UpsilonNumworks/Upsilon
1
0
Fork 0
mirror of https://github.com/UpsilonNumworks/Upsilon.git synced 2026-01-20 01:08:15 +01:00
Code Issues Packages Projects Releases Wiki Activity

[poincare] Function expression

Browse Source
This commit is contained in:
Léa Saviot
2018-09-25 11:45:05 +02:00
committed by Émilie Feral
parent 3bbb8b39d1
commit 522f5e781e
9 changed files with 123 additions and 9 deletions
Download Patch File Download Diff File Expand all files Collapse all files

11
apps/graph/graph/intersection_graph_controller.cpp
View File

@@ -3,7 +3,6 @@
#include "../../shared/poincare_helpers.h"
using namespace Shared;
using namespace Poincare;
namespace Graph {
@@ -21,7 +20,7 @@ const char * IntersectionGraphController::title() {
void IntersectionGraphController::reloadBannerView() {
m_bannerView->setNumberOfSubviews(2);
reloadBannerViewForCursorOnFunction(m_cursor, m_function, 'x');
size_t bufferSize = FunctionBannerDelegate::k_maxNumberOfCharacters+PrintFloat::bufferSizeForFloatsWithPrecision(Constant::LargeNumberOfSignificantDigits);
size_t bufferSize = FunctionBannerDelegate::k_maxNumberOfCharacters+Poincare::PrintFloat::bufferSizeForFloatsWithPrecision(Constant::LargeNumberOfSignificantDigits);
char buffer[bufferSize];
const char * space = " ";
int spaceLength = strlen(space);
@@ -31,18 +30,18 @@ void IntersectionGraphController::reloadBannerView() {
numberOfChar += strlcpy(buffer, legend, bufferSize);
buffer[0] = m_function->name()[0];
buffer[5] = m_intersectedFunction->name()[0];
numberOfChar += PoincareHelpers::ConvertFloatToText<double>(m_cursor->y(), buffer+numberOfChar, PrintFloat::bufferSizeForFloatsWithPrecision(Constant::MediumNumberOfSignificantDigits), Constant::MediumNumberOfSignificantDigits);
numberOfChar += PoincareHelpers::ConvertFloatToText<double>(m_cursor->y(), buffer+numberOfChar, Poincare::PrintFloat::bufferSizeForFloatsWithPrecision(Constant::MediumNumberOfSignificantDigits), Constant::MediumNumberOfSignificantDigits);
strlcpy(buffer+numberOfChar, space, bufferSize - numberOfChar);
buffer[FunctionBannerDelegate::k_maxDigitLegendLength+legendLength] = 0;
bannerView()->setLegendAtIndex(buffer, 1);
}
Expression::Coordinate2D IntersectionGraphController::computeNewPointOfInterest(double start, double step, double max, Context * context) {
Expression::Coordinate2D result = {.abscissa = NAN, .value = NAN};
Poincare::Expression::Coordinate2D IntersectionGraphController::computeNewPointOfInterest(double start, double step, double max, Poincare::Context * context) {
Poincare::Expression::Coordinate2D result = {.abscissa = NAN, .value = NAN};
for (int i = 0; i < m_functionStore->numberOfActiveFunctions(); i++) {
Function * f = m_functionStore->activeFunctionAtIndex(i);
if (f != m_function) {
Expression::Coordinate2D intersection = m_function->nextIntersectionFrom(start, step, max, context, f);
Poincare::Expression::Coordinate2D intersection = m_function->nextIntersectionFrom(start, step, max, context, f);
if ((std::isnan(result.abscissa) || std::fabs(intersection.abscissa-start) < std::fabs(result.abscissa-start)) && !std::isnan(intersection.abscissa)) {
m_intersectedFunction = f;
result = (std::isnan(result.abscissa) || std::fabs(intersection.abscissa-start) < std::fabs(result.abscissa-start)) ? intersection : result;