/*
 * Copyright (c) 2002-2006 Samit Basu
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2 of the License, or
 * (at your option) any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; if not, write to the Free Software
 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
 *
 */
#include "RenderEngine.hpp"

RenderEngine::SymbolType StringToSymbol(std::string name) {
  if (name == "+")
    return RenderEngine::Plus;
  if (name == "o")
    return RenderEngine::Circle;
  if (name == "*")
    return RenderEngine::Star;
  if (name == ".")
    return RenderEngine::Dot;
  if (name == "x")
    return RenderEngine::Times;
  if ((name == "square") || (name == "s"))
    return RenderEngine::Square;
  if ((name == "diamond") || (name == "d"))
    return RenderEngine::Diamond;
  if (name == "^")
    return RenderEngine::Up;
  if (name == "v")
    return RenderEngine::Down;
  if (name == ">")
    return RenderEngine::Right;
  if (name == "<")
    return RenderEngine::Left;
  return RenderEngine::None;
}
  
void DrawSymbol(RenderEngine& gc, RenderEngine::SymbolType symb,
		double x, double y, double z, double sze,
		std::vector<double> edgecolor, 
		std::vector<double> fillcolor, 
		double width) {
  bool stroke, fill;
  stroke = edgecolor[0] != -1;
  fill = fillcolor[0] != -1;
  gc.lineWidth(width);
  gc.setLineStyle("-");
  switch (symb) {
  case RenderEngine:: Plus:
    if (stroke) {
      gc.color(edgecolor);
      gc.line(x-sze,y,z,x+sze,y,z);
      gc.line(x,y-sze,z,x,y+sze,z);
    }
    break;
  case RenderEngine:: Circle:
    if (fill) {
      gc.color(fillcolor);
      gc.circleFill(x,y,sze);
    }
    if (stroke) {
      gc.color(edgecolor);
      gc.circle(x,y,sze);
    } 
    break;
  case RenderEngine:: Star:
    if (stroke) {
      gc.color(edgecolor);
      gc.line(x-sze,y-sze,z,x+sze,y+sze,z);
      gc.line(x+sze,y-sze,z,x-sze,y+sze,z);
      gc.line(x-sze,y,z,x+sze,y,z);
      gc.line(x,y-sze,z,x,y+sze,z);
    }
    break;
  case RenderEngine:: Dot:
    if (stroke) {
      gc.color(edgecolor);
      gc.circleFill(x,y,sze/3.0);
    }
    break;
  case RenderEngine:: Times:
    if (stroke) {
      gc.color(edgecolor);
      gc.line(x-sze,y-sze,z,x+sze,y+sze,z);
      gc.line(x+sze,y-sze,z,x-sze,y+sze,z);
    }
    break;
  case RenderEngine:: Square:
    if (fill) {
      gc.color(fillcolor);
      gc.rectFill(x-sze,y-sze,x+sze,y+sze);
    }
    if (stroke) {
      gc.color(edgecolor);
      gc.rect(x-sze,y-sze,x+sze,y+sze);
    }
    break;
  case RenderEngine:: Diamond:
    if (fill) {
      gc.color(fillcolor);
      gc.quad(x,y-sze,0,
	      x+sze,y,0,
	      x,y+sze,0,
	      x-sze,y,0);
    }
    if (stroke) {
      gc.color(edgecolor);
      gc.quadline(x,y-sze,0,
		  x+sze,y,0,
		  x,y+sze,0,
		  x-sze,y,0);
    }
    break;
  case RenderEngine:: Up:
    if (fill) {
      gc.color(fillcolor);
      gc.tri(x,y+sze,0,
	     x+sze,y-sze,0,
	     x-sze,y-sze,0);
    }
    if (stroke) {
      gc.color(edgecolor);
      gc.triLine(x,y+sze,0,
		 x+sze,y-sze,0,
		 x-sze,y-sze,0);
    }
    break;
  case RenderEngine:: Down:
    if (fill) {
      gc.color(fillcolor);
      gc.tri(x,y-sze,0,
	     x+sze,y+sze,0,
	     x-sze,y+sze,0);
    }
    if (stroke) {
      gc.color(edgecolor);
      gc.triLine(x,y-sze,0,
		 x+sze,y+sze,0,
		 x-sze,y+sze,0);
    }
    break;      
  case RenderEngine:: Right:
    if (fill) {
      gc.color(fillcolor);
      gc.tri(x-sze,y+sze,0,
	     x+sze,y,0,
	     x-sze,y-sze,0);
    }
    if (stroke) {
      gc.color(edgecolor);
      gc.triLine(x-sze,y+sze,0,
		 x+sze,y,0,
		 x-sze,y-sze,0);
    }
    break;      
  case RenderEngine:: Left:
    if (fill) {
      gc.color(fillcolor);
      gc.tri(x+sze,y+sze,0,
	     x-sze,y,0,
	     x+sze,y-sze,0);
    }
    if (stroke) {
      gc.color(edgecolor);
      gc.triLine(x+sze,y+sze,0,
		 x-sze,y,0,
		 x+sze,y-sze,0);
    }
    break;      
  case RenderEngine:: Pentagram:
  case RenderEngine:: Hexagram:
    break;
  }
}