// For each brush
// 1D:
// Find surfaces that intersect with ray
// Find edges on that surface, if intersection is close enough to edge, find closest point on edge
static void FindSnapPointsAlongRay(GameObject[] selection, Vector3 worldRayStart, Vector3 worldRayDirection, List <SurfaceSnap> allSurfaceSnapEvents, List <EdgeSnap> allEdgeSnapEvents, List <VertexSnap> allVertexSnapEvents)
{
if (selection == null || selection.Length == 0)
{
return;
}
if (allSurfaceSnapEvents == null &&
allEdgeSnapEvents == null &&
allVertexSnapEvents == null)
{
return;
}
s_FoundIntersections.Clear();
if (ChiselSceneQuery.FindFirstWorldIntersection(s_FoundIntersections, worldRayStart - worldRayDirection, worldRayStart + worldRayDirection, filter: selection))
{
if (allSurfaceSnapEvents != null)
{
for (int i = 0; i < s_FoundIntersections.Count; i++)
{
var intersection = s_FoundIntersections[i];
allSurfaceSnapEvents.Add(new SurfaceSnap
{
brush = intersection.brushIntersection.brush,
surfaceIndex = intersection.brushIntersection.surfaceIndex,
intersection = intersection.worldPlaneIntersection,
normal = intersection.worldPlane.normal,
});
}
}
}
if (allEdgeSnapEvents == null && allVertexSnapEvents == null)
{
return;
}
foreach (var intersection in s_FoundIntersections)
{
var csgBrush = intersection.brushIntersection.brush;
var csgTree = intersection.brushIntersection.tree;
var brushMeshBlob = BrushMeshManager.GetBrushMeshBlob(csgBrush.BrushMesh);
if (!brushMeshBlob.IsCreated)
{
continue;
}
ref var brushMesh = ref brushMeshBlob.Value;
ref var polygons = ref brushMesh.polygons;
internal static GameObject PickNodeOrGameObject(Camera camera, Vector2 pickposition, int layers, ref GameObject[] ignore, ref GameObject[] filter, out ChiselModel model, out ChiselNode node, out CSGTreeBrushIntersection intersection)
{
TryNextSelection:
intersection = new CSGTreeBrushIntersection {
surfaceID = -1, brushUserID = -1
};
model = null;
node = null;
Material sharedMaterial;
var gameObject = PickModel(camera, pickposition, layers, ref ignore, ref filter, out model, out sharedMaterial);
if (object.Equals(gameObject, null))
{
return(null);
}
if (model)
{
int filterLayerParameter0 = (sharedMaterial) ? sharedMaterial.GetInstanceID() : 0;
{
var worldRay = camera.ScreenPointToRay(pickposition);
var worldRayStart = worldRay.origin;
var worldRayVector = (worldRay.direction * (camera.farClipPlane - camera.nearClipPlane));
var worldRayEnd = worldRayStart + worldRayVector;
CSGTreeBrushIntersection tempIntersection;
if (ChiselSceneQuery.FindFirstWorldIntersection(model, worldRayStart, worldRayEnd, filterLayerParameter0, layers, ignore, filter, out tempIntersection))
{
var clickedBrush = tempIntersection.brush;
node = CSGNodeHierarchyManager.FindCSGNodeByInstanceID(clickedBrush.UserID);
if (node)
{
if (ignore != null &&
ignore.Contains(node.gameObject))
{
node = null;
return(null);
}
intersection = tempIntersection;
return(node.gameObject);
}
else
{
node = null;
}
}
}
if (ignore == null)
{
return(null);
}
ArrayUtility.Add(ref ignore, gameObject);
goto TryNextSelection;
}
if (object.Equals(gameObject, null))
{
return(null);
}
if (ignore != null &&
ignore.Contains(gameObject))
{
return(null);
}
return(gameObject);
}
static GameObject PickNodeOrGameObject(Camera camera, Vector2 pickposition, int layers, ref GameObject[] ignore, ref GameObject[] filter, out ChiselModel model, out ChiselNode node, out ChiselIntersection intersection)
{
TryNextSelection:
intersection = ChiselIntersection.None;
node = null;
Material sharedMaterial;
var gameObject = PickModelOrGameObject(camera, pickposition, layers, ref ignore, ref filter, out model, out sharedMaterial);
if (object.Equals(gameObject, null))
{
return(null);
}
if (ChiselGeneratedComponentManager.IsValidModelToBeSelected(model))
{
int filterLayerParameter0 = (sharedMaterial) ? sharedMaterial.GetInstanceID() : 0;
{
var worldRay = camera.ScreenPointToRay(pickposition);
var worldRayStart = worldRay.origin;
var worldRayVector = (worldRay.direction * (camera.farClipPlane - camera.nearClipPlane));
var worldRayEnd = worldRayStart + worldRayVector;
if (ChiselSceneQuery.FindFirstWorldIntersection(model, worldRayStart, worldRayEnd, filterLayerParameter0, layers, ignore, filter, out var tempIntersection))
