private void OnAttributeChanged(object sender, AttributeEventArgs e)
{
if (e.AttributeInfo.Equivalent(Schema.gameObjectType.pivotAttribute))
{// Update translation to keep object pinned when moving pivot
Matrix4F L0 = m_transformable.Transform;
Matrix4F L1 = TransformUtils.CalcTransform(
m_transformable.Translation,
m_transformable.Rotation,
m_transformable.Scale,
m_transformable.Pivot);
Vec3F deltaTranslation = L0.Translation - L1.Translation;
m_transformable.Translation = m_transformable.Translation + deltaTranslation;
}
if (IsTransformAttribute(e.AttributeInfo))
{
ComputeTransform();
}
}
/// <summary>
/// Performs custom actions on NodeSet events.
/// Called after successfully attaching to internal DOM object.</summary>
protected override void OnNodeSet()
{
base.OnNodeSet();
// Initialize scale to (1, 1, 1) if missing
DomNode.SetAttributeIfDefault(Schema.nodeType.scaleAttribute, new Vec3F(1, 1, 1));
m_rotation = DomNode.GetChild(Schema.nodeType.rotEulChild);
m_rotationAxis = DomNode.GetChild(Schema.nodeType.rotAxisEulChild);
Transform = TransformUtils.CalcTransform(this);
Box boxValue = DomNodeUtil.GetBox(DomNode, Schema.nodeType.boundingBoxAttribute);
if (boxValue.IsEmpty)
{
m_boundingBox = new Cached <Box>(CalculateBoundingBox); // don't set value and force to compute
}
else
{
m_boundingBox = new Cached <Box>(CalculateBoundingBox, boxValue); // non-default value found, use it
}
}
public override void OnDragging(ViewControl vc, Point scrPt)
{
if (m_hitRegion == HitRegion.None || m_activeOp == null || m_activeOp.NodeList.Count == 0)
{
return;
}
Matrix4F view = vc.Camera.ViewMatrix;
// compute world * view
Matrix4F wv = new Matrix4F();
wv.Mul(HitMatrix, view);
// create ray in view space.
Ray3F rayV = vc.GetRay(scrPt, vc.Camera.ProjectionMatrix);
Vec3F xAxis = wv.XAxis;
Vec3F yAxis = wv.YAxis;
Vec3F zAxis = wv.ZAxis;
Vec3F origin = wv.Translation;
m_scale = new Vec3F(1, 1, 1);
float scale = 1;
float a1, a2;
switch (m_hitRegion)
{
case HitRegion.XAxis:
case HitRegion.NegXAxis:
{
a1 = Math.Abs(Vec3F.Dot(HitRayV.Direction, yAxis));
a2 = Math.Abs(Vec3F.Dot(HitRayV.Direction, zAxis));
Vec3F axis = (a1 > a2 ? yAxis : zAxis);
Vec3F p0 = HitRayV.IntersectPlane(axis, -Vec3F.Dot(axis, origin));
Vec3F p1 = rayV.IntersectPlane(axis, -Vec3F.Dot(axis, origin));
float dragAmount = Vec3F.Dot((p1 - p0), xAxis);
if (m_hitRegion == HitRegion.NegXAxis)
{
dragAmount *= -1;
}
m_scale.X = 1.0f + dragAmount / m_hitScale;
scale = m_scale.X;
}
break;
case HitRegion.YAxis:
case HitRegion.NegYAxis:
{
a1 = Math.Abs(Vec3F.Dot(HitRayV.Direction, zAxis));
a2 = Math.Abs(Vec3F.Dot(HitRayV.Direction, xAxis));
Vec3F axis = (a1 > a2 ? zAxis : xAxis);
Vec3F p0 = HitRayV.IntersectPlane(axis, -Vec3F.Dot(axis, origin));
Vec3F p1 = rayV.IntersectPlane(axis, -Vec3F.Dot(axis, origin));
float dragAmount = Vec3F.Dot((p1 - p0), yAxis);
if (m_hitRegion == HitRegion.NegYAxis)
{
dragAmount *= -1;
}
m_scale.Y = 1.0f + dragAmount / m_hitScale;
scale = m_scale.Y;
}
break;
case HitRegion.ZAxis:
case HitRegion.NegZAxis:
{
a1 = Math.Abs(Vec3F.Dot(HitRayV.Direction, xAxis));
a2 = Math.Abs(Vec3F.Dot(HitRayV.Direction, yAxis));
Vec3F axis = (a1 > a2 ? xAxis : yAxis);
Vec3F p0 = HitRayV.IntersectPlane(axis, -Vec3F.Dot(axis, origin));
Vec3F p1 = rayV.IntersectPlane(axis, -Vec3F.Dot(axis, origin));
float dragAmount = Vec3F.Dot((p1 - p0), zAxis);
if (m_hitRegion == HitRegion.NegZAxis)
{
dragAmount *= -1;
}
m_scale.Z = 1.0f + dragAmount / m_hitScale;
scale = m_scale.Z;
}
break;
default:
throw new ArgumentOutOfRangeException();
}
if (m_isUniformScaling)
{
m_scale = new Vec3F(scale, scale, scale);
}
// scale
for (int i = 0; i < m_activeOp.NodeList.Count; i++)
{
ITransformable node = m_activeOp.NodeList[i];
node.Scale = Vec3F.Mul(m_originalScales[i], m_scale);
Matrix4F mtrx = TransformUtils.CalcTransform(
Vec3F.ZeroVector,
node.Rotation,
node.Scale,
m_pivotOffset[i]);
node.Translation = m_originalTranslations[i] + mtrx.Translation;
}
}
public override void OnBeginDrag(ViewControl vc, Point scrPt)
{
if (m_hitRegion == HitRegion.None)
{
return;
}
m_activeOp = null;
var op = new ManipulatorActiveOperation(
"Extend", DesignView.Context.As <ISelectionContext>(),
(ITransformable node) => (node.TransformationType & TransformationTypes.Scale) != 0,
false);
// to compute offset use bounding box in local space.
