/// <summary>
/// Gets the 3D coordinates for the given mouse XY coordinates and depth value.
/// </summary>
/// <returns></returns>
public Vector3 CoordFor(int x, int y, float depth)
{
Vector3 vec;
Vector2 normCoords = OpenGLHelper.NormMouseCoords(x, Height - y, Width, Height);
Vector3 cameraPosition = TargetPosition + invRotationMatrix.Row2 * Distance;
vec.X = (normCoords.X * depth) * FactorX;
vec.Y = (normCoords.Y * depth) * FactorY;
vec.Z = depth - Distance;
return(-cameraPosition + Vector3.Transform(invRotationMatrix, vec));
}
public void MouseWheel(MouseEventInfo e, KeyEventInfo k)
{
if (k.KeyCtrl)
{
float delta = -e.Delta * Math.Min(0.1f, _camera.Depth / 500f);
delta *= _camera.TargetDistance;
Vector2 normCoords = OpenGLHelper.NormMouseCoords(e.X, e.Y, _camera.Width, _camera.Height);
Vector3 vec = _camera.InverseRotationMatrix.Row0 * -normCoords.X * delta * _camera.FactorX +
_camera.InverseRotationMatrix.Row1 * normCoords.Y * delta * _camera.FactorY +
_camera.InverseRotationMatrix.Row2 * delta;
_camera.TargetPosition += vec;
}
else
{
Zoom(e.Delta * 0.1f * _camera.ZoomSpeed, true);
}
}
public void MouseWheel(MouseEventInfo e, KeyEventInfo k)
{
if (k.KeyShift)
{
float amount = e.Delta * 0.1f;
_camera.KeyMoveSpeed += amount;
}
else
{
float delta = (e.Delta * Math.Min(k.KeyShift ? 0.04f : 0.01f, _camera.Depth / 500f));
Vector3 vec;
Vector2 normCoords = OpenGLHelper.NormMouseCoords(e.X, e.Y, _camera.Width, _camera.Height);
vec.X = (-normCoords.X * delta) * _camera.FactorX;
vec.Y = (normCoords.Y * delta) * _camera.FactorY;
vec.Z = delta;
_camera.TargetPosition -= Vector3.Transform(_camera.InverseRotationMatrix, vec);
}
}