|
public GetNearestForce ( Vector3 position, |
||
| position | Vector3 |
/// A |
| constraint |
/// A |
|
| return | ||
/** Will calculate a number of points around \a p which are on the graph and are separated by \a clearance from each other.
* The maximum distance from \a p to any point will be \a radius.
* Points will first be tried to be laid out as \a previousPoints and if that fails, random points will be selected.
* This is great if you want to pick a number of target points for group movement. If you pass all current agent points from e.g the group's average position
* this method will return target points so that the units move very little within the group, this is often aesthetically pleasing and reduces jitter if using
* some kind of local avoidance.
*
* \param g The graph to use for linecasting. If you are only using one graph, you can get this by AstarPath.active.graphs[0] as IRaycastableGraph.
* Note that not all graphs are raycastable, recast, navmesh and grid graphs are raycastable. On recast and navmesh it works the best.
* \param previousPoints The points to use for reference. Note that these should not be in world space. They are treated as relative to \a p.
*/
public static void GetPointsAroundPoint(Vector3 p, IRaycastableGraph g, List <Vector3> previousPoints, float radius, float clearanceRadius)
{
if (g == null)
{
throw new System.ArgumentNullException("g");
}
NavGraph graph = g as NavGraph;
if (graph == null)
{
throw new System.ArgumentException("g is not a NavGraph");
}
NNInfo nn = graph.GetNearestForce(p, NNConstraint.Default);
p = nn.clampedPosition;
if (nn.node == null)
{
// No valid point to start from
return;
}
// Make sure the enclosing circle has a radius which can pack circles with packing density 0.5
radius = Mathf.Max(radius, 1.4142f * clearanceRadius * Mathf.Sqrt(previousPoints.Count));//Mathf.Sqrt(previousPoints.Count*clearanceRadius*2));
clearanceRadius *= clearanceRadius;
for (int i = 0; i < previousPoints.Count; i++)
{
Vector3 dir = previousPoints[i];
float magn = dir.magnitude;
if (magn > 0)
{
dir /= magn;
}
float newMagn = radius; //magn > radius ? radius : magn;
dir *= newMagn;
bool worked = false;
GraphHitInfo hit;
int tests = 0;
do
{
Vector3 pt = p + dir;
if (g.Linecast(p, pt, nn.node, out hit))
{
pt = hit.point;
}
for (float q = 0.1f; q <= 1.0f; q += 0.05f)
{
Vector3 qt = (pt - p) * q + p;
worked = true;
for (int j = 0; j < i; j++)
{
if ((previousPoints[j] - qt).sqrMagnitude < clearanceRadius)
{
worked = false;
break;
}
}
if (worked)
{
previousPoints[i] = qt;
break;
}
}
if (!worked)
{
// Abort after 8 tries
if (tests > 8)
{
worked = true;
}
else
{
clearanceRadius *= 0.9f;
// This will pick points in 2D closer to the edge of the circle with a higher probability
dir = Random.onUnitSphere * Mathf.Lerp(newMagn, radius, tests / 5);
dir.y = 0;
tests++;
}
}
} while (!worked);
}
}
// Token: 0x060027A4 RID: 10148 RVA: 0x001B33F8 File Offset: 0x001B15F8
public static void GetPointsAroundPoint(Vector3 center, IRaycastableGraph g, List <Vector3> previousPoints, float radius, float clearanceRadius)
{
if (g == null)
{
throw new ArgumentNullException("g");
}
NavGraph navGraph = g as NavGraph;
if (navGraph == null)
{
throw new ArgumentException("g is not a NavGraph");
}
NNInfoInternal nearestForce = navGraph.GetNearestForce(center, NNConstraint.Default);
center = nearestForce.clampedPosition;
if (nearestForce.node == null)
{
return;
}
radius = Mathf.Max(radius, 1.4142f * clearanceRadius * Mathf.Sqrt((float)previousPoints.Count));
clearanceRadius *= clearanceRadius;
int i = 0;
while (i < previousPoints.Count)
{
Vector3 vector = previousPoints[i];
float magnitude = vector.magnitude;
if (magnitude > 0f)
{
vector /= magnitude;
}
float num = radius;
vector *= num;
int num2 = 0;
Vector3 vector2;
for (;;)
{
vector2 = center + vector;
GraphHitInfo graphHitInfo;
if (g.Linecast(center, vector2, nearestForce.node, out graphHitInfo))
{
if (graphHitInfo.point == Vector3.zero)
{
num2++;
if (num2 > 8)
{
goto Block_7;
}
}
else
{
vector2 = graphHitInfo.point;
}
}
bool flag = false;
for (float num3 = 0.1f; num3 <= 1f; num3 += 0.05f)
{
Vector3 vector3 = Vector3.Lerp(center, vector2, num3);
flag = true;
for (int j = 0; j < i; j++)
{
if ((previousPoints[j] - vector3).sqrMagnitude < clearanceRadius)
{
flag = false;
break;
}
}
if (flag || num2 > 8)
{
flag = true;
previousPoints[i] = vector3;
break;
}
}
if (flag)
{
break;
}
clearanceRadius *= 0.9f;
vector = UnityEngine.Random.onUnitSphere * Mathf.Lerp(num, radius, (float)(num2 / 5));
vector.y = 0f;
num2++;
}
IL_19D:
i++;
continue;
Block_7:
previousPoints[i] = vector2;
goto IL_19D;
}
}
public static void GetPointsAroundPoint(Vector3 p, IRaycastableGraph g, List <Vector3> previousPoints, float radius, float clearanceRadius)
{
if (g == null)
{
throw new ArgumentNullException("g");
}
NavGraph navGraph = g as NavGraph;
if (navGraph == null)
{
throw new ArgumentException("g is not a NavGraph");
}
NNInfoInternal nearestForce = navGraph.GetNearestForce(p, NNConstraint.Default);
p = nearestForce.clampedPosition;
if (nearestForce.node == null)
{
return;
}
radius = Mathf.Max(radius, 1.4142f * clearanceRadius * Mathf.Sqrt((float)previousPoints.Count));
clearanceRadius *= clearanceRadius;
for (int i = 0; i < previousPoints.Count; i++)
{
Vector3 vector = previousPoints[i];
float magnitude = vector.magnitude;
if (magnitude > 0f)
{
vector /= magnitude;
}
float num = radius;
vector *= num;
bool flag = false;
int num2 = 0;
do
{
Vector3 vector2 = p + vector;
GraphHitInfo graphHitInfo;
if (g.Linecast(p, vector2, nearestForce.node, out graphHitInfo))
{
vector2 = graphHitInfo.point;
}
for (float num3 = 0.1f; num3 <= 1f; num3 += 0.05f)
{
Vector3 vector3 = (vector2 - p) * num3 + p;
flag = true;
for (int j = 0; j < i; j++)
{
if ((previousPoints[j] - vector3).sqrMagnitude < clearanceRadius)
{
flag = false;
break;
}
}
if (flag)
{
previousPoints[i] = vector3;
break;
}
}
if (!flag)
{
if (num2 > 8)
{
flag = true;
}
else
{
clearanceRadius *= 0.9f;
vector = UnityEngine.Random.onUnitSphere * Mathf.Lerp(num, radius, (float)(num2 / 5));
vector.y = 0f;
num2++;
}
}
}while (!flag);
}
}