Vec3F offset = Vec3F.ZeroVector;// 0.5f; // use bounding box in local space
switch (m_hitRegion)
{
case HitRegion.XAxis:
case HitRegion.YAxis:
case HitRegion.ZAxis:
offset = new Vec3F(-1, -1, -1);
break;
case HitRegion.NegXAxis:
case HitRegion.NegYAxis:
case HitRegion.NegZAxis:
offset = new Vec3F(1, 1, 1);
break;
default:
break;
}
m_isUniformScaling = false;
m_originalScales = new Vec3F[op.NodeList.Count];
m_originalTranslations = new Vec3F[op.NodeList.Count];
m_pivotOffset = new Vec3F[op.NodeList.Count];
int k = 0;
foreach (ITransformable node in op.NodeList)
{
// if any of the selected nodes are marked as "UniformScale", then the
// entire operation must be a uniform scale operaion
if ((node.TransformationType & TransformationTypes.UniformScale) == TransformationTypes.UniformScale)
{
m_isUniformScaling = true;
}
IBoundable boundable = node.As <IBoundable>();
Vec3F pivot = Vec3F.Mul(boundable.LocalBoundingBox.Radius, offset);
m_pivotOffset[k] = pivot;
m_originalScales[k] = node.Scale;
Matrix4F mtrx = TransformUtils.CalcTransform(
Vec3F.ZeroVector,
node.Rotation,
node.Scale,
pivot
);
m_originalTranslations[k] = node.Translation - mtrx.Translation;
k++;
}
m_activeOp = op;
}
public override void OnBeginDrag()
{
if (m_hitRegion == HitRegion.None)
{
return;
}
var selection = DesignView.Context.As <ISelectionContext>().Selection;
var transactionContext = DesignView.Context.As <ITransactionContext>();
NodeList.Clear();
m_isUniformScaling = false;
IEnumerable <DomNode> rootDomNodes = DomNode.GetRoots(selection.AsIEnumerable <DomNode>());
foreach (DomNode node in rootDomNodes)
{
ITransformable transNode = node.As <ITransformable>();
if (transNode == null || (transNode.TransformationType & TransformationTypes.Scale) == 0)
{
continue;
}
IVisible vn = node.As <IVisible>();
if (!vn.Visible)
{
continue;
}
ILockable lockable = node.As <ILockable>();
if (lockable.IsLocked)
{
continue;
}
// force uniform scaling if any node requires it
if ((transNode.TransformationType & TransformationTypes.UniformScale) == TransformationTypes.UniformScale)
{
m_isUniformScaling = true;
}
NodeList.Add(transNode);
IManipulatorNotify notifier = transNode.As <IManipulatorNotify>();
if (notifier != null)
{
notifier.OnBeginDrag();
}
}
// to compute offset use bounding box in local space.
Vec3F offset = Vec3F.ZeroVector;// 0.5f; // use bounding box in local space
switch (m_hitRegion)
{
case HitRegion.XAxis:
case HitRegion.YAxis:
case HitRegion.ZAxis:
offset = new Vec3F(-1, -1, -1);
break;
case HitRegion.NegXAxis:
case HitRegion.NegYAxis:
case HitRegion.NegZAxis:
offset = new Vec3F(1, 1, 1);
break;
default:
break;
}
m_originalScales = new Vec3F[NodeList.Count];
m_originalTranslations = new Vec3F[NodeList.Count];
m_pivotOffset = new Vec3F[NodeList.Count];
int k = 0;
foreach (ITransformable node in NodeList)
{
IBoundable boundable = node.As <IBoundable>();
Vec3F pivot = Vec3F.Mul(boundable.LocalBoundingBox.Radius, offset);
m_pivotOffset[k] = pivot;
m_originalScales[k] = node.Scale;
Matrix4F mtrx = TransformUtils.CalcTransform(
Vec3F.ZeroVector,
node.Rotation,
node.Scale,
pivot
);
m_originalTranslations[k] = node.Translation - mtrx.Translation;
k++;
}
if (NodeList.Count > 0)
{
transactionContext.Begin("Extend".Localize());
}
}
public virtual void UpdateTransform()
{
Matrix4F xform = TransformUtils.CalcTransform(this);
SetAttribute(Schema.gameObjectType.transformAttribute, xform.ToArray());
}
public virtual void UpdateTransform()
{
this.SetMatrix4x4(TransformableST.transformAttribute, TransformUtils.CalcTransform(this));
}
/// <summary>
/// Computes transformation matrix from transformation related atrributes.</summary>
public void ComputeTransform()
{
Matrix4F xform = TransformUtils.CalcTransform(m_transformable);
SetAttribute(Schema.gameObjectType.transformAttribute, xform.ToArray());
}