private void computeCoverAndKeepRect(final Rect visibleRect, Rect coverRect, Rect keepRect) {
visibleRect.copyTo(coverRect);
visibleRect.copyTo(keepRect);
// If we cover more that the actual viewport we can be smart about which tiles we choose to
// render.
if (mCoverAreaMultiplier > 1) {
// The initial cover area covers equally in each direction, according to the
// coverAreaMultiplier.
coverRect.inflate(
(int) (visibleRect.getWidth() * (mCoverAreaMultiplier - 1) / 2),
(int) (visibleRect.getHeight() * (mCoverAreaMultiplier - 1) / 2));
coverRect.copyTo(keepRect);
if (mPendingTrajectoryVector.getX() != 0 || mPendingTrajectoryVector.getY() != 0) {
// A null trajectory vector (no motion) means that tiles for the coverArea will be created.
// A non-null trajectory vector will shrink the covered rect to visibleRect plus its
// expansion from its
// center toward the cover area edges in the direction of the given vector.
// E.g. if visibleRect == (10,10)5x5 and coverAreaMultiplier == 3.0:
// a (0,0) trajectory vector will create tiles intersecting (5,5)15x15,
// a (1,0) trajectory vector will create tiles intersecting (10,10)10x5,
// and a (1,1) trajectory vector will create tiles intersecting (10,10)10x10.
// Multiply the vector by the distance to the edge of the cover area.
float trajectoryVectorMultiplier = (mCoverAreaMultiplier - 1) / 2;
// Unite the visible rect with a "ghost" of the visible rect moved in the direction of the
// trajectory vector.
visibleRect.copyTo(coverRect);
coverRect.offset(
(int) (coverRect.getWidth() * mTrajectoryVector.getX() * trajectoryVectorMultiplier),
(int) (coverRect.getHeight() * mTrajectoryVector.getY() * trajectoryVectorMultiplier));
coverRect.composite(visibleRect);
}
assert (keepRect.contains(coverRect));
}
adjustForContentsRect(coverRect);
// The keep rect is an inflated version of the cover rect, inflated in tile dimensions.
keepRect.composite(coverRect);
keepRect.inflate(mTileSize.getWidth() / 2, mTileSize.getHeight() / 2);
keepRect.intersect(mRect);
assert (coverRect.isEmpty() || keepRect.contains(coverRect));
}
private Rect mapFromContents(final Rect rect, float contentsScale) {
int l = (int) (rect.getLeft() * contentsScale);
int t = (int) (rect.getTop() * contentsScale);
int r = (int) (l + rect.getWidth() * contentsScale + 0.5f);
int b = (int) (t + rect.getHeight() * contentsScale + 0.5f);
return new Rect(l, t, r - l, b - t);
}
public Rect mapToContents(final Rect rect) {
int l = (int) (rect.getLeft() / mContentsScale);
int t = (int) (rect.getTop() / mContentsScale);
int r = (int) (l + rect.getWidth() / mContentsScale + 0.5f);
int b = (int) (t + rect.getHeight() / mContentsScale + 0.5f);
return new Rect(l, t, r - l, b - t);
}
private float coverageRatio(final Rect contentsRect) {
Rect dirtyRect = mapFromContents(contentsRect);
float rectArea = dirtyRect.getWidth() * dirtyRect.getHeight();
float coverArea = 0.0f;
Coordinate topLeft = tileCoordinateForPoint(dirtyRect.getLeft(), dirtyRect.getTop());
Coordinate bottomRight = tileCoordinateForPoint(dirtyRect.getRight(), dirtyRect.getBottom());
for (int yCoordinate = topLeft.getY(); yCoordinate <= bottomRight.getY(); ++yCoordinate) {
for (int xCoordinate = topLeft.getX(); xCoordinate <= bottomRight.getX(); ++xCoordinate) {
ITile currentTile = getTileAt(xCoordinate, yCoordinate);
if (currentTile != null && currentTile.isReadyToPaint()) {
Rect coverRect = Rect.intersect(dirtyRect, currentTile.rect());
coverArea += coverRect.getWidth() * coverRect.getHeight();
}
}
}
return coverArea / rectArea;
}
@Override
public Rect tbsGetVisibleRect() {
Rect visible = new Rect(-mX, -mY, 2560, 1600);
visible.intersect(new Rect(0, 0, mWidth, mHeight));
float scale = mWidth / (float) mContentsRect.getWidth();
visible.setLeft((int) (visible.getLeft() / scale));
visible.setTop((int) (visible.getTop() / scale));
visible.setWidth((int) (visible.getWidth() / scale));
visible.setHeight((int) (visible.getHeight() / scale));
return visible;
}
public void setSize(int width, int height) {
mWidth = width;
mHeight = height;
float scaleW = mWidth / (float) mContentsRect.getWidth();
float scaleH = mHeight / (float) mContentsRect.getHeight();
if (scaleW > scaleH) {
mBS.setContentsScale(scaleH);
} else {
mBS.setContentsScale(scaleW);
}
}
private void adjustForContentsRect(Rect rect) {
Rect bounds = mRect;
Size candidateSize = new Size(rect.getWidth(), rect.getHeight());
rect.intersect(bounds);
if (rect.getWidth() == candidateSize.getWidth()
&& rect.getHeight() == candidateSize.getHeight()) return;
/*
* In the following case, there is no intersection of the contents rect and the cover rect.
* Thus the latter should not be inflated.
