public void PointOnLineMidpoint()
{
var sketch = Sketch.Create();
var p1 = sketch.AddPoint(new Pnt2d(3, -10));
var p2 = sketch.AddPoint(new Pnt2d(3, 10));
var line = new SketchSegmentLine(p1, p2);
var s1 = sketch.AddSegment(line);
var p3 = sketch.AddPoint(new Pnt2d(-5, -5));
var p4 = sketch.AddPoint(new Pnt2d(20, 20));
var s2 = sketch.AddSegment(new SketchSegmentLine(p3, p4));
var c1 = sketch.AddConstraint(new SketchConstraintPointOnMidpoint(p3, s1));
Assert.IsTrue(sketch.SolveConstraints(true));
var pointOnCurve = new Geom2dAPI_ProjectPointOnCurve(sketch.Points[p3], line.MakeCurve(sketch.Points));
Assert.AreEqual(1, pointOnCurve.NbPoints());
Assert.AreEqual(0.0, pointOnCurve.Distance(1), MaxLengthDelta);
sketch.Points[p3] = new Pnt2d(18, 18);
Assert.IsTrue(sketch.SolveConstraints(true));
pointOnCurve = new Geom2dAPI_ProjectPointOnCurve(sketch.Points[p3], new Geom2d_Line(line.GetLine(sketch.Points)));
Assert.AreEqual(1, pointOnCurve.NbPoints());
Assert.AreEqual(0.0, pointOnCurve.Distance(1), MaxLengthDelta);
Assert.AreEqual(pointOnCurve.Point(1).Distance(sketch.Points[p1]), pointOnCurve.Point(1).Distance(sketch.Points[p2]), MaxLengthDelta);
}
//--------------------------------------------------------------------------------------------------
bool _CalcArcRimPoints(Pnt2d endPoint)
{
// Project end point on circle
var startPoint = _Points[0];
if ((startPoint.Distance(endPoint) <= 0) || (endPoint.Distance(_CenterPoint) <= 0) || (startPoint.Distance(_CenterPoint) <= 0))
{
return(false);
}
var xAxis = new Ax2d(_CenterPoint, new Dir2d(new Vec2d(_CenterPoint, startPoint)));
var radius = _CenterPoint.Distance(startPoint);
var circ = new gp_Circ2d(xAxis, radius, _ArcDirection);
var projEndPoint = new Geom2dAPI_ProjectPointOnCurve(endPoint, new Geom2d_Circle(circ)).NearestPoint();
// Check if we should toggle the direction
var endParameter = ElCLib.Parameter(circ, projEndPoint);
// If the last parameter was very small (~PI/2), and the current is very high (~PI*1.5), toggle direction
if (((_LastEndParameter < 1) && (endParameter > 5)) ||
((endParameter < 1) && (_LastEndParameter > 5)))
{
_ArcDirection = !_ArcDirection;
circ = new gp_Circ2d(xAxis, radius, _ArcDirection);
endParameter = ElCLib.Parameter(circ, projEndPoint);
}
_LastEndParameter = endParameter;
// Calc rim point
var rimPoint = ElCLib.Value(endParameter / 2, circ);
_Points[1] = projEndPoint;
_Points[2] = rimPoint;
return(true);
}
public void PointOnSegmentCircle()
{
var sketch = Sketch.Create();
var p1 = sketch.AddPoint(new Pnt2d(3, -10));
var p2 = sketch.AddPoint(new Pnt2d(3, 10));
var circle = new SketchSegmentCircle(p1, p2);
var s1 = sketch.AddSegment(circle);
var p3 = sketch.AddPoint(new Pnt2d(-5, -5));
var p4 = sketch.AddPoint(new Pnt2d(20, 20));
var s2 = sketch.AddSegment(new SketchSegmentLine(p3, p4));
var c1 = sketch.AddConstraint(new SketchConstraintPointOnSegment(p3, s1));
Assert.IsTrue(sketch.SolveConstraints(true));
var pointOnCurve = new Geom2dAPI_ProjectPointOnCurve(sketch.Points[p3], circle.MakeCurve(sketch.Points));
Assert.AreEqual(2, pointOnCurve.NbPoints());
Assert.AreEqual(0.0, pointOnCurve.Distance(2), MaxLengthDelta);
// Out of range
sketch.Points[p3] = new Pnt2d(18, 18);
Assert.IsTrue(sketch.SolveConstraints(true));
pointOnCurve = new Geom2dAPI_ProjectPointOnCurve(sketch.Points[p3], circle.MakeCurve(sketch.Points));
Assert.AreEqual(2, pointOnCurve.NbPoints());
Assert.AreEqual(0.0, pointOnCurve.Distance(2), MaxLengthDelta);
}
//--------------------------------------------------------------------------------------------------
void ProcessMouseInput(MouseEventData data)
{
SelectedSegment = null;
SelectedPointIndex = -1;
SelectedElementType = Sketch.ElementType.None;
var element = _SketchEditorTool.Elements.FindOwner(data.DetectedAisInteractives.FirstOrDefault());
if (element == null)
{
return;
}
if (element is SketchEditorSegmentElement segmentElement)
{
//
// Segment
//
var segment = segmentElement.Segment;
if (!SketchUtils.CanSplitSegment(_SketchEditorTool.Sketch, segment))
{
return;
}
var curve = segment.CachedCurve ?? segment.MakeCurve(_SketchEditorTool.Sketch.Points);
if (curve == null)
{
return;
}
// Get new point from parameters
double u = 0, v = 0;
ElSLib.Parameters(_SketchEditorTool.Sketch.Plane, data.PointOnPlane, ref u, ref v);
var sketchPoint = new Pnt2d(u, v);
var pointOnCurve = new Geom2dAPI_ProjectPointOnCurve(sketchPoint, curve);
if (pointOnCurve.NbPoints() < 1)
{
return;
}
SelectedParameter = pointOnCurve.LowerDistanceParameter();
SelectedSegment = segment;
_SelectedPoint = _SketchEditorTool.Sketch.Plane.Value(curve.Value(SelectedParameter));
SelectedElementType = Sketch.ElementType.Segment;
}
else if (element is SketchEditorPointElement pointElement)
{
//
// Point
//
var pointIndex = pointElement.PointIndex;
if (!SketchUtils.CanSplitPoint(_SketchEditorTool.Sketch, pointIndex))
{
return;
}
SelectedPointIndex = pointIndex;
_SelectedPoint = _SketchEditorTool.Sketch.Plane.Value(_SketchEditorTool.Sketch.Points[pointIndex]);
SelectedElementType = Sketch.ElementType.Point;
}
}