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a6db9688cd
The new zoom implemented for ContinuousFunction is now factorized inside Function to benefit the Sequence class. The same things is done to code added to Graph::GraphController, which is moved into FunctionGraphController. This removes the reimplementation of several methods, most notably computeYRange, as the implementation for function is general enough to work on sequences. Change-Id: I9b8211354064f46c3fa3dde3191dcb39d627a1d2
79 lines
2.8 KiB
C++
79 lines
2.8 KiB
C++
#include "curve_view_range.h"
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#include <cmath>
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#include <ion.h>
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#include <poincare/preferences.h>
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#include <algorithm>
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using namespace Shared;
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using namespace Poincare;
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namespace Sequence {
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CurveViewRange::CurveViewRange(InteractiveCurveViewRangeDelegate * delegate) :
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InteractiveCurveViewRange(delegate)
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{
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MemoizedCurveViewRange::protectedSetXMin(-k_displayLeftMarginRatio * xMax(), k_lowerMaxFloat, k_upperMaxFloat);
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}
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void CurveViewRange::roundAbscissa() {
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int roundedXMean = std::round(xCenter());
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float halfScreenWidth = ((float)Ion::Display::Width)/2.0f;
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float newXMin = roundedXMean - halfScreenWidth;
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float newXMax = roundedXMean + halfScreenWidth - 1.0f;
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float interestingXMin = m_delegate->interestingXMin();
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if (newXMin < interestingXMin) {
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newXMin = interestingXMin - k_displayLeftMarginRatio * (float)Ion::Display::Width;
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newXMax = newXMin + (float)Ion::Display::Width;
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}
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if (std::isnan(newXMin) || std::isnan(newXMax)) {
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return;
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}
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m_xRange.setMax(newXMax, k_lowerMaxFloat, k_upperMaxFloat);
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setXMin(newXMin);
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}
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void CurveViewRange::normalize() {
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float xMean = xCenter();
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float yMean = yCenter();
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const float unit = std::max(xGridUnit(), yGridUnit());
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// Compute the X
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const float newXHalfRange = NormalizedXHalfRange(unit);
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float newXMin = xMean - newXHalfRange;
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float newXMax = xMean + newXHalfRange;
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float interestingXMin = m_delegate->interestingXMin();
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if (newXMin < interestingXMin) {
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newXMin = interestingXMin -k_displayLeftMarginRatio*2.0f*newXHalfRange;
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newXMax = newXMin + 2.0f*newXHalfRange;
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}
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if (!std::isnan(newXMin) && !std::isnan(newXMax)) {
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m_xRange.setMax(newXMax, k_lowerMaxFloat, k_upperMaxFloat);
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MemoizedCurveViewRange::protectedSetXMin(newXMin, k_lowerMaxFloat, k_upperMaxFloat);
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}
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// Compute the Y
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m_yAuto = false;
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const float newYHalfRange = NormalizedYHalfRange(unit);
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float newYMin = yMean - newYHalfRange;
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float newYMax = clipped(yMean + newYHalfRange, true);
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if (!std::isnan(newYMin) && !std::isnan(newYMax)) {
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m_yRange.setMax(newYMax, k_lowerMaxFloat, k_upperMaxFloat);
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MemoizedCurveViewRange::protectedSetYMin(newYMin, k_lowerMaxFloat, k_upperMaxFloat);
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}
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}
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void CurveViewRange::setTrigonometric() {
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float interestingXMin = m_delegate->interestingXMin();
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float interestingXRange = Preferences::sharedPreferences()->angleUnit() == Preferences::AngleUnit::Degree ? 1200.0f : 21.0f;
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m_xRange.setMax(interestingXMin + interestingXRange, k_lowerMaxFloat, k_upperMaxFloat);
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MemoizedCurveViewRange::protectedSetXMin(interestingXMin - k_displayLeftMarginRatio * interestingXRange, k_lowerMaxFloat, k_upperMaxFloat);
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m_yAuto = false;
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constexpr float y = 1.6f;
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m_yRange.setMax(y, k_lowerMaxFloat, k_upperMaxFloat);
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MemoizedCurveViewRange::protectedSetYMin(-y, k_lowerMaxFloat, k_upperMaxFloat);
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}
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}
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