*
* +---------------+
* | m_rect |
* +---------------+
*
* +-------------------------------+
* | cover rect |
* | +---------+ |
* | | visible | |
* | | rect | |
* | +---------+ |
* +-------------------------------+
*/
if (rect.isEmpty()) return;
// Try to create a cover rect of the same size as the candidate, but within content bounds.
int pixelsCovered = candidateSize.getWidth() * candidateSize.getHeight();
if (rect.getWidth() < candidateSize.getWidth())
rect.inflate(0, ((pixelsCovered / rect.getWidth()) - rect.getHeight()) / 2);
if (rect.getHeight() < candidateSize.getHeight())
rect.inflate(((pixelsCovered / rect.getHeight()) - rect.getWidth()) / 2, 0);
rect.intersect(bounds);
}
private boolean resizeEdgeTiles() {
boolean wasResized = false;
List<Coordinate> tilesToRemove = new ArrayList<Coordinate>();
Iterator<Entry<Coordinate, ITile>> it = mMainTiles.iterator();
while (it.hasNext()) {
Entry<Coordinate, ITile> entry = it.next();
Coordinate tileCoordinate = entry.getValue().coordinate();
Rect tileRect = entry.getValue().rect();
Rect expectedTileRect = tileRectForCoordinate(tileCoordinate);
if (expectedTileRect.isEmpty()) tilesToRemove.add(tileCoordinate);
else if (!expectedTileRect.equals(tileRect)) {
entry.getValue().resize(expectedTileRect.getWidth(), expectedTileRect.getHeight());
wasResized = true;
}
}
int removeCount = tilesToRemove.size();
for (int n = 0; n < removeCount; ++n) removeTile(tilesToRemove.get(n));
return wasResized;
}
public void paint(GLCanvas canvas, int offsetX, int offsetY, final Rect rect) {
synchronized (mScaleBufferTiles) {
Iterator<Entry<Coordinate, ITile>> it = mScaleBufferTiles.iterator();
while (it.hasNext()) {
Entry<Coordinate, ITile> entry = it.next();
ITile currentTile = entry.getValue();
if (currentTile != null && currentTile.isReadyToPaint()) {
float scale = mPendingScale == 0 ? mContentsScale : mPendingScale;
currentTile.paint(canvas, offsetX, offsetY, null, scale / mScaleBufferTiles.getScale());
}
}
}
Rect dirtyRect = mapFromContents(rect, mScaleBufferTiles.getScale());
Coordinate topLeft = tileCoordinateForPoint(dirtyRect.getLeft(), dirtyRect.getTop());
Coordinate bottomRight = tileCoordinateForPoint(dirtyRect.getRight(), dirtyRect.getBottom());
// for (int yCoordinate = topLeft.getY(); yCoordinate <= bottomRight.getY();
// ++yCoordinate) {
// for (int xCoordinate = topLeft.getX(); xCoordinate <= bottomRight.getX();
// ++xCoordinate) {
// Coordinate currentCoordinate = new Coordinate(xCoordinate, yCoordinate);
// ITile currentTile = mScaleBufferTiles.get(currentCoordinate);
// if (currentTile != null && currentTile.isReadyToPaint()) {
// currentTile.paint(canvas, offsetX, offsetY, dirtyRect, mPendingScale /
// mScaleBufferTiles.getScale());
// } else {
// Rect tileRect = tileRectForCoordinate(currentCoordinate);
// Rect target = Rect.intersect(tileRect, dirtyRect);
// if (target == null || target.isEmpty())
// continue;
//
//// float scaleFactor = mOldScale == 0 ? 1 : mContentsScale / mOldScale;
//// float left = offsetX + target.getLeft() * scaleFactor;
//// float top = offsetY + target.getTop() * scaleFactor;
//// float width = target.getWidth() * scaleFactor;
//// float height = target.getHeight() * scaleFactor;
// // canvas.drawTexture(mTextureBuffer.getCheckerTextureID(canvas.getGL(),
// (int)width, (int)height), left, top, width, height);
// }
//
// }
// }
dirtyRect = mapFromContents(rect);
topLeft = tileCoordinateForPoint(dirtyRect.getLeft(), dirtyRect.getTop());
bottomRight = tileCoordinateForPoint(dirtyRect.getRight(), dirtyRect.getBottom());
for (int yCoordinate = topLeft.getY(); yCoordinate <= bottomRight.getY(); ++yCoordinate) {
for (int xCoordinate = topLeft.getX(); xCoordinate <= bottomRight.getX(); ++xCoordinate) {
Coordinate currentCoordinate = new Coordinate(xCoordinate, yCoordinate);
ITile currentTile = mMainTiles.get(currentCoordinate);
if (currentTile != null && currentTile.isReadyToPaint()) {
float scaleFactor = mPendingScale == 0 ? 1 : mPendingScale / mContentsScale;
currentTile.paint(canvas, offsetX, offsetY, dirtyRect, scaleFactor);
} else {
Rect tileRect = tileRectForCoordinate(currentCoordinate);
Rect target = Rect.intersect(tileRect, dirtyRect);
if (target == null || target.isEmpty()) continue;
float scaleFactor = mPendingScale == 0 ? 1 : mPendingScale / mContentsScale;
float left = offsetX + target.getLeft() * scaleFactor;
float top = offsetY + target.getTop() * scaleFactor;
float width = target.getWidth() * scaleFactor;
float height = target.getHeight() * scaleFactor;
//
// canvas.drawTexture(mTextureBuffer.getCheckerTextureID(canvas.getGL(), (int)width,
// (int)height), left, top, width, height);
}
}
}
}