private static TileModel TransformM2Model(MapDoodadDefinition definition, M2Model m2model)
{
var model = new TileModel
{
Vertices = new Vector3[m2model.BoundingVertices.Length]
};
// Rotate
var origin = new Vector3(
(TerrainConstants.CenterPoint - definition.Position.X),
definition.Position.Y,
(TerrainConstants.CenterPoint - definition.Position.Z)
);
for (var i = 0; i < model.Vertices.Length; i++)
{
// Reverse the previos coord transform for the rotation.
var vector = TransformToIntermediateCoords(m2model.BoundingVertices[i]);
// Create the rotation matrices
var rotateX = Matrix.CreateRotationX(definition.OrientationC * RadiansPerDegree);
var rotateY = Matrix.CreateRotationY((definition.OrientationB - 90) * RadiansPerDegree);
var rotateZ = Matrix.CreateRotationZ(-definition.OrientationA * RadiansPerDegree);
// Rotate the vector
var rotatedVector = Vector3.Transform(vector, rotateY);
rotatedVector = Vector3.Transform(rotatedVector, rotateZ);
rotatedVector = Vector3.Transform(rotatedVector, rotateX);
var finalVector = rotatedVector + origin;
model.Vertices[i] = finalVector;
}
// Add the triangle indices to the model
model.Triangles = new Index3[m2model.BoundingTriangles.Length];
for (var i = 0; i < m2model.BoundingTriangles.Length; i++)
{
var tri = m2model.BoundingTriangles[i];
model.Triangles[i] = new Index3
{
Index0 = (short)tri[2],
Index1 = (short)tri[1],
Index2 = (short)tri[0]
};
}
// Calculate the boundingbox
model.Bounds = new BoundingBox(model.Vertices);
return model;
}
private static TileModel ExtractModel(MapDoodadDefinition definition)
{
var filePath = definition.FilePath;
var m2model = ExtractM2Model(filePath);
return TransformM2Model(definition, m2model);
}