protected override IList<object> Pick(MouseEventArgs e)
{
bool multiSelect = DragOverThreshold;
List<object> paths = new List<object>();
HitRecord[] hits;
if(multiSelect)
{// frustum pick
RectangleF rect = MakeRect(FirstMousePoint, CurrentMousePoint);
hits = GameEngine.FrustumPick(SurfaceId, Camera.ViewMatrix, Camera.ProjectionMatrix, rect);
}
else
{// ray pick
Ray3F rayW = GetWorldRay(CurrentMousePoint);
hits = GameEngine.RayPick(Camera.ViewMatrix, Camera.ProjectionMatrix, rayW, false);
}
// create unique list of hits
HashSet<ulong> instanceSet = new HashSet<ulong>();
List<HitRecord> uniqueHits = new List<HitRecord>();
// build 'path' objects for each hit record.
foreach (HitRecord hit in hits)
{
bool added = instanceSet.Add(hit.instanceId);
if (added) uniqueHits.Add(hit);
}
HitRecord firstHit = new HitRecord();
// build 'path' objects for each hit record.
foreach (HitRecord hit in uniqueHits)
{
NativeObjectAdapter nobj = GameEngine.GetAdapterFromId(hit.instanceId);
DomNode dom = nobj.DomNode;
object hitPath = Util.AdaptDomPath(dom);
object obj = DesignView.PickFilter.Filter(hitPath, e);
if (obj != null)
{
if (paths.Count == 0)
{
firstHit = hit;
}
var newPath = obj as AdaptablePath<object> ?? Util.AdaptDomPath((DomNode)obj);
paths.Add(newPath);
}
}
if (multiSelect == false && paths.Count > 0)
{
var path = paths[0];
ISelectionContext selection = DesignView.Context.As<ISelectionContext>();
ILinear linear = path.As<ILinear>();
if (linear != null
&& Control.ModifierKeys == System.Windows.Forms.Keys.Shift
&& selection.SelectionContains(path))
{
ITransactionContext trans = DesignView.Context.As<ITransactionContext>();
trans.DoTransaction(
delegate
{
linear.InsertPoint(firstHit.index, firstHit.hitPt.X, firstHit.hitPt.Y, firstHit.hitPt.Z);
}, "insert control point".Localize()
);
}
}
return paths;
}
public override void OnDragging(ViewControl vc, Point scrPt)
{
if (m_cancelDrag || m_hitRegion == HitRegion.None || NodeList.Count == 0)
{
return;
}
bool hitAxis = m_hitRegion == HitRegion.XAxis ||
m_hitRegion == HitRegion.YAxis ||
m_hitRegion == HitRegion.ZAxis;
Matrix4F view = vc.Camera.ViewMatrix;
Matrix4F proj = vc.Camera.ProjectionMatrix;
Matrix4F vp = view * proj;
// create ray in world space.
Ray3F rayW = vc.GetRay(scrPt, vp);
// create ray in view space.
Ray3F rayV = vc.GetRay(scrPt, proj);
Vec3F translate = m_translatorControl.OnDragging(rayV);
ISnapSettings snapSettings = (ISnapSettings)DesignView;
bool snapToGeom = Control.ModifierKeys == m_snapGeometryKey;
if (snapToGeom)
{
Vec3F manipPos = HitMatrix.Translation;
Vec3F manipMove;
if (hitAxis)
{
//Make rayw to point toward moving axis and starting
// from manipulator’s world position.
rayW.Direction = Vec3F.Normalize(translate);
rayW.Origin = manipPos;
manipMove = Vec3F.ZeroVector;
m_cancelDrag = true; //stop further snap-to's
}
else
{
manipMove = rayW.ProjectPoint(manipPos) - manipPos;
}
for (int i = 0; i < NodeList.Count; i++)
{
ITransformable node = NodeList[i];
Vec3F snapOffset = TransformUtils.CalcSnapFromOffset(node, snapSettings.SnapFrom);
Path <DomNode> path = new Path <DomNode>(Adapters.Cast <DomNode>(node).GetPath());
Matrix4F parentLocalToWorld = TransformUtils.CalcPathTransform(path, path.Count - 2);
Vec3F orgPosW;
parentLocalToWorld.Transform(m_originalValues[i], out orgPosW);
Matrix4F parentWorldToLocal = new Matrix4F();
parentWorldToLocal.Invert(parentLocalToWorld);
rayW.MoveToIncludePoint(orgPosW + snapOffset + manipMove);
HitRecord[] hits = GameEngine.RayPick(view, proj, rayW, true);
bool cansnap = false;
HitRecord target = new HitRecord();
if (hits.Length > 0)
{
// find hit record.
