example4.cpp

/**
 * @file   example4.cpp
 * @author Sebastien Fourey (GREYC)
 *
 * @brief  Illustration of the use of Board, ShapeList and Group.
 *
 * This source code is part of the Board project, a C++ library whose
 * purpose is to allow simple drawings in EPS, FIG or SVG files.
 * Copyright (C) 2007 Sebastien Fourey <https://fourey.users.greyc.fr>
 */
#include <Board.h>

using namespace LibBoard;

int main(int, char *[])
{
  Board board;
  board.clear(Color(200, 255, 200));

  board.setLineWidth(0.01);         // For Board drawing methods.
  Style::setDefaultLineWidth(0.02); // For all Shapes constructors.

  for (double x = -20.0; x <= 20; x += 1.0)
    for (double y = -20.0; y <= 20; y += 1.0) {
      board << Dot(x, y, Color::Black);
      board.setPenColorRGBf(1.0, 0.0, 0.0);
      board.drawDot(x + 0.2, y + 0.2);
    }

  Group g;
  g << Line(-5, 2, 5, 2, Color::Red) << LibBoard::rectangle(-5, 2, 1, 4, Color::Null, Color::Blue) << LibBoard::rectangle(4, 2, 1, 4, Color::Null, Color::Blue)
    << Ellipse(0, 0, 5, 2, Color::Red, Color::Null);

  Group g2(g);
  Group g3(g);
  g2.translate(0, 6);
  g3.translate(0, -6);

  Group f;
  f << g << g2 << g3;
  f.rotateDeg(45.0);
  board << f;

  ShapeList l;
  Ellipse c = LibBoard::circle(2, 5, 1.8, Color::Red, Color::Green);
  for (int i = 0; i < 5; ++i) {
    l << c.scale(1, 0.5);
  }
  for (double x = -20, a = 0; x < 20; x += 4, a += 0.3) {
    board << l.rotated(a).translate(x, 10);
  }

  g.clear();

  Polyline r1 = LibBoard::rectangle(2, 2, 3, 1, Color::Black, Color::Null);
  Polyline r2 = r1.translated(-8, -8);
  for (double alpha = 0; alpha < 2 * M_PI; alpha += 0.2) {
    g << r1.rotated(alpha);
    board << r2.rotated(alpha, r2[0]);
  }

  board.saveEPS("example4.eps", PageSize::A4);
  board.saveFIG("example4.fig", PageSize::A4);

  board.scaleToWidth(10, UseLineWidth);
  board.saveSVG("example4.svg", PageSize::BoundingBox, 0.0, Unit::Centimeter);
}