SlimDX Camera setup - directx

Question

Please, tell me what I'm doing wrongly:
that's my Camera class
public class Camera
{
public Matrix view;
public Matrix world;
public Matrix projection;
public Vector3 position;
public Vector3 target;
public float fov;
public Camera(Vector3 pos, Vector3 tar)
{
this.position = pos;
this.target = tar;
view = Matrix.LookAtLH(position, target, Vector3.UnitY);
projection = Matrix.PerspectiveFovLH(fov, 1.6f, 0.001f, 100.0f);
world = Matrix.Identity;
}
}
that's my Constant buffer struct:
struct ConstantBuffer
{
internal Matrix mWorld;
internal Matrix mView;
internal Matrix mProjection;
};
and here I'm drawing the triangle and setting camera:
x+= 0.01f;
camera.position = new Vector3(x, 0.0f, 0.0f);
camera.view = Matrix.LookAtLH(camera.position, camera.target, Vector3.UnitY);
camera.projection = Matrix.PerspectiveFovLH(camera.fov, 1.6f, 0.0f, 100.0f);
var buffer = new Buffer(device, new BufferDescription
{
Usage = ResourceUsage.Default,
SizeInBytes = sizeof(ConstantBuffer),
BindFlags = BindFlags.ConstantBuffer
});
////////////////////////////// camera setup
ConstantBuffer cb;
cb.mProjection = Matrix.Transpose(camera.projection);
cb.mView = Matrix.Transpose(camera.view);
cb.mWorld = Matrix.Transpose(camera.world);
var data = new DataStream(sizeof(ConstantBuffer), true, true);
data.Write(cb);
data.Position = 0;
context.UpdateSubresource(new DataBox(0, 0, data), buffer, 0);
//////////////////////////////////////////////////////////////////////
// set the shaders
context.VertexShader.Set(vertexShader);
context.PixelShader.Set(pixelShader);
// draw the triangle
context.Draw(4, 0);
swapChain.Present(0, PresentFlags.None);
Please, if you can see what's wrong, tell me! :) I have spent two days writing this already..
Attempt the second:
#paiden I initialized fov now ( thanks very much :) ) but still no effect (now it's fov = 1.5707963267f;) and #Nico Schertler , thank you too, I put it in use by
context.VertexShader.SetConstantBuffer(buffer, 0);
context.PixelShader.SetConstantBuffer(buffer, 0);
but no effect still... probably my .fx file is wrong? for what purpose do I need this:
cbuffer ConstantBuffer : register( b0 ) { matrix World; matrix View; matrix Projection; }
Attepmpt the third:
#MHGameWork
Thank you very much too, but no effect still ;)
If anyone has 5 minutes time, I can just drop source code to his/her e-mail and then we will publish the answer... I guess it will help much to some newbies like me :)
unsafe
{
x+= 0.01f;
camera.position = new Vector3(x, 0.0f, 0.0f);
camera.view = Matrix.LookAtLH(camera.position, camera.target, Vector3.UnitY);
camera.projection = Matrix.PerspectiveFovLH(camera.fov, 1.6f, 0.01f, 100.0f);
var buffer = new Buffer(device, new BufferDescription
{
Usage = ResourceUsage.Default,
SizeInBytes = sizeof(ConstantBuffer),
BindFlags = BindFlags.ConstantBuffer
});
THE PROBLEM NOW - I SEE MY TRIANGLE BUT THE CAMERA DOESN'T MOVE

Answer 1

You have set your camera's nearplane to 0. This makes all the value in your matrix divide by zero, so you get a matrix filled with 'NAN's
Use a near plane value of about 0.01 in your case, it will solve the problem

Answer 2

I hope you still need help. Here is my camera class, which can be used, and can be easily moved around the scene using mouse/keyboard.
http://pastebin.com/JtiUSiHZ
Call the "TakeALook()" method in each frame (or when you move the camera).
You can move around it with the "CameraMove" method. It takes a Vector3 - where you want to move your camera (dont give it huge values, I use 0,001f for each frame)
And with the "CameraRotate()" you can turn it around - it take a Vector2 as a Left-Right and Up-Down rotation.
Its pretty easy. I use EventHandlers to call there two function, but feel free to edit as you wish.