public void RenderWireFrame(Camera camera, params Mesh[] meshes)
{
// To understand this part, please read the prerequisites resources
Matrix4d viewMatrix = Matrix.LookAtLHd(camera.Position, camera.Target, Vector3d.UnitY);
//Matrix4d projectionMatrix = Matrix.PerspectiveFovLHd(0.78f,
// (double)bmp.PixelWidth / (double)bmp.PixelHeight,
// 0.01, 1.0);
//test orthogonal view
Matrix4d projectionMatrix;
Matrix.OrthoOffCenterLHd(-2, 2, -2, 2, 0.01f, 1, out projectionMatrix);
foreach (Mesh mesh in meshes)
{
// Beware to apply rotation before translation
Vector3d pos = mesh.Position;
Matrix4d worldMatrix = Matrix4d.RotationYawPitchRoll(mesh.Rotation.Y, mesh.Rotation.X, mesh.Rotation.Z) *
Matrix4d.CreateTranslation(pos.X, pos.Y, pos.Z);
Matrix4d worldView = worldMatrix * viewMatrix;
Matrix4d transformMatrix = worldMatrix * viewMatrix * projectionMatrix;
foreach (Face face in mesh.Faces)
{
// Face-back culling
//var transformedNormal = Vector3.TransformNormals(face.Normal, worldView);
//if (transformedNormal.Z >= 0)
//{
// continue;
//}
Vertex vertexA = mesh.Vertices[face.A];
Vertex vertexB = mesh.Vertices[face.B];
Vertex vertexC = mesh.Vertices[face.C];
Vertex pixelA = this.Project(vertexA, transformMatrix, worldMatrix);
Vertex pixelB = this.Project(vertexB, transformMatrix, worldMatrix);
Vertex pixelC = this.Project(vertexC, transformMatrix, worldMatrix);
DrawBline(pixelA.Coordinates, pixelB.Coordinates);
DrawBline(pixelB.Coordinates, pixelC.Coordinates);
DrawBline(pixelC.Coordinates, pixelA.Coordinates);
//float color = 1.0f;
//this.DrawTriangle(pixelA, pixelB, pixelC, new Color4(color, color, color, 1), mesh.Texture);
}
}
}
