重復
調(diào)用“便宜” ：SetPixelsSetPixel
// ...
startPoint = 0;
pixels = new Color[width * height]();
for(int i = 0; i < pixels.Length; i++)
{
pixels[i] = new Color(pcxFile[startPoint], pcxFile[startPoint+1], pcxFile[startPoint+2]);
startPoint += 4;
}
target.SetPixels(pixels);
target.Apply();
// ...
（我不知道您的pcx格式究竟是如何工作的，但也許您甚至可以使用LoadRawTextureData
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