looking for JScript for computing distance

[gibby]

Hello,

I'm looking for a JScript that computes the distance between two points selected with the point select tool, preferably something that breaks it down into x, y, and z components. I could even write my own if someone could tell me how to refer to the two points in JScript and how to get at their x, y, and z coordinates.

Please and thanks.

[scaron]

i would get the two point indices then use

x3dobject.activeprimitive.geometry.points(index).p osition

which is a vector type with x y and z properties

then use the subtract method of a vector to get the distance between this two indices...

http://softimage.wiki.avid.com/sdkdocs/Point.htm#Point

[kim aldis]

try this (assumes you have a selection):


if ( selection(0).type != "pntSubComponent" ) {
logmessage( "Must select points" );
} else {
var oSel = selection(0).SubComponent.ComponentCollection;
if ( oSel.count != 2 ) {
logmessage( "Must select 2 points" );
} else {
var l = CalculateDistance( oSel );
logmessage( "Distance = " + l );
}
}

function CalculateDistance( oComponentCollection ) {


var oP1 = oComponentCollection (0).position;
var oP2 = oComponentCollection (1).position;

oP1.SubInPlace( oP2 );

//dx = oP1.x;
//dy = oP1.y;
//dz = oP1.z;

return oP1.length();


}

[scaron]

use kim's way... that skips the point indice query and goes straight to what you need using the component collection.

i also left out the length method of a vector. subtracting alone wouldn't give you a scalar value you need.

s

[gibby]

That's exactly what I need. Thanks, both of you.

I do have a follow up question though.

In testing this script, at first I tried selecting two points on two seperate objects (two cubes) but it seems that I can only select points on one object. If I select a point on the first cube and then another point on the next cube, it tells me "Must select 2 points". Anybody know why this would be?

Sorry if this seem obvious, but I'm new.

[kim aldis]

XSI treats objects as separate selections, subelements on the same object are treated as single selections. You'll need to add a check for more than one object selected in the selection object (selection.count) and take appropriate action. Probably most of your code will end up being selection checking.

[gibby]

OK, so I take it that my work will be mainly in the section


if ( selection(0).type != "pntSubComponent" ) {
logmessage( "Must select points" );


and instead of printing out an error message, I have to check for other objects, correct?

[scaron]

is there an echo in here?

[patrick.n]

There's an echo in a few threads now.
Bad Clint999! Stop it!

[GeneCrucean]

I think that user is a spam (http://www.spam.com)bot.

This post... http://community.softimage.com/showthread.php?p=6180#post6180 is also a direct copy of an earlier one.