private static unsafe void OnMouseMove(IMouse mouse, Vector2 position)
{
var lookSensitivity = 0.1f;
if (LastMousePosition == default)
{
LastMousePosition = position;
}
else
{
var xOffset = (position.X - LastMousePosition.X) * lookSensitivity;
var yOffset = (position.Y - LastMousePosition.Y) * lookSensitivity;
LastMousePosition = position;
CameraYaw += xOffset;
CameraPitch -= yOffset;
//We don't want to be able to look behind us by going over our head or under our feet so make sure it stays within these bounds
CameraPitch = Math.Clamp(CameraPitch, -89.0f, 89.0f);
CameraDirection.X = MathF.Cos(MathHelper.DegreesToRadians(CameraYaw)) * MathF.Cos(MathHelper.DegreesToRadians(CameraPitch));
CameraDirection.Y = MathF.Sin(MathHelper.DegreesToRadians(CameraPitch));
CameraDirection.Z = MathF.Sin(MathHelper.DegreesToRadians(CameraYaw)) * MathF.Cos(MathHelper.DegreesToRadians(CameraPitch));
CameraFront = Vector3.Normalize(CameraDirection);
}
}
private static unsafe void OnRender(double deltaTime)
{
Gl.Enable(EnableCap.DepthTest);
Gl.Clear((uint)(ClearBufferMask.ColorBufferBit | ClearBufferMask.DepthBufferBit));
Vao.Bind();
Texture.Bind();
Shader.Use();
Shader.SetUniform("uTexture0", 0);
//Use elapsed time to convert to radians to allow our cube to rotate over time
var difference = (float)(window.Time * 100);
var model = Matrix4x4.CreateRotationY(MathHelper.DegreesToRadians(difference)) * Matrix4x4.CreateRotationX(MathHelper.DegreesToRadians(difference));
var view = Matrix4x4.CreateLookAt(CameraPosition, CameraPosition + CameraFront, CameraUp);
var projection = Matrix4x4.CreatePerspectiveFieldOfView(MathHelper.DegreesToRadians(CameraZoom), Width / Height, 0.1f, 100.0f);
Shader.SetUniform("uModel", model);
Shader.SetUniform("uView", view);
Shader.SetUniform("uProjection", projection);
//We're drawing with just vertices and no indices, and it takes 36 vertices to have a six-sided textured cube
Gl.DrawArrays(PrimitiveType.Triangles, 0, 36);
}