Initial zoom for displaying curves is computed according to the
following rules :
- For polar and parametric curves, the algorithm has not changed.
Vertical and horizontal ranges are chosen in order to display the
full curve with orthonormal graduations.
- For cartesian curves, the horizontal range is chosen in order to
display all points of interest (roots, extrema, asymptotes...).
The vertical range is fitted to be able to display those points, but
also cuts out points outside of the function's order of magnitude.
Change-Id: Idf8233fc2e6586b85d34c4da152c83e75513d85c
Method InteractiveCurveViewRange::panToMakePointVisible now moves the
range of a whole number of pixels when panning horizontally. This allows
the cache of cartesian functions not to be invalidated.
Change-Id: Idb9904fef134dd13458e1f2287b0fe5145e8aec7
This is unfortunately required in several cases:
- Sometimes when we use either float and double (this should be changed)
- Because KDCoordinate is not an int, so any arithmemtic promotes it to
an int
- Because we mix pointer differences and ints
When setting the axes then putting on the orthnormalization, 2 * (max of
the two axes units) is put to 1 cm instead of doing 2 units = 1cm. This
roughly keeps the configuration of the window.
The resolution() method is useful to get a horizontal step equivalent to
the width of a pixel. A higher sampling ratio (or resolution) had been
introduced in the following commit.
[apps] In curve view, avoid white vertical lines in integral curves due to pixel rounding
It was a pure virtual method implemented in derived classes
Shared::FunctionGraphController,
Regression::GraphController.
InteractiveCurveViewRange does not need anymore to hold CurveViewCursor
* m_cursor.
It was implemented by the Graph and Sequence GraphController derived
classes and was used
1) in FunctionGraphController::viewWillAppear to set the cursorView
specific to each derived class,
2) in FunctionGraphController::cursor/displayBottomMarginRatio()
methods.
Instead
1) the viewWillAppear method of each derived classes sets its
cursorView itself
2) one may already get the cursorView through curveView().
