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 Execute()
{
var context = Services.ECS.GetContext <MainContext>();
var mainCameraEntity = new Entity();
if (!context.TryGetEntity <MainCameraComponent>(ref mainCameraEntity))
{
return;
}
var cameraComponent = new CameraComponent();
if (!mainCameraEntity.TryGetComponent(ref cameraComponent))
{
return;
}
var deviceEntity = new Entity();
if (!context.TryGetEntity <DeviceComponent>(ref deviceEntity))
{
return;
}
var deviceComponent = deviceEntity.GetComponent <DeviceComponent>();
deviceComponent.Bmp.Lock();
Clear(ref deviceComponent);
var viewMatrix = Matrix.LookAtLH(ToDxVector3(cameraComponent.Position), ToDxVector3(cameraComponent.Target), SharpDX.Vector3.Up);
var projectionMatrix = Matrix.PerspectiveFovRH(0.78f, (float)deviceComponent.Bmp.PixelWidth / deviceComponent.Bmp.PixelHeight,
0.01f, 1.0f);
var emptyTransformComponent = new TransformComponent();
foreach (var entityId in context.GetAllEntities <MeshRendererComponent>())
{
var entity = context.GetEntity(entityId);
var transform = emptyTransformComponent;
if (!entity.TryGetComponent(ref transform))
{
continue;
}
var mesh = entity.GetComponent <MeshRendererComponent>().Mesh;
// Beware to apply rotation before translation
var worldMatrix = Matrix.Scaling(transform.Scale.X, transform.Scale.Y, transform.Scale.Z) * Matrix.RotationYawPitchRoll(transform.Rotation.Y,
transform.Rotation.X, transform.Rotation.Z) *
Matrix.Translation(ToDxVector3(transform.Position));
var transformMatrix = worldMatrix * viewMatrix * projectionMatrix;
//Console.WriteLine(_farZ + " " + _nearZ);
/*
* Parallel.ForEach(mesh.Triangles, (triangle) =>
* {
* var vertexA = ToDxVector3(mesh.Vertices[triangle.A]);
* var vertexB = ToDxVector3(mesh.Vertices[triangle.B]);
* var vertexC = ToDxVector3(mesh.Vertices[triangle.C]);
*
* var pixelA = Project(ref deviceComponent, vertexA, transformMatrix);
* var pixelB = Project(ref deviceComponent, vertexB, transformMatrix);
* var pixelC = Project(ref deviceComponent, vertexC, transformMatrix);
*
* //var colorValue = (byte)((0.25f + (index++ % mesh.Triangles.Length) * 0.75f / mesh.Triangles.Length) * 255);
* //var color = new Color { R = colorValue, G = colorValue, B = colorValue, A = 255 };
*
*
*
* if (!(pixelA.Y == pixelB.Y && pixelA.Y == pixelC.Y))
* {
* if ((triangle.A == 0 && triangle.B == 1 && triangle.C == 2) || (triangle.A == 4 && triangle.B == 6 && triangle.C == 7))
* {
* DrawTriangle(ref deviceComponent, pixelA, pixelB, pixelC, Colors.Gray);
* }
*
*
* }
* else
* {
* //DrawBLine(ref deviceComponent, new ScreenPoint(pixelA, vertexA.Z), new ScreenPoint(pixelB, vertexB.Z));
* //DrawBLine(ref deviceComponent, new ScreenPoint(pixelB, vertexB.Z), new ScreenPoint(pixelC, vertexC.Z));
* //DrawBLine(ref deviceComponent, new ScreenPoint(pixelC, vertexC.Z), new ScreenPoint(pixelA, vertexA.Z));
* }
*
* //continue;
* //_currentColor = Colors.Red;
* DrawBLine(ref deviceComponent, pixelA, pixelB, Colors.Red);
* DrawBLine(ref deviceComponent, pixelB, pixelC, Colors.Red);
* DrawBLine(ref deviceComponent, pixelC, pixelA, Colors.Red);
* });
*/
for (var i = 0; i < mesh.Triangles.Length; i++)
{
var triangle = mesh.Triangles[i];
var vertexA = ToDxVector3(mesh.Vertices[triangle.A]);
var vertexB = ToDxVector3(mesh.Vertices[triangle.B]);
var vertexC = ToDxVector3(mesh.Vertices[triangle.C]);
var pixelA = Project(ref deviceComponent, vertexA, transformMatrix);
var pixelB = Project(ref deviceComponent, vertexB, transformMatrix);
var pixelC = Project(ref deviceComponent, vertexC, transformMatrix);
//var colorValue = (byte)((0.25f + (index++ % mesh.Triangles.Length) * 0.75f / mesh.Triangles.Length) * 255);
//var color = new Color { R = colorValue, G = colorValue, B = colorValue, A = 255 };
if (!(pixelA.Y == pixelB.Y && pixelA.Y == pixelC.Y))
{
//if (i == 8 || i == 9)
//if ((triangle.A == 0 && triangle.B == 1 && triangle.C == 2) || (triangle.A == 4 && triangle.B == 6 && triangle.C == 7))
{
DrawTriangle(ref deviceComponent, pixelA, pixelB, pixelC, Colors.Gray);
}
}
else
{
//DrawBLine(ref deviceComponent, new ScreenPoint(pixelA, vertexA.Z), new ScreenPoint(pixelB, vertexB.Z));
//DrawBLine(ref deviceComponent, new ScreenPoint(pixelB, vertexB.Z), new ScreenPoint(pixelC, vertexC.Z));
//DrawBLine(ref deviceComponent, new ScreenPoint(pixelC, vertexC.Z), new ScreenPoint(pixelA, vertexA.Z));
}
//continue;
//_currentColor = Colors.Red;
DrawBLine(ref deviceComponent, pixelA, pixelB, Colors.Red);
DrawBLine(ref deviceComponent, pixelB, pixelC, Colors.Red);
DrawBLine(ref deviceComponent, pixelC, pixelA, Colors.Red);
}
}
Present(ref deviceComponent);
deviceComponent.Bmp.AddDirtyRect(new Int32Rect(0, 0,
deviceComponent.Bmp.PixelWidth, deviceComponent.Bmp.PixelHeight));
deviceComponent.Bmp.Unlock();
}
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();
}