//!!!!подобное для Brush режима
//public delegate void CalculateCreateObjectPositionUnderCursorEventDelegate( Component_ObjectInSpace objectInSpace, ref bool found, ref Vector3 position );
//public static event CalculateCreateObjectPositionUnderCursorEventDelegate CalculateCreateObjectPositionUnderCursorEvent;
//public class CalculateCreateObjectPositionByRayResult
//{
// public bool Found;
// public Vector3 Position;
// public Component_ObjectInSpace CollidedWith;
// public Vector3F Normal;
//}
public static (bool found, Vector3 position, Component_ObjectInSpace collidedWith) CalculateCreateObjectPositionByRay(Component_Scene scene, Component_ObjectInSpace objectInSpace, Ray ray, bool allowSnap)
{
//var viewport = ViewportControl.Viewport;
//Vector2 mouse;
//if( overrideMouse.HasValue )
// mouse = overrideMouse.Value;
//else
//{
// mouse = viewport.MousePosition;
// if( !new Rectangle( 0, 0, 1, 1 ).Contains( mouse ) )
// mouse = new Vector2( 0.5, 0.5 );
//}
//Ray ray;
//if( overrideRay.HasValue )
// ray = overrideRay.Value;
//else
// ray = viewport.CameraSettings.GetRayByScreenCoordinates( mouse );
//!!!!? clamp max distance
//ray.Direction = ray.Direction.GetNormalize() * 100;
//!!!!можно конвекс форму делать вместо бокса
Bounds localBounds = new Bounds();
if (objectInSpace != null)
{
//particle system specific
if (!(objectInSpace is Component_ParticleSystemInSpace))
{
localBounds = objectInSpace.SpaceBounds.CalculatedBoundingBox - objectInSpace.Transform.Value.Position;
}
//Light, Camera, Decal, Grid specific. use bounds without scaling
if (objectInSpace is Component_Light || objectInSpace is Component_Camera)
{
var bounds = new Bounds(objectInSpace.TransformV.Position);
bounds.Expand(0.5);
localBounds = bounds - objectInSpace.Transform.Value.Position;
}
else if (objectInSpace is Component_Decal || objectInSpace is Component_SoundSource || objectInSpace.GetType().Name == "Component_Grid")
{
var bounds = new Bounds(objectInSpace.TransformV.Position);
bounds.Expand(0.25);
localBounds = bounds - objectInSpace.Transform.Value.Position;
}
}
if (localBounds.GetSize().X < 0.001)
{
localBounds.Expand(new Vector3(0.001, 0, 0));
}
if (localBounds.GetSize().Y < 0.001)
{
localBounds.Expand(new Vector3(0, 0.001, 0));
}
if (localBounds.GetSize().Z < 0.001)
{
localBounds.Expand(new Vector3(0, 0, 0.001));
}
double resultMinScale = 1.01;
Component_ObjectInSpace resultMinScaleCollidedWith = null;
if (objectInSpace != null)
{
//when objectInSpace != null
Plane[] planes;
{
var b1 = localBounds + ray.Origin;
var b2 = b1 + ray.Direction;
var points = CollectionUtility.Merge(b1.ToPoints(), b2.ToPoints());
ConvexHullAlgorithm.Create(points, out planes);
}
var item = new Component_Scene.GetObjectsInSpaceItem(Component_Scene.GetObjectsInSpaceItem.CastTypeEnum.All, null, true, planes);
scene.GetObjectsInSpace(item);
foreach (var resultItem in item.Result)
{
if (objectInSpace != resultItem.Object && !resultItem.Object.GetAllParents(false).Contains(objectInSpace))
{
//mesh in space
if (resultItem.Object is Component_MeshInSpace meshInSpace)
{
Vector3[] verticesFull;
int[] indices;
{
var b1 = localBounds + ray.Origin;
var b2 = b1 + ray.Direction;
var points = CollectionUtility.Merge(b1.ToPoints(), b2.ToPoints());
ConvexHullAlgorithm.Create(points, out verticesFull, out indices);
}
if (meshInSpace._Intersects(verticesFull, indices))
{
double minScale = 1.01;
double currentScale = 0.5;
//!!!!?
