// Copyright (c) 2016-2018 Kiwano - Nomango
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#include <kiwano/render/GeometrySink.h>
#include <kiwano/render/Renderer.h>

namespace kiwano
{

	GeometrySink::GeometrySink()
	{
	}

	GeometrySink::~GeometrySink()
	{
		Close();
	}

	void GeometrySink::Open()
	{
		if (!IsOpened())
		{
			path_geo_.reset();
			Renderer::Instance().CreateGeometrySink(*this);

			win32::ThrowIfFailed(path_geo_->Open(&sink_));
		}
	}

	void GeometrySink::Close()
	{
		if (IsOpened())
		{
			win32::ThrowIfFailed(sink_->Close());
			sink_.reset();
		}
	}

	bool GeometrySink::IsOpened() const
	{
		return sink_ != nullptr;
	}

	Geometry GeometrySink::GetGeometry()
	{
		Close();

		Geometry geo;
		geo.SetGeometry(path_geo_);
		return geo;
	}

	GeometrySink& GeometrySink::AddGeometry(Geometry const& input, const Matrix3x2* input_matrix)
	{
		if (!IsOpened())
		{
			Open();
		}

		ComPtr<ID2D1Geometry> geo = input.geo_;
		win32::ThrowIfFailed(
			geo->Outline(
				DX::ConvertToMatrix3x2F(input_matrix),
				D2D1_DEFAULT_FLATTENING_TOLERANCE,
				sink_.get()
			)
		);
		return (*this);
	}

	GeometrySink& GeometrySink::BeginPath(Point const& begin_pos)
	{
		if (!IsOpened())
		{
			Open();
		}

		sink_->BeginFigure(DX::ConvertToPoint2F(begin_pos), D2D1_FIGURE_BEGIN_FILLED);
		return (*this);
	}

	GeometrySink& GeometrySink::EndPath(bool closed)
	{
		KGE_ASSERT(sink_);
		sink_->EndFigure(closed ? D2D1_FIGURE_END_CLOSED : D2D1_FIGURE_END_OPEN);
		return (*this);
	}

	GeometrySink& GeometrySink::AddLine(Point const& point)
	{
		KGE_ASSERT(sink_);
		sink_->AddLine(DX::ConvertToPoint2F(point));
		return (*this);
	}

	GeometrySink& GeometrySink::AddLines(Vector<Point> const& points)
	{
		KGE_ASSERT(sink_);
		sink_->AddLines(
			reinterpret_cast<const D2D_POINT_2F*>(&points[0]),
			static_cast<uint32_t>(points.size())
		);
		return (*this);
	}

	GeometrySink& kiwano::GeometrySink::AddLines(const Point* points, size_t count)
	{
		KGE_ASSERT(sink_);
		sink_->AddLines(reinterpret_cast<const D2D_POINT_2F*>(points), UINT32(count));
		return (*this);
	}

	GeometrySink& GeometrySink::AddBezier(Point const& point1, Point const& point2, Point const& point3)
	{
		KGE_ASSERT(sink_);
		sink_->AddBezier(
			D2D1::BezierSegment(
				DX::ConvertToPoint2F(point1),
				DX::ConvertToPoint2F(point2),
				DX::ConvertToPoint2F(point3)
			)
		);
		return (*this);
	}

	GeometrySink& GeometrySink::AddArc(Point const& point, Size const& radius, float rotation, bool clockwise, bool is_small)
	{
		KGE_ASSERT(sink_);
		sink_->AddArc(
			D2D1::ArcSegment(
				DX::ConvertToPoint2F(point),
				DX::ConvertToSizeF(radius),
				rotation,
				clockwise ? D2D1_SWEEP_DIRECTION_CLOCKWISE : D2D1_SWEEP_DIRECTION_COUNTER_CLOCKWISE,
				is_small ? D2D1_ARC_SIZE_SMALL : D2D1_ARC_SIZE_LARGE
			)
		);
		return (*this);
	}

	GeometrySink& GeometrySink::Combine(Geometry const& geo_a, Geometry const& geo_b, CombineMode mode, const Matrix3x2* matrix)
	{
		if (!IsOpened())
		{
			Open();
		}

		ComPtr<ID2D1Geometry> geo_a_raw = geo_a.geo_;
		ComPtr<ID2D1Geometry> geo_b_raw = geo_b.geo_;
		win32::ThrowIfFailed(
			geo_a_raw->CombineWithGeometry(
				geo_b_raw.get(),
				D2D1_COMBINE_MODE(mode),
				DX::ConvertToMatrix3x2F(matrix),
				sink_.get()
			)
		);
		return (*this);
	}

	void GeometrySink::Clear()
	{
		Close();

		path_geo_.reset();
	}

}