/*
    Copyright (c) 2005-2020 Intel Corporation

    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.
*/

// rpolygon.h
//
#ifndef _RPOLYGON_H_
#define _RPOLYGON_H_
#include <vector>
#include <iostream>
#include "pover_video.h"

#include "tbb/scalable_allocator.h"
#include "tbb/concurrent_vector.h"
#include "tbb/enumerable_thread_specific.h"

using namespace std;

using namespace tbb;

class RPolygon;
typedef scalable_allocator<RPolygon> RPolygon_allocator;
DEFINE RPolygon_allocator rAlloc;

enum MallocBehavior {
    UseMalloc,
    UseScalableAllocator
};

DEFINE MallocBehavior gMBehavior INIT(UseScalableAllocator);

class RPolygon {
public:
    RPolygon() {m_XMin = m_YMin = m_XMax = m_YMax = 0;
        m_r = m_g = m_b = 0;
    }
    RPolygon(int xMin, int yMin, int xMax, int yMax, int r=-1, int g=-1, int b=-1) : m_XMin(xMin), m_YMin(yMin), m_XMax(xMax), m_YMax(yMax) {
        if( r >= 0) {
            m_r=(colorcomp_t)r; m_g=(colorcomp_t)g; m_b=(colorcomp_t)b;
                        if(gDoDraw) drawPoly();
        }
    }

    void set_nodraw(int xMin, int yMin, int xMax, int yMax) {m_XMin=xMin; m_YMin=yMin; m_XMax=xMax; m_YMax=yMax;}

    RPolygon &intersect(RPolygon &otherPoly);
    void set(int xMin, int yMin, int xMax, int yMax) {
         set_nodraw(xMin,yMin,xMax,yMax);
         if(gDoDraw) {
            drawPoly();
         }
    }
    void get(int *xMin, int *yMin, int *xMax, int *yMax) const {*xMin=m_XMin;*yMin=m_YMin;*xMax=m_XMax;*yMax=m_YMax;}
    int xmax() const { return m_XMax; }
    int xmin() const { return m_XMin; }
    int ymax() const { return m_YMax; }
    int ymin() const { return m_YMin; }
    void setColor(colorcomp_t newr, colorcomp_t newg, colorcomp_t newb) {m_r = newr; m_g=newg; m_b=newb;}
    void getColor(int *myr, int *myg, int *myb) {*myr=m_r; *myg=m_g; *myb=m_b;}
    color_t myColor() {return gVideo->get_color(m_r, m_g, m_b);}
    void drawPoly() {
        if(gVideo->running) {
            if(g_next_frame()) {    // Shouldn't call next_frame each time
                drawing_area ldrawing(
                    gDrawXOffset+m_XMin*gPolyXBoxSize,         //x
                    gDrawYOffset+m_YMin*gPolyYBoxSize,         //y
                    (m_XMax-m_XMin+1)*gPolyXBoxSize,           //sizex
                    (m_YMax-m_YMin+1)*gPolyYBoxSize);          //sizey
                for(int y=0; y<ldrawing.size_y; y++) {
                    ldrawing.set_pos(0,y);
                    color_t my_color = myColor();
                    for(int x=0;x < ldrawing.size_x; x++) {
                         ldrawing.put_pixel(my_color);
                    }
                }
            }
        }
    }

    int  area() {return ((m_XMax-m_XMin+1)*(m_YMax-m_YMin+1));}
    void print(int i) { cout << "RPolygon " << i << " (" << m_XMin << ", " << m_YMin << ")-(" << m_XMax << ", " << m_YMax << ") " << endl; fflush(stdout);}
private:
    int m_XMin;
    int m_YMin;
    int m_XMax;
    int m_YMax;
    colorcomp_t m_r;
    colorcomp_t m_g;
    colorcomp_t m_b;
};

#if _MAIN_C_
bool operator<(const RPolygon& a, const RPolygon& b) {
    if(a.ymin() > b.ymin()) return false;
    if(a.ymin() < b.ymin()) return true;
    return a.xmin() < b.xmin();
}
#else
extern bool operator<(const RPolygon& a, const RPolygon& b);
#endif

extern ostream& operator<<(ostream& s, const RPolygon &p);

class RPolygon_flagged {
    RPolygon *myPoly;
    bool is_duplicate;
public:
    RPolygon_flagged() {myPoly = NULL; is_duplicate = false;}
    RPolygon_flagged(RPolygon* _p, bool _is_duplicate) : myPoly(_p), is_duplicate(_is_duplicate) { }
    bool isDuplicate() {return is_duplicate;}
    void setDuplicate(bool newValue) {is_duplicate = newValue;}
    RPolygon *p() {return myPoly;}
    void setp(RPolygon *newp) {myPoly = newp;}
};

typedef class vector<RPolygon, RPolygon_allocator> Polygon_map_t;
typedef class concurrent_vector<RPolygon, RPolygon_allocator> concurrent_Polygon_map_t;
typedef class enumerable_thread_specific<Polygon_map_t> ETS_Polygon_map_t;
typedef class vector<RPolygon_flagged, scalable_allocator<RPolygon_flagged> > Flagged_map_t; // we'll make shallow copies

inline bool PolygonsOverlap(RPolygon *p1, RPolygon *p2, int &xl, int &yl, int &xh, int &yh) {
    int xl1, yl1, xh1, yh1, xl2, yl2, xh2, yh2;
#if _DEBUG
     rt_sleep(1);   // slow down the process so we can see it.
#endif
    p1->get(&xl1, &yl1, &xh1, &yh1);
    p2->get(&xl2, &yl2, &xh2, &yh2);
    if(xl1 > xh2) return false;
    if(xh1 < xl2) return false;
    if(yl1 > yh2) return false;
    if(yh1 < yl2) return false;
    xl = (xl1 < xl2) ? xl2 : xl1;
    xh = (xh1 < xh2) ? xh1 : xh2;
    yl = (yl1 < yl2) ? yl2 : yl1;
    yh = (yh1 < yh2) ? yh1 : yh2;
    return true;
}

#endif // _RPOLYGON_H_
