gmt-makemap/modules/gmt/modgmt_structs.h

#ifndef MODGMT_STRUCT_H
#define MODGMT_STRUCT_H
#include <cinttypes>
#include <cmath>
#include <map>
#include "common.h"

// Coordinate
struct gmt_coord
{
 bool isdeg;
 union
 {
  double r;
  struct
  {
   bool sign;
   uint16_t d;
   uint8_t m;
   double s;
  };
 };

 std::string Value() const
 {
  if(!isdeg) return std::to_string(r);
  else return (sign?"":"-")+std::to_string(d)+":"+std::to_string(m)+(s==0?"":":"+std::to_string(s));
 }
 operator double() const
 {
  if(isdeg) return (d+(m+s/60.0)/60.0)*(sign?1:-1);
  else return r;
 }
 bool Convert(const std::string& str)
 {
  WordList wl;
  WordList::const_iterator cw;
  wl=Split(str,":",true);
  if(1==wl.size()) // No dd:mm
  {
   isdeg=false;
   return str2double(str,&r);
  }
  if(0==wl.size() || wl.size()>3) return false;

  isdeg=true;
  int64_t res;

  // degrees
  cw=wl.begin();
  if(!str2int(*cw,&res)) return false;
  if(res>360 || res<-360) res%=360;
  sign=(std::string::npos==cw->find('-'));
  d=static_cast<uint16_t>(sign?res:-res);
  // minutes
  cw++;
  if(!str2int(*cw,&res)) return false;
  if(res<0 || res>=60) return false;
  m=static_cast<uint8_t>(res);
  s=0;

  // seconds
  cw++;
  if(wl.end()==cw) return true; // No seconds
  if(!str2double(*cw,&s) ) return false;
  if(s<0.0 || s>=60.0) return false;
  return true;
 }
 bool Convert(double num)
 {
  isdeg=false;
  r=num;
  return true;
 }
};


// Region
struct gmt_region
{
 enum Type {NORMAL,BBOX,GLOBAL360,GLOBAL180};
 Type type;
 struct gmt_coord xb,xe,yb,ye;

 std::string Value() const
 {
  switch(type)
  {
   case(NORMAL): return std::string("-R")+xb.Value()+"/"+xe.Value()+"/"+yb.Value()+"/"+ye.Value();
   case(BBOX): return std::string("-R")+xb.Value()+"/"+yb.Value()+"/"+xe.Value()+"/"+ye.Value()+"r";
   case(GLOBAL360): return "-Rg";
   case(GLOBAL180): return "-Rd";
  }
  return "";
 }

 // Only "global", "global180" and "global360"
 // TODO: add parsing of "-R" strings
 bool Convert(const std::string& istr)
 {
  std::string str=istr;
  tolower(str);
  if("global180"==str)
  {
   type=GLOBAL180;
   xb.Convert(-180.0); xe.Convert(180.0);
   yb.Convert(-90.0); ye.Convert(90.0);
   return true;
  }
  if("global360"==str || "global"==str)
  {
   type=GLOBAL360;
   xb.Convert(0.0); xe.Convert(360.0);
   yb.Convert(-90.0); ye.Convert(90.0);
   return true;
  }
  return false;
 }

 // Make by coordinates
 bool Convert(struct gmt_coord ixb, struct gmt_coord ixe, struct gmt_coord iyb, struct gmt_coord iye, bool isbbox=false)
 {
  type=isbbox?BBOX:NORMAL;
  xb=ixb; yb=iyb; xe=ixe; ye=iye;
  return true;
 }
};


// Projection
struct gmt_projection
{
 // OBLIQMERCATOR types
 enum class OType {NOTDEF,A,B,C};
 // No UTM (-Ju)
 enum projection {NOTDEF,XY,CYL_EQU,MERCATOR,TRANSMERCATOR,OBLIQMERCATOR,CASSINI,CYL_EQA,MILLER,CYL_STERE};
 // Real size in cm of drawing area
 double rwidth,rheight;

 struct gmt_region region;
 projection proj;
 double width; // parameter of projection
 static const double default_width;

