Add ValueNode "Vector Length" for calculating the length of a vector.

[synfig.git] / synfig-core / trunk / src / synfig / valuenode_bline.cpp

diff --git a/synfig-core/trunk/src/synfig/valuenode_bline.cpp b/synfig-core/trunk/src/synfig/valuenode_bline.cpp
index 87e8702..366c301 100644 (file)
--- a/synfig-core/trunk/src/synfig/valuenode_bline.cpp
+++ b/synfig-core/trunk/src/synfig/valuenode_bline.cpp
@@ -1,11 +1,12 @@
 /* === S Y N F I G ========================================================= */
 /*!    \file valuenode_bline.cpp
-**     \brief Template File
+**     \brief Implementation of the "BLine" valuenode conversion.
 **
 **     $Id$
 **
 **     \legal
 **     Copyright (c) 2002-2005 Robert B. Quattlebaum Jr., Adrian Bentley
+**     Copyright (c) 2007, 2008 Chris Moore
 **
 **     This package is free software; you can redistribute it and/or
 **     modify it under the terms of the GNU General Public License as
@@ -52,6 +53,8 @@ using namespace synfig;
 
 /* === M A C R O S ========================================================= */
 
+#define EPSILON 0.0000001f
+
 /* === G L O B A L S ======================================================= */
 
 /* === P R O C E D U R E S ================================================= */
@@ -279,7 +282,6 @@ ValueNode_BLine::create(const ValueBase &value)
                }
        }
 
-
        return value_node;
 }
 
@@ -288,7 +290,6 @@ ValueNode_BLine::create_list_entry(int index, Time time, Real origin)
 {
        ValueNode_BLine::ListEntry ret;
 
-
        synfig::BLinePoint prev,next;
 
        int prev_i,next_i;
@@ -305,7 +306,7 @@ ValueNode_BLine::create_list_entry(int index, Time time, Real origin)
                next_i=index;
        prev_i=find_prev_valid_entry(index,time);
 
-       synfig::info("index=%d, next_i=%d, prev_i=%d",index,next_i,prev_i);
+       //synfig::info("index=%d, next_i=%d, prev_i=%d",index,next_i,prev_i);
 
        next=(*list[next_i].value_node)(time);
        prev=(*list[prev_i].value_node)(time);
@@ -350,7 +351,7 @@ ValueNode_BLine::operator()(Time t)const
                assert(amount<=1.0f);
 
                // it's fully on
-               if(amount==1.0f)
+               if (amount > 1.0f - EPSILON)
                {
                        if(first_flag)
                        {
@@ -422,7 +423,7 @@ ValueNode_BLine::operator()(Time t)const
 
                        // Find "end" of dynamic group - ie. search forward along
                        // the bline from the current point until we find a point
-                       // which is more 'on'than the current one
+                       // which is more 'on' than the current one
                        end_iter=iter;
 //                     for(++end_iter;begin_iter!=list.end();++end_iter)
                        for(++end_iter;end_iter!=list.end();++end_iter)
@@ -569,7 +570,7 @@ ValueNode_BLine::operator()(Time t)const
                                        curr_coord_sys[0]=(begin_pos_at_current_time - end_pos_at_current_time).norm();
                                        curr_coord_sys[1]=curr_coord_sys[0].perp();
 
-                                       // Invert (transpose) the last of these matricies, since we use it for transform back
+                                       // Invert (transpose) the last of these matrices, since we use it for transform back
                                        swap(curr_coord_sys[0][1],curr_coord_sys[1][0]);
                                }