Weird appearance for a 3D XNA ground
- by Belos
I wanted to add a ground so I can know the position of a helicopter in the world. But the ground appeared in a weird way:
http://i.stack.imgur.com/yTSuW.jpg
The ground had the following texture:
http://i.stack.imgur.com/pdpxB.png
EDIT: Sorry, I forgot to post the code:
public class ImportModel
{
public Vector3 Position { get; set; }
public Vector3 Rotation { get; set; }
public Vector3 Scale { get; set; }
Model Model;
Matrix[] modeltransforms;
GraphicsDevice GraphicDevice;
ContentManager Content;
BoundingSphere sphere;
bool boundingimplemented = false;
public ImportModel(string model, GraphicsDevice gd, ContentManager cm, Vector3 position, Vector3 rot, Vector3 sca)
{
GraphicDevice = gd;
Content = cm;
Position = position;
Rotation = rot;
Scale = sca;
Model = Content.Load<Model>(model);
modeltransforms = new Matrix[Model.Bones.Count];
Model.CopyAbsoluteBoneTransformsTo(modeltransforms);
}
public void Draw(Camera camera)
{
Matrix baseworld = Matrix.CreateScale(Scale) * Matrix.CreateFromYawPitchRoll(Rotation.Y, Rotation.X, Rotation.Z) * Matrix.CreateTranslation(Position);
foreach (ModelMesh mesh in Model.Meshes)
{
Matrix localworld = modeltransforms[mesh.ParentBone.Index] * baseworld;
foreach (ModelMeshPart meshpart in mesh.MeshParts)
{
BasicEffect effect = (BasicEffect)meshpart.Effect;
effect.World = localworld;
effect.View = camera.View;
effect.Projection = camera.Projection;
effect.EnableDefaultLighting();
}
mesh.Draw();
}
}
public BoundingSphere BoundingSphere
{
get
{
if (!boundingimplemented)
{
foreach (ModelMesh mesh in Model.Meshes)
{
BoundingSphere transformed = mesh.BoundingSphere.Transform(
modeltransforms[mesh.ParentBone.Index]);
sphere = BoundingSphere.CreateMerged(sphere, transformed);
}
Matrix worldTransform = Matrix.CreateScale(Scale) * Matrix.CreateTranslation(Position);
BoundingSphere transforme = sphere;
transforme = transforme.Transform(worldTransform);
return transforme;
}
else
{
Matrix worldTransform = Matrix.CreateScale(Scale) * Matrix.CreateTranslation(Position);
BoundingSphere transformed = sphere;
transformed = transformed.Transform(worldTransform);
return transformed;
}
}
}
}
Then I call the class from the Game1 class:
ImportModel ground = new ImportModel("ground", GraphicsDevice, Content, Vector3.Zero, Vector3.Zero, new Vector3(20f));
EDIT2:This is how the scene looks from top:
i.stack.imgur.com/Hs983.jpg
