mirror of https://github.com/tidwall/tile38.git
43 lines
1.3 KiB
Go
43 lines
1.3 KiB
Go
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package geojson
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import (
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"testing"
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)
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func TestSegmentIntersectsCirclePointsInside(t *testing.T) {
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// either start or end is within the circle
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start := Position{X: -122.4408378, Y: 37.7341129, Z: 0}
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end := Position{X: -122.4408378, Y: 37.733, Z: 0}
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center := Position{X: -122.4409, Y: 37.734, Z: 0}
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meters := 30.0
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if !SegmentIntersectsCircle(start, end, center, meters) {
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t.Fatal("!")
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}
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center = Position{X: -122.4409, Y: 37.733, Z: 0}
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if !SegmentIntersectsCircle(start, end, center, meters) {
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t.Fatal("!")
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}
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}
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func TestSegmentIntersectsCirclePointsOutside(t *testing.T) {
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// neither start nor end are within the circle, but the segment intersects it
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start := Position{X: -122.4408378, Y: 37.7341129, Z: 0}
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end := Position{X: -122.4408378, Y: 37.733, Z: 0}
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center := Position{X: -122.4412, Y: 37.7335, Z: 0}
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meters := 70.0
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if !SegmentIntersectsCircle(start, end, center, meters) {
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t.Fatal("!")
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}
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}
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func TestSegmentIntersectsCircleLineButNotSegment(t *testing.T) {
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// the line of the segment intersects the circle, but the segment does not
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start := Position{X: -122.4408378, Y: 37.7341129, Z: 0}
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end := Position{X: -122.4408378, Y: 37.733, Z: 0}
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center := Position{X: -122.4412, Y: 37.737, Z: 0}
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meters := 70.0
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if SegmentIntersectsCircle(start, end, center, meters) {
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t.Fatal("!")
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}
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}
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