[HttpGet("Scale/{scaleFactor:float}")] // GET /api/Editor/scale/2.5
public IActionResult Scale(float scaleFactor)
{
var drawModel = HttpContext.Session.GetObjectFromJson <DrawModel>("DrawModel");
if (drawModel != null)
{
var newDrawModel = new DrawModel();
newDrawModel.FileName = drawModel.FileName;
// circles
foreach (var circle in drawModel.Circles)
{
var newCenterPoint = Transformation.Scale(circle.Center.PointF, scaleFactor);
newDrawModel.AddCircle(newCenterPoint, circle.Radius * scaleFactor, circle.IsVisible);
}
// lines
foreach (var line in drawModel.Lines)
{
var newStartPoint = Transformation.Scale(line.StartPoint.PointF, scaleFactor);
var newEndPoint = Transformation.Scale(line.EndPoint.PointF, scaleFactor);
newDrawModel.AddLine(newStartPoint, newEndPoint, line.IsVisible);
}
// arcs
foreach (var a in drawModel.Arcs)
{
var newCenterPoint = Transformation.Scale(a.Center.PointF, scaleFactor);
newDrawModel.AddArc(newCenterPoint, a.Radius * scaleFactor, a.StartAngle, a.EndAngle, a.IsClockwise, a.IsVisible);
}
// polylines
foreach (var p in drawModel.Polylines)
{
var newVertexes = new List <PointF>();
for (var i = 0; i < p.Vertexes.Count; i++)
{
var vertex = p.Vertexes[i];
var newVertex = Transformation.Scale(vertex.PointF, scaleFactor);
newVertexes.Add(newVertex);
}
newDrawModel.AddPolyline(newVertexes, p.IsVisible);
}
// texts
foreach (var t in drawModel.Texts)
{
var newStartPoint = Transformation.Scale(t.StartPoint.PointF, scaleFactor);
newDrawModel.AddText(newStartPoint, t.Font, t.FontSize * scaleFactor, t.Text);
}
// make sure to recalculate the bounds
newDrawModel.CalculateBounds();
HttpContext.Session.SetObjectAsJson("DrawModel", newDrawModel);
return(Ok());
}
return(BadRequest());
}