private void ComputeDisplayParametersForThumbnail()
{
if (currentConstellation == "Error")
{
return;
}
IPlace target = Constellations.ConstellationCentroids[currentConstellation];
Lineset boundries = Constellations.boundries[currentConstellation];
Vector3[] points = new Vector3[boundries.Points.Count];
Vector3[] pointsOut = new Vector3[boundries.Points.Count];
for (int i = 0; i < points.Length; i++)
{
points[i] = Coordinates.GeoTo3d(boundries.Points[i].Dec, boundries.Points[i].RA);
}
Matrix mat = Matrix.RotationY((float)(-(24 - (target.RA + 6)) / 12 * Math.PI));
mat = Matrix.Multiply(mat, Matrix.RotationX((float)(target.Lat / 180f * Math.PI)));
mat = Matrix.Multiply(mat, Matrix.Scaling(50, -50, 50));
mat = Matrix.Multiply(mat, Matrix.Translation(48, 22, 0));
// mat.Translate(58, 33,0);
Vector3.TransformCoordinate(points, ref mat, pointsOut);
lines = new PointF[points.Length + 1];
int index = 0;
foreach (Vector3 point in pointsOut)
{
lines[index++] = new PointF((float)point.X, (float)point.Y);
}
lines[index] = lines[0];
}
public void SetViewRect(Coordinates[] corners)
{
if (corners.Length != 4)
{
return;
}
if (string.IsNullOrEmpty(currentConstellation))
{
return;
}
bool change = false;
if (this.corners != null)
{
for (int i = 0; i < 4; i++)
{
if (this.corners[i] != corners[i])
{
change = true;
break;
}
}
}
else
{
change = true;
}
if (!change)
{
return;
}
this.corners = corners;
IPlace target = Constellations.ConstellationCentroids[currentConstellation];
Vector3[] points = new Vector3[4];
Vector3[] pointsOut = new Vector3[4];
for (int i = 0; i < 4; i++)
{
points[i] = Coordinates.GeoTo3d(this.corners[i].Dec, ((this.corners[i].RA / 24.0 * 360) - 180));
}
Matrix mat = Matrix.RotationY((float)(-(24 - (target.RA + 6)) / 12 * Math.PI));
mat = Matrix.Multiply(mat, Matrix.RotationX((float)(target.Lat / 180f * Math.PI)));
mat = Matrix.Multiply(mat, Matrix.Scaling(60, -60, 60));
mat = Matrix.Multiply(mat, Matrix.Translation(58, 33, 0));
Vector3.TransformCoordinate(points, ref mat, pointsOut);
fov = new PointF[5];
int index = 0;
foreach (Vector3 point in pointsOut)
{
fov[index++] = new PointF((float)point.X, (float)point.Y);
}
fov[4] = fov[0];
//Calculate view length
double a = fov[0].X - fov[1].X;
double b = fov[0].Y - fov[1].Y;
double c = Math.Sqrt(a * a + b * b);
RefreshHint();
}
public void InitializeD3D11(IntPtr wndHandle, int width, int height)
{
CloseD3D11();
_dxgiFactory = new Factory1();
_dxiAdapter = _dxgiFactory.Adapters[0];
_d3d11Device = new Device(_dxiAdapter, DeviceCreationFlags.BgraSupport, FeatureLevel.Level_11_0);
_dxgiDevice = _d3d11Device.QueryInterface <DXGIDevice>();
_dxgiDevice.MaximumFrameLatency = 1;
// Compile Vertex and Pixel shaders
var vertexShaderByteCode = ShaderBytecode.CompileFromFile("VSShader.fx", "main", "vs_4_0", ShaderFlags.None, EffectFlags.None);
_vertexShader = new VertexShader(_d3d11Device, vertexShaderByteCode);
var pixelShaderByteCode = ShaderBytecode.CompileFromFile("PSShader.fx", "main", "ps_4_0", ShaderFlags.None, EffectFlags.None);
_pixelShader = new PixelShader(_d3d11Device, pixelShaderByteCode);
InputElement[] inputElements = new InputElement[3];
inputElements[0] = new InputElement("POSITION", 0, Format.R32G32B32_Float, 0, 0, InputClassification.PerVertexData, 0);
inputElements[1] = new InputElement("TEXCOORD", 0, Format.R32G32_Float, 12, 0, InputClassification.PerVertexData, 0);
inputElements[2] = new InputElement("COLOR", 0, Format.R32G32B32A32_Float, 20, 0, InputClassification.PerVertexData, 0);
_inputLayout = new InputLayout(_d3d11Device, vertexShaderByteCode, inputElements);
BufferDescription vertexShaderDesc = new BufferDescription(Matrix.SizeInBytes * 2, BindFlags.ConstantBuffer, ResourceUsage.Default);
_vertexShaderConstans = new Buffer(_d3d11Device, vertexShaderDesc);
SamplerStateDescription samplerStateDescription = new SamplerStateDescription();
samplerStateDescription.Filter = Filter.MinMagMipLinear;
samplerStateDescription.AddressU = TextureAddressMode.Clamp;
samplerStateDescription.AddressV = TextureAddressMode.Clamp;
samplerStateDescription.AddressW = TextureAddressMode.Clamp;
samplerStateDescription.MipLodBias = 0.0f;
samplerStateDescription.MaximumAnisotropy = 1;
samplerStateDescription.ComparisonFunction = Comparison.Always;
samplerStateDescription.MinimumLod = 0.0f;
samplerStateDescription.MaximumLod = float.MaxValue;
