1 /*
2 * Copyright (c) 2020-2021 Huawei Device Co., Ltd.
3 * Licensed under the Apache License, Version 2.0 (the "License");
4 * you may not use this file except in compliance with the License.
5 * You may obtain a copy of the License at
6 *
7 * http://www.apache.org/licenses/LICENSE-2.0
8 *
9 * Unless required by applicable law or agreed to in writing, software
10 * distributed under the License is distributed on an "AS IS" BASIS,
11 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
12 * See the License for the specific language governing permissions and
13 * limitations under the License.
14 */
15
16 #include "draw/draw_curve.h"
17 #include "animator/interpolation.h"
18 #include "engines/gfx/gfx_engine_manager.h"
19
20 namespace OHOS {
DrawCubicBezier(BufferInfo & gfxDstBuffer,const Point & start,const Point & control1,const Point & control2,const Point & end,const Rect & mask,int16_t width,const ColorType & color,OpacityType opacity)21 void DrawCurve::DrawCubicBezier(BufferInfo& gfxDstBuffer, const Point& start, const Point& control1,
22 const Point& control2, const Point& end, const Rect& mask,
23 int16_t width, const ColorType& color, OpacityType opacity)
24 {
25 if ((width == 0) || (opacity == OPA_TRANSPARENT)) {
26 return;
27 }
28
29 Point prePoint = start;
30 for (int16_t t = 1; t <= INTERPOLATION_RANGE; t++) {
31 Point point;
32 point.x = Interpolation::GetBezierInterpolation(t, start.x, control1.x, control2.x, end.x);
33 point.y = Interpolation::GetBezierInterpolation(t, start.y, control1.y, control2.y, end.y);
34 if ((prePoint.x == point.x) && (prePoint.y == point.y)) {
35 continue;
36 }
37 BaseGfxEngine::GetInstance()->DrawLine(gfxDstBuffer, prePoint, point, mask, width, color, opacity);
38 prePoint = point;
39 }
40 }
41 }
42