foreach (var hit in hits)
{
if (m_snapFilter.CanSnapTo(node, GameEngine.GetAdapterFromId(hit.instanceId)))
{
target = hit;
cansnap = true;
break;
}
}
}
if (cansnap)
{
Vec3F pos;
if (target.hasNearestVert && snapSettings.SnapVertex)
{
pos = target.nearestVertex;
}
else
{
pos = target.hitPt;
}
pos -= snapOffset;
parentWorldToLocal.Transform(ref pos);
Vec3F diff = pos - node.Transform.Translation;
node.Translation += diff;
bool rotateOnSnap = snapSettings.RotateOnSnap &&
target.hasNormal &&
(node.TransformationType & TransformationTypes.Rotation) != 0;
if (rotateOnSnap)
{
Vec3F localSurfaceNormal;
parentWorldToLocal.TransformNormal(target.normal, out localSurfaceNormal);
node.Rotation = TransformUtils.RotateToVector(
m_originalRotations[i],
localSurfaceNormal,
AxisSystemType.YIsUp);
}
}
}
}
else
{
IGrid grid = DesignView.Context.Cast <IGame>().Grid;
bool snapToGrid = Control.ModifierKeys == m_snapGridKey &&
grid.Visible &&
vc.Camera.ViewType == ViewTypes.Perspective;
float gridHeight = grid.Height;
// translate.
for (int i = 0; i < NodeList.Count; i++)
{
ITransformable node = NodeList[i];
Path <DomNode> path = new Path <DomNode>(Adapters.Cast <DomNode>(node).GetPath());
Matrix4F parentLocalToWorld = TransformUtils.CalcPathTransform(path, path.Count - 2);
Matrix4F parentWorldToLocal = new Matrix4F();
parentWorldToLocal.Invert(parentLocalToWorld);
Vec3F localTranslation;
parentWorldToLocal.TransformVector(translate, out localTranslation);
Vec3F trans = m_originalValues[i] + localTranslation;
if (snapToGrid)
{
if (grid.Snap)
{
trans = grid.SnapPoint(trans);
}
else
{
trans.Y = gridHeight;
}
}
node.Translation = trans;
}
}
}
/// <summary>
/// Projects the ghost</summary>
private void ProjectGhost(DomNode ghost,
Ray3F rayw,
HitRecord? hit)
{
ITransformable xformnode = ghost.Cast<ITransformable>();
IBoundable bnode = ghost.As<IBoundable>();
AABB box = bnode.BoundingBox;
Vec3F pt;
if (hit.HasValue && hit.Value.hasNormal)
{
Vec3F rad = box.Radius;
Vec3F norm = hit.Value.normal;
Vec3F absNorm = Vec3F.Abs(norm);
Vec3F offset = Vec3F.ZeroVector;
if (absNorm.X > absNorm.Y)
{
if (absNorm.X > absNorm.Z)
offset.X = norm.X > 0 ? rad.X : -rad.X;
else
offset.Z = norm.Z > 0 ? rad.Z : -rad.Z;
}
else
{
if (absNorm.Y > absNorm.Z)
offset.Y = norm.Y > 0 ? rad.Y : -rad.Y;
else
offset.Z = norm.Z > 0 ? rad.Z : -rad.Z;
}
Vec3F localCenter = box.Center - xformnode.Translation;
pt = hit.Value.hitPt + (offset - localCenter);
}
else
{
float offset = 6.0f * box.Radius.Length;
pt = rayw.Origin + offset * rayw.Direction;
}
if (ViewType == ViewTypes.Front)
pt.Z = 0.0f;
else if (ViewType == ViewTypes.Top)
pt.Y = 0.0f;
else if (ViewType == ViewTypes.Left)
pt.X = 0.0f;
xformnode.Translation = pt;
}
public static bool RayPick(Matrix4F viewxform, Matrix4F projxfrom, Ray3F rayW, bool skipSelected, out HitRecord hit)
{
HitRecord* nativeHits = null;
int count;
//bool skipSelected,
