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// Copyright 2016 Florian Pigorsch. All rights reserved.
//
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package sm
import "fmt"
// TileProvider encapsulates all infos about a map tile provider service (name, url scheme, attribution, etc.)
type TileProvider struct {
Name string
Attribution string
TileSize int
URLPattern string // "%[1]s" => shard, "%[2]d" => zoom, "%[3]d" => x, "%[4]d" => y
Shards []string
}
func (t *TileProvider) getURL(shard string, zoom, x, y int) string {
return fmt.Sprintf(t.URLPattern, shard, zoom, x, y)
}
// NewTileProviderMapQuest creates a TileProvider struct for mapquest's tile service
func NewTileProviderMapQuest() *TileProvider {
t := new(TileProvider)
t.Name = "mapquest"
t.Attribution = "Maps (c) MapQuest; Data (c) OSM and contributors, ODbL"
t.TileSize = 256
t.URLPattern = "http://otile%[1]s.mqcdn.com/tiles/1.0.0/osm/%[2]d/%[3]d/%[4]d.png"
t.Shards = []string{"1", "2", "3", "4"}
return t
}
func newTileProviderThunderforest(name string) *TileProvider {
t := new(TileProvider)
t.Name = fmt.Sprintf("thunderforest-%s", name)
t.Attribution = "Maps (c) Thundeforest; Data (c) OSM and contributors, ODbL"
t.TileSize = 256
t.URLPattern = "https://%[1]s.tile.thunderforest.com/" + name + "/%[2]d/%[3]d/%[4]d.png"
t.Shards = []string{"a", "b", "c"}
return t
}
// NewTileProviderThunderforestLandscape creates a TileProvider struct for thundeforests's 'landscape' tile service
func NewTileProviderThunderforestLandscape() *TileProvider {
return newTileProviderThunderforest("landscape")
}
// NewTileProviderThunderforestOutdoors creates a TileProvider struct for thundeforests's 'outdoors' tile service
func NewTileProviderThunderforestOutdoors() *TileProvider {
return newTileProviderThunderforest("outdoors")
}
// NewTileProviderThunderforestTransport creates a TileProvider struct for thundeforests's 'transport' tile service
func NewTileProviderThunderforestTransport() *TileProvider {
return newTileProviderThunderforest("transport")
}
// NewTileProviderStamenToner creates a TileProvider struct for stamens' 'toner' tile service
func NewTileProviderStamenToner() *TileProvider {
t := new(TileProvider)
t.Name = "stamen-toner"
t.Attribution = "Maps (c) Stamen; Data (c) OSM and contributors, ODbL"
t.TileSize = 256
t.URLPattern = "http://%[1]s.tile.stamen.com/toner/%[2]d/%[3]d/%[4]d.png"
t.Shards = []string{"a", "b", "c", "d"}
return t
}
// NewTileProviderOpenTopoMap creates a TileProvider struct for opentopomaps's tile service
func NewTileProviderOpenTopoMap() *TileProvider {
t := new(TileProvider)
t.Name = "opentopomap"
t.Attribution = "Maps (c) OpenTopoMap [CC-BY-SA]; Data (c) OSM and contributors [ODbL]; Data (c) SRTM"
t.TileSize = 256
t.URLPattern = "http://%[1]s.tile.opentopomap.org/%[2]d/%[3]d/%[4]d.png"
t.Shards = []string{"a", "b", "c"}
return t
}
// GetTileProviders returns a map of all available TileProviders
func GetTileProviders() map[string]*TileProvider {
m := make(map[string]*TileProvider)
list := []*TileProvider{
NewTileProviderMapQuest(),
NewTileProviderThunderforestLandscape(),
NewTileProviderThunderforestOutdoors(),
NewTileProviderThunderforestTransport(),
NewTileProviderStamenToner(),
NewTileProviderOpenTopoMap()}
for _, tp := range list {
m[tp.Name] = tp
}
return m
}
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