public static SceneGraph PickClosestObject(SceneGraph root, Camera Camera, Matrix ProjMatrix, Vector2 ClickPoint, Vector2 ScreenDims)
{
// Convert screen pixel to view space
Vector2 viewSpacePixel = new Vector2((2.0f * ClickPoint.X / ScreenDims.X - 1.0f) / ProjMatrix.M11, (-2.0f * ClickPoint.Y / ScreenDims.Y + 1.0f) / ProjMatrix.M22);
Ray viewRay = new Ray(new Vector3(), new Vector3(viewSpacePixel.X, viewSpacePixel.Y, 1.0f));
// View Ray is now the thing we will use...
Matrix toWorld = Matrix.Invert(Camera.GetViewMatrix());
viewRay.Direction = Vector3.TransformNormal(viewRay.Direction, toWorld);
viewRay.Position = Vector3.TransformCoordinate(viewRay.Position, toWorld);
return pickClosestObject(root, Camera.GetViewMatrix(), viewRay);
}
/// <summary>
/// Initialize the scene, that's pretty much it.
/// </summary>
public void CreateNewScene(out Camera o_Camera, out SceneGraph o_SceneGraph)
{
if (!IsExecuted)
{
// Create the scene graph
SceneGraph = new SceneGraph(SlimDX.Matrix.Identity);
IsExecuted = true;
// Attach default terrain
var TerrainThing = new SceneGraph(
SlimDX.Matrix.Transformation(SlimDX.Vector3.Zero, SlimDX.Quaternion.Identity, new SlimDX.Vector3(1.0f, 1.0f, 1.0f), SlimDX.Vector3.Zero, SlimDX.Quaternion.Identity, new SlimDX.Vector3(0.0f, 0.0f, 1.0f))
);
TerrainThing.Renderable = new TerrainRenderable(100.0f, 100.0f, 5, 5);
SceneGraph.AttachChild("TerrainThing", TerrainThing);
// Attach test object
var CubeThing = new SceneGraph(
SlimDX.Matrix.Transformation(SlimDX.Vector3.Zero, SlimDX.Quaternion.Identity, new SlimDX.Vector3(1.0f, 1.0f, 1.0f), SlimDX.Vector3.Zero, SlimDX.Quaternion.Identity, new SlimDX.Vector3(38.0f, 1.0f, 1.0f))
);
CubeThing.Renderable = new TestRenderable();
SceneGraph.AttachChild("CubeThing", CubeThing);
// Create default camera
var testCamera = new FlightCamera(new SlimDX.Vector3(10.0f, 8.0f, 0.0f));
Camera = testCamera;
}
else
{
Debug.WriteLine("Already performed action CreateNewScene");
}
o_Camera = Camera;
o_SceneGraph = SceneGraph;
}
public void Render(SceneGraph SceneGraph, Camera Camera, SlimDX.Matrix ProjMatrix)
{
// Set input assembler information...
ImmediateContext.InputAssembler.InputLayout = InputLayout;
// TODO KAM: Shouldn't the primitive topology be set by the objects being rendered themselves?
ImmediateContext.InputAssembler.PrimitiveTopology = PrimitiveTopology.TriangleList;
// Build our vertex and index buffer...
var verts = GetAllVertices(SceneGraph);
var indices = GetAllIndices(SceneGraph);
var vertBufferDesc = new BufferDescription(TestEffectVertex.Stride * verts.Length,
ResourceUsage.Default, BindFlags.VertexBuffer, CpuAccessFlags.None, ResourceOptionFlags.None, 0);
Util.ReleaseCom(ref VertexBuffer); // TODO KAM: Make this dirtyable instead
VertexBuffer = new SlimDX.Direct3D11.Buffer(Device, new SlimDX.DataStream(verts, true, false), vertBufferDesc);
var indexBuferDesc = new BufferDescription(
sizeof(uint) * indices.Length,
ResourceUsage.Default,
BindFlags.IndexBuffer,
CpuAccessFlags.None,
ResourceOptionFlags.None,
0
);
Util.ReleaseCom(ref IndexBuffer);
IndexBuffer = new SlimDX.Direct3D11.Buffer(Device, new SlimDX.DataStream(indices, false, false), indexBuferDesc);
// Set our vertex and index buffers
ImmediateContext.InputAssembler.SetVertexBuffers(0, new VertexBufferBinding(VertexBuffer, TestEffectVertex.Stride, 0));
ImmediateContext.InputAssembler.SetIndexBuffer(IndexBuffer, SlimDX.DXGI.Format.R32_UInt, 0);
// Go through, render all nodes
var renderPass = EffectTechnique.GetPassByIndex(0);
renderPass.Apply(ImmediateContext);
int a, b;
RenderNode(SceneGraph, Camera, ProjMatrix, 0, 0, out a, out b);
}
private void RenderNode(SceneGraph Node, Camera Camera, SlimDX.Matrix ProjMatrix, int indexOffset, int vertexOffset, out int indicesConsumed, out int verticesConsumed)
{
var ic = indexOffset;
var vc = vertexOffset;
if (Node.Renderable != null)
{
WorldViewProj = Node.WorldTransform * Camera.GetViewMatrix() * ProjMatrix;
CPO_WorldViewProj.SetMatrix(WorldViewProj);
int nIndices = Node.Renderable.GetIndexList(EffectName()).Length;
int nVerts = Node.Renderable.GetVertexList(EffectName()).Length;
// TODO KAM: This is horribly inefficient, change this!
