Bugs item #2342835, was opened at 2008-11-25 03:03
Message generated for change (Comment added) made by zelgadis_ksee
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Category: None
Group: None
Status: Open
Resolution: None
Priority: 5
Private: No
Submitted By: dooglus (dooglus)
Assigned to: Nobody/Anonymous (nobody)
Summary: dynamic waypoints only support linear interpolation
Initial Comment:
The attached file shows two circles both using the same waypoints but they move
differently.
The cyan one which behaves correctly has waypoints like this:
<waypoint time="0s" before="auto" after="auto"><vector><x>-3.0</x><y>
1.25</y></vector></waypoint>
The red one which doesn't has this:
<waypoint time="0s" use="a" before="auto" after="auto"/>
<vector id="a"><x>-3.0</x><y> 1.25</y></vector>
ie. if the waypoints use exported values then the TCB smoothing doesn't work.
----------------------------------------------------------------------
Comment By: Konstantin Dmitriev (zelgadis_ksee)
Date: 2012-12-26 04:16
Message:
This bugtracker is no longer active. The issue is moved to the new
bugtracker - http://synfig.org/issues/thebuggenie/synfig
----------------------------------------------------------------------
Comment By: dooglus (dooglus)
Date: 2008-11-25 03:42
Message:
synfig-core/trunk/src/synfig/valuenode_animated.cpp says:
// At the moment, the only type of non-constant
interpolation
// that we support is linear.
So that's why.
synfig-core/trunk/src/synfig/waypoint.cpp defines:
bool Waypoint::is_static()const {
return
static_cast<bool>(ValueNode_Const::Handle::cast_dynamic(value_node)) &&
value_node && !value_node->is_exported();
}
to determine whether to use static or dynamic interpolation. In this
example the value-node->is_exported() and so dynamic interpolation is used.
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