Ejemplo n.º 1
0
Archivo: Ball.cs Proyecto: iayucar/PANG
        Vector2 closestPointToRectangle(Vector2 p, Rectangle r)
        {
            Vector2 rectPos = new Vector2(r.Left, r.Top);
            // relative position of p from the point 'p'
            Vector2 d = p - rectPos;

            // rectangle half-size
            Vector2 h = new Maths.Vector2((float)r.Width / 2f, (float)r.Height / 2f);

            // special case when the sphere centre is inside the rectangle
            if (Math.Abs(d.X) < h.X && Math.Abs(d.Y) < h.Y)
            {
                // use left or right side of the rectangle boundary
                // as it is the closest
                if ((h.X - Math.Abs(d.X)) < (h.Y - Math.Abs(d.Y)))
                {
                    d.Y = 0.0f;
                    d.X = h.X * Math.Sign(d.X);
                }
                // use top or bottom side of the rectangle boundary
                // as it is the closest
                else
                {
                    d.X = 0.0f;
                    d.Y = h.Y * Math.Sign(d.Y);
                }
            }
            else
            {
                // clamp to rectangle boundary
                if (Math.Abs(d.X) > h.X)
                {
                    d.X = h.X * Math.Sign(d.X);
                }
                if (Math.Abs(d.Y) > h.Y)
                {
                    d.Y = h.Y * Math.Sign(d.Y);
                }
            }

            // the closest point on rectangle from p
            Vector2 c = rectPos + d;

            return(c);
        }
Ejemplo n.º 2
0
        /// <summary>
        ///
        /// </summary>
        /// <param name="pX"></param>
        /// <param name="pY"></param>
        /// <param name="pRadius"></param>
        /// <param name="pColor"></param>
        public override void DrawCircle(float pX, float pY, float pRadius, float pWidth, bool pDashed, Maths.Color4 pColor)
        {
            SMX.Maths.Vector2 start     = GetScreenCoords(pX, pY);
            SMX.Maths.Vector2 radScreen = GetScreenCoords(pRadius, pRadius);


            Pen pen = new Pen(pColor.ToGDI(), pWidth);

            if (pDashed)
            {
                pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Dash;
            }
            else
            {
                pen.DashStyle = System.Drawing.Drawing2D.DashStyle.Solid;
            }

            float width = radScreen.X * 2;

            mGraphics.DrawEllipse(pen, start.X - width / 2, start.Y - width / 2, width, width);
        }
Ejemplo n.º 3
0
        /// <summary>
        ///
        /// </summary>
        /// <param name="pX"></param>
        /// <param name="pY"></param>
        /// <param name="pRadius"></param>
        /// <param name="pColor"></param>
        public override void DrawCircle(float pX, float pY, float pRadius, float pWidth, bool pDashed, Maths.Color4 pColor)
        {
            SolidColorBrush brush = new SolidColorBrush(mRenderTarget2D, pColor.ToSDX());

            SharpDX.Vector2   start     = GetScreenCoords(pX, pY).ToSDX();
            SMX.Maths.Vector2 radScreen = GetScreenCoords(pRadius, pRadius);

            if (pDashed)
            {
                StrokeStyleProperties props = new StrokeStyleProperties();
                props.DashCap    = CapStyle.Flat;
                props.EndCap     = CapStyle.Flat;
                props.StartCap   = CapStyle.Flat;
                props.DashOffset = 0;
                props.DashStyle  = DashStyle.Dash;
                props.LineJoin   = LineJoin.Round;
                SharpDX.Direct2D1.StrokeStyle strokeStyle = new StrokeStyle(mFactory2D, props);
                mRenderTarget2D.DrawEllipse(new Ellipse(start, radScreen.X, radScreen.X), brush, pWidth, strokeStyle);
            }
            else
            {
                mRenderTarget2D.DrawEllipse(new Ellipse(start, radScreen.X, radScreen.X), brush, pWidth);
            }
        }