protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
// Calculate the position of the click
Vector2 po = new Vector2(m_Camera.x + e.X, m_Camera.y - e.Y);
// Create the new mouse event
SplineMouseEventArgs me = new SplineMouseEventArgs(e, po, BezierMode, Radius, Thickness, Thickness);
// Set the selected knot
me.Selected = m_Selected;
// Call knots move function
SplineMouseMove(this, me);
// Set the selected knot
m_Selected = me.Selected;
// Is there a selected spline?
if (m_Selected != null)
{
// Invalide the graphics
Invalidate();
}
}
// Events relating to the mouse
#region Mouse Events
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
// Calculate the position of the click
Vector2 po = new Vector2(m_Camera.x + e.X, m_Camera.y - e.Y);
// Create the new mouse event
SplineMouseEventArgs me = new SplineMouseEventArgs(e, po, BezierMode, Radius, Thickness, Thickness);
// Set the selected knot
me.Selected = m_Selected;
// Was left button clicked?
if (e.Button == MouseButtons.Left)
{
// Call knots move function
SplineMouseClick(this, me);
// Set the selected knot
m_Selected = me.Selected;
// Was no knot selected?
if (m_Selected == null)
{
// Was the knot successfully added?
if (AddKnot(po))
{
// Call the on knot added event
SplineKnotInserted(this, new SplineEventArgs(BezierMode, Radius, Thickness, Thickness));
// Invalidate the graphics
Invalidate();
}
else
{
// Set mouse to down
Capture = true;
}
}
}
// Was the remove button clicked?
else if (e.Button == MouseButtons.Right)
{
// Was the knot successfully removed?
if (RemoveKnot(po))
{
// Reset interpolation time
InterpolationTime = 0f;
// Call the on knot removed event
SplineKnotRemoved(this, new SplineEventArgs(BezierMode, Radius, Thickness, Thickness));
// Invalidate the graphics
Invalidate();
}
}
}
private void MouseMove_Hermite(Vector2 p, SplineMouseEventArgs e)
{
// Switch based on knots selection
switch (SelControl)
{
case SelectedControl.Point:
{
// Set the points position
Position = p;
// Re-calculate control points
m_Front = m_Point - m_In / 3f;
m_After = m_Point + m_Out / 3f;
// Break from this case
break;
}
case SelectedControl.In:
{
// Keep tangents equal
Before = p;
After = m_Point + (m_Point - m_Front);
// Break from this case
break;
}
case SelectedControl.Out:
{
// Keep tangents equal
After = p;
Before = m_Point - (m_After - m_Point);
// Break from this case
break;
}
default:
{
break;
}
}
}
private void MouseMove_Bezier(Vector2 p, SplineMouseEventArgs e)
{
// Switch based on knots selection
switch (SelControl)
{
case SelectedControl.Point:
{
// Set the points position
Position = p;
// Re-calculate tangents
m_In = 3f * (m_Point - m_Front);
m_Out = 3f * (m_After - m_Point);
// Break from this case
break;
}
case SelectedControl.In:
{
// Set the points in tangent
Before = p;
// Break from this case
break;
}
case SelectedControl.Out:
{
// Set the points out tangent
After = p;
// Break from this case
break;
}
default:
{
break;
}
}
}
public void MouseMove(object sender, SplineMouseEventArgs e)
{
// Get sender as a spline tab
SplineTab tb = sender as SplineTab;
// Assure sender was a spline tab
if (tb == null)
{
throw new Exception("Sender for knots must be spline tab");
}
// Is bezier being constructed?
if (e.Bezier)
{
// Move bezier tools
MouseMove_Bezier(e.Point, e);
}
else
{
// Move hermite tools
MouseMove_Hermite(e.Point, e);
}
}
// Functions related to the mouse
#region Mouse Functions
public void MouseClick(object sender, SplineMouseEventArgs e)
{
// Get sender as a spline tab
SplineTab tb = sender as SplineTab;
// Assure sender was a spline tab
if (tb == null)
{
throw new Exception("Sender for knots must be spline tab");
}
// Check if point was clicked first
if ((e.Point - m_Point).Magnitude() <= e.Radius)
{
// Set this knot to being selected
e.Selected = this;
// Set the selected control to the point
SelControl = SelectedControl.Point;
// End this function
return;
}
// Create booleans to capture result
bool hasFront = false;
bool hasAfter = false;
// Is bezier mode active?
if (e.Bezier)
{
// Create bound rectangle
Vector2 BU = new Vector2(e.Radius, e.Radius);
// Calculate fronts bounding box
Vector2 FLL = m_Front - BU;
Vector2 FUR = m_Front + BU;
// Calculate afters bounding box
Vector2 ALL = m_After - BU;
Vector2 AUR = m_After + BU;
// Set if mouse is contained in either
hasFront = (e.Point.x >= FLL.x && e.Point.x <= FUR.x) && (e.Point.y >= FLL.y && e.Point.y <= FUR.y);
hasAfter = (e.Point.x >= ALL.x && e.Point.x <= AUR.x) && (e.Point.y >= ALL.y && e.Point.y <= AUR.y);
}
else
{
// Set if mouse is contained in either
hasFront = (e.Point - m_Front).Magnitude() <= e.Radius;
hasAfter = (e.Point - m_After).Magnitude() <= e.Radius;
}
// Was mouse contained by the in tangent?
if (hasFront)
{
// Set this knot to being selected
e.Selected = this;
// Set the selected control to the in tangent
SelControl = SelectedControl.In;
// End this function
return;
}
// Was the mouse contained by the out tangent?
if (hasAfter)
{
// Set this knot to being selected
e.Selected = this;
// Set the selected control to the out tangent
SelControl = SelectedControl.Out;
// End this function
return;
}
// Set no control to being selected
SelControl = SelectedControl.None;
}
