func test() {
g1 := geos.Must(geos.FromWKT("LINESTRING(0 0, 3 3, 3 2, 4 2, 7 5)"))
g2 := geos.Must(geos.FromWKT("LINESTRING(0 10, 1 0, 0 10, 10 10)"))
g3 := geos.Must(geos.FromWKT("POINT(5 5)"))
g4 := geos.Must(g3.Buffer(1))
g5 := geos.Must(geos.FromWKT("MULTIPOINT(5 6, 6 6, 3 8, 7 8)"))
example("test.png", g1, g2, g4, g3, g5)
}
func ex9() {
wkt := []string{
"LINESTRING (2 10, 3 10, 4 9, 5 8)",
"LINESTRING (5 8, 6 6, 6 5)",
"LINESTRING (6 5, 9 6, 10 7, 11 9)",
"LINESTRING (11 9, 11 10, 10 11)",
"LINESTRING (6 5, 3 4, 2 3)",
"LINESTRING (2 3, 1.5 2.5, 1 1, 1 0)",
"LINESTRING (1 0, 0 0, 0 -1, 1 -2)",
"LINESTRING (1 -2, 2 -2, 3 -1, 3 0, 1 0)",
"LINESTRING (6 5, 6 3, 6.5 2.5)",
"LINESTRING (6.5 2.5, 7.5 2, 8.5 1.5)",
"LINESTRING (8.5 1.5, 9 0.5, 10 0.5, 11 1.5)",
}
var linestrings []*geos.Geometry
for i := range wkt {
linestrings = append(linestrings, geos.Must(geos.FromWKT(wkt[i])))
}
example("example9-unmerged-linestrings.png", linestrings...)
merged := geos.Must(geos.Must(geos.NewCollection(geos.MULTILINESTRING, linestrings...)).LineMerge())
example("example9-merged-linestrings.png", merged)
}
func ex8() {
l := geos.Must(geos.FromWKT("LINESTRING (0 2, 6 2, 3 4, 4.5 8, 1 8, 3 0)"))
b := geos.Must(l.Buffer(0.5))
example("example8-buffer.png", b, l)
}
func ex2() {
a := geos.Must(geos.FromWKT("LINEARRING (0 3, 2 3, 3 1, 1 0, 0 1.5, 0 3)"))
b := geos.Must(geos.FromWKT("LINEARRING (1 2, 1.5 4, 3.5 4, 4.5 2.5, 1 2)"))
example("example2-a-b.png", a, b)
}
func ex1() {
example("example1.png", geos.Must(geos.FromWKT("LINESTRING (0 0, 10 10, 20 20)")))
}
func ex10() {
l := geos.Must(geos.FromWKT("LINESTRING (0 2, 6 2, 3 4, 4.5 8, 1 8, 3 0)"))
b := geos.Must(l.ConvexHull())
example("example10-convex-hull.png", b, l)
}
ex3()
ex4()
ex5()
ex6()
ex7()
ex8()
ex9()
ex10()
}
func ex1() {
example("example1.png", geos.Must(geos.FromWKT("LINESTRING (0 0, 10 10, 20 20)")))
}
var (
a = geos.Must(geos.FromWKT("POLYGON ((0 3, 2 3, 3 1, 1 0, 0 1.5, 0 3))"))
b = geos.Must(geos.FromWKT("POLYGON ((1 2, 1.5 4, 3.5 4, 4.5 2.5, 1 2))"))
)
func ex2() {
a := geos.Must(geos.FromWKT("LINEARRING (0 3, 2 3, 3 1, 1 0, 0 1.5, 0 3)"))
b := geos.Must(geos.FromWKT("LINEARRING (1 2, 1.5 4, 3.5 4, 4.5 2.5, 1 2)"))
example("example2-a-b.png", a, b)
}
func ex3() {
example("example3-intersection.png", a, b, geos.Must(a.Intersection(b)))
}
func ex4() {
example("example4-union.png", a, b, geos.Must(a.Union(b)))
func ExampleGeometry_LineInterpolatePoint() {
line := geos.Must(geos.FromWKT("LINESTRING(25 50, 100 125, 150 190)"))
pt := geos.Must(line.LineInterpolatePoint(0.20))
fmt.Println(pt)
// Output: POINT (51.5974135047432014 76.5974135047432014)
}