/// <summary>
/// This adds a LinkedList of objects
/// </summary>
/// <param name="actorList">The list of objects</param>
public void Add(DXMAN.Physics.xVolume[] xObjects)
{
foreach(DXMAN.Physics.xVolume obj in xObjects)
{
Add(obj);
}
}
/// <summary>
/// Checks to see if two lines are intersecting
/// </summary>
/// <param name="xl1">line one</param>
/// <param name="xl2">line two</param>
/// <returns>returns true if two lines are intersecting, false if not</returns>
public static bool LineToLine(DXMAN.Physics.xVolume xl1, DXMAN.Physics.xVolume xl2)
{
DXMAN.Primitives.xLine l1 = (DXMAN.Primitives.xLine)xl1;
DXMAN.Primitives.xLine l2 = (DXMAN.Primitives.xLine)xl2;
// http://astronomy.swin.edu.au/~pbourke/geometry/lineline2d/
// Given line (p1, p2) and line (p3, p4)
// They can be expressed parameticly as:
// i = p1 + a (p2 - p1)
// i = p3 + b (p4 - p3)
// where i is the intersection point and a and b are between 0 and 1
// Bringing the equations together...
// p1 + a (p2 - p1) = p3 + b (p4 - p3)
// This forms two equations:
// a = [(x4 - x3)(y1 - y3) - (y4 - y3)(x1 - x3)] /
// [(y4 - y3)(x2 - x1) - (x4 - x3)(y2 - y1)]
// b = [(x2 - x1)(y1 - y3) - (y2 - y1)(x1 - x3)] /
// [(y4 - y3)(x2 - x1) - (x4 - x3)(y2 - y1)]
// As long as these are between 0 and 1, we have an intersection.
// Oh, and check the denomator isn't zero or else the lines are
// parallel. But if the numerator is zero also, they coincide.
// These are the points
float x1 = l1.Point1.X, y1 = l1.Point1.Y;
float x2 = l1.Point2.X, y2 = l1.Point2.Y;
float x3 = l2.Point1.X, y3 = l2.Point1.Y;
float x4 = l2.Point2.X, y4 = l2.Point2.Y;
// Calculate our interpolation values
float denom = (y4 - y3) * (x2 - x1) - (x4 - x3) * (y2 - y1);
float numer_a = (x4 - x3) * (y1 - y3) - (y4 - y3) * (x1 - x3);
float numer_b = (x2 - x1) * (y1 - y3) - (y2 - y1) * (x1 - x3);
if (denom == 0) // Parallel?
return false;
float a = numer_a / denom;
float b = numer_b / denom;
// Make sure they are between zero and one
if (a >= 0 && a <= 1 && b >= 0 && b <= 1)
return true;
else return false;
}
public override bool CheckOnClick(DXMAN.DirectInput.xMouse mouse)
{
float x1 = (float)mouse.XPos;
float y1 = (float)mouse.YPos;
float x2 = XPos + (Width * .5f);
float y2 = YPos + (Height * .5f);
double distance = DXMAN.Util.xMath.GetDistance(x1, y1, x2, y2);
if(distance <= Radius)
{
if(mouse.OnClick())
{
return true;
}
}
return false;
}
/// <summary>
/// This adds an object to the manager
/// </summary>
/// <param name="actor">The object to add</param>
public void Add(DXMAN.Physics.xVolume obj)
{
m_xObjects.Add(obj);
}
/// <summary>
/// This removes an object from the manager
/// </summary>
/// <param name="actor">The object to remove</param>
public void Remove(DXMAN.Base.xRenderable obj)
{
xObjects.Remove(obj);
}
/// <summary>
/// This adds an object to the manager
/// </summary>
/// <param name="actor">The object to add</param>
public void Add(DXMAN.Base.xRenderable obj)
{
xObjects.Add(obj);
}
public xEventManager(DXMAN.DirectInput.xMouse m)
{
mouse = m;
xObjects = new Util.LinkedList();
}
/// <summary>
/// This removes an object from the manager
/// </summary>
/// <param name="actor">The object to remove</param>
public void Remove(DXMAN.Base.xObject obj)
{
xObjects.Remove(obj);
}
public override bool CheckOnMouseOut(DXMAN.DirectInput.xMouse mouse)
{
float x = (float)mouse.XPos;
float y = (float)mouse.YPos;
float left = XPos;
float right = XPos + Width;
float top = YPos;
float bottom = YPos + Height;
if(x < left || x > right || y < top || y > bottom)
{
if(isMouseOver)
{
return true;
}
else
{
return false;
}
}
return false;
}
/// <summary>
