/// <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();
}
public completeDxfStruct processDxfFile(string in_obtainedFileName)
{
completeDxfStruct valueToReturn = new completeDxfStruct();
DxfFile dxfFile;
using (System.IO.FileStream fs = new System.IO.FileStream(in_obtainedFileName, System.IO.FileMode.Open))
{
dxfFile = DxfFile.Load(fs);
IList <DxfBlock> allBlocks = dxfFile.Blocks;
IList <DxfEntity> usedEntities;
if ((allBlocks.Count == 0) || (allBlocks[0].Name.ToUpper().Contains("MODEL") == false))
{
usedEntities = dxfFile.Entities;
}
else
{
usedEntities = allBlocks[0].Entities;
}
foreach (DxfEntity entity in dxfFile.Entities)
{
switch (entity.EntityType)
{
case DxfEntityType.Line:
{
DxfLine line = (DxfLine)entity;
MyDxfLine TransfLine = new MyDxfLine(line.P1.X, line.P1.Y, line.P2.X, line.P2.Y);
valueToReturn.addDxfDrawingEntry(TransfLine);
break;
}
case DxfEntityType.Arc:
{
DxfArc arc = (DxfArc)entity;
MyDxfArc TransfArc = new MyDxfArc(arc.Center.X, arc.Center.Y, arc.StartAngle, arc.EndAngle, arc.Radius);
valueToReturn.addDxfDrawingEntry(TransfArc);
break;
}
case DxfEntityType.LwPolyline: { //polyline. It has vertices.
DxfLwPolyline polylineS = entity as DxfLwPolyline;
int totalnumberOfVertices = polylineS.Vertices.Count;
for (int i = 0; i < totalnumberOfVertices - 1; i++)
{ //iterate through vertices, taking them by 2. A figure is between these two
DxfLwPolylineVertex point1 = polylineS.Vertices[i];
DxfLwPolylineVertex point2 = polylineS.Vertices[i + 1];
if (point1.Bulge == 0)
{
MyDxfLine TransfLine = new MyDxfLine(point1.X, point1.Y, point2.X, point2.Y);
valueToReturn.addDxfDrawingEntry(TransfLine);
}
else //it is arc
// The bulge is the tangent of one fourth the included angle for an arc segment,
// made negative if the arc goes clockwise from the start point to the endpoint.
// A bulge of 0 indicates a straight segment, and a bulge of 1 is a semicircle
{
double angleOfArc = System.Math.Atan(point1.Bulge) * 180.0 / Math.PI * 4;
double startAngle = Math.Atan(point1.Y / point1.X) * 180.0 / Math.PI;
//double endAngle =
}
}
break;
}
case DxfEntityType.Polyline: {
//https://github.com/IxMilia/Dxf/issues/90
DxfPolyline polyline = entity as DxfPolyline;
break;
}
}
}
}
return(valueToReturn);
}
