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app: add gimp_canvas_item_transform_distance() and transform_distance_square()

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to allow items to measure distances, exactly like the identical
GimpDrawTool API.
This commit is contained in:
Michael Natterer
2017-06-10 21:55:40 +02:00
parent 53a84bc6ea
commit a4d2acac38
2 changed files with 69 additions and 0 deletions
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12
app/display/gimpcanvasitem.h
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@ -113,6 +113,18 @@ void gimp_canvas_item_transform_xy_f (GimpCanvasItem *item,
gdouble y,
gdouble *tx,
gdouble *ty);
gdouble gimp_canvas_item_transform_distance
(GimpCanvasItem *item,
gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2);
gdouble gimp_canvas_item_transform_distance_square
(GimpCanvasItem *item,
gdouble x1,
gdouble y1,
gdouble x2,
gdouble y2);
/* protected */