 union // other projection parameters
 {
  // XY
  struct {double height;} x;
  // Cylindrical projections
  // CYL_EQU (Cylindrical Equidistant -Jq)
  struct {struct gmt_coord stpar,cmer;} q;
  // MERCATOR (-Jm)
  struct {struct gmt_coord stpar,cmer;} m;
  // TRANSMERCATOR (-Jt)
  struct {struct gmt_coord cmer,orlat; double scale;} t;
  // OBLIQMERCATOR (-Jo)
  struct
  {
   OType type;
   struct gmt_coord clon,clat;
   union
   {
    struct gmt_coord azimuth; // A
    struct {struct gmt_coord eqlon,eqlat;}; // B
    struct {struct gmt_coord polelon,polelat;}; // C
   };
  } o;
  // CASSINI (-Jc)
  struct {struct gmt_coord clon,clat;} c;
  // CYL_EQA (Cylindrical equal-area -Jy)
  struct {struct gmt_coord stpar,cmer;} y;
  // MILLER (-Jj)
  struct {struct gmt_coord cmer;} j;
  // CYL_STERE (Cylindrical stereographic -Jcyl_stere)
  struct {struct gmt_coord stpar,cmer;} cyl_stere;
 };
 std::string Value() const
 {
  std::string ret;
  switch(proj)
  {
   case(XY): {ret="-JX"+std::to_string(width)+"c/"+std::to_string(x.height)+"c"; break;}
   case(CYL_EQU): {ret="-JQ"+q.cmer.Value()+"/"+q.stpar.Value()+"/"+std::to_string(width)+"c"; break;}
   case(MERCATOR): {ret="-JM"+m.cmer.Value()+"/"+m.stpar.Value()+"/"+std::to_string(width)+"c"; break;}
   case(TRANSMERCATOR): {ret="-JT"+t.cmer.Value()+"/"+t.orlat.Value()+"/"+std::to_string(width)+"c --PROJ_SCALE_FACTOR="+std::to_string(t.scale); break;}
   case(OBLIQMERCATOR):
   {
    switch(o.type)
    {
     case(OType::A): {ret="-JOa"+o.clon.Value()+"/"+o.clat.Value()+"/"+o.azimuth.Value()+"/"+std::to_string(width)+"c"; break;}
     case(OType::B): {ret="-JOb"+o.clon.Value()+"/"+o.clat.Value()+"/"+o.eqlon.Value()+"/"+o.eqlat.Value()+"/"+std::to_string(width)+"c"; break;}
     case(OType::C): {ret="-JOb"+o.clon.Value()+"/"+o.clat.Value()+"/"+o.polelon.Value()+"/"+o.polelat.Value()+"/"+std::to_string(width)+"c"; break;}
     default: return "";
    }
   }
   case(CASSINI): {ret="-JC"+c.clon.Value()+"/"+c.clat.Value()+"/"+std::to_string(width)+"c"; break;}
   case(CYL_EQA): {ret="-JY"+y.stpar.Value()+"/"+y.cmer.Value()+"/"+std::to_string(width)+"c"; break;}
   case(MILLER): {ret="-JJ"+j.cmer.Value()+"/"+std::to_string(width)+"c"; break;}
   case(CYL_STERE): {ret="-JCyl_stere"+cyl_stere.stpar.Value()+"/"+cyl_stere.cmer.Value()+"/"+std::to_string(width)+"c"; break;}
   default: return "";
  }
  ret+=" "+region.Value();
  return ret;
 }
 bool SetType(const std::string& s)
 {
  proj=NOTDEF;
  std::string str=s;
  tolower(str);
  if(projnames.end()==projnames.find(s)) return false;
  proj=projnames[s];
  return true;
 }

 static void FillProjNames();

 private:
 static std::map<std::string,projection> projnames;
};


