bool
Duckmatic::on_duck_changed(const synfig::Point &value,const synfigapp::ValueDesc& value_desc)
{
- if (ValueNode_BLineCalcWidth::Handle bline_width = ValueNode_BLineCalcWidth::Handle::cast_dynamic(value_desc.get_value_node()))
- {
- Real old_width((*bline_width)(get_time()).get(Real()));
- Real new_width(value.mag());
- int scale_index(bline_width->get_link_index_from_name("scale"));
- Real scale((*(bline_width->get_link(scale_index)))(get_time()).get(Real()));
- return canvas_interface->change_value(synfigapp::ValueDesc(bline_width,scale_index), new_width * scale / old_width);
- }
-
- if (ValueNode_BLineCalcVertex::Handle bline_vertex = ValueNode_BLineCalcVertex::Handle::cast_dynamic(value_desc.get_value_node()))
- {
- ValueNode_BLine::Handle bline = ValueNode_BLine::Handle::cast_dynamic(bline_vertex->get_link("bline"));
- Real radius = 0.0;
- if (((*(bline_vertex->get_link("loop")))(get_time()).get(bool()))){
- Real amount_old((*(bline_vertex->get_link("amount")))(get_time()).get(Real()));
- Real amount_new = synfig::find_closest_point((*bline)(get_time()), value, radius, bline->get_loop());
- Real difference = fmod( fmod(amount_new - amount_old, 1.0) + 1.0 , 1.0);
- //fmod is called twice to avoid negative values
- if (difference > 0.5) difference=difference-1.0;
- return canvas_interface->change_value(synfigapp::ValueDesc(bline_vertex,bline_vertex->get_link_index_from_name("amount")), amount_old+difference);
-
- } else {
- Real amount = synfig::find_closest_point((*bline)(get_time()), value, radius, bline->get_loop());
- return canvas_interface->change_value(synfigapp::ValueDesc(bline_vertex,bline_vertex->get_link_index_from_name("amount")), amount);
- }
- }
-
- if (ValueNode_BLineCalcTangent::Handle bline_tangent = ValueNode_BLineCalcTangent::Handle::cast_dynamic(value_desc.get_value_node()))
- {
- switch(value_desc.get_value_type())
- {
- case ValueBase::TYPE_REAL:
- {
- Real old_length = (*bline_tangent)(get_time()).get(Real());
- Real new_length = value.mag();
- int scale_index(bline_tangent->get_link_index_from_name("scale"));
- int fixed_length_index(bline_tangent->get_link_index_from_name("fixed_length"));
- Real scale((*(bline_tangent->get_link(scale_index)))(get_time()).get(Real()));
- bool fixed_length((*(bline_tangent->get_link(fixed_length_index)))(get_time()).get(bool()));
- if (fixed_length)
- return canvas_interface->change_value(synfigapp::ValueDesc(bline_tangent,scale_index), new_length);
- if (old_length == 0)
- return true;
- return canvas_interface->change_value(synfigapp::ValueDesc(bline_tangent,scale_index), new_length * scale / old_length);
- }
-
- case ValueBase::TYPE_ANGLE:
- assert(0); // doesn't happen?
- break;
-
- case ValueBase::TYPE_VECTOR:
- {
- Vector old_tangent = (*bline_tangent)(get_time()).get(Vector());
- Angle old_angle = old_tangent.angle();
- Real old_length = old_tangent.mag();
- Angle new_angle = value.angle();
- Real new_length = value.mag();
- int offset_index(bline_tangent->get_link_index_from_name("offset"));
- int scale_index(bline_tangent->get_link_index_from_name("scale"));
- int fixed_length_index(bline_tangent->get_link_index_from_name("fixed_length"));
- Angle old_offset((*(bline_tangent->get_link(offset_index)))(get_time()).get(Angle()));
- Real scale((*(bline_tangent->get_link(scale_index)))(get_time()).get(Real()));
- bool fixed_length((*(bline_tangent->get_link(fixed_length_index)))(get_time()).get(bool()));
- if (fixed_length)
- {
- if (!(canvas_interface->change_value(synfigapp::ValueDesc(bline_tangent,scale_index), new_length)))
- return false;
- }
- else if (old_length != 0 && !(canvas_interface->change_value(synfigapp::ValueDesc(bline_tangent,scale_index), new_length * scale / old_length)))
- return false;
- return canvas_interface->change_value(synfigapp::ValueDesc(bline_tangent,offset_index), old_offset + new_angle - old_angle);
- }
- default:
- break;
- }
- }
-
- if (ValueNode_Scale::Handle scale_value_node = ValueNode_Scale::Handle::cast_dynamic(value_desc.get_value_node()))
- {
- int link_index(scale_value_node->get_link_index_from_name("link"));
- if(scale_value_node->is_invertible(get_time()))
- return canvas_interface->change_value(
- synfigapp::ValueDesc(scale_value_node,link_index),
- scale_value_node->get_inverse(get_time(), value)
- );
- else
- return false;
- }
-
- if (ValueNode_Range::Handle range_value_node = ValueNode_Range::Handle::cast_dynamic(value_desc.get_value_node()))
- {
- int link_index(range_value_node->get_link_index_from_name("link"));
- return canvas_interface->change_value(
- synfigapp::ValueDesc(range_value_node,link_index),
- range_value_node->get_inverse(get_time(), value)
- );
- }
-
switch(value_desc.get_value_type())
{
case ValueBase::TYPE_REAL:
bool
Duckmatic::on_duck_angle_changed(const synfig::Angle &rotation,const synfigapp::ValueDesc& value_desc)
{
- if (ValueNode_BLineCalcTangent::Handle bline_tangent = ValueNode_BLineCalcTangent::Handle::cast_dynamic(value_desc.get_value_node()))
- {
- int offset_index(bline_tangent->get_link_index_from_name("offset"));
- Angle old_offset((*(bline_tangent->get_link(offset_index)))(get_time()).get(Angle()));
- return canvas_interface->change_value(synfigapp::ValueDesc(bline_tangent,offset_index), old_offset + rotation);
- }
-
- if (ValueNode_Scale::Handle scale_value_node = ValueNode_Scale::Handle::cast_dynamic(value_desc.get_value_node()))
- {
- int link_index(scale_value_node->get_link_index_from_name("link"));
- if(scale_value_node->is_invertible(get_time()))
- return canvas_interface->change_value(
- synfigapp::ValueDesc(scale_value_node,link_index),
- scale_value_node->get_inverse(get_time(), rotation)
- );
- else
- return false;
-
- }
- if (ValueNode_Range::Handle range_value_node = ValueNode_Range::Handle::cast_dynamic(value_desc.get_value_node()))
- {
- int link_index(range_value_node->get_link_index_from_name("link"));
- return canvas_interface->change_value(
- synfigapp::ValueDesc(range_value_node,link_index),
- range_value_node->get_inverse(get_time(), rotation)
- );
- }
// \todo will this really always be the case?
assert(value_desc.get_value_type() == ValueBase::TYPE_ANGLE);
return canvas_interface->change_value(value_desc, value_desc.get_value(get_time()).get(Angle()) + rotation);
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