Measuring distance between two points

[Ranger Fox]

Is there a library function I can call to measure the distance between two points? I know I can get the Player's ObjectLocation, so would like to use that as one point and find the distance between that and another zone's point.

[+davidloew]

Is there a library function I can call to measure the distance between two points? I know I can get the Player's ObjectLocation, so would like to use that as one point and find the distance between that and another zone's point.

There is a library function to do this. It's called Wherigo.VectorToPoint(zonePoint1, zonePoint2). It returns a distance and bearing objects. Here's what I tested in the emulator:

 

=Wherigo.VectorToPoint(Player.ObjectLocation, zoneGroundspeak.Points[1])

>>Distance(114.46612302836, 'm') 324.01455693943 <--- distance, bearing

 

The two parms are zonepoints:

 

ZonePoint(47.615414035258, -122.34195828438, Distance(0, 'm'))

ZonePoint(47.614582, -122.341062, Distance(0, 'm'))

 

Here's an example of finding the distance then creating a new point from that distance and bearing using a point from the zone.

 

local d,b = Wherigo.VectorToPoint(Player.ObjectLocation, zoneGroundspeak.Points[1])

print(d)

print(

local newPoint = Wherigo.TranslatePoint(Player.ObjectLocation, d,

print(newPoint)

 

Output (in reverse order):

>>ZonePoint(47.615414035261, -122.34195828439, Distance(0, 'm'))

>>324.01455693943

>>Distance(114.46612302836, 'm')

 

TranslatePoint uses Distance and Bearing: newpoint = TranslatePoint(pointToUse, distance, bearing)

 

David

Edited May 15, 2008 by davidloew

[Ranger Fox]

Thank you, David. That'll be very useful in what I'm developing.

 

And to everyone else: I hope you'll like the surprise when I post the cartridge. If you're attending GW6, I'll have it with me and I'll be at the event most of the day. It's a Play Anywhere cartridge.

[Ranger Fox]

What's the property accessor to get the Distance object's distance?

 

I have tried the following:

Distance.DistanceRange

Distance.DistanceRangeU

Distance.Distance

Distance.Range

Distance.Dist

Distance.Units

Distance.Value

 

I thought I could get the units by the following:

Distance.DistanceRangeUOM

However, I get an error if I try to print it in a MessageBox.

 

I know I'm working with a valid distance object because I can print it out using print(Distance), with "Distance" in all examples meaning my Distance object's variable name.

[+davidloew]

What's the property accessor to get the Distance object's distance?

 

I have tried the following:

Distance.DistanceRange

Distance.DistanceRangeU

Distance.Distance

Distance.Range

Distance.Dist

Distance.Units

Distance.Value

 

I thought I could get the units by the following:

Distance.DistanceRangeUOM

However, I get an error if I try to print it in a MessageBox.

 

I know I'm working with a valid distance object because I can print it out using print(Distance), with "Distance" in all examples meaning my Distance object's variable name.

There's a Get accessor on the Distance Object. So:

 

local d = Wherigo.VectorToPoint(Player.ObjectLocation, zoneGroundspeak.Points[1])

print(d("m"))

print(d("ft"))

print(d("mi"))

print(d("km"))

 

Output (Reverse order)

 

0.11446612302836

0.071125951336915

375.54502362974

114.46612302836

 

David