/*
 * © Copyright 2014 – Urheberrechtshinweis
 * Alle Rechte vorbehalten / All Rights Reserved
 *
 * Programmcode ist urheberrechtlich geschuetzt.
 * Das Urheberrecht liegt, soweit nicht ausdruecklich anders gekennzeichnet, bei Frank Ebner.
 * Keine Verwendung ohne explizite Genehmigung.
 * (vgl. § 106 ff UrhG / § 97 UrhG)
 */

#include "MapViewElementHelper.h"

#include <Indoor/geo/Point2.h>
#include <Indoor/geo/Point3.h>
#include <Indoor/geo/Line2.h>

#include <QColor>
#include <QPen>
#include <QBrush>

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

ClickDist MapElementHelper::getLineDistanceXY(Point2 p1, Point2 p2, Point2 dst) {

	// the line (p1, p2)
	const Line2 line(p1, p2);

	// 90 degree rotation L of the line (p1, p2)
	const Point2 vec = (p1 - p2).perpendicular();

	// the line L
	const Line2 perb(dst-vec*100, dst+vec*100);

	// calculate the cut betwen L and (p1,p2) (if any)
	Point2 cut(0,0);
	ClickDist cutDist(99999999, ClickDistType::CUT);
	if (line.getSegmentIntersection(perb, cut)) {

		// distance between cut-point and mouse
		cutDist.dst_px = cut.getDistance(dst);

	}

	// (direct) distance from endpoints
	const ClickDist d1(p1.getDistance(dst), ClickDistType::DIRECT);
	const ClickDist d2(p2.getDistance(dst), ClickDistType::DIRECT);

	// return the nearest possibility:
	return std::min(d1, std::min(d2, cutDist));

}

QPen MapElementHelper::getPen(Floorplan::Material mat, Floorplan::ObstacleType type, bool focus, float thickness_px) {

	using namespace Floorplan;
	QPen pen;
	pen.setColor(Qt::darkGray);				// default color
	pen.setWidth(thickness_px);				// element thickness

	// this one is very important!
	// as we change the line's width, the line also becomes longer
	// but, we do not want this! -> FlatCap
	pen.setCapStyle(Qt::FlatCap);

	if		(focus)								{pen.setColor(QColor(64,64,200));}
	else if (mat == Material::CONCRETE)			{pen.setColor(QColor(32,32,32));}
	else if (mat == Material::DRYWALL)			{;}
	else if (mat == Material::GLASS)			{pen.setStyle(Qt::PenStyle::DotLine);}
	else if (mat == Material::METALLIZED_GLAS)	{pen.setStyle(Qt::PenStyle::DotLine);}
	else if (mat == Material::METAL)			{pen.setColor(QColor(64, 64, 64));}
	else if (type == ObstacleType::HANDRAIL)	{pen.setStyle(Qt::PenStyle::DashLine);}
	else if (type == ObstacleType::UNKNOWN)		{pen.setColor(Qt::red);}
	else if (type == ObstacleType::PILLAR)		{pen.setColor(Qt::red);}

	return pen;
}