D3DX8.ComputeBoundingBox

Computes a bounding box.

object.ComputeBoundingBox( _ 
    PointsFVF As Any, _ 
    NumVertices As Long, _ 
    FVF As Long, _ 
    MinArray As D3DVECTOR, _ 
    MaxArray As D3DVECTOR)

Parts

object

Object expression that resolves to a D3DX8 object.

PointsFVF

Buffer containing the vertex data around which to calculate the bounding box.

NumVertices

Number of vertices.

FVF

Combination of flexible vertex format flags that describes the vertex format.

MinArray

D3DVECTOR type, describing the returned lower-left corner of the bounding box. See Remarks.

MaxArray

D3DVECTOR type, describing the returned upper-right corner of the bounding box. See Remarks.

Error Codes

If the method fails, an error is raised and Err.Number can be set to D3DERR_INVALIDCALL.

For information on trapping errors, see the Microsoft® Visual Basic® Error Handling topic.

Remarks

The D3DVECTOR values returned by ComputeBoundingBox are xmin, xmax, ymin, ymax, zmin, and zmax. Thus, the following defines the corners of the bounding box.

xmax, ymax, zmax
xmax, ymax, zmin
xmax, ymin, zmax
xmax, ymin, zmin
xmin, ymax, zmax
xmin, ymax, zmin
xmin, ymin, zmax
xmin, ymin, zmin

The depth of the bounding box in the z direction is zmax - zmin, in the y direction is ymax - ymin, and in the x direction is xmax - xmin. For example, with the following minimum and maximum vectors, min (-1, -1, -1) and max (1, 1, 1), the bounding box is defined in the following manner.

 1,  1,  1
 1,  1, -1
 1, -1,  1
 1, -1, -1
-1,  1,  1
-1,  1, -1
-1, -1,  1
-1, -1, -1

See Also

D3DX8.ComputeBoundingBoxFromMesh