protected override void OnMouseWheel(MouseEventArgs e)
{
base.OnMouseWheel(e);
int grad;
int delta = e.Delta / 40;
IKLink el = null;
IKLink el2 = null;
if (!Control.ModifierKeys.HasFlag(Keys.Shift))
{
el = _base.Children[0];
el2 = _base2.Children[0];
grad = _rotations[0] + delta;
_rotations[0] += delta;
}
else
{
el = _base.Children[0].Children[0];
el2 = _base2.Children[0].Children[0];
grad = _rotations[1] + delta;
_rotations[1] += delta;
}
float bogen = (float)(grad * Math.PI / 180);
Debug.WriteLine("Grad: {0} TotalGrad: {1} bogen: {2}", delta, grad, bogen);
//el.Rotation = new Vector3((float)Math.Cos(bogen), (float)Math.Sin(bogen), 1);
// el.Rotation = new Matrix3D(Math.Cos(bogen), Math.Sin(bogen),-Math.Sin(bogen));
el.Rotation = new Matrix3D(Math.Cos(bogen), Math.Sin(bogen), 0, 0, -Math.Sin(bogen), Math.Cos(bogen), 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
//https://math.stackexchange.com/questions/142821/matrix-for-rotation-around-a-vector
Vector3D rotVec1 = new Vector3D(1, 0, 0);
//to extend 3x3 to 4x4
float dummy0 = 0;
float dummy1 = 1;
var W = new Matrix3D(0, rotVec1.Z, -rotVec1.Y, dummy0, -rotVec1.Z, 0, rotVec1.X, dummy0, rotVec1.Y, -rotVec1.X, 0, dummy0, dummy0, dummy0, dummy0, dummy1);
var W2 = Matrix3D.Multiply(W, W);
var sin2 = Math.Sin(bogen) * Math.Sin(bogen);
var rot = Matrix3D.Identity + Matrix3D.Sc(Math.Sin(bogen), W) + 2 * sin2 * W ^ 2;
el2.Rotation = new Matrix3D(Math.Cos(bogen), Math.Sin(bogen), 0, 0, -Math.Sin(bogen), Math.Cos(bogen), 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
this.Invalidate();
// Debug.WriteLine("{0:n4} {0:n4}",el.Rotation.X,el.Rotation.Y);
//Debug.WriteLine(el.Rotation);
}
protected override void OnLoad(EventArgs e)
{
base.OnLoad(e);
float len1x = 50; float len1y = 10;
float len2x = 40; float len2y = 40;
double rad120 = 120 * Math.PI / 180;
_base = new IKLink(new Vector3D(this.Size.Width / 2, this.Size.Height / 2, 0));
_base.Rotation = new Matrix3D(1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1, 0, 0, 0, 0, 1);
var newEl = new IKLink(len1x, len1y, 0);
_base.Children.Add(newEl);
newEl.Children.Add(new IKLink(len2x, len2y, 0));
_base2 = new IKLink(new Vector3D(this.Size.Width / 2, this.Size.Height / 2, 0));
_base2.Rotation = new Matrix3D(Math.Cos(rad120), 0, -Math.Sin(rad120), 0, 1, 0, 0, 0, Math.Sin(rad120), 0, Math.Cos(rad120), 0, 0, 0, 0, 1);
newEl = new IKLink(len1x, len1y, 0);
_base2.Children.Add(newEl);
newEl.Children.Add(new IKLink(len2x, len2y, 0));
}