int main(){
Simple_window win6(Point(100, 100), 600, 400, "Open polyline");
Open_polyline opl;
opl.add(Point(100, 100));
opl.add(Point(150, 200));
opl.add(Point(250, 250));
opl.add(Point(300, 200));
win6.attach(opl);
win6.wait_for_button(); // 表示！
}
void draw_lines() const{
T dist = (m_r2 - m_r1) / m_count;
T r = m_r1;
Open_polyline op;
for(int i = 0; i < m_count; ++i) {
op.add(Point(m_orig.x + int(r * m_xscale), m_orig.y - int(m_f(r) * m_yscale)));
r += dist;
}
op.draw_lines();
}
int main()
try {
const int xmax = 1200;
const int ymax = 600;
const int x_orig = 100;
const int y_orig = ymax - 100;
const Point orig(x_orig,y_orig);
const int r_min = 0;
const int r_max = 20;
const int x_scale = 20;
const int y_scale = 200;
Point tl(300,50);
Simple_window win(tl,xmax,ymax,"");
const int xlength = xmax - 200;
const int ylength = ymax - 200;
Axis x(Axis::x,Point(100,y_orig),xlength,xlength/x_scale,"1 == 20 pixels");
x.set_color(Color::red);
win.attach(x);
Axis y(Axis::y,Point(x_orig,500),ylength,ylength/y_scale,"1 == 200 pixels");
y.set_color(Color::red);
win.attach(y);
Open_polyline opl;
opl.add(Point(orig.x,orig.y-y_scale));
win.attach(opl);
for (int i = 1; i<=50; ++i) {
ostringstream ss;
ss << "Leibniz series, element " << i;
win.set_label(ss.str());
int x = opl.point(i-1).x + x_scale;
int y = orig.y - leibniz(i) * y_scale;
opl.add(Point(x,y));
win.wait_for_button();
}
}
catch (exception& e) {
cerr << "exception: " << e.what() << endl;
keep_window_open();
}
catch (...) {
cerr << "exception\n";
keep_window_open();
}
void Lines_window::next() {
int x = next_x.get_int();
int y = next_y.get_int();
lines.add(Point{x,y});
ostringstream os;
os << '(' << x << ',' << y << ')';
xy_out.put(os.str());
redraw();
}
void Lines_window::next()
{
int x = next_x.get_int();
int y = next_y.get_int();
lines.add(Point{x, y});
// update current position readout:
ostringstream ss;
ss << '(' << x << ',' << y << ')';
xy_out.put(ss.str());
redraw();
}
void Lines_window::next()
{
int x = next_x.get_int();
int y = next_y.get_int();
lines.add(Point(x, y));
stringstream ss;
ss << '(' << x << ',' << y << ')';
xy_out.put(ss.str());
redraw();
}
void change(Color c) {lines.set_color(c); redraw();}
void change(Color c) { lines.set_color(c); }
void change_style(Line_style s) { lines.set_style(s); }
void change_style(Line_style l) {lines.set_style(l);redraw();};
