func ExampleGeneral_a() {
// Example 58.a, p. 404.
const p = math.Pi / 180
ls, c, _, ψ := sundial.General(40*p, 70*p, 1, 50*p)
fmt.Printf("Hours: %d", ls[0].Hour)
for _, l := range ls[1:] {
fmt.Printf(", %d", l.Hour)
}
fmt.Println()
for _, l := range ls {
if l.Hour == 11 {
fmt.Printf("%d: x = %.4f y = %.4f\n",
l.Hour, l.Points[2].X, l.Points[2].Y)
}
if l.Hour == 14 {
fmt.Printf("%d: x = %.4f y = %.4f\n",
l.Hour, l.Points[6].X, l.Points[6].Y)
}
}
fmt.Printf("x0 = %+.4f\n", c.X)
fmt.Printf("y0 = %+.4f\n", c.Y)
fmt.Printf("ψ = %.4f\n", ψ/p)
// Output:
// Hours: 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19
// 11: x = -2.0007 y = -1.1069
// 14: x = -0.0390 y = -0.3615
// x0 = +3.3880
// y0 = -3.1102
// ψ = 12.2672
}
func ExampleGeneral_b() {
// Example 58.b, p. 404.
const p = math.Pi / 180
ls, c, _, ψ := sundial.General(
unit.AngleFromDeg(-35),
unit.AngleFromDeg(160),
1,
unit.AngleFromDeg(90))
for _, l := range ls {
if l.Hour == 12 {
fmt.Printf("%d: x = %+.4f y = %+.4f\n",
l.Hour, l.Points[5].X, l.Points[5].Y)
}
if l.Hour == 15 {
fmt.Printf("%d: x = %+.4f y = %+.4f\n",
l.Hour, l.Points[3].X, l.Points[3].Y)
}
}
fmt.Printf("x0 = %+.4f\n", c.X)
fmt.Printf("y0 = %+.4f\n", c.Y)
fmt.Printf("ψ = %.4f\n", ψ.Deg())
// Output:
// 12: x = +0.3640 y = -0.7410
// 15: x = -0.8439 y = -0.9298
// x0 = +0.3640
// y0 = +0.7451
// ψ = 50.3315
}
func ExampleGeneral_a() {
// Example 58.a, p. 404.
ls, c, _, ψ := sundial.General(
unit.AngleFromDeg(40),
unit.AngleFromDeg(70),
1,
unit.AngleFromDeg(50))
fmt.Printf("Hours: %d", ls[0].Hour)
for _, l := range ls[1:] {
fmt.Printf(", %d", l.Hour)
}
fmt.Println()
for _, l := range ls {
if l.Hour == 11 {
fmt.Printf("%d: x = %.4f y = %.4f\n",
l.Hour, l.Points[2].X, l.Points[2].Y)
}
if l.Hour == 14 {
fmt.Printf("%d: x = %.4f y = %.4f\n",
l.Hour, l.Points[6].X, l.Points[6].Y)
}
}
fmt.Printf("x0 = %+.4f\n", c.X)
fmt.Printf("y0 = %+.4f\n", c.Y)
fmt.Printf("ψ = %.4f\n", ψ.Deg())
// Output:
// Hours: 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19
// 11: x = -2.0007 y = -1.1069
// 14: x = -0.0390 y = -0.3615
// x0 = +3.3880
// y0 = -3.1102
// ψ = 12.2672
}
func ExampleGeneral_c() {
// Example 58.c, p. 405.
const p = math.Pi / 180
ls, _, _, _ := sundial.General(40*p, 160*p, 1, 75*p)
fmt.Printf("Hours: %d", ls[0].Hour)
for _, l := range ls[1:] {
fmt.Printf(", %d", l.Hour)
}
fmt.Println()
// Output:
// Hours: 5, 6, 13, 14, 15, 16, 17, 18, 19
}
func ExampleGeneral_c() {
// Example 58.c, p. 405.
ls, _, _, _ := sundial.General(
unit.AngleFromDeg(40),
unit.AngleFromDeg(160),
1,
unit.AngleFromDeg(75))
fmt.Printf("Hours: %d", ls[0].Hour)
for _, l := range ls[1:] {
fmt.Printf(", %d", l.Hour)
}
fmt.Println()
// Output:
// Hours: 5, 6, 13, 14, 15, 16, 17, 18, 19
}
