blob: 6d6e3491b6d92411b170a721e3af1ddb3ca9b2a1 (
plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
|
/*
* Copyright 2014 Google Inc.
*
* Use of this source code is governed by a BSD-style license that can be
* found in the LICENSE file.
*/
#ifndef SkPatchUtils_DEFINED
#define SkPatchUtils_DEFINED
#include "SkColorPriv.h"
#include "SkMatrix.h"
#include "SkVertices.h"
class SK_API SkPatchUtils {
public:
// Enums for control points based on the order specified in the constructor (clockwise).
enum {
kNumCtrlPts = 12,
kNumCorners = 4,
kNumPtsCubic = 4
};
/**
* Get the points corresponding to the top cubic of cubics.
*/
static void GetTopCubic(const SkPoint cubics[12], SkPoint points[4]);
/**
* Get the points corresponding to the bottom cubic of cubics.
*/
static void GetBottomCubic(const SkPoint cubics[12], SkPoint points[4]);
/**
* Get the points corresponding to the left cubic of cubics.
*/
static void GetLeftCubic(const SkPoint cubics[12], SkPoint points[4]);
/**
* Get the points corresponding to the right cubic of cubics.
*/
static void GetRightCubic(const SkPoint cubics[12], SkPoint points[4]);
/**
* Method that calculates a level of detail (number of subdivisions) for a patch in both axis.
*/
static SkISize GetLevelOfDetail(const SkPoint cubics[12], const SkMatrix* matrix);
static sk_sp<SkVertices> MakeVertices(const SkPoint cubics[12], const SkColor colors[4],
const SkPoint texCoords[4], int lodX, int lodY);
};
#endif
|
