public void Render(Camera camera, params Mesh[] meshes)
{
var viewMatrix = Matrix.LookAtLH(camera.Position, camera.Target, camera.Up);
var projectionMatrix = Matrix.PerspectiveFovLH(0.78f, (float)width / height, 0.01f, 1.0f);
foreach (var mesh in meshes)
{
var worldMatrix = Matrix.RotationYawPitchRoll(mesh.Rotation.Y, mesh.Rotation.X, mesh.Rotation.Z) *
Matrix.Translation(mesh.Position);
var worldView = worldMatrix * viewMatrix;
var transformMatrix = worldView * projectionMatrix;
Parallel.For(0, mesh.Faces.Length, faceIndex =>
{
var face = mesh.Faces[faceIndex];
// Face-back culling
//var transformedNormal = Vector3.TransformNormal(face.Normal, worldView);
//if (transformedNormal.Z >= 0)
//{
// return;
//}
// Render this face
var vertexA = mesh.Vertices[face.A];
var vertexB = mesh.Vertices[face.B];
var vertexC = mesh.Vertices[face.C];
var pixelA = Project(vertexA, transformMatrix, worldMatrix);
var pixelB = Project(vertexB, transformMatrix, worldMatrix);
var pixelC = Project(vertexC, transformMatrix, worldMatrix);
//var color = 0.25f + (faceIndex % mesh.Faces.Length) * 0.75f / mesh.Faces.Length;
var color = 1.0f;
if (Wireframe)
{
Algorithm.Line(pixelA.Coordinates.X, pixelA.Coordinates.Y, pixelB.Coordinates.X,
pixelB.Coordinates.Y, Color.White, DrawPoint);
Algorithm.Line(pixelB.Coordinates.X, pixelB.Coordinates.Y, pixelC.Coordinates.X,
pixelC.Coordinates.Y, Color.White, DrawPoint);
Algorithm.Line(pixelC.Coordinates.X, pixelC.Coordinates.Y, pixelA.Coordinates.X,
pixelA.Coordinates.Y, Color.White, DrawPoint);
}
else
{
DrawTriangle(pixelA, pixelB, pixelC, new Color4(color, color, color, 1), mesh.Texture);
}
});
}
}
public void Update()
{
//Calculate deltaTime
var passedTime = (float)(DateTime.Now - _prevFrameTime).Milliseconds / 1000;
//Determine direction of travel
var moveDirection = Vector2.Zero;
moveDirection.X = Keyboard.IsKeyDown(Key.D) ? 1.0f : 0.0f;
if (moveDirection.X.Equals(0.0f))
{
moveDirection.X = -(Keyboard.IsKeyDown(Key.A) ? 1.0f : 0.0f);
}
moveDirection.Y = Keyboard.IsKeyDown(Key.W) ? 1.0f : 0.0f;
if (moveDirection.Y.Equals(0.0f))
{
moveDirection.Y = -(Keyboard.IsKeyDown(Key.S) ? 1.0f : 0.0f);
}
var currPos = Mouse.GetPosition(Application.Current.MainWindow);
//Mouse Rotation
var mouseLook = Vector2.Zero;
if (Mouse.RightButton == MouseButtonState.Pressed)
{
var mouseMovement = currPos - _prevMousePos;
//Debug.Log(LogLevel.Info,mouseMovement.ToString());
//mouseLook.X = (float) (mouseMovement.X/Math.Abs(mouseMovement.X));
//mouseLook.Y = (float)(mouseMovement.Y / Math.Abs(mouseMovement.Y));
mouseLook.X = (float)(mouseMovement.X);
mouseLook.Y = (float)(mouseMovement.Y);
}
//Calculate rotation
_totalYaw += mouseLook.X * ROTATION_SPEED * passedTime;
_totalPitch += mouseLook.Y * ROTATION_SPEED * passedTime;
Rotating = Matrix.RotationYawPitchRoll(_totalYaw, _totalPitch, 0);
Translation = Matrix.Translation(EyePosition);
Scale = Matrix.Scaling(1.0f);
//Update Forward,Right and up based on the current rotation of the Camera
Forward = Vector3.TransformCoordinate(Vector3.ForwardLH, Rotating);
Right = Vector3.TransformCoordinate(Vector3.Right, Rotating);
UpDirection = Vector3.Cross(Forward, Right);
EyePosition += moveDirection.X * Right * MOVE_SPEED * passedTime;
EyePosition += moveDirection.Y * Forward * MOVE_SPEED * passedTime;
var viewDirection = (Vector3)Vector3.Transform(Vector3.ForwardLH, Rotating);
viewDirection.Normalize();
TargetPosition = EyePosition + viewDirection;
_prevFrameTime = DateTime.Now;
_prevMousePos = currPos;
//Debug.Log(LogLevel.Info,EyePosition.ToString());
}
