我正在尝试创建一个拼图益智游戏,我想知道在不使用面具的情况下创建拼图的替代方法.目前我通过拍摄完整的图像拼图碎片,将图像分成四个部分(假设拼图是2×2),然后存储并对每个部分应用遮罩.它看起来像下面
// create standard puzzle pieces
arryPieceEndPos = new int[mCols][mRows];
arryPieceImg = new Bitmap[mCols * mRows];
arryIsPieceLocked = new boolean[mCols * mRows];
int pos = 0;
for (int c = 0; c < mCols; c++) {
for (int r = 0; r < mRows; r++) {
arryPieceImg[pos] = Bitmap.createBitmap(mBitmap,c * mPieceWidth,r * mPieceHeight,mPieceWidth,mPieceHeight);
arryIsPieceLocked[pos] = false;
arryPieceEndPos[c][r] = pos;
pos++;
}
}
然后我使用辅助方法将遮罩应用于每个部分
private Bitmap maskMethod(Bitmap bmpOriginal,Bitmap bmpMask) {
// adjust mask bitmap if size is not the size of the puzzle piece
if (bmpMask.getHeight() != mPieceHeight ||
bmpMask.getWidth() != mPieceWidth) {
Log.e("TEST","Resize Error :: H (mask): " + bmpMask.getHeight() + " // W (mask): " +
bmpMask.getWidth());
Log.d("TEST","Resize Error :: H (norm): " + mPieceHeight + " // W (norm): " +
mPieceWidth);
}
Canvas canvas = new Canvas();
Bitmap combine = Bitmap.createBitmap(bmpOriginal.getWidth(),bmpOriginal.getHeight(),Bitmap.Config.ARGB_8888);
canvas.setBitmap(combine);
Paint paint = new Paint();
paint.setFilterBitmap(false);
canvas.drawBitmap(bmpOriginal,paint);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.DST_IN));
canvas.drawBitmap(bmpMask,paint);
paint.setXfermode(null);
return combine;
}
我看过这篇文章>但是,如果没有掩码,这不会以编程方式生成片段.任何人都可以提供如何实现这一目标的代码示例吗？我唯一的线索是我应该使用Path,但是,我仍然不确定如何.提前致谢！
最佳答案
拼图是一个非常复杂的创建视图,但我可以帮助您了解如何使用路径.以下是开发者网站的链接：http://developer.android.com/reference/android/graphics/Path.html
看看这个链接.我为你开始做了一件小事.你需要弄清楚的一件事是如何从路径中切出一个小圆圈,这是我不知道的.我认为你必须研究剪裁以使你的路径遵循一个圆圈(你也可以做剪辑以创建一个圆形外面的圆圈,我之前没有做过剪裁).
private Bitmap getPuzzleBitmap(Bitmap bitmap)
{
Bitmap output = Bitmap.createBitmap(bitmap.getWidth(),bitmap.getHeight(),Bitmap.Config.ARGB_8888);
Canvas canvas = new Canvas(output);
final int color = 0xff424242;
final Paint paint = new Paint();
final Rect rect = new Rect(0,bitmap.getWidth(),bitmap.getHeight());
calculatePuzzlePath(bitmap.getWidth(),bitmap.getHeight());
paint.setAntiAlias(true);
canvas.drawARGB(0,0);
paint.setColor(color);
canvas.drawPath(puzzlePath,paint);
paint.setXfermode(new PorterDuffXfermode(PorterDuff.Mode.SRC_IN));
canvas.drawBitmap(bitmap,rect,paint);
return output;
}
private void calculatePuzzlePath(int width,int height)
{
float radius = (height / 2) - 5;
float smallRadius = radius / 3;
radius -= smallRadius * 2;
float centerX = width/2;
float centerY = height/2;
puzzlePath = new Path();
// Bottom right
puzzlePath.moveTo(centerX + radius,centerY + radius);
// Top right
puzzlePath.lineTo(centerX + radius,centerY - radius);
// Center top
puzzlePath.lineTo(centerX,centerY - radius);
// Add outside circle to center top
puzzlePath.addCircle(centerX,centerY - radius - ((radius / 3) / 2),radius / 3,Path.Direction.CCW);
// Top left
puzzlePath.lineTo(centerX - radius,centerY - radius);
// Bottom left
puzzlePath.lineTo(centerX - radius,centerY + radius);
//Bottom right
puzzlePath.lineTo(centerX + radius,centerY + radius);
}
我希望这足以开始这个.
祝好运！
