Question

I m trying to animate an image (used as background image but it doesn t really matter) in such a way that it will move from left to right but in a cyclic way. For example, if the image size is exactly as the view size, once the most right column of pixels exceeded the right edge, it will appear on the most left side of the view.

我对采取这种做法的几种方法进行了思考,但所有这些方法对我来说都过于复杂,我确信,这样做还有更多的“核心”方法。

Thanks, Lior.

Answer 1

您能否使用<代码>canvas.drawBitmap(资料来源:Rectangle,outputRectangle,null),将一部分从光线图背景中删除? 这是一种类似的方法,用于绘制一张比图,但是,在给背景地带的边缘点打上前,你会给来源的Rectangle的左侧和正确价值增加一el。

Answer 2

如果<代码>Bitmap和ImageView在纸浆中是完全相同的大小,那么你可以人工将纸浆放在你想要的周围。

int pixels[];
bitmap.getPixels(pixels, 0, bitmap.getWidth(), 0, 0, bitmap.getWidth(), bitmap.getHeight());
shiftPixels(pixels, width, height);
bitmap.setPixels(pixels, 0, bitmap.getWidth(), 0, 0, bitmap.getWidth(), bitmap.setWidth());

在<代码>中,Pixels简单地提供了原始轨道图的复印件,但在复制该图纸时,则适用直线转换成像。与此类似(未经测试的假体编码);

void shiftPixels(int inPixels[], int bitmapHeight, int nPixHorizShift)
{

    int shift = bitmapHeight * nPixHorizShift;
    int outPixels[inPixels.size()];

    for i = 1:pixels.size()
       outPixels[(i + shift) % outPixels.size()] = inPixels[i];

    inPixels = outPixels;
}

友情链接