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"SnapTo" feature enabled in the curve editor + non periodic handling of the flat curve editor.

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Here is the new modifiew key behaviour :

    * CONTROL while dragging a point :
      slow down 20x the point move (i.e. 1pixel of cursor move move the control point by 0.05px)

    * SHIFT while dragging a point :
      snap the point to the following elements, on a "use nearest solution" method :
          o Diagonal curve editor :
                + top bound,
                + bottom bound,
                + identity (diagonal) line,
                + same Y than previous point,
                + same Y than next point,
                + line made by the previous and next point ; this will help to create linear parts in the curve more easilly
          o Flat curve editor (when moving a point) :
                + top bound,
                + bottom bound,
                + identity (horizontal) line,
                + same Y than previous point (or last point if you move the first point),
                + same Y than next point (or first point if you move the last point
          o Flat curve editor (when moving a tangential handle) :
                + 0.0, 0.35, 0.5, 1.0 values
                  0.35 is the default handles value and does create an smooth "diagonal" transition between points.
This commit is contained in:
Hombre
2011-04-18 15:40:22 +02:00
parent a6370306f7
commit 3de100ae5e
13 changed files with 258 additions and 80 deletions
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14
rtgui/mycurve.cc
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@@ -31,6 +31,7 @@ MyCurve::MyCurve () : listener(NULL) {
snapTo = ST_None;
colorProvider = NULL;
sized = RS_Pending;
snapToElmt = -100;
set_extension_events(Gdk::EXTENSION_EVENTS_ALL);
add_events(Gdk::EXPOSURE_MASK | Gdk::POINTER_MOTION_MASK | Gdk::POINTER_MOTION_HINT_MASK | Gdk::ENTER_NOTIFY_MASK | Gdk::LEAVE_NOTIFY_MASK | Gdk::BUTTON_PRESS_MASK | Gdk::BUTTON_RELEASE_MASK | Gdk::BUTTON1_MOTION_MASK);
@@ -54,3 +55,16 @@ void MyCurve::notifyListener () {
if (listener)
listener->curveChanged ();
}
bool MyCurve::snapCoordinate(double testedVal, double realVal) {
double distY = realVal - testedVal;
if (distY < 0.) distY = -distY;
if (distY < snapToMinDist) {
snapToMinDist = distY;
snapToVal = testedVal;
return true;
}
return false;
}