The annotation class is different from the v5 Annotation2 class. I am trying to get my head around the new classes including the dimension classes… seems difficult.
Some example files showing the optimal way of reading / creating annotations and dimensions with v6, would be really helpful. What happens when OpenNURBS reads previous version of the annotation/dimensions.
Thanks in advance.
Hi @rajeev,
The annotation classes have been overhauled in Rhino 6.
http://developer.rhino3d.com/guides/cpp/annotation-objects/
OpenNURBS will correctly convert annotations, written in V5, to the new annotation objects available in V6.
Reading annotations should not be too difficult. Here is a starting point you can use:
ONX_Model model;...
...
ONX_ModelComponentIterator it(model, ON_ModelComponent::Type::ModelGeometry);
const ON_ModelComponent* model_component = nullptr;
for (model_component = it.FirstComponent(); nullptr != model_component; model_component = it.NextComponent())
{
const ON_Annotation* annotation = ON_Annotation::Cast(model_component);
if (nullptr != annotation)
{
const ON_ModelComponentReference& model_component_ref = model.DimensionStyleFromId(annotation->DimensionStyleId());
const ON_DimStyle* dim_style = ON_DimStyle::Cast(model_component_ref.ModelComponent());
if (nullptr != dim_style)
{
switch (annotation->Type())
{
// Text
case ON::AnnotationType::Text:
{
const ON_Text* text = ON_Text::Cast(annotation);
if (nullptr != text)
{
// TODO...
}
}
break;
// Linear dimensions
case ON::AnnotationType::Aligned:
{
const ON_DimLinear* dim_linear = ON_DimLinear::Cast(annotation);
if (nullptr != dim_linear)
{
// TODO...
}
}
break;
// Etc...
}
}
}
}
If you want assistance porting the creation of V5 annotations to V6, just forward me your old code.
Thanks,
– Dale
Hi @dale,
Thank you so much. Please find the sample code snippet below. I am guessing that annotation and dimensions are geometry objects and should be added to the ONX_Model by AddManagedModelGeometryComponent method?
I am not able to figure out the replacement for SetPoint methods in the v5 dimension/annotation class
############## old code below
ON_LinearDimension2* dim = new ON_LinearDimension2();
double x1, y1, z1, x2, y2, z2, off;
//get the above variables from external api in CM
x1 *= 10; y1 *= 10; z1 *= 10;
x2 *= 10; y2 *= 10; z2 *= 10;
off *= 10;
ON_3dPoint start = ON_3dPoint(x1,y1,z1);
ON_3dPoint end = ON_3dPoint(x2,y2,z2);
ON_3dPoint z3 = ON_3dPoint(x2 + 10, y2 + 10, z2 + 10);
if (start.x == end.x && start.z == end.z)
{
z3.x = x2+10; z3.y = y2; z3.z = z2;
}
else if (start.y == end.y && start.z == end.z)
{
z3.x = x2; z3.y = y2+10; z3.z = z2;
}
else if (start.x == end.x && start.y == end.y)
{
z3.x = x2; z3.y = y2; z3.z = z2+10;
}
const double dist = start.DistanceTo(end);
ON_Plane pln = ON_Plane(start,end,z3);
dim->SetPlane(pln);
dim->SetPoint(0, ON_2dPoint(0,0));
dim->SetPoint(1, ON_2dPoint(0,off));
dim->SetPoint(2, ON_2dPoint(dist,0));
dim->SetPoint(3, ON_2dPoint(dist,off));
dim->SetType(ON::dtDimAligned);
dim->SetTextValue(L"<>");
ON_TextLog errlog;
if(dim->IsValid(&errlog))
{
ONX_Model_Object &mo = model.m_object_table.AppendNew();
mo.m_object = dim;
mo.m_bDeleteObject = true;
mo.m_attributes.m_layer_index = from_external_api;
dim = 0;
}
delete dim;
############ end code
Hi @rajeev,
I have not tested this. But this should work.
static bool Internal_AddDimLinear(
ONX_Model& model,
ON_3dPoint point0,
ON_3dPoint point1,
ON_3dPoint line_point,
ON_3dVector plane_normal,
const ON_DimStyle* dim_style,
const ON_3dmObjectAttributes* attributes
)
{
if (nullptr == dim_style)
{
const ON_ModelComponentReference& dim_style_ref = model.CurrentDimensionStyle();
dim_style = ON_DimStyle::Cast(dim_style_ref.ModelComponent());
}
if (nullptr == dim_style)
return false;
const ON_UUID parent_id
= dim_style->ParentIdIsNotNil()
? dim_style->ParentId()
: dim_style->Id();
const ON_ModelComponentReference& parent_dim_style_ref = model.DimensionStyleFromId(parent_id);
const ON_DimStyle* parent_dim_style = ON_DimStyle::Cast(parent_dim_style_ref.ModelComponent());
if (nullptr == parent_dim_style)
return false;
ON_DimLinear dim_linear;
if (nullptr == ON_DimLinear::CreateAligned(point0, point1, line_point, plane_normal, parent_dim_style->Id(), &dim_linear))
return false;
if (dim_style->ContentHash() != parent_dim_style->ContentHash())
{
ON_DimStyle* override_style = new ON_DimStyle(*dim_style);
override_style->SetParentId(parent_dim_style->Id());
override_style->ClearId();
override_style->ClearName();
override_style->OverrideFieldsWithDifferentValues(*dim_style, *parent_dim_style);
if (override_style->HasOverrides())
dim_linear.SetOverrideDimensionStyle(override_style);
else
delete override_style;
}
if (nullptr == attributes)
attributes = &ON_3dmObjectAttributes::DefaultAttributes;
// 'model' will copy input and manage this memory
const ON_ModelComponentReference& geometry_ref = model.AddModelGeometryComponent(&dim_linear, attributes);
return !geometry_ref.IsEmpty();
}
– Dale
Thank you dale. It was really helpful in understanding the new concepts.
Hi @dale,
How is the Diameter Dimension implemented. I am not able to find a DimDiameter class…
Should the ON_DimRadial() class be used instead? Or is it ON_LinearDimension().
Thanks