public float GetBestSnap(out Magnet magnet)
{
float minSnap = SnapController.SnapViewDistance;
magnet = null;
foreach (float key in snapSqDistances.Keys)
{
if (key < minSnap)
{
minSnap = key;
}
}
if (minSnap < SnapController.SnapViewDistance)
{
foreach (Magnet m in snapSqDistances[minSnap])
{
if (magnet == null)
{
magnet = m;
}
else if (((PointMagnet)m).Type == PointMagnetType.EndPoint)
{
magnet = m;
}
if (((PointMagnet)m).Type == PointMagnetType.EndPoint)
{
return(minSnap);
}
}
}
return(minSnap);
}
public float GetBestSnap(out Magnet magnet)
{
float minSnap = SnapController.SnapViewDistance;
magnet = null;
foreach (float key in snapSqDistances.Keys)
{
if (key < minSnap)
{
minSnap = key;
}
}
if (minSnap < SnapController.SnapViewDistance)
{
magnet = snapSqDistances[minSnap];
}
// Override CurrentLine if it's an axis and another LineMagnet
// attached to a LineElement si found
if (magnet != null && currentLine != null &&
(currentLine.Type == LineMagnetType.FollowXAxis ||
currentLine.Type == LineMagnetType.FollowYAxis ||
currentLine.Type == LineMagnetType.FollowZAxis) &&
((LineMagnet)magnet).Type != LineMagnetType.FollowXAxis &&
((LineMagnet)magnet).Type != LineMagnetType.FollowYAxis &&
((LineMagnet)magnet).Type != LineMagnetType.FollowZAxis)
{
CurrentLine = (LineMagnet)magnet;
}
return(minSnap);
}
public SnapController()
{
paintMagnets = new List <Magnet>();
snapMagnet = null;
points = new PointMagnetsCollection();
lines = new LineMagnetsCollection();
area = new AreaMagnet(PointMagnet.ZeroMagnet.Position, CommonAxes.GlobalAxes[2]);
painter = new SnapPainter();
}
public SnapController()
{
paintMagnets = new List<Magnet>();
snapMagnet = null;
points = new PointMagnetsCollection();
lines = new LineMagnetsCollection();
area = new AreaMagnet(PointMagnet.ZeroMagnet.Position, CommonAxes.GlobalAxes[2]);
painter = new SnapPainter();
}
/// <summary>
/// This method paints all the gadgets added by the Snaps
/// (i.e.
/// </summary>
public void Paint(Device device, GraphicView activeView, System.Windows.Forms.MouseEventArgs e)
{
for (int i = 0; i < paintMagnets.Count; i++)
{
Magnet m = paintMagnets[i];
if (m != null)
{
if (m is PointMagnet)
{
byte alpha = 255;
if (m.LastSnapFitness >= EffectiveSnapDistance)
{
alpha = (byte)((1f - (m.LastSnapFitness - EffectiveSnapDistance) /
(SnapViewDistance - EffectiveSnapDistance)) * 128f + 64f);
}
switch (((PointMagnet)m).Type)
{
case PointMagnetType.Perpendicular:
if (alpha == 255 && m.RelatedMagnets.Count > 0 && m.RelatedMagnets[0] is PointMagnet)
{
painter.PaintLineSegment(device, activeView, m.Position, m.RelatedMagnets[0].Position, LineMagnetType.FollowHelper);
}
break;
case PointMagnetType.SimplePoint:
if (alpha == 255 && m.RelatedMagnets.Count > 0 && m.RelatedMagnets[0] is PointMagnet)
{
painter.PaintPointSymbol(device, activeView, m.RelatedMagnets[0].Position, PointMagnetType.SimplePoint, 192);
}
break;
}
painter.PaintPointSymbol(device, activeView, m.Position, ((PointMagnet)m).Type, alpha);
}
else if (m is LineMagnet)
{
LineMagnetType lmt = ((LineMagnet)m).Type;
if (lmt == LineMagnetType.FollowProjection && lines.CurrentLine != null)
{
lmt = LineMagnetType.FollowHelper;
}
painter.PaintLineSegment(device, activeView, m.Position, m.SnapPositionInt, lmt);
}
}
}
if (lines.CurrentLine != null)
{
painter.PaintLineSegment(device, activeView, lines.CurrentLine.Position, lines.CurrentLine.SnapPositionInt, lines.CurrentLine.Type);
}
}
/// <summary>
/// This method returns a Magnet whose SnapPoint property has the point obtained either typed or clicked.