ImmediateContext.DrawIndexed(nIndices, indexOffset, vertexOffset);
ic += nIndices;
vc += nVerts;
}
foreach (var Child in Node.Children)
{
int cic, cvc;
RenderNode(Child.Value, Camera, ProjMatrix, indexOffset + ic, vertexOffset + vc, out cic, out cvc);
ic += cic;
vc += cvc;
}
indicesConsumed = ic;
verticesConsumed = vc;
}
public void Render(SceneGraph SceneGraph, Camera Camera, Matrix ProjMatrix)
{
// Set input assembler information...
ImmediateContext.InputAssembler.InputLayout = InputLayout;
ImmediateContext.InputAssembler.PrimitiveTopology = PrimitiveTopology.TriangleList;
// Since a menu node is a root node (according to the scene graph),
// just draw it without traversing or recursing or any of that mess.
var vertsList = new List<object>();
var indicesList = new List<uint>();
var sets = new List<Tuple<int, int>>();
vertsList.AddRange(SceneGraph.Renderable.GetVertexList(EffectName()));
indicesList.AddRange(SceneGraph.Renderable.GetIndexList(EffectName()));
sets.Add(new Tuple<int, int>(vertsList.Count, indicesList.Count));
// TODO KAM: Remove this hack.
if (vertsList.Count == 0)
{
return;
}
// Render buttons individually, both action and submenu buttons
var menuButtons = (SceneGraph.Renderable as Menu).MenuButtons;
for (var i = 0; i < menuButtons.Length; i++)
{
vertsList.AddRange(menuButtons[i].GetVertexList(EffectName()));
indicesList.AddRange(menuButtons[i].GetIndexList(EffectName()));
sets.Add(new Tuple<int, int>(vertsList.Count, indicesList.Count));
}
var vertexBufferDesc = new BufferDescription(MenuEffectVertex.Stride * vertsList.Count,
ResourceUsage.Default, BindFlags.VertexBuffer, CpuAccessFlags.None, ResourceOptionFlags.None, 0);
Util.ReleaseCom(ref VertexBuffer); // TODO KAM: Make this dirtyable instead
VertexBuffer = new SlimDX.Direct3D11.Buffer(Device, new SlimDX.DataStream(vertsList.Cast<MenuEffectVertex>().ToArray(), false, false), vertexBufferDesc);
var indexBufferDesc = new BufferDescription(
sizeof(uint) * indicesList.Count,
ResourceUsage.Default,
BindFlags.IndexBuffer,
CpuAccessFlags.None,
ResourceOptionFlags.None,
0);
Util.ReleaseCom(ref IndexBuffer);
IndexBuffer = new SlimDX.Direct3D11.Buffer(Device, new SlimDX.DataStream(indicesList.ToArray(), false, false), indexBufferDesc);
// Set buffers
ImmediateContext.InputAssembler.SetVertexBuffers(0, new VertexBufferBinding(VertexBuffer, MenuEffectVertex.Stride, 0));
ImmediateContext.InputAssembler.SetIndexBuffer(IndexBuffer, SlimDX.DXGI.Format.R32_UInt, 0);
Pass = Technique.GetPassByIndex(0);
CPO_BlendColor.Set(new Vector4(1.0f, 1.0f, 1.0f, 0.8f)); // 80% opacity
//
// Set depth stencil state
//
var existingState = ImmediateContext.OutputMerger.DepthStencilState;
ImmediateContext.OutputMerger.DepthStencilState = DepthDisabledState;
//
// Render background...
//
SRV_DiffuseMap.SetResource(TextureManager.GetInstance().GetResource(Device, SceneGraph.Renderable.GetTexturePath()));
Pass.Apply(ImmediateContext);
ImmediateContext.DrawIndexed(sets[0].Item2, 0, 0);
//
// Render each button...
//
for (var i = 0; i < menuButtons.Length; i++)
{
CPO_BlendColor.Set(menuButtons[i].GetBlendColor());
SRV_DiffuseMap.SetResource(TextureManager.GetInstance().GetResource(Device, menuButtons[i].GetTexturePath()));
Pass.Apply(ImmediateContext);
ImmediateContext.DrawIndexed(6, sets[i].Item2, sets[i].Item1);
}
//
// Restore depth stencil state
//
ImmediateContext.OutputMerger.DepthStencilState = existingState;
}
