Method CreatePath

core/graphics/shape/Area.cpp:16–35

}

void xg::shape::Area::CreatePath(canvas::CanvasContext &context) const {
    context.BeginPath();
    if(mergePoints_.size()) {
        context.MoveTo(mergePoints_[0].x + this->point_.x, mergePoints_[0].y + this->point_.y);
        std::size_t len = mergePoints_.size();
        if(smooth_ && len > 2) {
            array<Point, 2> constraint = {Point(0, 0), Point(1, 1)};
            BezierPath b_path = util::PathUtil::getSplinePath(mergePoints_, false, constraint);
            auto lineTo = [&](const BezierPoint &point) {
                context.BezierCurveTo(point.cp1.x, point.cp1.y, point.cp2.x, point.cp2.y, point.p.x, point.p.y);
            };
            // TODO 增加计算基于 point_ 的偏移
            std::for_each(b_path.begin(), b_path.end(), lineTo);
        } else {
            auto lineTo = [&](const Point &point) { context.LineTo(point.x + this->point_.x, point.y + this->point_.y); };
            std::for_each(mergePoints_.begin() + 1, mergePoints_.end(), lineTo);
        }
        context.ClosePath();
    }
}

BBox xg::shape::Area::CalculateBox(canvas::CanvasContext &context) const {
    // TODO 增加计算基于 point_ 的偏移