SkQuadClipper.h revision c07d23a6e220c0aff36e3e4e06c1b685a440108e 
1/*
2 * Copyright (C) 2009 The Android Open Source Project
3 *
4 * Licensed under the Apache License, Version 2.0 (the "License");
5 * you may not use this file except in compliance with the License.
6 * You may obtain a copy of the License at
7 *
8 *      http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17#ifndef SkQuadClipper_DEFINED
18#define SkQuadClipper_DEFINED
19
20#include "SkPoint.h"
21#include "SkRect.h"
22
23/** This class is initialized with a clip rectangle, and then can be fed quads,
24    which must already be monotonic in Y.
25
26    In the future, it might return a series of segments, allowing it to clip
27    also in X, to ensure that all segments fit in a finite coordinate system.
28 */
29class SkQuadClipper {
30public:
31    SkQuadClipper();
32
33    void setClip(const SkIRect& clip);
34
35    bool clipQuad(const SkPoint src[3], SkPoint dst[3]);
36
37private:
38    SkRect      fClip;
39};
40
41#endif
42