public static void CreatePreviewObjects(Component_Scene scene, Component_Surface surface)
{
DestroyPreviewObjects(scene);
var center = Vector3.Zero;
//!!!!среднее от всех групп
double minDistanceBetweenObjects;
{
var groups = surface.GetComponents <Component_SurfaceGroupOfElements>();
if (groups.Length != 0)
{
minDistanceBetweenObjects = 0;
foreach (var group in groups)
{
minDistanceBetweenObjects += group.MinDistanceBetweenObjects;
}
minDistanceBetweenObjects /= groups.Length;
}
else
{
minDistanceBetweenObjects = 1;
}
}
//!!!!
var toolRadius = minDistanceBetweenObjects * 5; // CreateObjectsBrushRadius;
var toolStrength = 1.0; // CreateObjectsBrushStrength;
var toolHardness = 0; // CreateObjectsBrushHardness;
var random = new Random(0);
double GetHardnessFactor(double length)
{
if (length == 0 || length <= toolHardness * toolRadius)
{
return(1);
}
else
{
double c;
if (toolRadius - toolRadius * toolHardness != 0)
{
c = (length - toolRadius * toolHardness) / (toolRadius - toolRadius * toolHardness);
}
else
{
c = 0;
}
return((float)Math.Cos(Math.PI / 2 * c));
}
}
//calculate object count
int count;
{
var toolSquare = Math.PI * toolRadius * toolRadius;
double radius = minDistanceBetweenObjects / 2;
double objectSquare = Math.PI * radius * radius;
if (objectSquare < 0.1)
{
objectSquare = 0.1;
}
double maxCount = toolSquare / objectSquare;
maxCount /= 10;
count = (int)(toolStrength * (double)maxCount);
count = Math.Max(count, 1);
count *= 20;
}
var data = new List <Component_GroupOfObjects.Object>(count);
//create point container to check by MinDistanceBetweenObjects
PointContainer3D pointContainerFindFreePlace;
{
double minDistanceBetweenObjectsMax = 0;
foreach (var group in surface.GetComponents <Component_SurfaceGroupOfElements>())
{
minDistanceBetweenObjectsMax = Math.Max(minDistanceBetweenObjectsMax, group.MinDistanceBetweenObjects);
}
var bounds = new Bounds(center);
bounds.Expand(toolRadius + minDistanceBetweenObjectsMax);
pointContainerFindFreePlace = new PointContainer3D(bounds, 100);
}
for (int n = 0; n < count; n++)
{
surface.GetRandomVariation(new Component_Surface.GetRandomVariationOptions(), random, out var groupIndex, out var elementIndex, out var positionZ, out var rotation, out var scale);
var surfaceGroup = surface.GetGroup(groupIndex);
Vector3?position = null;
int counter = 0;
while (counter < 20)
{
var offset = new Vector2(random.Next(toolRadius * 2) - toolRadius, random.Next(toolRadius * 2) - toolRadius);
//check by radius and by hardness
var length = offset.Length();
if (length <= toolRadius && random.NextDouble() <= GetHardnessFactor(length))
{
var position2 = center.ToVector2() + offset;
//var result = Component_Scene_Utility.CalculateObjectPositionZ( Scene, toGroupOfObjects, center.Z, position2, destinationCachedBaseObjects );
//if( result.found )
//{
var p = new Vector3(position2, 0); // result.positionZ );
//check by MinDistanceBetweenObjects
if (surfaceGroup == null || !pointContainerFindFreePlace.Contains(new Sphere(p, surfaceGroup.MinDistanceBetweenObjects)))
{
//found place to create
position = p;
break;
}
//}
}
counter++;
}
if (position != null)
{
var objPosition = position.Value + new Vector3(0, 0, positionZ);
var objRotation = rotation;
var objScale = scale;
var surfaceElement = surfaceGroup.GetElement(elementIndex);
var surfaceElementMesh = surfaceElement as Component_SurfaceElement_Mesh;
if (surfaceElementMesh != null)
{
var meshInSpace = scene.CreateComponent <Component_MeshInSpace>(enabled: false);
meshInSpace.Transform = new Transform(objPosition, objRotation, objScale);
//!!!!так копировать?
meshInSpace.Mesh = surfaceElementMesh.Mesh;
if (meshInSpace.Mesh.Value == null)
{
meshInSpace.Mesh = ResourceUtility.MeshInvalid;
}
//!!!!так копировать?
