public void Reload()
{
var meshData = Actor.mMesh.mMeshData;
var heightMapStream = new FileStream(mHeightMapPath, FileMode.Open, FileAccess.Read);
var heightmap = Texture2D.FromStream(mGraphics, heightMapStream);
heightMapStream.Close();
if (heightmap.Height == mHeight && heightmap.Width == mWidth)
{
var textureStream = new FileStream(mTexturePath, FileMode.Open, FileAccess.Read);
meshData.mMaterials[0].mDiffuseMap = Texture2D.FromStream(mGraphics, textureStream);
textureStream.Close();
LoadVertices(heightmap);
Actor.mMesh.UpdateData();
mGrass.Generate();
}
}
public Terrain(ContentManager content, GraphicsDevice device, string heightMapPath, string texturePath)
{
mContent = content;
mGraphics = device;
mHeightMapPath = heightMapPath;
mTexturePath = texturePath;
var meshData = new MeshData();
var heightMapStream = new FileStream(heightMapPath, FileMode.Open, FileAccess.Read);
var heightmap = Texture2D.FromStream(device, heightMapStream);
heightMapStream.Close();
mWidth = heightmap.Width;
mHeight = heightmap.Height;
meshData.mVertices = new VertexPositionTexture[mWidth * mHeight];
meshData.mIndices = new int[(mWidth * 2 + 2) * (mHeight - 1)];
var subData = new MeshData.SubData();
var material = new Material();
var textureStream = new FileStream(texturePath, FileMode.Open, FileAccess.Read);
material.mDiffuseMap = Texture2D.FromStream(device, textureStream);
material.DiffuseMapStream = textureStream;
material.mGraphicsDevice = device;
textureStream.Close();
material.mDiffuseColor = new Vector3(1.0f);
subData.mIndicesOffset = 0;
subData.mMaterialIndex = 0;
subData.mNumPrimitives = (heightmap.Width * 2 + 2) * (heightmap.Height - 1);
meshData.mMaterials.Add(material);
meshData.mSubDatas.Add(subData);
meshData.mPrimitiveType = PrimitiveType.TriangleStrip;
meshData.mTotalNumPrimitives = (heightmap.Width * 2 + 2) * (heightmap.Height - 1);
meshData.mBoundingSphere.Radius = (float)Math.Sqrt(Math.Pow(heightmap.Width / 2.0f, 2) + Math.Pow(heightmap.Height / 2.0f, 2));
meshData.mIsTerrain = true;
Actor = new Actor(new Mesh.Mesh(mGraphics, meshData), null)
{
mCastShadow = false
};
Size = mWidth;
LoadVertices(heightmap);
LoadIndices();
Actor.mMesh.UpdateData();
mGrass = new Grass(this);
mGrass.Generate();
}
