public override bool HitTest(HitLine hit)
{
if (Anchor2 == null)
return false;
for (int i = 0; i < solidPoints.Length - 1; i++)
{
HitLine line = new HitLine()
{
Front = solidPoints[i],
Back = solidPoints[i + 1],
Camera = hit.Camera
};
if (line.ShortestDistance(hit) < HitTol * hit.Camera.SceneToWorldScaling)
{
lastHit = hit.GetIntersection((ParentEntity as Sketch).Plane);
return true;
}
}
return false;
}
public override bool HitTest(HitLine hit)
{
if (Points.Count == 0)
return false;
for (int i = 0; i < Points.Count - 1; i++)
{
HitLine line = new HitLine() {
Front = Points[i].ToVector(),
Back = Points[i+1].ToVector(),
Camera = hit.Camera
};
if (line.ShortestDistance(hit) < HitTol * hit.Camera.SceneToWorldScaling)
{
lastHit = hit.GetIntersection((ParentEntity as Sketch).Plane);
return true;
}
}
return false;
}
public override bool HitTest(HitLine hit)
{
if (Center == null)
return false;
// set the last hit, even if we didn't hit anything
lastHit = hit.GetIntersection((ParentEntity as Sketch).Plane);
// test for hitting the center
Coord center = hit.Camera.WorldToScreen(Center.ToVector());
double distance = (hit.Screen - center).Magnitude;
if (distance < Arc.HitTol)
return true;
if (Start == null)
return false;
// test for hitting the circle
Coord start = hit.Camera.WorldToScreen(Start.ToVector());
double radius = (start - center).Magnitude;
if (Math.Abs(distance - radius) < Arc.HitTol)
return true;
return false;
}
/// <summary>
/// Finds the intersection of the hit line and the plane.
/// </summary>
/// <remarks>The vector will be snapped if ModelingOptions.Global.SnapToGrid.</remarks>
public Vector GetIntersection(HitLine hit)
{
Vector vec = hit.GetIntersection(this);
if (ModelingOptions.Global.SnapToGrid)
vec = SnapToGrid(vec);
return vec;
}
/// <summary>
/// Gets a point in control-space corresponding to the hit line in 3D space.
/// </summary>
private Coord GetControlPoint(HitLine hitLine)
{
if (RenderSize == null)
return new Coord();
var intersection = hitLine.GetIntersection(this);
var point = this.Project(intersection) / _scaling;
point.Y = RenderHeight - point.Y;
return point;
}
public override bool HitTest(HitLine hit)
{
if (Anchor2 == null)
return false;
// get the major and minor axes
Vector x = Sketch.Plane.LocalX;
Vector y = Sketch.Plane.LocalY;
Vector center = Center.ToVector();
double a = x.Dot(Anchor2.ToVector() - center);
double b = y.Dot(Anchor2.ToVector() - center);
// rotate the coordinate system to the tilt
if (Tilt.Value != 0)
{
x = x.Rotate((ParentEntity as Sketch).Plane.Normal, Tilt);
y = y.Rotate((ParentEntity as Sketch).Plane.Normal, Tilt);
}
// project the hit onto the plane's coordinate system
lastHit = hit.GetIntersection((ParentEntity as Sketch).Plane);
double hitX = (lastHit - center).Dot(x);
double hitY = (lastHit - center).Dot(y);
// test for the hit
double hitTol = 0.1;
if (Math.Abs(1 - hitX * hitX / (a * a) - hitY * hitY / (b * b)) < hitTol)
return true;
return false;
}