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moved geom.go into this repo

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This commit is contained in:
Stephen McQuay 2013-09-03 23:32:57 -07:00
parent abb7daf18d
commit 1610816e8a
1 changed files with 11 additions and 0 deletions
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11
vectorpoint.go
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@ -69,3 +69,14 @@ func (v Vector2d) Normalize() Vector2d {
m := v.Mag() m := v.Mag()
return Vector2d{v.X / m, v.Y / m} return Vector2d{v.X / m, v.Y / m}
} }
func Move(d1, d2 Point2d, velocity float64, timeDelta float64) Point2d {
v := d2.Sub(d1)
v_norm := v.Normalize()
v_scaled := v_norm.Scale(velocity * timeDelta)
return d1.Add(v_scaled)
}
func Distance(p1, p2 Point2d) float64 {
return p1.Sub(p2).Mag()
}