/// </summary>
/// <param name="prompt">The instruction text that appears at the SmallPanel.</param>
/// <returns>The Magnet whose SnapPoint was found.</returns>
public Snap.Magnet GetPoint(string prompt)
{
controller.MainFrm.SmallPanel.Start(controller.ModelCommand.Title, prompt, 10, "1,2,3 " + Culture.Get("or") + " @1,2,3");
wait(WaitingFor.Point, true);
Snap.Magnet m = waitingObj as Snap.Magnet;
if (m == null)
{
return(null);
}
lastPoint = m.SnapPosition;
SnapPrimaryPoint = new Snap.PointMagnet(m.SnapPositionInt, Snap.PointMagnetType.SimplePoint);
return(m);
}
/// <summary>
/// Method to perform calculations based on the user interaction by
/// moving the mouse
/// </summary>
/// <param name="sender">The object calling this method</param>
/// <param name="e">The Mouse event args</param>
/// <returns>A boolean indicating whether a repaint is necessary</returns>
public bool MouseMove(GraphicView activeView, System.Windows.Forms.MouseEventArgs e)
{
bool ret = true;
paintMagnets.Clear();
pickItems(e);
recalcPrimaryDependant(activeView);
// Check snap to acquired magnets
points.Snap(activeView, e);
lines.Snap(activeView, e);
// Get max snap Magnet (the one closer to the mouse position)
Magnet bestMagnet;
float snap, bestSnap, bestPointSnap = points.GetBestSnap(out bestMagnet);
if (bestMagnet == null)
{
bestSnap = lines.GetBestSnap(out bestMagnet);
}
else
{
bestSnap = bestPointSnap;
}
// Update CurrentLine's positions if mouse moved over any of it's joints (if LineMagnet has a Line)
if (lines.CurrentLine != null && bestMagnet != null && bestMagnet is PointMagnet &&
lines.CurrentLine.Line != null && ((PointMagnet)bestMagnet).Joint != null)
{
Joint newJoint = ((PointMagnet)bestMagnet).Joint;
if (newJoint == lines.CurrentLine.Line.I || newJoint == lines.CurrentLine.Line.J)
{
lines.CurrentLine.Position = newJoint.Position;
}
}
#region Intersection
// Check intersections between LineMagnets. If any, create corresponding Magnet
if (lines.CurrentLine != null && bestMagnet is LineMagnet && bestMagnet != lines.CurrentLine)
{
PointMagnet intersectionMagnet = createIntersection(lines.CurrentLine, bestMagnet as LineMagnet, activeView, e);
if (intersectionMagnet != null)
{
snap = intersectionMagnet.Snap(activeView, e.Location) + SnapEpsilon;
if (snap < SnapViewDistance)
{
// Paint helper line
paintMagnets.Add(bestMagnet);
// Paint intersection
paintMagnets.Add(intersectionMagnet);
}
if (snap < bestPointSnap && snap < EffectiveSnapDistance)
{
bestSnap = snap;
bestMagnet = intersectionMagnet;
}
}
}
#endregion
#region Midpoint
// Create midpoint magnet (if mouse is close to a Line)
foreach (Magnet m in lines)
{
PointMagnet midMagnet = createMidPoint(m as LineMagnet, activeView, e);
if (midMagnet != null)
{
snap = midMagnet.Snap(activeView, e.Location) + SnapEpsilon;
if (snap < bestPointSnap && snap < EffectiveSnapDistance)
{
bestSnap = snap;
bestMagnet = midMagnet;
}
}
}
#endregion
#region Perpendicular point
// Create perpendicular magnets (if mouse is close to a line)
PointMagnet perpMagnet = createPerpendicularMagnet(bestMagnet as LineMagnet, activeView, e);
if (perpMagnet != null)
{
snap = perpMagnet.Snap(activeView, e.Location) + SnapEpsilon;
if (snap < (bestPointSnap - SnapEpsilon) && snap < EffectiveSnapDistance)
{
bestSnap = snap;
bestMagnet = perpMagnet;
}
}
#endregion
#region Interesting Distance
// If following a LineMagnet, then set next interesting distance as a PointMagnet
PointMagnet distMagnet = createInterestingDistance(bestMagnet as LineMagnet, activeView, e);
if (distMagnet != null)
{
snap = distMagnet.Snap(activeView, e.Location) + SnapEpsilon;
if (snap < bestPointSnap)
{
bestSnap = snap;
bestMagnet = distMagnet;
}
}
#endregion
// Choose magnets to paint
if ((bestMagnet is LineMagnet) && (lines.CurrentLine == null))
{
lines.CurrentLine = (LineMagnet)bestMagnet;
}
else if ((bestMagnet != null) && !bestMagnet.Equals(lines.CurrentLine))
{
paintMagnets.Add(bestMagnet);
}
// Set the Magnet to snap to if the user clicks the mouse
snapMagnet = null;
if (bestMagnet != null)
{
if (bestMagnet is PointMagnet && bestMagnet.LastSnapFitness < EffectiveSnapDistance)
{
snapMagnet = bestMagnet;
}
else if (lines.CurrentLine != null)
{
snapMagnet = lines.CurrentLine;
}
else if (bestMagnet is LineMagnet)
{
snapMagnet = bestMagnet;
}
}
else
{
area.Snap(activeView, e.Location);
snapMagnet = (Magnet)area.Clone();
}
// TODO: Probably change the IsActive property to some enum, so as to activate snapping to
