mirror of
https://github.com/UpsilonNumworks/Upsilon.git
synced 2026-01-19 00:37:25 +01:00
54 lines
2.4 KiB
C++
54 lines
2.4 KiB
C++
#include "complex_graph_cell.h"
|
|
|
|
using namespace Shared;
|
|
using namespace Poincare;
|
|
|
|
namespace Calculation {
|
|
|
|
ComplexGraphView::ComplexGraphView(ComplexModel * complexModel) :
|
|
CurveView(complexModel),
|
|
m_complex(complexModel)
|
|
{
|
|
}
|
|
|
|
void ComplexGraphView::drawRect(KDContext * ctx, KDRect rect) const {
|
|
ctx->fillRect(rect, KDColorWhite);
|
|
float real = m_complex->real();
|
|
float imag = m_complex->imag();
|
|
/* Draw the partial ellipse indicating the angle theta
|
|
* - the ellipse parameters are a = real/2 and b = imag/2,
|
|
* - the ellipse equation is x^2/a^2 + y^2/b^2 = 1, so we draw the curve of
|
|
* equation y = imag/real*(real*real/4-x*x)
|
|
* - we draw the ellipse from the dot (xStart, yStart) chosen so that
|
|
* yStart = 0 which gives xStart = real/2 to the dot (xEnd, yEnd) chosen to
|
|
* be on the slope y = x*imag/real which gives xStart = real/(2*sqrt(2)). */
|
|
drawCurve(ctx, rect, real/(2.0f*std::sqrt(2.0f)), real/2.0f, real/100.0f, [](float t, void * model, void * context) {
|
|
ComplexModel * complexModel = (ComplexModel *)model;
|
|
float real = complexModel->real();
|
|
float imag = complexModel->imag();
|
|
return Poincare::Coordinate2D<float>(t, (imag/real)*std::sqrt(real*real/4.0f - t*t));
|
|
}, m_complex, nullptr, false, Palette::Blue, false);
|
|
// Draw the segment from the origin to the dot (real, imag) of equation y = x*imag/real
|
|
drawCartesianCurve(ctx, rect, 0, real, [](float t, void * model, void * context) {
|
|
ComplexModel * complexModel = (ComplexModel *)model;
|
|
return Poincare::Coordinate2D<float>(t, t*complexModel->imag()/complexModel->real());
|
|
}, m_complex, nullptr, Palette::Red, false);
|
|
drawAxes(ctx, rect);
|
|
drawDot(ctx, rect, real, imag, KDColorBlack);
|
|
//drawLabel(ctx, rect, Axis::Horizontal, real);
|
|
//drawLabel(ctx, rect, Axis::Vertical, imag);
|
|
//drawAxisLabel(ctx, rect, Axis::Horizontal, "Re", real > 0.0f);
|
|
//drawAxisLabel(ctx, rect, Axis::Vertical, "Im", imag > 0.0f);
|
|
char buffer[k_labelBufferMaxSize];
|
|
PrintFloat::ConvertFloatToText<float>(
|
|
std::arg(*m_complex),
|
|
buffer,
|
|
k_labelBufferMaxSize,
|
|
k_labelBufferMaxGlyphLength,
|
|
Poincare::Preferences::ShortNumberOfSignificantDigits,
|
|
Preferences::PrintFloatMode::Decimal);
|
|
ctx->drawString(buffer, KDPoint(floatToPixel(Axis::Horizontal, std::fabs(real)/2.0f)+KDFont::SmallFont->glyphSize().width(), floatToPixel(Axis::Vertical, 0.0f)-KDFont::SmallFont->glyphSize().height()), KDFont::SmallFont);
|
|
}
|
|
|
|
}
|