我使用的图像查看和使用layerDrawable绘制覆盖图像。 我已经使用了两个位图原件和MYBITMAP。 放大后,我在正确的位置,不能画圈子,它画在不同的位置。
I am using Image view and drawing overlay image using layerDrawable. I have used two bitmaps original and myBitmap. After zoom I am not able draw circle in correct location, it's drawn in different location.
这是在code我使用,
This is the code I am using,
ImageView view = (ImageView) findViewById(R.id.imageView);
view.setOnTouchListener(this);
Options options = new BitmapFactory.Options();
options.inScaled = false;
original = BitmapFactory.decodeResource(getResources(), R.drawable.mainscreen,options);
original= getResizedBitmap(original, width, 200);
myBitmap = func(original);
Resources r = getResources();
layers = new Drawable[2];
layers[0] = new BitmapDrawable(original);
layers[1] = new BitmapDrawable(myBitmap);
LayerDrawable layerDrawable = new LayerDrawable(layers);
view.setImageDrawable(layerDrawable);
bitmap = Bitmap.createBitmap(width, 200, Config.ARGB_8888);
pcanvas = new Canvas();
pcanvas.setBitmap(bitmap);
pcanvas.drawBitmap(grayScale, 0, 0, null);
public boolean onTouch(View v, MotionEvent rawEvent) {
WrapMotionEvent event = WrapMotionEvent.wrap(rawEvent);
// ...
ImageView view = (ImageView) v;
// Dump touch event to log
// dumpEvent(event);
if (isZoomRequired == false)
{
x = (int) rawEvent.getX();
y = (int) rawEvent.getY();
r = SettingsActivity.brushsize;
pcanvas.drawCircle(x, y, r, mPaint);
layers[1] = new BitmapDrawable(bitmap);
LayerDrawable layerDrawable = new LayerDrawable(layers);
view.setImageDrawable(layerDrawable);
}
else
{
// Handle touch events here...
switch (event.getAction() & MotionEvent.ACTION_MASK) {
case MotionEvent.ACTION_DOWN:
savedMatrix.set(matrix);
start.set(event.getX(), event.getY());
Log.d(TAG, "mode=DRAG");
mode = DRAG;
break;
case MotionEvent.ACTION_POINTER_DOWN:
oldDist = spacing(event);
Log.d(TAG, "oldDist=" + oldDist);
if (oldDist > 10f) {
savedMatrix.set(matrix);
midPoint(mid, event);
mode = ZOOM;
Log.d(TAG, "mode=ZOOM");
}
break;
case MotionEvent.ACTION_UP:
case MotionEvent.ACTION_POINTER_UP:
mode = NONE;
Log.d(TAG, "mode=NONE");
break;
case MotionEvent.ACTION_MOVE:
if (mode == DRAG) {
// ...
matrix.set(savedMatrix);
matrix.postTranslate(event.getX() - start.x,
event.getY() - start.y);
}
else if (mode == ZOOM) {
float newDist = spacing(event);
Log.d(TAG, "newDist=" + newDist);
if (newDist > 10f) {
matrix.set(savedMatrix);
float scale = newDist / oldDist;
matrix.postScale(scale, scale, mid.x, mid.y);
}
}
break;
}
view.setImageMatrix(matrix);
}
return true; // indicate event was handled
}
请帮我。我需要绘制圆的正确位置变焦之后。
Kindly help me. I need to draw circle in correct location after zoom.
任何帮助将是AP preciated。
Any help would be appreciated.
你能不能添加图像,显示它是什么,你正在试图获得和PIC显示你会得到什么呢?
Could you add images showing what it is you're trying to get and a pic showing what you get instead?
有一点要记住的是,某些操作使用不同的零点y轴。我已经在一个surfaceview,其中我不得不计算,因为一次操作中使用的视图的顶部为y = 0和矩阵操作中使用的视图的底部为y = 0的修正系数打击这一对矩阵运算,所以实际的矩阵运算需要的是这样的:。matrixY =(totalHeightY - Yposition)
One thing to keep in mind is that certain operations use a different zero point for the y axis. I've been fighting this on matrix operations on a surfaceview, where I've had to calculate a correction factor because one operation used the top of the view as y=0 and the matrix operation used the bottom of the view as y=0, so the actual matrix operation needed something like: matrixY = (totalHeightY - Yposition).
但显示你所期望的,你在说什么,将有助于诊断问题,速度比运行,并通过您的code工作:)
But showing what you expect and what you're getting would help diagnose the problem quicker than running and working through your code :)