xref: /foundation/arkui/ui_lite/frameworks/draw/draw_curve.cpp

/*
 * Copyright (c) 2020-2021 Huawei Device Co., Ltd.
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "draw/draw_curve.h"
#include "animator/interpolation.h"
#include "engines/gfx/gfx_engine_manager.h"

namespace OHOS {
void DrawCurve::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)
{
    if ((width == 0) || (opacity == OPA_TRANSPARENT)) {
        return;
    }

    Point prePoint = start;
    for (int16_t t = 1; t <= INTERPOLATION_RANGE; t++) {
        Point point;
        point.x = Interpolation::GetBezierInterpolation(t, start.x, control1.x, control2.x, end.x);
        point.y = Interpolation::GetBezierInterpolation(t, start.y, control1.y, control2.y, end.y);
        if ((prePoint.x == point.x) && (prePoint.y == point.y)) {
            continue;
        }
        BaseGfxEngine::GetInstance()->DrawLine(gfxDstBuffer, prePoint, point, mask, width, color, opacity);
        prePoint = point;
    }
}
}