public Point GetPoint(double angle, double offset) { var v0 = new Vector(this.Radius + offset, 0); var rotate = v0.Rotate(angle); var p = this.Centre + rotate; return p; }
public void FirstIntersectionWithCircleFromOutsideRoundtrips(string cs) { var circle = Circle.Parse(cs); var xv = new Vector(1, 0); for (var i = -180; i < 180; i++) { var direction = xv.Rotate(i); var pointOnCircumference = circle.PointOnCircumference(direction); var ray = new Ray(pointOnCircumference + direction, direction.Negated()); var actual = ray.FirstIntersectionWith(circle); Assert.Equal(pointOnCircumference, actual, NullablePointComparer.Default); } }
public void FirstIntersectionWithEllipseFromInsideRoundtrips(string es) { var ellipse = Ellipse.Parse(es); var xv = new Vector(1, 0); for (var i = -180; i < 180; i++) { var direction = xv.Rotate(i); var expected = ellipse.PointOnCircumference(direction); var ray = new Ray(ellipse.CenterPoint, direction); var actual = ray.FirstIntersectionWith(ellipse); Assert.Equal(expected, actual, NullablePointComparer.Default); } }
public void FirstIntersectionWithRectFromOutsideRoundtrips(string rs) { var rect = Rect.Parse(rs); var xAxis = new Vector(1, 0); for (var i = -180; i < 180; i++) { var direction = xAxis.Rotate(i); var fromCenter = new Ray(rect.CenterPoint(), direction); var pointOnRect = fromCenter.FirstIntersectionWith(rect).GetValueOrDefault(); var ray = new Ray(pointOnRect + direction, direction.Negated()); var actual = ray.FirstIntersectionWith(rect); Assert.Equal(pointOnRect, actual, NullablePointComparer.Default); if (rect.ClosestCornerPoint(pointOnRect) .DistanceTo(pointOnRect) < 0.01) { continue; } Vector wallNormal; if (Math.Abs(pointOnRect.X - rect.Left) < Constants.Tolerance) { wallNormal = new Vector(-1, 0); } else if(Math.Abs(pointOnRect.X - rect.Right) < Constants.Tolerance) { wallNormal = new Vector(1, 0); } else if (Math.Abs(pointOnRect.Y - rect.Bottom) < Constants.Tolerance) { wallNormal = new Vector(0, 1); } else // if (pointOnRect.Y == rect.Top) { wallNormal = new Vector(0, -1); } for (var j = -89; j < 89; j++) { var rayDirection = wallNormal.Rotate(j); ray = new Ray(pointOnRect + rayDirection, rayDirection.Negated()); actual = ray.FirstIntersectionWith(rect); if (!NullablePointComparer.Default.Equals(pointOnRect, actual)) { Debugger.Break(); } Assert.Equal(pointOnRect, actual, NullablePointComparer.Default); } } }
public void FirstIntersectionWithEllipseFromOutsideRoundtrips(string es) { var ellipse = Ellipse.Parse(es); var xv = new Vector(1, 0); for (var i = -180; i < 180; i++) { var fromCenterDirection = xv.Rotate(i); var pointOnCircumference = ellipse.PointOnCircumference(fromCenterDirection); var ray = new Ray(pointOnCircumference + fromCenterDirection, fromCenterDirection.Negated()); var actual = ray.FirstIntersectionWith(ellipse); Assert.Equal(pointOnCircumference, actual, NullablePointComparer.Default); for (var j = -70; j < 70; j++) { var direction = fromCenterDirection.Rotate(j); ray = new Ray(pointOnCircumference + direction, direction.Negated()); actual = ray.FirstIntersectionWith(ellipse); //if (!NullablePointComparer.Default.Equals(pointOnCircumference, actual)) //{ // Debugger.Break(); //} Assert.Equal(pointOnCircumference, actual, NullablePointComparer.Default); } } }
private static Animation CreateNetworkAnimation(Animation animation, Ani<GraphMessages> state, Lifetime life) { // --- end points // timeline animation.LinkMany( state.Select(s => s.Graph.EndPoints.Select( p => new LineSegmentDesc( new Point(s.Graph.GetX(p.Skew), s.Graph.GetY(p)).Sweep(new Vector(1000, 0)), Brushes.Black, 3))), life); // timeline label animation.LinkMany( state.Select(s => s.Graph.EndPoints.Select( p => new TextDesc( text: p.Name, pos: new Point(s.Graph.GetX(p.Skew), s.Graph.GetY(p)), fontWeight: FontWeights.Bold, reference: new Point(1.1, 0.5)))), life); // tick marks animation.LinkMany( state.Select(s => s.Graph.EndPoints.SelectMany( p => 10.Range().Select( j => new LineSegmentDesc( new Point(s.Graph.GetX(p.Skew + j.Seconds()), s.Graph.GetY(p) - 5).Sweep(new Vector(0, 10)), Brushes.Black, 2)))), life); // tick labels animation.LinkMany( state.Select(s => s.Graph.EndPoints.SelectMany( p => 10.Range().Select( j => new TextDesc( text: (j + "s"), pos: new Point(s.Graph.GetX(p.Skew + j.Seconds()), s.Graph.GetY(p) - 5) + new Vector(0, -2), fontSize: 10)))), life); // --- measurements var measurements = from s in state select from m in s.Measurements let x1 = s.Graph.GetX(m.X1) let y1 = s.Graph.GetY(m.V1) let x2 = s.Graph.GetX(m.X2) let y2 = s.Graph.GetY(m.V2) let y = m.Y ?? ((y1 + y2)/2) select new {s, m, x1, y1, x2, y2, y}; animation.LinkMany( measurements.LiftSelect( e => new LineSegmentDesc( new LineSegment(new Point(e.x1, e.y), new Point(e.x2, e.y)), Brushes.Black, 2, 1)), life); animation.LinkMany( measurements.LiftSelect( e => new LineSegmentDesc( new LineSegment(new Point(e.x1, e.y1), new Point(e.x1, e.y)), Brushes.Red, dashed: 1)), life); animation.LinkMany( measurements.LiftSelect( e => new LineSegmentDesc( new LineSegment(new Point(e.x2, e.y2), new Point(e.x2, e.y)), Brushes.Red, dashed: 1)), life); var off1 = new Vector(5, -5); var off2 = new Vector(5, 12); animation.LinkMany( measurements.LiftSelect( e => new TextDesc( text: e.m.Text, pos: new Point(Math.Max(e.x1, e.x2), e.y) + off1.Rotate(e.m.Angle), direction: e.m.Angle)), life); animation.LinkMany( measurements.LiftSelect( e => new TextDesc( text: string.Format("{0:0.00}s", (e.m.X2 - e.m.X1).TotalSeconds), pos: new Point(Math.Max(e.x1, e.x2), e.y) + off2.Rotate(e.m.Angle), direction: e.m.Angle)), life); // messages animation.LinkMany( state.Select(e => e.Messages).LiftSelect( e => new LineSegmentDesc( e.Pos, Brushes.Black)), life); animation.LinkMany( state.Select(e => e.Messages.SelectMany( m => new[] {m.PosSourcePoint, m.PosEndPoint}.Select( p => new PointDesc( p, Brushes.Transparent, Brushes.Black, 3, 0)))), life); animation.LinkMany( state.Select(e => e.Messages).LiftSelect( e => new TextDesc( text: "-> " + e.Text + " ->", pos: e.Pos.LerpAcross(0.1), fontSize: 10, direction: Dir.FromVector(e.Pos.Delta.X, e.Pos.Delta.Y), foreground: Brushes.Gray)), life); return animation; }