/// Returns the point of intersection
/// </summary>
/// <param name="xl1">line one</param>
/// <param name="xl2">line two</param>
/// <returns>vector3 containing the point of intersection</returns>
public static Vector3 PointOfIntersectionLineToLine(DXMAN.Physics.xVolume xl1, DXMAN.Physics.xVolume xl2)
{
DXMAN.Primitives.xLine l1 = (DXMAN.Primitives.xLine)xl1;
DXMAN.Primitives.xLine l2 = (DXMAN.Primitives.xLine)xl2;
double m1 = (l1.Point2.Y - l1.Point1.Y) / (l1.Point2.X - l1.Point1.X);
double m2 = (l2.Point2.Y - l2.Point1.Y) / (l2.Point2.X - l2.Point1.X);
double b1 = l1.Point1.Y - (m1 * l1.Point1.X);
double b2 = l2.Point1.Y - (m2 * l2.Point1.X);
double x_intersect = (b2 - b1) / (m1 - m2);
double y_intersect = (m1 * x_intersect) + b1;
Vector3 point = new Vector3((float)x_intersect, (float)y_intersect, 0f);
return point;
}
/// <summary>
/// This checks to see if the two volumes are intersecting
/// </summary>
/// <param name="v1">the first volume</param>
/// <param name="v2">the second volume</param>
/// <returns>true if the volume are intersecting, false if not</returns>
public static bool RectToRect(DXMAN.Physics.xVolume v1, DXMAN.Physics.xVolume v2)
{
if(v1.XPos < (v2.XPos + v2.Width) &&
(v1.XPos + v1.Width) > v2.XPos &&
v1.YPos < (v2.YPos + v2.Height) &&
(v1.YPos + v1.Height) > v2.YPos)
{
return true;
}
return false;
}
/// <summary>
/// This checks to see if two radii are intersecting
/// </summary>
/// <param name="v1">the first volume</param>
/// <param name="v2">the second volume</param>
/// <returns>returns true if the radii are intersecting, false if not</returns>
public static bool RadiusToRadius(DXMAN.Physics.xVolume v1, DXMAN.Physics.xVolume v2)
{
double x1 = v1.XPos + v1.Radius;
double y1 = v1.YPos + v1.Radius;
double x2 = v2.XPos + v2.Radius;
double y2 = v2.YPos + v2.Radius;
double distance = (double)DXMAN.Util.xMath.GetDistance((float)x1, (float)y1, (float)x2, (float)y2);
double lengthBetween = v1.Radius + v2.Radius;
if(distance < lengthBetween)
{
return true;
}
return false;
}
public virtual bool CheckOnMouseOver(DXMAN.DirectInput.xMouse mouse)
{
return false;
}
public void defaultEvent(DXMAN.Physics.xVolume obj, DXMAN.Physics.xVolume other)
{
}
public void callOnCollision(DXMAN.Physics.xVolume obj, DXMAN.Physics.xVolume other)
{
OnCollision(obj, other);
}
/// <summary>
/// This adds a LinkedList of objects
/// </summary>
/// <param name="actorList">The list of objects</param>
public void Add(DXMAN.Base.xRenderable[] xObjects)
{
foreach(DXMAN.Base.xRenderable obj in xObjects)
{
Add(obj);
}
}
/// <summary>
/// This removes an object from the manager
/// </summary>
/// <param name="actor">The object to remove</param>
public void Remove(DXMAN.Physics.xVolume obj)
{
m_xObjects.Remove(obj);
}
/// <summary>
/// This adds an object to the manager
/// </summary>
/// <param name="actor">The object to add</param>
public void Add(DXMAN.Base.xObject obj)
{
xObjects.Add(obj);
}
public override bool CheckOnMouseOver(DXMAN.DirectInput.xMouse mouse)
{
float x = (float)mouse.XPos;
float y = (float)mouse.YPos;
float left = XPos;
float right = XPos + Width;
float top = YPos;
float bottom = YPos + Height;
if(x >= left && x <= right && y >= top && y <= bottom)
{
isMouseOver = true;
return true;
}
isMouseOver = false;
return false;
}
public override bool CheckOnMouseOver(DXMAN.DirectInput.xMouse mouse)
{
float x1 = (float)mouse.XPos;
float y1 = (float)mouse.YPos;
float x2 = XPos + (Width / 2);
float y2 = YPos + (Height / 2);
double distance = DXMAN.Util.xMath.GetDistance(x1, y1, x2, y2);
if(distance <= Radius)
{
isMouseOver = true;
return true;
}
isMouseOver = false;
return false;
}
