57 lines
1.0 KiB
Go
57 lines
1.0 KiB
Go
package orb
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// MultiPolygon is a set of polygons.
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type MultiPolygon []Polygon
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// GeoJSONType returns the GeoJSON type for the object.
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func (mp MultiPolygon) GeoJSONType() string {
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return "MultiPolygon"
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}
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// Dimensions returns 2 because a MultiPolygon is a 2d object.
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func (mp MultiPolygon) Dimensions() int {
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return 2
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}
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// Bound returns a bound around the multi-polygon.
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func (mp MultiPolygon) Bound() Bound {
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if len(mp) == 0 {
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return emptyBound
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}
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bound := mp[0].Bound()
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for i := 1; i < len(mp); i++ {
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bound = bound.Union(mp[i].Bound())
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}
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return bound
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}
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// Equal compares two multi-polygons.
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func (mp MultiPolygon) Equal(multiPolygon MultiPolygon) bool {
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if len(mp) != len(multiPolygon) {
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return false
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}
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for i, p := range mp {
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if !p.Equal(multiPolygon[i]) {
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return false
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}
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}
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return true
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}
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// Clone returns a new deep copy of the multi-polygon.
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func (mp MultiPolygon) Clone() MultiPolygon {
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if mp == nil {
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return nil
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}
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nmp := make(MultiPolygon, 0, len(mp))
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for _, p := range mp {
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nmp = append(nmp, p.Clone())
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}
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return nmp
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}
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