int
X11_Arc(int x0, int y0, int radius, double theta, double delta_theta)
{
int t1, t2;
if (0 && !cp_getvar("x11lineararcs", CP_BOOL, NULL))
linear_arc(x0, y0, radius, theta, delta_theta);
if (DEVDEP(currentgraph).isopen) {
t1 = (int) (64 * (180.0 / M_PI) * theta);
t2 = (int) (64 * (180.0 / M_PI) * delta_theta);
if (t2 == 0)
return 0;
XDrawArc(display, DEVDEP(currentgraph).window, DEVDEP(currentgraph).gc,
x0 - radius,
currentgraph->absolute.height - radius - y0,
(Dimension) (2 * radius), (Dimension) (2 * radius), t1, t2);
}
return 0;
}
int
X11_Arc(int x0, int y0, int radius, double theta1, double theta2)
{
int t1, t2;
if (!cp_getvar("x11lineararcs", VT_BOOL, (char *) &t1)) {
linear_arc(x0, y0, radius, theta1, theta2);
}
if (DEVDEP(currentgraph).isopen) {
if (theta1 >= theta2)
theta2 = 2 * M_PI + theta2;
t1 = 64 * (180.0 / M_PI) * theta1;
t2 = 64 * (180.0 / M_PI) * theta2 - t1;
if (t2 == 0)
return 0;
XDrawArc(display, DEVDEP(currentgraph).window, DEVDEP(currentgraph).gc,
x0 - radius,
currentgraph->absolute.height - radius - y0,
2 * radius, 2 * radius, t1, t2);
}
return 0;
}
