public void Render(TerrainTile tile, TerrainGlobal terrainGlobal, Matrix4 projection, Matrix4 view, Vector3 eye)
{
Vector3 xformeye = Vector4.Transform(new Vector4(eye, 0.0f), tile.InverseModelMatrix).Xyz;
// construct our top-level quadtree node
var root = new QuadTreeNode()
{
TopLeft = new QuadTreeVertex()
{
Position = new Vector3(0f, 0f, 0f)
//Position = Vector3.Transform(new Vector3(0f, 0f, 0f), tile.ModelMatrix)
},
TopRight = new QuadTreeVertex()
{
Position = new Vector3((float)tile.Width, 0f, 0f)
//Position = Vector3.Transform(new Vector3((float)tile.Width, 0f, 0f), tile.ModelMatrix)
},
BottomLeft = new QuadTreeVertex()
{
Position = new Vector3(0f, 0f, (float)tile.Height)
//Position = Vector3.Transform(new Vector3(0f, 0f, (float)tile.Height), tile.ModelMatrix)
},
BottomRight = new QuadTreeVertex()
{
Position = new Vector3((float)tile.Width, 0f, (float)tile.Height)
//Position = Vector3.Transform(new Vector3((float)tile.Width, 0f, (float)tile.Height), tile.ModelMatrix)
},
TileSize = tile.Width // assume width == height
};
// check to see if we're completely outside the far detail radius
if (!root.IsViewerInDetailRange(xformeye, this.DistantTileRadius))
{
var distrenderer = (IPatchRenderer)fullTileDistantRenderer;
//float distancepastdetail = (xformeye.Xz - new Vector2((float)tile.Width * 0.5f,(float)tile.Height * 0.5f)).Length - ;
distrenderer.Width = tile.Width / 16;
distrenderer.Height = distrenderer.Width;
//distrenderer.DetailScale = (float)this.TileSize / (float)tileDetailRenderer.Width;
distrenderer.Scale = 1.0f;
distrenderer.Offset = new Vector2(0.0f, 0.0f);
fullTileDistantRenderer.Render(tile, terrainGlobal, projection, view, eye);
}
else // check inner detail radius
{
if (!root.IsViewerInDetailRange(xformeye, this.DetailRadius))
{
// HACK because we're using the same patch renderer as the detail patches and it keeps state
(fullTileNearRenderer as IPatchRenderer).Scale = 1.0f;
(fullTileNearRenderer as IPatchRenderer).Offset = Vector2.Zero;
(fullTileNearRenderer as IPatchRenderer).Width = tile.Width;
(fullTileNearRenderer as IPatchRenderer).Height = tile.Height;
fullTileNearRenderer.Render(tile, terrainGlobal, projection, view, eye);
}
else
{
root.Render(tile, terrainGlobal, projection, view, eye, xformeye, this.DetailRadius, this.subTileRenderer, this.subTileDetailRenderer);
}
}
}