コード例 #1
0
ファイル: CPoint2D.cs プロジェクト: VeryMachoGames/MeshEditor
 /*** Distance between two points***/
 public double DistanceTo(CPoint2D point)
 {
     return(Math.Sqrt((point.X - this.X) * (point.X - this.X)
                      + (point.Y - this.Y) * (point.Y - this.Y)));
 }
コード例 #2
0
        /************************************************
         * Offset the line segment to generate a new line segment
         * If the offset direction is along the x-axis or y-axis,
         * Parameter is true, other wise it is false
         * ***********************************************/
        public CLineSegment OffsetLine(double distance, bool rightOrDown)
        {
            //offset a line with a given distance, generate a new line
            //rightOrDown=true means offset to x incress direction,
            // if the line is horizontal, offset to y incress direction

            CLineSegment line;
            CPoint2D     newStartPoint = new CPoint2D();
            CPoint2D     newEndPoint   = new CPoint2D();

            double alphaInRad = this.GetLineAngle(); // 0-PI

            if (rightOrDown)
            {
                if (this.HorizontalLine()) //offset to y+ direction
                {
                    newStartPoint.X = this.m_startPoint.X;
                    newStartPoint.Y = this.m_startPoint.Y + distance;

                    newEndPoint.X = this.m_endPoint.X;
                    newEndPoint.Y = this.m_endPoint.Y + distance;
                    line          = new CLineSegment(newStartPoint, newEndPoint);
                }
                else //offset to x+ direction
                {
                    if (Math.Sin(alphaInRad) > 0)
                    {
                        newStartPoint.X = m_startPoint.X + Math.Abs(distance * Math.Sin(alphaInRad));
                        newStartPoint.Y = m_startPoint.Y - Math.Abs(distance * Math.Cos(alphaInRad));

                        newEndPoint.X = m_endPoint.X + Math.Abs(distance * Math.Sin(alphaInRad));
                        newEndPoint.Y = m_endPoint.Y - Math.Abs(distance * Math.Cos(alphaInRad));

                        line = new CLineSegment(
                            newStartPoint, newEndPoint);
                    }
                    else //sin(FalphaInRad)<0
                    {
                        newStartPoint.X = m_startPoint.X + Math.Abs(distance * Math.Sin(alphaInRad));
                        newStartPoint.Y = m_startPoint.Y + Math.Abs(distance * Math.Cos(alphaInRad));
                        newEndPoint.X   = m_endPoint.X + Math.Abs(distance * Math.Sin(alphaInRad));
                        newEndPoint.Y   = m_endPoint.Y + Math.Abs(distance * Math.Cos(alphaInRad));

                        line = new CLineSegment(
                            newStartPoint, newEndPoint);
                    }
                }
            }    //{rightOrDown}
            else //leftOrUp
            {
                if (this.HorizontalLine()) //offset to y directin
                {
                    newStartPoint.X = m_startPoint.X;
                    newStartPoint.Y = m_startPoint.Y - distance;

                    newEndPoint.X = m_endPoint.X;
                    newEndPoint.Y = m_endPoint.Y - distance;
                    line          = new CLineSegment(
                        newStartPoint, newEndPoint);
                }
                else //offset to x directin
                {
                    if (Math.Sin(alphaInRad) >= 0)
                    {
                        newStartPoint.X = m_startPoint.X - Math.Abs(distance * Math.Sin(alphaInRad));
                        newStartPoint.Y = m_startPoint.Y + Math.Abs(distance * Math.Cos(alphaInRad));
                        newEndPoint.X   = m_endPoint.X - Math.Abs(distance * Math.Sin(alphaInRad));
                        newEndPoint.Y   = m_endPoint.Y + Math.Abs(distance * Math.Cos(alphaInRad));

                        line = new CLineSegment(
                            newStartPoint, newEndPoint);
                    }
                    else //sin(FalphaInRad)<0
                    {
                        newStartPoint.X = m_startPoint.X - Math.Abs(distance * Math.Sin(alphaInRad));
                        newStartPoint.Y = m_startPoint.Y - Math.Abs(distance * Math.Cos(alphaInRad));
                        newEndPoint.X   = m_endPoint.X - Math.Abs(distance * Math.Sin(alphaInRad));
                        newEndPoint.Y   = m_endPoint.Y - Math.Abs(distance * Math.Cos(alphaInRad));

                        line = new CLineSegment(
                            newStartPoint, newEndPoint);
                    }
                }
            }
            return(line);
        }
コード例 #3
0
 public CLine(Double angleInRad, CPoint2D point)
 {
     Initialize(angleInRad, point);
 }
コード例 #4
0
 public CLineSegment(CPoint2D startPoint, CPoint2D endPoint)
     : base(startPoint, endPoint)
 {
     this.m_startPoint = startPoint;
     this.m_endPoint   = endPoint;
 }