if (surfaceElementMesh.ReplaceMaterial.ReferenceSpecified)
{
meshInSpace.ReplaceMaterial = surfaceElementMesh.ReplaceMaterial;
}
meshInSpace.Enabled = true;
}
//add to point container
pointContainerFindFreePlace.Add(ref objPosition);
}
}
}
Component_GroupOfObjects.Object[] UpdateOutputDefault(Component_Surface surface, Component_GroupOfObjects groupOfObjects)
{
var pointPositions = GetPointPositions();
var pointPositions2 = pointPositions.Select(a => a.ToVector2()).ToArray();
var pointBounds = GetPointPositionsBounds();
var lines = new List <Line2>();
for (int n = 0; n < pointPositions2.Length; n++)
{
lines.Add(new Line2(pointPositions2[n], pointPositions2[(n + 1) % pointPositions2.Length]));
}
var random = new Random(RandomSeed.Value);
double GetFadeFactor(Vector2 point)
{
var minLength = double.MaxValue;
foreach (var line in lines)
{
var d = Math.Min((line.Start - point).Length(), (line.End - point).Length());
var projected = MathAlgorithms.ProjectPointToLine(line.Start, line.End, point);
Rectangle b = new Rectangle(line.Start);
b.Add(line.End);
if (b.Contains(projected))
{
var d2 = (projected - point).Length();
if (d2 < d)
{
d = d2;
}
}
if (d < minLength)
{
minLength = d;
}
}
if (minLength >= FadeLength)
{
return(1);
}
return(minLength / FadeLength);
}
if (pointPositions.Length >= 3)
{
//calculate object count
int count;
{
double polygonArea;
{
var points = new List <Vector2>(pointPositions2);
points.Add(points[0]);
polygonArea = Math.Abs(points.Take(points.Count - 1)
.Select((p, i) => (points[i + 1].X - p.X) * (points[i + 1].Y + p.Y))
.Sum() / 2);
}
//!!!!среднее от всех групп
double minDistanceBetweenObjects;
{
var groups = surface.GetComponents <Component_SurfaceGroupOfElements>();
if (groups.Length != 0)
{
minDistanceBetweenObjects = 0;
foreach (var group in groups)
{
minDistanceBetweenObjects += group.MinDistanceBetweenObjects;
}
minDistanceBetweenObjects /= groups.Length;
}
else
{
minDistanceBetweenObjects = 1;
}
}
double radius = minDistanceBetweenObjects / 2;
double objectArea = Math.PI * radius * radius;
if (objectArea < 0.1)
{
objectArea = 0.1;
}
double maxCount = polygonArea / objectArea;
count = (int)(Strength * (double)maxCount);
count = Math.Max(count, 0);
}
var data = new List <Component_GroupOfObjects.Object>(count);
var scene = groupOfObjects.FindParent <Component_Scene>();
if (scene != null)
{
var destinationCachedBaseObjects = groupOfObjects.GetBaseObjects();
var pointContainerFindFreePlace = new PointContainer3D(pointBounds, 100);
for (int n = 0; n < count; n++)
{
surface.GetRandomVariation(new Component_Surface.GetRandomVariationOptions(), random, out var groupIndex, out var elementIndex, out var positionZ, out var rotation, out var scale);
var surfaceGroup = surface.GetGroup(groupIndex);
Vector3?position = null;
int counter = 0;
while (counter < 20)
{
Vector2 position2 = Vector2.Zero;
position2.X = MathEx.Lerp(pointBounds.Minimum.X, pointBounds.Maximum.X, random.NextFloat());
position2.Y = MathEx.Lerp(pointBounds.Minimum.Y, pointBounds.Maximum.Y, random.NextFloat());
if (MathAlgorithms.IsPointInPolygon(pointPositions2, position2))
{
double factor = 1;
if (FadeLength > 0)
{
factor = GetFadeFactor(position2);
}
if (factor >= 1 || random.NextDouble() <= factor)
{
var result = Component_Scene_Utility.CalculateObjectPositionZ(scene, groupOfObjects, pointBounds.GetCenter().Z, position2, destinationCachedBaseObjects);
if (result.found || destinationCachedBaseObjects.Count == 0)
{
var p = new Vector3(position2, destinationCachedBaseObjects.Count != 0 ? result.positionZ : pointBounds.GetCenter().Z);
//check by MinDistanceBetweenObjects
if (surfaceGroup == null || !pointContainerFindFreePlace.Contains(new Sphere(p, surfaceGroup.MinDistanceBetweenObjects)))
{
//found place to create
position = p;
break;
}
}
}
}
counter++;
}
if (position != null)
{
var obj = new Component_GroupOfObjects.Object();
obj.Element = 0; // (ushort)element.Index.Value;
obj.VariationGroup = groupIndex;
obj.VariationElement = elementIndex;
obj.Flags = Component_GroupOfObjects.Object.FlagsEnum.Enabled | Component_GroupOfObjects.Object.FlagsEnum.Visible;
obj.Position = position.Value + new Vector3(0, 0, positionZ);
obj.Rotation = rotation;
obj.Scale = scale;
obj.Color = ColorValue.One;
data.Add(obj);
//add to point container
pointContainerFindFreePlace.Add(ref obj.Position);
}
}
}
return(data.ToArray());
}
else
{
return(new Component_GroupOfObjects.Object[0]);
}
}