/// <inheritdoc/>
public override XElement GetXml(string rootElemName, bool suppressDefaults)
{
XElement rootElem = new XElement(rootElemName, new XAttribute("dimX", DimX.ToString(CultureInfo.InvariantCulture)),
new XAttribute("dimY", DimY.ToString(CultureInfo.InvariantCulture)),
new XAttribute("dimZ", DimZ.ToString(CultureInfo.InvariantCulture)));
Validate(rootElem, XsdTypeName);
return(rootElem);
}
//Methods
/// <inheritdoc/>
protected override void Check()
{
if (DimX < 1)
{
throw new ArgumentException($"Invalid DimX {DimX.ToString(CultureInfo.InvariantCulture)}. DimX must be GE to 1.", "DimX");
}
if (DimY < 1)
{
throw new ArgumentException($"Invalid DimY {DimY.ToString(CultureInfo.InvariantCulture)}. DimY must be GE to 1.", "DimY");
}
if (DimZ < 1)
{
throw new ArgumentException($"Invalid DimZ {DimZ.ToString(CultureInfo.InvariantCulture)}. DimZ must be GE to 1.", "DimZ");
}
return;
}
private void CreareBoundingBox()
{
// Initialize minimum and maximum corners of the bounding box to max and min values
Vector3 Min = new Vector3(float.MaxValue, float.MaxValue, float.MaxValue);
Vector3 Max = new Vector3(float.MinValue, float.MinValue, float.MinValue);
// Loop all parts of the mesh to get bounding box size.
foreach (ModelMeshPart meshPart in Mesh.MeshParts)
{
// Vertex buffer parameters
int VertexStride = meshPart.VertexBuffer.VertexDeclaration.VertexStride;
int VertexBufferSize = meshPart.NumVertices * VertexStride;
// Get vertex data as float
float[] VertexData = new float[VertexBufferSize / sizeof(float)];
meshPart.VertexBuffer.GetData(VertexData);
// Iterate through vertices (possibly) growing bounding box, all calculations are done in world space
for (int i = 0; i < VertexBufferSize / sizeof(float); i += VertexStride / sizeof(float))
{
Vector3 Position = new Vector3(VertexData[i], VertexData[i + 1], VertexData[i + 2]);
Min = Vector3.Min(Min, Position);
Max = Vector3.Max(Max, Position);
}
}
BBox = new BoundingBox(Min, Max);
// Compute dimensions and areas.
ComputeDimensions();
// Create bounding box vertices.
Vector3[] Corners = BBox.GetCorners();
BBoxVertices = new List <VertexPositionColor[]>()
{
GetFaceVertices(Corners, new int[] { 5, 1, 2, 5, 2, 6 }), // right -> XPlus
GetFaceVertices(Corners, new int[] { 4, 0, 3, 4, 3, 7 }), // left -> XMinus
GetFaceVertices(Corners, new int[] { 4, 5, 1, 4, 1, 0 }), // bottom -> YPlus
GetFaceVertices(Corners, new int[] { 3, 2, 6, 3, 6, 7 }), // top -> YMinus
GetFaceVertices(Corners, new int[] { 0, 1, 2, 0, 2, 3 }), // front -> ZPlus
GetFaceVertices(Corners, new int[] { 4, 5, 6, 4, 6, 7 }), // back -> ZMinus
};
Console.WriteLine("\tCreated Bounding Box of size " + DimX.ToString("F3") + " x " + DimY.ToString("F3") + " x " + DimZ.ToString("F3") + ".");
Console.WriteLine("\t\tSurface area = " + GetBBoxTotalArea());
Console.WriteLine("\t\tFace areas = " + GetBBoxFaceArea(AAFace.XMinus) + ", " + GetBBoxFaceArea(AAFace.YMinus) + ", " + GetBBoxFaceArea(AAFace.ZMinus) + ".");
}
