Created
July 27, 2019 15:11
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2D Camera for OpenTK with zoom, scale, translation and rotation
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| public class Camera | |
| { | |
| public Vector3 Position; | |
| public Vector3 Rotation; | |
| public Vector3 Scale = Vector3.One/3; | |
| public float Size = 1; | |
| public static Camera Main = new Camera(); | |
| public void Update(float deltaTime) | |
| { | |
| if (Input.GetKey(OpenTK.Input.Key.W)) | |
| { | |
| Position -= new Vector3(0, 1, 0)*deltaTime; | |
| } | |
| if (Input.GetKey(OpenTK.Input.Key.S)) | |
| { | |
| Position += new Vector3(0, 1, 0)*deltaTime; | |
| } | |
| if (Input.GetKey(OpenTK.Input.Key.A)) | |
| { | |
| Position -= new Vector3(1, 0, 0)*deltaTime; | |
| } | |
| if (Input.GetKey(OpenTK.Input.Key.D)) | |
| { | |
| Position += new Vector3(1, 0, 0)*deltaTime; | |
| } | |
| if (Input.GetMouseButton(OpenTK.Input.MouseButton.Left)) | |
| { | |
| Rotation.Z += Input.MouseYDelta*deltaTime; | |
| } | |
| Size += -Input.MouseScrollDelta * deltaTime; | |
| Size = Size.Clamp(0, 1000); | |
| } | |
| public void Render(int width, int height) | |
| { | |
| GL.MatrixMode(MatrixMode.Projection); | |
| GL.LoadIdentity(); | |
| Matrix4 proj = | |
| Matrix4.CreateTranslation(new Vector3(-Position.X*width, -Position.Y*height,-Position.Z))* | |
| Matrix4.CreateScale(Scale.X, -Scale.Y, Scale.Z) * Matrix4.CreateRotationZ(Rotation.Z)* | |
| Matrix4.CreateOrthographic(width*Size, height*Size, 0, 1000) | |
| ; | |
| GL.LoadMatrix(ref proj); | |
| GL.MatrixMode(MatrixMode.Modelview); | |
| } | |
| } |
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