コード例 #1
0
        public MyDxfArc(double in_XCenter, double in_YCenter, double in_StartDegreeAngle, double in_EndDegreeAngle, double in_Radius)
        {
            XCenter                   = in_XCenter;
            YCenter                   = in_YCenter;
            StartAngleRad             = MathHelperForTransformations.ConvertDegreesToRadians(in_StartDegreeAngle);
            StartAngleDegree          = in_StartDegreeAngle;
            EndAngleDegree            = in_EndDegreeAngle;
            EndAngleRad               = MathHelperForTransformations.ConvertDegreesToRadians(in_EndDegreeAngle);
            doneTransformationOfAngle = false;
            if (EndAngleRad < StartAngleRad)
            {
                EndAngleRad += 2 * Math.PI;
                doneTransformationOfAngle = true;
            }
            Radius = in_Radius;
            //calculate parameters required for drawing. C# arc has a weird definition
            //https://docs.microsoft.com/en-us/dotnet/api/system.drawing.graphics.drawarc
            drawStartAngleDegreeCW = in_StartDegreeAngle;
            double drawEndAngleDegreeCW = in_EndDegreeAngle != 0 ? in_EndDegreeAngle : 359.9999999999999999;

            if (drawEndAngleDegreeCW < drawStartAngleDegreeCW)
            {
                /*
                 *  double tmpAngle = drawStartAngleDegreeCW;
                 *  drawStartAngleDegreeCW = drawEndAngleDegreeCW;
                 *  drawEndAngleDegreeCW = tmpAngle;
                 */
                drawEndAngleDegreeCW += 360.0;
            }

            drawSweepAngleDegree = drawEndAngleDegreeCW - drawStartAngleDegreeCW;

            setupDrawingParameters();
        }
コード例 #2
0
        /// <summary>
        /// rotate all entries in a structure around bounding box center point. Changes coordinates of them
        /// </summary>
        /// <param name="in_deg"></param>
        public void performRotationOfDxfStruct(double in_deg)
        {
            //obtain center of rotation
            double horizontalMidPoint = (this.currentBoundingBox.XLowerLeft + this.currentBoundingBox.XUpperRight) / 2.0;
            double verticalMidPoint   = (this.currentBoundingBox.YLowerLeft + this.currentBoundingBox.YUpperRight) / 2.0;

            //obtain rotation matrix
            double[,] currentRotationMatrix = MathHelperForTransformations.getRotationMatrixAroundPoint(horizontalMidPoint, verticalMidPoint, MathHelperForTransformations.ConvertDegreesToRadians(in_deg));
            //iterate over all entries in dxf structure altering them
            for (int iii = 0; iii < AllDXFdrawingEntries.Count; iii++)
            {
                DXFdrawingEntry item = AllDXFdrawingEntries[iii];
                if (item is MyDxfLine)
                {
                    Tuple <double, double> coord1 = MathHelperForTransformations.rotateImageUsingPrecalculatedTransformationMatrix(currentRotationMatrix, (item as MyDxfLine).XStart, (item as MyDxfLine).YStart);
                    (item as MyDxfLine).XStart = coord1.Item1;
                    (item as MyDxfLine).YStart = coord1.Item2;
                    Tuple <double, double> coord2 = MathHelperForTransformations.rotateImageUsingPrecalculatedTransformationMatrix(currentRotationMatrix, (item as MyDxfLine).XEnd, (item as MyDxfLine).YEnd);
                    (item as MyDxfLine).XEnd = coord2.Item1;
                    (item as MyDxfLine).YEnd = coord2.Item2;
                }
                else if (item is MyDxfArc)
                {
                    //center coordinates
                    Tuple <double, double> coordCenter = MathHelperForTransformations.rotateImageUsingPrecalculatedTransformationMatrix(currentRotationMatrix, (item as MyDxfArc).XCenter, (item as MyDxfArc).YCenter);
                    // Rotate start and stop angles. They are pointed by vectors, coming from Center and by magnitube of Radius
                    // https://www.youtube.com/watch?v=g9lgL6f3h90

                    /*
                     * double startAngleCoordinateX = (item as MyDxfArc).XCenter + (item as MyDxfArc).Radius * Math.Cos((item as MyDxfArc).StartAngleRad);
                     * double startAngleCoordinateY = (item as MyDxfArc).YCenter + (item as MyDxfArc).Radius * Math.Sin((item as MyDxfArc).StartAngleRad);
                     * double endAngleCoordinateX = (item as MyDxfArc).XCenter + (item as MyDxfArc).Radius * Math.Cos((item as MyDxfArc).EndAngleRad);
                     * double endAngleCoordinateY = (item as MyDxfArc).YCenter + (item as MyDxfArc).Radius * Math.Sin((item as MyDxfArc).EndAngleRad);
                     * //rotate vector which corresponds to start angle
                     * Tuple<double, double> startAnglePointNew = MathHelperForTransformations.rotateImageUsingPrecalculatedTransformationMatrix(currentRotationMatrix, (startAngleCoordinateX ), (startAngleCoordinateY ));
                     * double theta1Start = Math.Asin(Math.Abs(startAnglePointNew.Item2 - coordCenter.Item2) / (item as MyDxfArc).Radius);
                     * double startAngleDegree = MathHelperForTransformations.ConvertRadiansToDegrees(theta1Start);
                     * //rotate vector which corresponds to end angle
                     * Tuple<double, double> endAnglePointNew = MathHelperForTransformations.rotateImageUsingPrecalculatedTransformationMatrix(currentRotationMatrix, (endAngleCoordinateX ), (endAngleCoordinateY ));
                     * double theta2End = Math.Asin(Math.Abs(endAnglePointNew.Item2 - coordCenter.Item2) / (item as MyDxfArc).Radius);
                     * double endAngleDegree = MathHelperForTransformations.ConvertRadiansToDegrees(theta2End);
                     */
                    double startAngleDegree = (item as MyDxfArc).StartAngleDegree + in_deg;
                    double endAngleDegree   = (item as MyDxfArc).EndAngleDegree + in_deg;
                    AllDXFdrawingEntries[iii] = new MyDxfArc(coordCenter.Item1, coordCenter.Item2, startAngleDegree, endAngleDegree, (item as MyDxfArc).Radius);
                }
            }
            //bounding box should be changed too. rotate ALL the coordinates of bounding rectangle and select the new appropriate values

            recalculateBoundingBoxFromScratch();
        }