// RenderAFrame is called once a frame
public override void RenderAFrame()
{
//if (_gamePad != null)
// Diagnostics.Log(_gamePad.LSX);
// Clear the backbuffer
RC.Clear(ClearFlags.Color | ClearFlags.Depth);
RC.Viewport(0, 0, Width, Height);
// Mouse and keyboard movement
if (Keyboard.LeftRightAxis != 0 || Keyboard.UpDownAxis != 0)
{
_keys = true;
}
var curDamp = (float)System.Math.Exp(-Damping * DeltaTime);
// Zoom & Roll
if (Touch.TwoPoint)
{
if (!_twoTouchRepeated)
{
_twoTouchRepeated = true;
_angleRollInit = Touch.TwoPointAngle - _angleRoll;
_offsetInit = Touch.TwoPointMidPoint - _offset;
_maxPinchSpeed = 0;
}
_zoomVel = Touch.TwoPointDistanceVel * -0.01f;
_angleRoll = Touch.TwoPointAngle - _angleRollInit;
_offset = Touch.TwoPointMidPoint - _offsetInit;
float pinchSpeed = Touch.TwoPointDistanceVel;
if (pinchSpeed > _maxPinchSpeed)
{
_maxPinchSpeed = pinchSpeed; // _maxPinchSpeed is used for debugging only.
}
}
else
{
_twoTouchRepeated = false;
_zoomVel = Mouse.WheelVel * -0.5f;
_angleRoll *= curDamp * 0.8f;
_offset *= curDamp * 0.8f;
}
// UpDown / LeftRight rotation
if (Mouse.LeftButton)
{
_keys = false;
_angleVelHorz = -RotationSpeed * Mouse.XVel * DeltaTime * 0.0005f;
_angleVelVert = -RotationSpeed * Mouse.YVel * DeltaTime * 0.0005f;
}
else if (Touch.GetTouchActive(TouchPoints.Touchpoint_0) && !Touch.TwoPoint)
{
_keys = false;
float2 touchVel;
touchVel = Touch.GetVelocity(TouchPoints.Touchpoint_0);
_angleVelHorz = -RotationSpeed * touchVel.x * DeltaTime * 0.0005f;
_angleVelVert = -RotationSpeed * touchVel.y * DeltaTime * 0.0005f;
}
else
{
if (_keys)
{
_angleVelHorz = -RotationSpeed * Keyboard.LeftRightAxis * DeltaTime;
_angleVelVert = -RotationSpeed * Keyboard.UpDownAxis * DeltaTime;
}
else
{
_angleVelHorz *= curDamp;
_angleVelVert *= curDamp;
}
}
_zoom += _zoomVel;
// Limit zoom
if (_zoom < 80)
{
_zoom = 80;
}
if (_zoom > 2000)
{
_zoom = 2000;
}
_angleHorz += _angleVelHorz;
// Wrap-around to keep _angleHorz between -PI and + PI
_angleHorz = M.MinAngle(_angleHorz);
_angleVert += _angleVelVert;
// Limit pitch to the range between [-PI/2, + PI/2]
_angleVert = M.Clamp(_angleVert, -M.PiOver2, M.PiOver2);
// Wrap-around to keep _angleRoll between -PI and + PI
_angleRoll = M.MinAngle(_angleRoll);
// Create the camera matrix and set it as the current View transformation
var mtxRot = /*float4x4.CreateRotationZ(_angleRoll) **/ float4x4.CreateRotationX(_angleVert) * float4x4.CreateRotationY(_angleHorz);
var mtxCam = float4x4.LookAt(0, 20, -_zoom, 0, 0, 0, 0, 1, 0);
var mtxOffset = float4x4.CreateTranslation(2f * _offset.x / Width, -2f * _offset.y / Height, 0);
var view = mtxCam * mtxRot * _sceneScale * _sceneCenter;;
var perspective = float4x4.CreatePerspectiveFieldOfView(_fovy, (float)Width / Height, ZNear, ZFar) * mtxOffset;
var orthographic = float4x4.CreateOrthographic(Width, Height, ZNear, ZFar);
RC.View = view;
RC.Projection = orthographic;
// Constantly check for interactive objects.
_sih.CheckForInteractiveObjects(RC, Mouse.Position, Width, Height);
if (Touch.GetTouchActive(TouchPoints.Touchpoint_0) && !Touch.TwoPoint)
{
_sih.CheckForInteractiveObjects(RC, Touch.GetPosition(TouchPoints.Touchpoint_0), Width, Height);
}
// Tick any animations and Render the scene loaded in Init()
RC.View = view;
RC.Projection = perspective;
_sceneRenderer.Animate();
_sceneRenderer.Render(RC);
RC.View = view;
RC.Projection = orthographic;
_guiRenderer.Render(RC);
// Swap buffers: Show the contents of the backbuffer (containing the currently rendered frame) on the front buffer.