fixed (float* ptr1 = &viewxform.M11, ptr2 = &projxfrom.M11)
{
NativeRayPick(
ptr1,
ptr2,
&rayW,
skipSelected,
&nativeHits,
out count);
}
if(count > 0)
{
hit = *nativeHits;
}
else
{
hit = new HitRecord();
}
return count > 0;
}
protected override IList <object> Pick(MouseEventArgs e)
{
bool multiSelect = DragOverThreshold;
List <object> paths = new List <object>();
HitRecord[] hits;
if (multiSelect)
{// frustum pick
RectangleF rect = MakeRect(FirstMousePoint, CurrentMousePoint);
hits = GameEngine.FrustumPick(SurfaceId, Camera.ViewMatrix, Camera.ProjectionMatrix, rect);
}
else
{// ray pick
Ray3F rayW = GetWorldRay(CurrentMousePoint);
hits = GameEngine.RayPick(Camera.ViewMatrix, Camera.ProjectionMatrix, rayW, false);
}
// create unique list of hits
HashSet <ulong> instanceSet = new HashSet <ulong>();
List <HitRecord> uniqueHits = new List <HitRecord>();
// build 'path' objects for each hit record.
foreach (HitRecord hit in hits)
{
bool added = instanceSet.Add(hit.instanceId);
if (added)
{
uniqueHits.Add(hit);
}
}
HitRecord firstHit = new HitRecord();
// build 'path' objects for each hit record.
foreach (HitRecord hit in uniqueHits)
{
NativeObjectAdapter nobj = GameEngine.GetAdapterFromId(hit.instanceId);
DomNode dom = nobj.DomNode;
object hitPath = Util.AdaptDomPath(dom);
object obj = DesignView.PickFilter.Filter(hitPath, e);
if (obj != null)
{
if (paths.Count == 0)
{
firstHit = hit;
}
var newPath = obj as AdaptablePath <object> ?? Util.AdaptDomPath((DomNode)obj);
paths.Add(newPath);
}
}
if (multiSelect == false && paths.Count > 0)
{
var path = paths[0];
ISelectionContext selection = DesignView.Context.As <ISelectionContext>();
ILinear linear = path.As <ILinear>();
if (linear != null &&
Control.ModifierKeys == System.Windows.Forms.Keys.Shift &&
selection.SelectionContains(path))
{
ITransactionContext trans = DesignView.Context.As <ITransactionContext>();
trans.DoTransaction(
delegate
{
linear.InsertPoint(firstHit.index, firstHit.hitPt.X, firstHit.hitPt.Y, firstHit.hitPt.Z);
}, "insert control point".Localize()
);
}
}
return(paths);
}
public static bool RayPick(Matrix4F viewxform, Matrix4F projxfrom, Ray3F rayW, bool skipSelected, out HitRecord hit)
{
HitRecord *nativeHits = null;
int count;
//bool skipSelected,
fixed(float *ptr1 = &viewxform.M11, ptr2 = &projxfrom.M11)
{
NativeRayPick(
ptr1,
ptr2,
&rayW,
skipSelected,
&nativeHits,
out count);
}
if (count > 0)
{
hit = *nativeHits;
}
else
{
hit = new HitRecord();
}
return(count > 0);
}
public override void OnDragging(ViewControl vc, Point scrPt)
{
if (m_cancelDrag || m_hitRegion == HitRegion.None || NodeList.Count == 0)
return;
bool hitAxis = m_hitRegion == HitRegion.XAxis
|| m_hitRegion == HitRegion.YAxis
|| m_hitRegion == HitRegion.ZAxis;
Matrix4F view = vc.Camera.ViewMatrix;
Matrix4F proj = vc.Camera.ProjectionMatrix;
Matrix4F vp = view * proj;
// create ray in world space.