// Color
struct gmt_color
{
 enum ColorModel {RGB,GRAY,HSV,CMYK};
 ColorModel model;
 union
 {
  double gray; // 0-255
  struct {double r,g,b;}; // 0-255
  struct {double hue,saturation,value;}; // 0-360, 0-1, 0-1
  struct {double cyan,magenta,yellow,black;}; // 0-100
 };
 double transparency;
 std::string Value() const
 {
  std::string trans=(transparency!=0)?("@"+std::to_string(transparency)):"";
  switch(model)
  {
   case(RGB): return std::to_string(r)+"/"+std::to_string(g)+"/"+std::to_string(b)+trans;
   case(GRAY): return std::to_string(gray)+trans;
   case(HSV): return std::to_string(hue)+"-"+std::to_string(saturation)+"-"+std::to_string(value)+trans;
   case(CMYK): return std::to_string(cyan)+"/"+std::to_string(magenta)+"/"+std::to_string(yellow)+"/"+std::to_string(black)+trans;
  }
  return "";
 }
 double Gray() const
 {
  switch(model)
  {
   case(RGB):  return RGB2Gray().gray;
   case(GRAY): return gray;
   case(HSV):  return HSV2Gray().gray;
   case(CMYK): return CMYK2Gray().gray;
  }
  return 0;
 }

 double R() const
 {
  switch(model)
  {
   case(RGB):  return r;
   case(GRAY): return Gray2RGB().r;
   case(HSV):  return HSV2RGB().r;
   case(CMYK): return CMYK2RGB().r;
  }
  return 0;
 }
 double G() const
 {
  switch(model)
  {
   case(RGB):  return g;
   case(GRAY): return Gray2RGB().g;
   case(HSV):  return HSV2RGB().g;
   case(CMYK): return CMYK2RGB().g;
  }
  return 0;
 }
 double B() const
 {
  switch(model)
  {
   case(RGB):  return b;
   case(GRAY): return Gray2RGB().b;
   case(HSV):  return HSV2RGB().b;
   case(CMYK): return CMYK2RGB().b;
  }
  return 0;
 }

 double H() const
 {
  switch(model)
  {
   case(RGB):  return RGB2HSV().hue;
   case(GRAY): return Gray2HSV().hue;
   case(HSV):  return hue;
   case(CMYK): return CMYK2HSV().hue;
  }
  return 0;// Own functions
 }
 double S() const
 {
  switch(model)
  {
   case(RGB):  return RGB2HSV().saturation;
   case(GRAY): return Gray2HSV().saturation;
   case(HSV):  return saturation;
   case(CMYK): return CMYK2HSV().saturation;
  }
  return 0;
 }
 double V() const
 {
  switch(model)
  {
   case(RGB):  return RGB2HSV().value;
   case(GRAY): return Gray2HSV().value;
   case(HSV):  return value;
   case(CMYK): return CMYK2HSV().value;
  }
  return 0;
 }

 double C() const
 {
  switch(model)
  {
   case(RGB):  return RGB2CMYK().cyan;
   case(GRAY): return Gray2CMYK().cyan;
   case(HSV):  return HSV2CMYK().cyan;
   case(CMYK): return cyan;
  }
  return 0;
 }
 double M() const
 {
  switch(model)
  {
   case(RGB):  return RGB2CMYK().magenta;
   case(GRAY): return Gray2CMYK().magenta;
   case(HSV):  return HSV2CMYK().magenta;
   case(CMYK): return magenta;
  }
  return 0;
 }
 double Y() const
 {
  switch(model)
  {
   case(RGB):  return RGB2CMYK().yellow;
   case(GRAY): return Gray2CMYK().yellow;
   case(HSV):  return HSV2CMYK().yellow;
   case(CMYK): return yellow;
  }
  return 0;
 }
 double K() const
 {
  switch(model)
  {
   case(RGB):  return RGB2CMYK().black;
   case(GRAY): return Gray2CMYK().black;
   case(HSV):  return HSV2CMYK().black;
   case(CMYK): return black;
  }
  return 0;
 }
 // Transformation functions
 private:
#include "colortransform.h"
};


// Dash
struct gmt_dash
{
 std::vector<double> dash;
 double shift;
 std::string Value() const
 {
  std::string ret;
  if(dash.empty()) return ret;
  for(auto i:dash) ret+=std::to_string(i)+"_";
  ret.back()=':';
  ret+=std::to_string(shift)+"c";
  return ret;
 }
 operator bool() const {return !dash.empty();}
};


// Pen
struct gmt_pen
{
 double width;
 struct gmt_color color;
 struct gmt_dash dash;
 std::string Value() const {return std::to_string(width)+","+color.Value()+(dash?(","+dash.Value()):"");}
};
#endif