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package simplify_test
import (
"fmt"
"github.com/paulmach/orb"
"github.com/paulmach/orb/planar"
"github.com/paulmach/orb/simplify"
)
func ExampleDouglasPeuckerSimplifier() {
// +
// \
// \
// +
// \
// \
// +-----+
original := orb.LineString{{0, 0}, {2, 0}, {1, 1}, {0, 2}}
// low threshold just removes the colinear point
reduced := simplify.DouglasPeucker(0.0).Simplify(original.Clone())
fmt.Println(reduced)
// high threshold just leaves start and end
reduced = simplify.DouglasPeucker(2).Simplify(original)
fmt.Println(reduced)
// Output:
// [[0 0] [2 0] [0 2]]
// [[0 0] [0 2]]
}
func ExampleRadialSimplifier() {
// +
// \
// \
// +
// |
// +--+
original := orb.LineString{{0, 0}, {1, 0}, {1, 1}, {0, 2}}
// will remove the points within 1.0 of the previous point
// in this case just the second point
reduced := simplify.Radial(planar.Distance, 1.0).Simplify(original.Clone())
fmt.Println(reduced)
// will remove the 2nd and 3rd point since it's within 1.5 or the first point.
reduced = simplify.Radial(planar.Distance, 1.5).Simplify(original)
fmt.Println(reduced)
}
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