private void DragGBSplineLeftDerivation(MouseEventArgs e)
{
var yCursorPosition = CursorPositionY(e);
_selectedEllipse.SetValue(Canvas.TopProperty, yCursorPosition);
var degree = _selectedGlobalBSpline.Degree;
var yCursorPositionInWA = TransformCoordinates.PlotAreaToWorldAreaY(yCursorPosition + H_DIV_2, _plotArea, _worldArea);
var xCursorPositionInWA = _selectedGlobalBSpline.Knots[degree] - SplineDrawer.DERIVATIVE_AUX_KNOT_DISTANCE;
var xCursorPosition = TransformCoordinates.WorldAreaToPlotAreaX(xCursorPositionInWA, _plotArea, _worldArea);
_selectedGlobalBSpline.LeftDerivation = MathOperations.DirectionOfLinearFunction(xCursorPositionInWA, yCursorPositionInWA, _selectedGlobalBSpline.Knots[degree], _selectedGlobalBSpline.FunctionValues[0]);
_dragInfoLabel.WriteAndSetCoordinates(_selectedGlobalBSpline.LeftDerivation, xCursorPositionInWA, yCursorPositionInWA, xCursorPosition + AVOID_CURSOR_X, yCursorPosition + H_DIV_2);
_dragInfoLabel.Visibility = Visibility.Visible;
_canvasUtilities.RefreshGlobalBSplineInCanvas(_selectedGlobalBSpline, canvas1, _engine);
}
private void DragCSplineLeftDerivation(MouseEventArgs e)
{
var cursorPositionY = CursorPositionY(e);
_selectedEllipse.SetValue(Canvas.TopProperty, cursorPositionY);
var yCursorPositionInWA = TransformCoordinates.PlotAreaToWorldAreaY(cursorPositionY + H_DIV_2, _plotArea, _worldArea);
var xCursorPositionInWA = _selectedClampedSpline.Knots[0] - SplineDrawer.DERIVATIVE_AUX_KNOT_DISTANCE;
var xCursorPosition = TransformCoordinates.WorldAreaToPlotAreaX(xCursorPositionInWA, _plotArea, _worldArea);
_selectedClampedSpline.Derivations[0] = MathOperations.DirectionOfLinearFunction(xCursorPositionInWA, yCursorPositionInWA, _selectedClampedSpline.Knots[0], _selectedClampedSpline.ControlPoints[0]);
_dragInfoLabel.WriteAndSetCoordinates(_selectedClampedSpline.Derivations[0], xCursorPositionInWA, yCursorPositionInWA, xCursorPosition + AVOID_CURSOR_X, cursorPositionY + H_DIV_2);
_dragInfoLabel.Visibility = Visibility.Visible;
_canvasUtilities.RefreshClampedSplineInCanvas(_selectedClampedSpline, canvas1, _engine);
// }
}
private void DragHSplineDerivation(MouseEventArgs e)
{
var yCursorPosition = CursorPositionY(e);
_selectedEllipse.SetValue(Canvas.TopProperty, yCursorPosition);
var yCursorPositionInWA = TransformCoordinates.PlotAreaToWorldAreaY(yCursorPosition, _plotArea, _worldArea);
var xCursorPositionInWA = _selectedHermiteSpline.Knots[_changedPointIndex] - SplineDrawer.DERIVATIVE_AUX_KNOT_DISTANCE;
_selectedHermiteSpline.Derivations[_changedPointIndex] =
MathOperations.DirectionOfLinearFunction(xCursorPositionInWA, yCursorPositionInWA, _selectedHermiteSpline.Knots[_changedPointIndex], _selectedHermiteSpline.ControlPoints[_changedPointIndex]);
var selectedKnotPositionInPA = TransformCoordinates.WorldAreaToPlotAreaX(_selectedHermiteSpline.Knots[_changedPointIndex], _plotArea, _worldArea);
_dragInfoLabel.WriteAndSetCoordinates(_changedPointIndex, _selectedHermiteSpline.Derivations[_changedPointIndex], xCursorPositionInWA, yCursorPositionInWA, selectedKnotPositionInPA + AVOID_CURSOR_X, yCursorPosition + H_DIV_2);
_dragInfoLabel.Visibility = Visibility.Visible;
_canvasUtilities.RefreshHermiteSplineInCanvas(_selectedHermiteSpline, canvas1, _engine);
}