Object Model: Geometry.GetBoundingBox

Geometry.GetBoundingBox

Introduced

v5.0

Description

Returns the center and extents of a bounding box of the Geometry object. If an input transform is specified, it is applied to the Geometry before the bounding box is calculated.

C# Syntax

Object Geometry.GetBoundingBox( Object in_pXfoObjectToBBoxSpace );

Scripting Syntax

oArray = Geometry.GetBoundingBox( [Transform] );

Return Value

1-dimensional Array containing six values: the X, Y and Z coordinates of the center, followed by the extents of the bounding box in the (local) X, Y, and Z axes.

Parameters

Parameter	Type	Description
Transform	SITransformation	Transform to be applied to the Geometry before the bounding box is calculated

Examples

1. JScript Example

/*
        Example using no input transform
*/
// Create and move (rotate and translate) a torus
NewScene( null, false ) ;
var oTorus = ActiveSceneRoot.AddGeometry( "Torus", "MeshSurface" ) ;
SelectObj( oTorus ) ;
Rotate(null, 45, 0, 0, siAbsolute, siPivot, siObj, siX, null, null, null, null, null, null, null, 0, null) ;
Translate(null, 3, 2, 1, siAbsolute, siPivot, siObj, siX, null, null, null, null, null, null, null, null, null, 0, null) ;
// Find the bounding box
var vba = new VBArray( oTorus.ActivePrimitive.Geometry.GetBoundingBox() ) ;
var jsa = vba.toArray() ;
// Report the (local) center and extents
Application.LogMessage( "center:"  + jsa[0] + ", " + jsa[1] + ", " + jsa[2] ) ;
Application.LogMessage( "extents:" + jsa[3] + ", " + jsa[4] + ", " + jsa[5] ) ;

2. JScript Example

// Example using an input transform to preserve scaling
//
// Create and move (rotate and translate) a torus
NewScene( null, false ) ;
var oTorus = ActiveSceneRoot.AddGeometry( "Torus", "MeshSurface" ) ;
SelectObj( oTorus ) ;
Scale(null, 0.5, 0.5, 1, siAbsolute, siGlobal, siObj, siY, null, null, null, null, null, null, null, 0, null) ;
oTransform = oTorus.Kinematics.Local.Transform ;
// Find the bounding box
var vba = new VBArray( oTorus.ActivePrimitive.Geometry.GetBoundingBox(oTransform) ) ;
var jsa = vba.toArray() ;
// Report the (local) center and extents
Application.LogMessage( "center:" + jsa[0] + ", " + jsa[1] + ", " + jsa[2] ) ;
Application.LogMessage( "extents:" + jsa[3] + ", " + jsa[4] + ", " + jsa[5] ) ;
// Build a cube that shows the bounding box
var oCube = ActiveSceneRoot.AddPrimitive("Cube") ;
oCube.length = 1 ;
oCube.PosX = jsa[0] ;
oCube.PosY = jsa[1] ;
oCube.PosZ = jsa[2] ;
oCube.sclx = jsa[3] ;
oCube.scly = jsa[4] ;
oCube.sclz = jsa[5] ;