public RectangleD(V2D pos, V2D size)
{
X = pos.X;
Y = pos.Y;
Width = size.X;
Height = size.Y;
}
/// <summary>
/// Exact or interpolated distance to specified point (exact if the spline is a straight line)
/// </summary>
/// <param name="point"></param>
/// <returns></returns>
public float DistanceToPoint(PointF point)
{
var a = (V2D)(this.A);
var b = (V2D)(this.D);
var c = new V2D(point.X, point.Y);
if (this.L)
{
return((float)V2D.LineToPointDistance(a, b, c));
}
else
{
var d = -1f;
var e = 0f;
var i1 = (V2D)this.I1;
var i2 = (V2D)this.I2;
var i3 = (V2D)this.I3;
d = (float)V2D.LineToPointDistance(a, i1, c);
e = (float)V2D.LineToPointDistance(i1, i2, c); if (e < d)
{
d = e;
}
e = (float)V2D.LineToPointDistance(i2, i3, c); if (e < d)
{
d = e;
}
e = (float)V2D.LineToPointDistance(i3, b, c); if (e < d)
{
d = e;
}
return(d);
}
}
private void picBox_MouseDown(object sender, MouseEventArgs e)
{
if (map != null)
{
centerStartDrag = Center;
mouseStartDrag = e.Location;
V2D pt = ((V2D)Center / map.TileSets[Zoom].Muliplier - ((V2D)this.Size / 2) + (V2D)e.Location) * map.TileSets[Zoom].Muliplier;
MouseDownScaled?.Invoke(this, pt);
}
}
private void PicBox_Draw_Paint(object sender, PaintEventArgs e)
{
if (map != null)
{
if (map.TileSets != null)
{
if (map.TileSets.Count > Zoom)
{
V2D pt = ((V2D)this.Size / 2) - (V2D)Center / map.TileSets[Zoom].Muliplier;
e.Graphics.TranslateTransform((float)pt.X, (float)pt.Y);
e.Graphics.ScaleTransform((float)(1.0 / map.TileSets[Zoom].Muliplier), (float)(1.0 / map.TileSets[Zoom].Muliplier));
OnDrawObjectsScaled?.Invoke(this, e.Graphics);
}
}
}
}
public static double LineToPointDistance(V2D a, V2D b, V2D c)
{
var d = (b - a).Length;
var d2 = d * d;
if (d2 == 0d)
{
return((c - a).Length);
}
var t = ((c - a).Dot(b - a)) / d2;
if (t < 0d)
{
return((c - a).Length);
}
else if (t > 1d)
{
return((c - b).Length);
}
var e = a + t * (b - a);
return((e - c).Length);
}
public double Dot(V2D a)
{
return X * a.X + Y * a.Y;
}
public static double LineToPointDistance(V2D a, V2D b, V2D c)
{
var d = (b - a).Length;
var d2 = d * d;
if (d2 == 0d) return (c - a).Length;
var t = ((c - a).Dot(b - a)) / d2;
if (t < 0d) return (c - a).Length;
else if (t > 1d) return (c - b).Length;
var e = a + t * (b - a);
return (e - c).Length;
}
public static V2D Interpolate(V2D a, V2D b, double t)
{
return new V2D(a.X * (1 - t) + b.X * t, a.Y * (1 - t) + b.Y * t);
}
public static V2D Interpolate(V2D a, V2D b, double t)
{
return(new V2D(a.X * (1 - t) + b.X * t, a.Y * (1 - t) + b.Y * t));
}
public double Dot(V2D a)
{
return(X * a.X + Y * a.Y);
}
public Tile(string image, V2D pos, V2D size)
{
ImageFile = image;
Position = pos;
Size = size;
}
