public void FitToPoints(Vector3d[] pnts, int w, int h)
{
List <Vector2> vv = new List <Vector2>();
foreach (var vertex in pnts)
{
var p = MouseRay.Project(new Vector3((float)vertex.X, (float)vertex.Y, (float)vertex.Z), ProjectionMatrix, ViewMatrix, WorldMatrix, viewport);
vv.Add(p.Xy);
}
//prjs->xy coords
var minx = vv.Min(z => z.X);
var maxx = vv.Max(z => z.X);
var miny = vv.Min(z => z.Y);
var maxy = vv.Max(z => z.Y);
var dx = (maxx - minx);
var dy = (maxy - miny);
var cx = dx / 2;
var cy = dy / 2;
var dir = CamTo - CamFrom;
//center back to 3d
var mr = new MouseRay(cx + minx, cy + miny, this);
var v0 = mr.Start;
CamFrom = v0;
CamTo = CamFrom + dir;
var aspect = w / (float)(h);
dx /= w;
dx *= OrthoWidth;
dy /= h;
dy *= OrthoWidth;
OrthoWidth = Math.Max(dx, dy);
}
private void Control_MouseWheel(object sender, MouseEventArgs e)
{
float zoomK = 20;
var cur = Control.PointToClient(Cursor.Position);
Control.MakeCurrent();
//MouseRay.UpdateMatrices();
MouseRay mr = new MouseRay(cur.X, cur.Y, Camera);
//MouseRay mr0 = new MouseRay(Control.Width / 2, Control.Height / 2, Camera);
var camera = Camera;
if (camera.IsOrtho)
{
var shift = mr.Start - Camera.CamFrom;
shift.Normalize();
//var old = camera.OrthoWidth / Control.Width;
if (e.Delta > 0)
{
camera.OrthoWidth /= 1.2f;
////var pxn = new Vector2(cur.X,cur.Y)-(new Vector2(Control.Width/2,Control.Height/2));
//Camera cam2 = new Camera();
//cam2.CamFrom = camera.CamFrom;
//cam2.CamTo = camera.CamTo;
//cam2.CamUp = camera.CamUp;
//cam2.OrthoWidth = camera.OrthoWidth;
//cam2.IsOrtho = camera.IsOrtho;
//cam2.UpdateMatricies(Control);
//MouseRay mr2 = new MouseRay(cur.X, cur.Y, cam2);
////var a1 = pxn * camera.OrthoWidth / Control.Width;
//var diff = mr.Start - mr2.Start;
//shift *= diff.Length;
//camera.CamFrom += shift;
//camera.CamTo += shift;
}
else
{
camera.OrthoWidth *= 1.2f;
}
/*var pxn = new Vector2(cur.X, cur.Y) - (new Vector2(Control.Width / 2, Control.Height / 2));
*
* var a1 = pxn * camera.OrthoWidth / Control.Width;*/
Camera cam2 = new Camera();
cam2.CamFrom = camera.CamFrom;
cam2.CamTo = camera.CamTo;
cam2.CamUp = camera.CamUp;
cam2.OrthoWidth = camera.OrthoWidth;
cam2.IsOrtho = camera.IsOrtho;
cam2.UpdateMatricies(Control);
MouseRay mr2 = new MouseRay(cur.X, cur.Y, cam2);
var diff = mr.Start - mr2.Start;
shift *= diff.Length;
if (e.Delta > 0)
{
camera.CamFrom += shift;
camera.CamTo += shift;
}
else
{
camera.CamFrom -= shift;
camera.CamTo -= shift;
}
return;
}
if (
Control.ClientRectangle.IntersectsWith(new Rectangle(Control.PointToClient(Cursor.Position),
new System.Drawing.Size(1, 1))))
{
var dir = mr.Dir;
dir.Normalize();
if (e.Delta > 0)
{
camera.CamFrom += dir * zoomK;
camera.CamTo += dir * zoomK;
}
else
{
camera.CamFrom -= dir * zoomK;
camera.CamTo -= dir * zoomK;
}
}
}
public virtual void Control_MouseDown(object sender, MouseEventArgs e)
{
Control.MakeCurrent();
var pos = CursorPosition;
startPosX = pos.X;
startPosY = pos.Y;
cameraFromStart = Camera.CamFrom;
cameraToStart = Camera.CamTo;
cameraUpStart = Camera.CamUp;
if (e.Button == MouseButtons.Right)
{
var mr = new MouseRay(pos.X, pos.Y, Camera);
var d1 = Camera.CamFrom - Camera.CamTo;
//var plane1 : forw
var crs1 = Vector3.Cross(cameraUpStart, d1);
var z1 = Vector3.UnitZ;
if (SnapModePlane)
{
var inter = lineIntersection(Vector3.Zero, Vector3.UnitZ, Camera.CamFrom, Camera.CamTo - Camera.CamFrom);
if (inter != null)
{
drag = true;
//var shift = Camera.CamTo - inter.Value;
var dl = Camera.DirLen;
bool fixedLen = false;
if (fixedLen)
{
var shift2 = Camera.CamFrom - Camera.CamTo;
Camera.CamTo = inter.Value;
Camera.CamFrom = Camera.CamTo + shift2;
cameraToStart = Camera.CamTo;
cameraFromStart = Camera.CamFrom;
}
else
{
Camera.CamTo = inter.Value;
cameraToStart = Camera.CamTo;
}
}
}
else if (SnapMode)
{
var inter = lineIntersection(Camera.CamTo, crs1, Vector3.Zero, Vector3.UnitX);
if (inter != null)
{
drag = true;
Camera.CamTo = inter.Value;
cameraToStart = Camera.CamTo;
}
}
else
{
drag = true;
}
lshiftcmd = lshift;
}
if (e.Button == MouseButtons.Left)
{
drag2 = true;
//Camera.CamTo=Drawer.tubec
}
}