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()
{
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 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 OnDragging(ViewControl vc, Point scrPt)
{
if (m_hitRegion == HitRegion.None || 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;
//Vec3F pos;
m_scale = new Vec3F(1, 1, 1);
float scale = 1;
float a1, a2;
switch (m_hitRegion)
{
case HitRegion.XAxis:
{
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);
m_scale.X = 1.0f + dragAmount / m_hitScale;
scale = m_scale.X;
}
break;
case HitRegion.YAxis:
{
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);
m_scale.Y = 1.0f + dragAmount / m_hitScale;
scale = m_scale.Y;
}
break;
case HitRegion.ZAxis:
{
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);
m_scale.Z = 1.0f + dragAmount / m_hitScale;
scale = m_scale.Z;
}
break;
case HitRegion.FreeRect:
{
Vec3F axis = new Vec3F(0, 0, 1);
Vec3F p0 = HitRayV.IntersectPlane(axis, -origin.Z);
Vec3F p1 = rayV.IntersectPlane(axis, -origin.Z);
Vec3F dragVec = p1 - p0;
float dragAmount = 1.0f + dragVec.X / m_hitScale;
m_scale.X = dragAmount;
m_scale.Y = dragAmount;
m_scale.Z = dragAmount;
scale = m_scale.X;
}
break;
default:
throw new ArgumentOutOfRangeException();
}
if (m_isUniformScaling)
{
m_scale = new Vec3F(scale, scale, scale);
}
// scale
for (int i = 0; i < NodeList.Count; i++)
{
ITransformable transformable = NodeList[i];
transformable.Scale = Vec3F.Mul(m_originalValues[i], m_scale);
}
}