Ray3F rayW = vc.GetRay(scrPt, vp);
// create ray in view space.
Ray3F rayV = vc.GetRay(scrPt, proj);
Vec3F translate = m_translatorControl.OnDragging(rayV);
ISnapSettings snapSettings = (ISnapSettings)DesignView;
bool snapToGeom = Control.ModifierKeys == m_snapGeometryKey;
if (snapToGeom)
{
Vec3F manipPos = HitMatrix.Translation;
Vec3F manipMove;
if (hitAxis)
{
//Make rayw to point toward moving axis and starting
// from manipulator’s world position.
rayW.Direction = Vec3F.Normalize(translate);
rayW.Origin = manipPos;
manipMove = Vec3F.ZeroVector;
m_cancelDrag = true; //stop further snap-to's
}
else
{
manipMove = rayW.ProjectPoint(manipPos) - manipPos;
}
for (int i = 0; i < NodeList.Count; i++)
{
ITransformable node = NodeList[i];
Vec3F snapOffset = TransformUtils.CalcSnapFromOffset(node, snapSettings.SnapFrom);
Path<DomNode> path = new Path<DomNode>(Adapters.Cast<DomNode>(node).GetPath());
Matrix4F parentLocalToWorld = TransformUtils.CalcPathTransform(path, path.Count - 2);
Vec3F orgPosW;
parentLocalToWorld.Transform(m_originalValues[i], out orgPosW);
Matrix4F parentWorldToLocal = new Matrix4F();
parentWorldToLocal.Invert(parentLocalToWorld);
rayW.MoveToIncludePoint(orgPosW + snapOffset + manipMove);
HitRecord[] hits = GameEngine.RayPick(view, proj, rayW, true);
bool cansnap = false;
HitRecord target = new HitRecord();
if (hits.Length > 0)
{
// find hit record.
foreach (var hit in hits)
{
if (m_snapFilter.CanSnapTo(node, GameEngine.GetAdapterFromId(hit.instanceId)))
{
target = hit;
cansnap = true;
break;
}
}
}
if (cansnap)
{
Vec3F pos;
if (target.hasNearestVert && snapSettings.SnapVertex)
{
pos = target.nearestVertex;
}
else
{
pos = target.hitPt;
}
pos -= snapOffset;
parentWorldToLocal.Transform(ref pos);
Vec3F diff = pos - node.Transform.Translation;
node.Translation += diff;
bool rotateOnSnap = snapSettings.RotateOnSnap
&& target.hasNormal
&& (node.TransformationType & TransformationTypes.Rotation) != 0;
if (rotateOnSnap)
{
Vec3F localSurfaceNormal;
parentWorldToLocal.TransformNormal(target.normal, out localSurfaceNormal);
node.Rotation = TransformUtils.RotateToVector(
m_originalRotations[i],
localSurfaceNormal,
AxisSystemType.YIsUp);
}
}
}
}
else
{
IGrid grid = DesignView.Context.Cast<IGame>().Grid;
bool snapToGrid = Control.ModifierKeys == m_snapGridKey
&& grid.Visible
&& vc.Camera.ViewType == ViewTypes.Perspective;
float gridHeight = grid.Height;
// translate.
for (int i = 0; i < NodeList.Count; i++)
{
ITransformable node = NodeList[i];
Path<DomNode> path = new Path<DomNode>(Adapters.Cast<DomNode>(node).GetPath());
Matrix4F parentLocalToWorld = TransformUtils.CalcPathTransform(path, path.Count - 2);
Matrix4F parentWorldToLocal = new Matrix4F();
parentWorldToLocal.Invert(parentLocalToWorld);
Vec3F localTranslation;
parentWorldToLocal.TransformVector(translate, out localTranslation);
Vec3F trans = m_originalValues[i] + localTranslation;
if(snapToGrid)
{
if(grid.Snap)
trans = grid.SnapPoint(trans);
else
trans.Y = gridHeight;
}
node.Translation = trans;
}
}
}