{
node = tempIntersection.node;
if (node)
{
if (ignore != null &&
ignore.Contains(node.gameObject))
{
node = null;
return(null);
}
intersection = tempIntersection;
return(node.gameObject);
}
else
{
node = null;
}
}
}
if (ignore == null)
{
return(null);
}
ArrayUtility.Add(ref ignore, gameObject);
goto TryNextSelection;
}
if (object.Equals(gameObject, null))
{
return(null);
}
if (ignore != null &&
ignore.Contains(gameObject))
{
return(null);
}
return(gameObject);
}
// For each brush
// 1D:
// Find surfaces that intersect with ray
// Find edges on that surface, if intersection is close enough to edge, find closest point on edge
static void FindSnapPointsAlongRay(GameObject[] selection, Vector3 worldRayStart, Vector3 worldRayDirection, List <SurfaceSnap> allSurfaceSnapEvents, List <EdgeSnap> allEdgeSnapEvents, List <VertexSnap> allVertexSnapEvents)
{
if (selection == null || selection.Length == 0)
{
return;
}
if (allSurfaceSnapEvents == null &&
allEdgeSnapEvents == null &&
allVertexSnapEvents == null)
{
return;
}
s_FoundIntersections.Clear();
if (ChiselSceneQuery.FindFirstWorldIntersection(s_FoundIntersections, worldRayStart - worldRayDirection, worldRayStart + worldRayDirection, filter: selection))
{
if (allSurfaceSnapEvents != null)
{
for (int i = 0; i < s_FoundIntersections.Count; i++)
{
var intersection = s_FoundIntersections[i];
allSurfaceSnapEvents.Add(new SurfaceSnap
{
brush = intersection.brushIntersection.brush,
surfaceIndex = intersection.brushIntersection.surfaceIndex,
intersection = intersection.worldPlaneIntersection,
normal = intersection.worldPlane.normal,
});
}
}
}
if (allEdgeSnapEvents == null && allVertexSnapEvents == null)
{
return;
}
foreach (var intersection in s_FoundIntersections)
{
var csgBrush = intersection.brushIntersection.brush;
var csgTree = intersection.brushIntersection.tree;
var brushMesh = BrushMeshManager.GetBrushMesh(csgBrush.BrushMesh);
var polygons = brushMesh.polygons;
var halfEdges = brushMesh.halfEdges;
var vertices = brushMesh.vertices;
var halfEdgePolygonIndices = brushMesh.halfEdgePolygonIndices;
var model = ChiselNodeHierarchyManager.FindChiselNodeByInstanceID(csgTree.UserID) as ChiselModel;
var worldToNode = csgBrush.TreeToNodeSpaceMatrix * model.hierarchyItem.WorldToLocalMatrix;
var nodeToWorld = model.hierarchyItem.LocalToWorldMatrix * csgBrush.NodeToTreeSpaceMatrix;
var brushRayStart = worldToNode.MultiplyPoint(worldRayStart);
var brushRayDirection = worldToNode.MultiplyVector(worldRayDirection).normalized;
var surfaceIndex = intersection.brushIntersection.surfaceIndex;
var polygon = polygons[surfaceIndex];
var firstEdge = polygon.firstEdge;
var lastEdge = firstEdge + polygon.edgeCount;
for (int e0 = lastEdge - 1, e1 = firstEdge; e1 < lastEdge; e0 = e1, e1++)
{
var i0 = halfEdges[e0].vertexIndex;
var i1 = halfEdges[e1].vertexIndex;
var v0 = vertices[i0];
var v1 = vertices[i1];
var result = ClosestPointsBetweenTwoLines(brushRayStart, brushRayDirection, v0, v1, out Vector3 A, out Vector3 B);
if (result == ClosestLineResult.None)
{
continue;
}
if (result == ClosestLineResult.Aligned)
{
// TODO: draw edge as being intersecting if we're on the edge right now
continue;
}
var dist = (A - B).magnitude;
if (dist > kEdgeDistanceEpsilon)
{
continue;
}
if (allVertexSnapEvents != null)
{
var vertDist = ((Vector3)v0 - B).magnitude;
if (vertDist < kVertexDistanceEpsilon)
{
allVertexSnapEvents.Add(new VertexSnap
{
brush = csgBrush,
surfaceIndex = surfaceIndex,
vertexIndex = i0,
intersection = nodeToWorld.MultiplyPoint(v0)
});
}
vertDist = ((Vector3)v1 - B).magnitude;
if (vertDist < kVertexDistanceEpsilon)
{
allVertexSnapEvents.Add(new VertexSnap
{
brush = csgBrush,
surfaceIndex = surfaceIndex,
vertexIndex = i1,
intersection = nodeToWorld.MultiplyPoint(v1)
});
}
}
if (allEdgeSnapEvents != null)
{
allEdgeSnapEvents.Add(new EdgeSnap
{
brush = csgBrush,
surfaceIndex0 = surfaceIndex,
surfaceIndex1 = halfEdgePolygonIndices[halfEdges[e1].twinIndex],
vertexIndex0 = i0,
vertexIndex1 = i1,
intersection = nodeToWorld.MultiplyPoint(B),
from = nodeToWorld.MultiplyPoint(v0),
to = nodeToWorld.MultiplyPoint(v1)
});
}
}
}
}
