1/*
2 * Copyright 2014 Google Inc.
3 *
4 * Use of this source code is governed by a BSD-style license that can be
5 * found in the LICENSE file.
6 */
7
8#include "SkBBHFactory.h"
9#include "SkPictureStateTree.h"
10#include "SkQuadTree.h"
11#include "SkRTree.h"
12#include "SkTileGrid.h"
13
14
15SkBBoxHierarchy* SkQuadTreeFactory::operator()(int width, int height) const {
16    return SkNEW_ARGS(SkQuadTree, (SkIRect::MakeWH(width, height)));
17}
18
19SkBBoxHierarchy* SkRTreeFactory::operator()(int width, int height) const {
20    // These values were empirically determined to produce reasonable
21    // performance in most cases.
22    static const int kRTreeMinChildren = 6;
23    static const int kRTreeMaxChildren = 11;
24
25    SkScalar aspectRatio = SkScalarDiv(SkIntToScalar(width),
26                                       SkIntToScalar(height));
27    bool sortDraws = false;  // Do not sort draw calls when bulk loading.
28
29    return SkRTree::Create(kRTreeMinChildren, kRTreeMaxChildren,
30                           aspectRatio, sortDraws);
31}
32
33SkBBoxHierarchy* SkTileGridFactory::operator()(int width, int height) const {
34    SkASSERT(fInfo.fMargin.width() >= 0);
35    SkASSERT(fInfo.fMargin.height() >= 0);
36    // Note: SkIRects are non-inclusive of the right() column and bottom() row.
37    // For example, an SkIRect at 0,0 with a size of (1,1) will only have
38    // content at pixel (0,0) and will report left=0 and right=1, hence the
39    // "-1"s below.
40    int xTileCount = (width + fInfo.fTileInterval.width() - 1) / fInfo.fTileInterval.width();
41    int yTileCount = (height + fInfo.fTileInterval.height() - 1) / fInfo.fTileInterval.height();
42    return SkNEW_ARGS(SkTileGrid, (xTileCount, yTileCount, fInfo,
43                                    SkTileGridNextDatum<SkPictureStateTree::Draw>));
44}
45