Present();
}
// RenderAFrame is called once a frame
public override void RenderAFrame()
{
// _guiSubText.Text = $"dt: {DeltaTime} ms, W: {Width}, H: {Height}, PS: {_maxPinchSpeed}";
// Clear the backbuffer
RC.Clear(ClearFlags.Color | ClearFlags.Depth);
RC.Viewport(0, 0, Width, Height);
// Mouse and keyboard movement
if (Input.Keyboard.LeftRightAxis != 0 || Input.Keyboard.UpDownAxis != 0)
{
_keys = true;
}
var curDamp = (float)System.Math.Exp(-Damping * Time.DeltaTime);
// Zoom & Roll
if (Input.Touch.TwoPoint)
{
if (!_twoTouchRepeated)
{
_twoTouchRepeated = true;
_angleRollInit = Input.Touch.TwoPointAngle - _angleRoll;
_offsetInit = Input.Touch.TwoPointMidPoint - _offset;
_maxPinchSpeed = 0;
}
_zoomVel = Input.Touch.TwoPointDistanceVel * -0.01f;
_angleRoll = Input.Touch.TwoPointAngle - _angleRollInit;
_offset = Input.Touch.TwoPointMidPoint - _offsetInit;
float pinchSpeed = Input.Touch.TwoPointDistanceVel;
if (pinchSpeed > _maxPinchSpeed)
{
_maxPinchSpeed = pinchSpeed; // _maxPinchSpeed is used for debugging only.
}
}
else
{
_twoTouchRepeated = false;
_zoomVel = Input.Mouse.WheelVel * -0.5f;
_angleRoll *= curDamp * 0.8f;
_offset *= curDamp * 0.8f;
}
// UpDown / LeftRight rotation
if (Input.Mouse.LeftButton)
{
_keys = false;
_angleVelHorz = -RotationSpeed * Input.Mouse.XVel * 0.000002f;
_angleVelVert = -RotationSpeed * Input.Mouse.YVel * 0.000002f;
}
else if (Input.Touch.GetTouchActive(TouchPoints.Touchpoint_0) && !Input.Touch.TwoPoint)
{
_keys = false;
float2 touchVel;
touchVel = Input.Touch.GetVelocity(TouchPoints.Touchpoint_0);
_angleVelHorz = -RotationSpeed * touchVel.x * 0.000002f;
_angleVelVert = -RotationSpeed * touchVel.y * 0.000002f;
}
else
{
if (_keys)
{
_angleVelHorz = -RotationSpeed * Input.Keyboard.LeftRightAxis * 0.002f;
_angleVelVert = -RotationSpeed * Input.Keyboard.UpDownAxis * 0.002f;
}
else
{
_angleVelHorz *= curDamp;
_angleVelVert *= curDamp;
}
}
_zoom += _zoomVel;
// Limit zoom
if (_zoom < 80)
{
_zoom = 80;
}
if (_zoom > 2000)
{
_zoom = 2000;
}
_angleHorz += _angleVelHorz;
// Wrap-around to keep _angleHorz between -PI and + PI
_angleHorz = M.MinAngle(_angleHorz);
_angleVert += _angleVelVert;
// Limit pitch to the range between [-PI/2, + PI/2]
_angleVert = M.Clamp(_angleVert, -M.PiOver2, M.PiOver2);
// Wrap-around to keep _angleRoll between -PI and + PI
_angleRoll = M.MinAngle(_angleRoll);
// Create the camera matrix and set it as the current ModelView transformation
var mtxRot = float4x4.CreateRotationZ(_angleRoll) * float4x4.CreateRotationX(_angleVert) * float4x4.CreateRotationY(_angleHorz);
var mtxCam = float4x4.LookAt(0, 20, -_zoom, 0, 0, 0, 0, 1, 0);
RC.View = mtxCam * mtxRot * _sceneScale * _sceneCenter;
var mtxOffset = float4x4.CreateTranslation(2 * _offset.x / Width, -2 * _offset.y / Height, 0);
RC.Projection = mtxOffset * RC.Projection;
// Tick any animations and Render the scene loaded in Init()
_sceneRenderer.Animate();
_sceneRenderer.Render(RC);
// Swap buffers: Show the contents of the backbuffer (containing the currently rendered frame) on the front buffer.
Present();
}