/// <summary>
/// Is point hit by U, V coordinates
/// </summary>
/// <returns></returns>
private bool IsHitByUV(Vertex v, Point p)
{
Point s = Math2DTools.GetUV(v);
Rectangle r = new Rectangle(new Point(s.X - 5, s.Y - 5), new Size(10, 10));
return(r.Contains(p));
}
/// <summary>
/// Move
/// </summary>
/// <param name="p"></param>
public void Move(Point p, int?vID)
{
if (vID == null)
{
return;
}
controlPoints[vID.Value] = Math2DTools.GetXY(p);
}
/// <summary>
/// Draw method
/// </summary>
/// <param name="g">Grahpics context</param>
public void Draw(Graphics g)
{
// draw the actual bezier curve points
List <Vertex> bcp = DeCasteljau.Points(controlPoints, 0.01);
if (bcp == null)
{
return;
}
// draw interconnections between control points
for (int i = 0; i < controlPoints.Count - 1; i++)
{
g.DrawLine(Pens.Black, Math2DTools.GetUV(controlPoints[i]), Math2DTools.GetUV(controlPoints[i + 1]));
}
// draw draw control points
using (var f = new Font("Arial", 10))
{
Rectangle rect = new Rectangle(new Point(Math2DTools.GetUV(controlPoints[0]).X - 5, Math2DTools.GetUV(controlPoints[0]).Y - 5), new Size(10, 10));
g.FillRectangle(Brushes.Green, rect);
g.DrawRectangle(Pens.Black, rect);
g.DrawString("V start", f, Brushes.Black, new Point(rect.X + 10, rect.Y + 10));
rect = new Rectangle(new Point(Math2DTools.GetUV(controlPoints[controlPoints.Count - 1]).X - 5, Math2DTools.GetUV(controlPoints[controlPoints.Count - 1]).Y - 5), new Size(10, 10));
g.FillRectangle(Brushes.Green, rect);
g.DrawRectangle(Pens.Black, rect);
g.DrawString("V end", f, Brushes.Black, new Point(rect.X + 10, rect.Y + 10));
for (int i = 1; i < controlPoints.Count - 1; i++)
{
rect = new Rectangle(new Point(Math2DTools.GetUV(controlPoints[i]).X - 5, Math2DTools.GetUV(controlPoints[i]).Y - 5), new Size(10, 10));
g.FillRectangle(Brushes.DarkOrange, rect);
g.DrawRectangle(Pens.Black, rect);
g.DrawString("C" + i.ToString(), f, Brushes.Black, new Point(rect.X + 10, rect.Y + 10));
}
}
// draw red dots of points of bezier curve
foreach (var p in bcp)
{
var transformedPoint = Math2DTools.GetUV(p);
g.FillRectangle(Brushes.Red, new Rectangle(transformedPoint.X, transformedPoint.Y, 2, 2));
}
}
/// <summary>
/// Draw
/// </summary>
/// <param name="g">Graphics object</param>
public void Draw(Graphics g)
{
bool first = true;
foreach (var abscissa in indexBuffer)
{
using (Pen p = new Pen(Color.Red, 2))
{
var pStart = Math2DTools.GetUV(vertexBuffer[abscissa.PointStartID]);
var pEnd = Math2DTools.GetUV(vertexBuffer[abscissa.PointEndID]);
if (first)
{
first = false;
g.DrawLine(p, pStart, pEnd);
}
else
{
p.Color = Color.Black;
g.DrawLine(p, pStart, pEnd);
}
}
}
}
/// <summary>
/// Apply transformation matrices
/// </summary>
public void ApplyTransformations(Matrix3x3 t)
{
vertexBuffer = Math2DTools.ApplyTransform(ref vertexBufferOrig, t);
}