// specific objects only (i.e. Joint snapping when CommandServices.GetJoint() is working)
return(ret);
}
/// <summary>
/// Method to perform calculations based on the user interaction by
/// moving the mouse
/// </summary>
/// <param name="sender">The object calling this method</param>
/// <param name="e">The Mouse event args</param>
/// <returns>A boolean indicating whether a repaint is necessary</returns>
public bool MouseMove(GraphicView activeView, System.Windows.Forms.MouseEventArgs e)
{
bool ret = true;
paintMagnets.Clear();
pickItems(e);
recalcPrimaryDependant(activeView);
// Check snap to acquired magnets
points.Snap(activeView, e);
lines.Snap(activeView, e);
// Get max snap Magnet (the one closer to the mouse position)
Magnet bestMagnet;
float snap, bestSnap, bestPointSnap = points.GetBestSnap(out bestMagnet);
if (bestMagnet == null)
bestSnap = lines.GetBestSnap(out bestMagnet);
else
bestSnap = bestPointSnap;
// Update CurrentLine's positions if mouse moved over any of it's joints (if LineMagnet has a Line)
if (lines.CurrentLine != null && bestMagnet != null && bestMagnet is PointMagnet &&
lines.CurrentLine.Line != null && ((PointMagnet)bestMagnet).Joint != null)
{
Joint newJoint = ((PointMagnet)bestMagnet).Joint;
if (newJoint == lines.CurrentLine.Line.I || newJoint == lines.CurrentLine.Line.J)
lines.CurrentLine.Position = newJoint.Position;
}
#region Intersection
// Check intersections between LineMagnets. If any, create corresponding Magnet
if (lines.CurrentLine != null && bestMagnet is LineMagnet && bestMagnet != lines.CurrentLine)
{
PointMagnet intersectionMagnet = createIntersection(lines.CurrentLine, bestMagnet as LineMagnet, activeView, e);
if (intersectionMagnet != null)
{
snap = intersectionMagnet.Snap(activeView, e.Location) + SnapEpsilon;
if (snap < SnapViewDistance)
{
// Paint helper line
paintMagnets.Add(bestMagnet);
// Paint intersection
paintMagnets.Add(intersectionMagnet);
}
if (snap < bestPointSnap && snap < EffectiveSnapDistance)
{
bestSnap = snap;
bestMagnet = intersectionMagnet;
}
}
}
#endregion
#region Midpoint
// Create midpoint magnet (if mouse is close to a Line)
foreach (Magnet m in lines)
{
PointMagnet midMagnet = createMidPoint(m as LineMagnet, activeView, e);
if (midMagnet != null)
{
snap = midMagnet.Snap(activeView, e.Location) + SnapEpsilon;
if (snap < bestPointSnap && snap < EffectiveSnapDistance)
{
bestSnap = snap;
bestMagnet = midMagnet;
}
}
}
#endregion
#region Perpendicular point
// Create perpendicular magnets (if mouse is close to a line)
PointMagnet perpMagnet = createPerpendicularMagnet(bestMagnet as LineMagnet, activeView, e);
if (perpMagnet != null)
{
snap = perpMagnet.Snap(activeView, e.Location) + SnapEpsilon;
if (snap < (bestPointSnap - SnapEpsilon) && snap < EffectiveSnapDistance)
{
bestSnap = snap;
bestMagnet = perpMagnet;
}
}
#endregion
#region Interesting Distance
// If following a LineMagnet, then set next interesting distance as a PointMagnet
PointMagnet distMagnet = createInterestingDistance(bestMagnet as LineMagnet, activeView, e);
if (distMagnet != null)
{
snap = distMagnet.Snap(activeView, e.Location) + SnapEpsilon;
if (snap < bestPointSnap)
{
bestSnap = snap;
bestMagnet = distMagnet;
}
}
#endregion
// Choose magnets to paint
if ((bestMagnet is LineMagnet) && (lines.CurrentLine == null))
lines.CurrentLine = (LineMagnet)bestMagnet;
else if ((bestMagnet != null) && !bestMagnet.Equals(lines.CurrentLine))
paintMagnets.Add(bestMagnet);
// Set the Magnet to snap to if the user clicks the mouse
snapMagnet = null;
if (bestMagnet != null)
{
if (bestMagnet is PointMagnet && bestMagnet.LastSnapFitness < EffectiveSnapDistance)
snapMagnet = bestMagnet;
else if (lines.CurrentLine != null)
snapMagnet = lines.CurrentLine;
else if (bestMagnet is LineMagnet)
snapMagnet = bestMagnet;
}
else
{
area.Snap(activeView, e.Location);
snapMagnet = (Magnet)area.Clone();
}
// TODO: Probably change the IsActive property to some enum, so as to activate snapping to
// specific objects only (i.e. Joint snapping when CommandServices.GetJoint() is working)
return ret;
}
protected void copyToMagnet(Magnet dstMagnet)
{
dstMagnet.position = position;
dstMagnet.lastSnapFitness = lastSnapFitness;
dstMagnet.relatedMagnets = (relatedMagnets != null) ? new List<Magnet>(relatedMagnets) : null;
}
protected void copyToMagnet(Magnet dstMagnet)
{
dstMagnet.position = position;
dstMagnet.lastSnapFitness = lastSnapFitness;
dstMagnet.relatedMagnets = (relatedMagnets != null) ? new List <Magnet>(relatedMagnets) : null;
}
