public void CreateMesh(Terrain terrain, Rectangle r, Device device)
{
if (_vb != null)
{
Util.ReleaseCom(ref _vb);
_vb = null;
}
var halfWidth = 0.5f * terrain.Width;
var halfDepth = 0.5f * terrain.Depth;
var patchWidth = terrain.Width / (terrain.Renderer.NumPatchVertCols - 1);
var patchDepth = terrain.Depth / (terrain.Renderer.NumPatchVertRows - 1);
var vertWidth = terrain.Info.CellSpacing;
var vertDepth = terrain.Info.CellSpacing;
var du = 1.0f / (terrain.Renderer.NumPatchVertCols - 1) / Terrain.CellsPerPatch;
var dv = 1.0f / (terrain.Renderer.NumPatchVertRows - 1) / Terrain.CellsPerPatch;
_verts = new List <TerrainCP>();
var min = new Vector3(float.MaxValue);
var max = new Vector3(float.MinValue);
for (int z = r.Top, z0 = 0; z <= r.Bottom; z++, z0++)
{
var zp = halfDepth - r.Top / Terrain.CellsPerPatch * patchDepth - z0 * vertDepth;
for (int x = r.Left, x0 = 0; x <= r.Right; x++, x0++)
{
var xp = -halfWidth + r.Left / Terrain.CellsPerPatch * patchWidth + x0 * vertWidth;
var pos = new Vector3(xp, terrain.Height(xp, zp), zp);
min = Vector3.Minimize(min, pos);
max = Vector3.Maximize(max, pos);
var uv = new Vector2(r.Left * du + x0 * du, r.Top * dv + z0 * dv);
var v = new TerrainCP(pos, uv, new Vector2());
_verts.Add(v);
}
}
Bounds = new BoundingBox(min, max);
var vbd = new BufferDescription(
TerrainCP.Stride * _verts.Count,
ResourceUsage.Immutable,
BindFlags.VertexBuffer,
CpuAccessFlags.None,
ResourceOptionFlags.None,
0
);
_vb = new Buffer(device, new DataStream(_verts.ToArray(), false, false), vbd);
}
public void OnClick(MouseEventArgs e)
{
var x = (float)e.X / D3DApp.GD3DApp.Window.ClientSize.Width;
var y = (float)e.Y / D3DApp.GD3DApp.Window.ClientSize.Height;
var p = new Vector2(x, y);
if (Contains(ref p))
{
// convert minimap-space to world-space and set the camera target
var terrainX = _terrain.Width * p.X - _terrain.Width / 2;
var terrainZ = -_terrain.Depth * p.Y + _terrain.Depth / 2;
var cam = _viewCam as LookAtCamera;
if (cam != null)
{
cam.Target = new Vector3(terrainX, _terrain.Height(terrainX, terrainZ), terrainZ);
}
}
}
public void CreateMesh(Terrain terrain, Rectangle r, Device device) {
if (_vb != null) {
Util.ReleaseCom(ref _vb);
_vb = null;
}
var halfWidth = 0.5f * terrain.Width;
var halfDepth = 0.5f * terrain.Depth;
var patchWidth = terrain.Width / (terrain.Renderer.NumPatchVertCols - 1);
var patchDepth = terrain.Depth / (terrain.Renderer.NumPatchVertRows - 1);
var vertWidth = terrain.Info.CellSpacing;
var vertDepth = terrain.Info.CellSpacing;
var du = 1.0f / (terrain.Renderer.NumPatchVertCols - 1) / Terrain.CellsPerPatch;
var dv = 1.0f / (terrain.Renderer.NumPatchVertRows - 1) / Terrain.CellsPerPatch;
_verts = new List<TerrainCP>();
var min = new Vector3(float.MaxValue);
var max = new Vector3(float.MinValue);
for (int z = r.Top, z0 = 0; z <= r.Bottom; z++, z0++) {
var zp = halfDepth - r.Top / Terrain.CellsPerPatch * patchDepth - z0 * vertDepth;
for (int x = r.Left, x0 = 0; x <= r.Right; x++, x0++) {
var xp = -halfWidth + r.Left / Terrain.CellsPerPatch * patchWidth + x0 * vertWidth;
var pos = new Vector3(xp, terrain.Height(xp, zp), zp);
min = Vector3.Minimize(min, pos);
max = Vector3.Maximize(max, pos);
var uv = new Vector2(r.Left * du + x0 * du, r.Top * dv + z0 * dv);
var v = new TerrainCP(pos, uv, new Vector2());
_verts.Add(v);
}
}
Bounds = new BoundingBox(min, max);
var vbd = new BufferDescription(
TerrainCP.Stride * _verts.Count,
ResourceUsage.Immutable,
BindFlags.VertexBuffer,
CpuAccessFlags.None,
ResourceOptionFlags.None,
0
);
_vb = new Buffer(device, new DataStream(_verts.ToArray(), false, false), vbd);
}
public override bool Init() {
if ( ! base.Init()) return false;
Effects.InitAll(Device);
InputLayouts.InitAll(Device);
RenderStates.InitAll(Device);
_sky = new Sky(Device, "Textures/grasscube1024.dds", 5000.0f);
Patch.InitPatchData(Terrain.CellsPerPatch, Device);
var tii = new InitInfo {
HeightMapFilename = "Textures/terrain.raw",
LayerMapFilename0 = "textures/grass.dds",
LayerMapFilename1 = "textures/darkdirt.dds",
LayerMapFilename2 = "textures/stone.dds",
LayerMapFilename3 = "Textures/lightdirt.dds",
LayerMapFilename4 = "textures/snow.dds",
BlendMapFilename = "textures/blend.dds",
HeightScale = 50.0f,
HeightMapWidth = 2049,
HeightMapHeight = 2049,
CellSpacing = 0.5f
};
_terrain = new Terrain();
_terrain.Init(Device, ImmediateContext, tii);
_camera.Height = _terrain.Height;
_txMgr = new TextureManager();
_txMgr.Init(Device);
_treeModel = new BasicModel(Device, _txMgr, "Models/tree.x", "Textures");
_treeInstances = new List<BasicModelInstance>();
for (var i = 0; i < NumTrees; i++) {
var good = false;
var x = MathF.Rand(0, _terrain.Width);
var z = MathF.Rand(0, _terrain.Depth);
while (!good) {
if (_terrain.Height(x, z) < 12.0f) {
good = true;
}
x = MathF.Rand(-_terrain.Width/2, _terrain.Width/2);
z = MathF.Rand(-_terrain.Depth/2, _terrain.Depth/2);
}
var treeInstance = new BasicModelInstance(_treeModel) {
World = Matrix.RotationX(MathF.PI / 2) * Matrix.Translation(x, _terrain.Height(x, z), z)
};
_treeInstances.Add(treeInstance);
}
BuildInstancedBuffer();
return true;
}
