#ifndef MV3DELEMENTSTAIR_H
#define MV3DELEMENTSTAIR_H

#include <Indoor/floorplan/v2/Floorplan.h>

#include "misc/Cube.h"
#include "MV3DElement.h"
#include "misc/Shader.h"
#include "misc/TriangleData.h"

class MV3DElementStair : public MV3DElement {

	Floorplan::Floor* floor;
	Floorplan::Stair* stair;

public:

	/** ctor */
	MV3DElementStair(Floorplan::Floor* floor, Floorplan::Stair* stair) : floor(floor), stair(stair) {
		;
	}

protected:


	/** repaint me */
	void render(const RenderSettings& rs) override {

		TriangleData data;

		const std::vector<Floorplan::StairPart> parts = stair->getParts();
		const std::vector<Floorplan::Quad3> quads = Floorplan::getQuads(parts, floor);

		for (int i = 0; i < (int) parts.size(); ++i) {

			//const Floorplan::StairPart& part = parts[i];
			const Floorplan::Quad3& quad = quads[i];

			//const Floorplan::Quad3 quad = part.getQuad(floor);
			const Point3 p1 = quad.p2-quad.p1;
			const Point3 p2 = quad.p4-quad.p1;

			Point3 n = Math::normal(p1,p2);
			if (n.z < 0) {n = -n;}

			// upper side
			data.addTriangle(quad.p1, quad.p2, quad.p3, n);
			data.addTriangle(quad.p3, quad.p4, quad.p1, n);

			// lower side
			data.addTriangle(quad.p2, quad.p1, quad.p3, -n);
			data.addTriangle(quad.p4, quad.p3, quad.p1, -n);

		}

		rs.shader->bind();
		rs.shader->setModelMatrix(QMatrix4x4());
		rs.shader->setColor(1.0, 0.55, 0.55);
		rs.shader->setVertices(data.getVertices().data());
		rs.shader->setNormals(data.getNormals().data());
		glDrawArrays(GL_TRIANGLES, 0, data.getVertices().size()/3);
		rs.shader->unsetVertices();
		rs.shader->unsetNormals();
		rs.shader->release();

	}

	bool isTransparent() const override {
		return false;
	}

};

#endif // MV3DELEMENTSTAIR_H