Get Rectangle coordinates of PickBox in a View3d

[tokynom13]

Hello, so I want to get the position of upper_right corner of the rectangle aflter the function UiDocument.Selection.PickBox after was launch. I assume that:

• P1 is PickedBox.Min
• P2 is PickedBox.Max

 

what I have done so far (but unfortunately doesn't produce what I want)

var pickedBox = UiDocument.Selection.PickBox(PickBoxStyle.Directional);
var min = pickedBox.Min;
var max = pickedBox.Max;
var vec = max.Subtract(min);
var plane = Plane.CreateByNormalAndOrigin(ActiveView.ViewDirection, ActiveView.Origin);
plane.Project(min, out var uvMin, out var _);
plane.Project(max, out var uvMax, out var _);
var hyp = uvMin.DistanceTo(uvMax);
var angle = uvMax.Subtract(uvMin).AngleTo(UV.BasisU);
var du = hyp * Math.Cos(angle);
var dv = hyp * Math.Sin(angle);
var projectedPoint1 = plane.Origin + ((uvMin.U + du) * plane.XVec) + ((uvMin.V + dv) * plane.YVec);

Can someone help me please?

[jeremy_tammik · Accepted solution]

Interesting question.Thank you.

First, however, read the PickedBox documentation. Min is not the upper left, but the lower left rear:

https://www.revitapidocs.com/2024/976cde81-988a-d8bf-fc3f-07f62b18b488.htm

	Name	Description
	Max	Maximum coordinates (upper-right-front corner of the pick box).
	Min	Minimum coordinates (lower-left-rear corner of the pick box).

Maybe that will already clarify everything?

[tokynom13]

Thank you for your response! Yeah, I have misunderstood what is the Min and Max, my bad 😅