const double threshold = 0.00001;
double step = 0.25;
while (step > threshold)
{
Vector3[] vertices = new Vector3[verticesFull.Length];
for (int n = 0; n < vertices.Length; n++)
{
vertices[n] = verticesFull[n] - ray.Direction + ray.Direction * currentScale;
}
//Vector3[] vertices;
//int[] indices;
//{
// var b1 = localBounds + ray.Origin;
// var b2 = b1 + ray.Direction * currentScale;
// var points = CollectionUtility.Merge( b1.ToPoints(), b2.ToPoints() );
// ConvexHullAlgorithm.Create( points, out vertices, out indices );
//}
bool intersects = meshInSpace._Intersects(vertices, indices);
if (!intersects)
{
minScale = currentScale;
}
if (intersects)
{
currentScale -= step;
}
else
{
currentScale += step;
}
step /= 2;
}
if (minScale <= 1 && minScale < resultMinScale)
{
resultMinScale = minScale;
resultMinScaleCollidedWith = meshInSpace;
}
}
}
//!!!!какие еще
}
}
}
else
{
//when objectInSpace == null
var item = new Component_Scene.GetObjectsInSpaceItem(Component_Scene.GetObjectsInSpaceItem.CastTypeEnum.All, null, true, ray);
scene.GetObjectsInSpace(item);
foreach (var resultItem in item.Result)
{
//mesh in space
if (resultItem.Object is Component_MeshInSpace meshInSpace)
{
if (meshInSpace.RayCast(ray, Component_Mesh.CompiledData.RayCastMode.Auto, out var scale, out var triangleIndex))
{
if (scale <= 1 && scale < resultMinScale)
{
resultMinScale = scale;
resultMinScaleCollidedWith = meshInSpace;
//if( triangleIndex != -1 )
//{
//}
}
}
}
//!!!!какие еще
}
}
bool found;
Vector3 pos;
if (resultMinScale <= 1)
{
found = true;
pos = ray.GetPointOnRay(resultMinScale);
}
else
{
found = false;
pos = ray.Origin + ray.Direction.GetNormalize() * Math.Max(localBounds.GetBoundingSphere().Radius, 1) * 20;
}
//snap for 2D mode
if (scene.Mode.Value == Component_Scene.ModeEnum._2D)
{
pos.Z = Math.Ceiling(pos.Z);
}
//snap
if (allowSnap)
{
double snap;
//if( Form.ModifierKeys.HasFlag( Keys.Control ) )
snap = ProjectSettings.Get.SceneEditorStepMovement;
//else
// snap = 0;
if (snap != 0)
{
Vector3 snapVec = new Vector3(snap, snap, snap);
pos += snapVec / 2;
pos /= snapVec;
pos = new Vector3I((int)pos.X, (int)pos.Y, (int)pos.Z).ToVector3();
pos *= snapVec;
}
}
//CalculateCreateObjectPositionUnderCursorEvent?.Invoke( objectInSpace, ref found, ref pos );
return(found, pos, resultMinScaleCollidedWith);
//objectToTransform.Transform = new Transform( pos, objectToTransform.Transform.Value.Rotation, objectToTransform.Transform.Value.Scale );
//}
//else
//{
// var localBounds = objectInSpace.SpaceBounds.CalculatedBoundingBox - objectInSpace.Transform.Value.Position;
// //disable object to disable collisions
// var disable = ContainsPhysicsBodies( objectInSpace );
// if( disable )
// objectInSpace.Enabled = false;
// //!!!!contact group
// PhysicsConvexSweepTestItem castItem = new PhysicsConvexSweepTestItem( Matrix4.FromTranslate( ray.Origin ),
// Matrix4.FromTranslate( ray.Origin + ray.Direction ), 1, -1, PhysicsConvexSweepTestItem.ModeEnum.OneClosest, localBounds );
// Scene.PhysicsConvexSweepTest( new PhysicsConvexSweepTestItem[] { castItem } );
// //restore disabled object
// if( disable )
// objectInSpace.Enabled = true;
// Vector3 pos;
// if( castItem.Result.Length != 0 )
// pos = castItem.Result[ 0 ].Position;
// else
// {
// pos = ray.Origin + ray.Direction.GetNormalize() * Math.Max( localBounds.GetBoundingSphere().Radius, 1 ) * 20;
// }
// objectInSpace.Transform = new Transform( pos, objectInSpace.Transform.Value.Rotation, objectInSpace.Transform.Value.Scale );
//}
}
/// <summary>
/// Constructs a vector with another given vector of <see cref="Vector3I"/> format.
/// </summary>
/// <param name="source">The source vector.</param>
public Vector3(Vector3I source)
{
X = source.X;
Y = source.Y;
Z = source.Z;
}