_samplerState = new SamplerState(_d3d11Device, samplerStateDescription);
RasterizerStateDescription rasterizerStateDescription = new RasterizerStateDescription();
rasterizerStateDescription.IsAntialiasedLineEnabled = false;
rasterizerStateDescription.CullMode = CullMode.None;
rasterizerStateDescription.DepthBias = 0;
rasterizerStateDescription.DepthBiasClamp = 0.0f;
rasterizerStateDescription.IsDepthClipEnabled = true;
rasterizerStateDescription.FillMode = FillMode.Solid;
rasterizerStateDescription.IsFrontCounterClockwise = false;
rasterizerStateDescription.IsMultisampleEnabled = false;
rasterizerStateDescription.IsScissorEnabled = false;
rasterizerStateDescription.SlopeScaledDepthBias = 0.0f;
_rasterizerState = new RasterizerState(_d3d11Device, rasterizerStateDescription);
_d3d11Device.ImmediateContext.InputAssembler.InputLayout = _inputLayout;
_d3d11Device.ImmediateContext.VertexShader.SetShader(_vertexShader, null, 0);
_d3d11Device.ImmediateContext.VertexShader.SetConstantBuffers(0, 1, _vertexShaderConstans);
SwapChainDescription swapChainDescription = new SwapChainDescription();
swapChainDescription.ModeDescription.Width = width;
swapChainDescription.ModeDescription.Height = height;
swapChainDescription.ModeDescription.Format = Format.B8G8R8A8_UNorm;
swapChainDescription.ModeDescription.RefreshRate.Numerator = 1;
//pretty ugly
//its better to autodetect screen refresh rate
swapChainDescription.ModeDescription.RefreshRate.Denominator = 60;
swapChainDescription.SampleDescription.Count = 1;
swapChainDescription.SampleDescription.Quality = 0;
swapChainDescription.Usage = Usage.RenderTargetOutput;
swapChainDescription.BufferCount = 2;
swapChainDescription.ModeDescription.Scaling = DisplayModeScaling.Unspecified;
swapChainDescription.SwapEffect = SwapEffect.FlipSequential;
swapChainDescription.Flags = 0;
swapChainDescription.IsWindowed = true;
swapChainDescription.OutputHandle = wndHandle;
_swapChain = new SwapChain(_dxgiFactory, _d3d11Device, swapChainDescription);
_dxgiFactory.MakeWindowAssociation(wndHandle, WindowAssociationFlags.IgnoreAll);
Texture2D backBuffer = _swapChain.GetBackBuffer <Texture2D>(0);
_mainRenderTargerView = new RenderTargetView(_d3d11Device, backBuffer);
backBuffer.Dispose();
backBuffer = null;
Matrix projection = Matrix.Identity;
Matrix view = new Matrix();
/* Update the view matrix */
view[0, 0] = 2.0f / (float)width;
view[0, 1] = 0.0f;
view[0, 2] = 0.0f;
view[0, 3] = 0.0f;
view[1, 0] = 0.0f;
view[1, 1] = -2.0f / (float)height;
view[1, 2] = 0.0f;
view[1, 3] = 0.0f;
view[2, 0] = 0.0f;
view[2, 1] = 0.0f;
view[2, 2] = 1.0f;
view[2, 3] = 0.0f;
view[3, 0] = -1.0f;
view[3, 1] = 1.0f;
view[3, 2] = 0.0f;
view[3, 3] = 1.0f;
VertexShaderConstants vertexShaderConstansData = new VertexShaderConstants();
vertexShaderConstansData.projectionAndView = Matrix.Multiply(view, projection);
vertexShaderConstansData.model = Matrix.Identity;
_vertexShaderConstansData = Marshal.AllocHGlobal(Marshal.SizeOf(vertexShaderConstansData));
Marshal.StructureToPtr(vertexShaderConstansData, _vertexShaderConstansData, false);
_d3d11Device.ImmediateContext.UpdateSubresource(ref vertexShaderConstansData, _vertexShaderConstans);
ViewPort viewPort = new ViewPort();
viewPort.X = 0;
viewPort.Y = 0;
viewPort.Width = width;
viewPort.Height = height;
viewPort.MinDepth = 0.0f;
viewPort.MaxDepth = 1.0f;
_d3d11Device.ImmediateContext.Rasterizer.SetViewport(viewPort);
float minu, maxu, minv, maxv;
minu = 0.0f;
maxu = 1.0f;
minv = 0.0f;
maxv = 1.0f;
// Instantiate Vertex buiffer from vertex data
var vertices = Buffer.Create(_d3d11Device, BindFlags.VertexBuffer, new[]
{
//ul
0.0f, 0.0f, 0.0f, minu, minv, 1.0f, 1.0f, 1.0f, 1.0f,
//dl
0.0f, (float)height, 0.0f, minu, maxv, 1.0f, 1.0f, 1.0f, 1.0f,
//ur
(float)width, 0.0f, 0.0f, maxu, minv, 1.0f, 1.0f, 1.0f, 1.0f,
//dr
(float)width, (float)height, 0.0f, maxu, maxv, 1.0f, 1.0f, 1.0f, 1.0f
});
_d3d11Device.ImmediateContext.InputAssembler.SetVertexBuffers(0, new VertexBufferBinding(vertices, 36, 0));
_d3d11Device.ImmediateContext.Rasterizer.State = _rasterizerState;
_d3d11Device.ImmediateContext.PixelShader.SetShader(_pixelShader, null, 0);
_d3d11Device.ImmediateContext.PixelShader.SetSamplers(0, 1, _samplerState);
_d3d11Device.ImmediateContext.InputAssembler.PrimitiveTopology = PrimitiveTopology.TriangleStrip;
}