mirror of
https://github.com/UpsilonNumworks/Upsilon.git
synced 2026-01-19 00:37:25 +01:00
937979503a
When a function that had previously been cached is deactivated, its
cache can be used by another function. When the function is reactivated,
if it tries to reuse its previous cache, it will be filled with values
from another function, and will not be cleared. By detaching the cache
of a function that becomes inactive, we ensure that the next time this
function is cached, the chache will be cleared.
e.g. Define to functions f(x)=x, g(x)=-x, draw them both.
Deactivate f, the redraw the graph
Reactivate f, the draw again
102 lines
3.2 KiB
C++
102 lines
3.2 KiB
C++
#include "function.h"
|
|
#include "interactive_curve_view_range.h"
|
|
#include "range_1D.h"
|
|
#include "poincare_helpers.h"
|
|
#include "poincare/src/parsing/parser.h"
|
|
#include <poincare/zoom.h>
|
|
#include <ion/display.h>
|
|
#include <ion/unicode/utf8_decoder.h>
|
|
#include <algorithm>
|
|
#include <assert.h>
|
|
#include <cmath>
|
|
#include <float.h>
|
|
#include <string.h>
|
|
|
|
using namespace Poincare;
|
|
|
|
namespace Shared {
|
|
|
|
Function::NameNotCompliantError Function::BaseNameCompliant(const char * baseName) {
|
|
assert(baseName[0] != 0);
|
|
|
|
UTF8Decoder decoder(baseName);
|
|
CodePoint c = decoder.nextCodePoint();
|
|
if (c.isDecimalDigit()) {
|
|
return NameNotCompliantError::NameCannotStartWithNumber;
|
|
}
|
|
|
|
while (c != UCodePointNull) {
|
|
// FIXME '_' should be accepted but not as first character
|
|
// TODO Factor this piece of code with similar one in the Parser
|
|
if (!(c.isDecimalDigit() || c.isLatinLetter()) || c == '_') {
|
|
return NameNotCompliantError::CharacterNotAllowed;
|
|
}
|
|
c = decoder.nextCodePoint();
|
|
}
|
|
|
|
if (Parser::IsReservedName(baseName, strlen(baseName))) {
|
|
return NameNotCompliantError::ReservedName;
|
|
}
|
|
return NameNotCompliantError::None;
|
|
}
|
|
|
|
bool Function::isActive() const {
|
|
return recordData()->isActive();
|
|
}
|
|
|
|
KDColor Function::color() const {
|
|
return recordData()->color();
|
|
}
|
|
|
|
void Function::setActive(bool active) {
|
|
recordData()->setActive(active);
|
|
if (!active) {
|
|
functionBecameInactive();
|
|
}
|
|
}
|
|
|
|
int Function::printValue(double cursorT, double cursorX, double cursorY, char * buffer, int bufferSize, int precision, Poincare::Context * context) {
|
|
return PoincareHelpers::ConvertFloatToText<double>(cursorY, buffer, bufferSize, precision);
|
|
}
|
|
|
|
int Function::name(char * buffer, size_t bufferSize) {
|
|
return SymbolAbstract::TruncateExtension(buffer, fullName(), bufferSize);
|
|
}
|
|
|
|
int Function::nameWithArgument(char * buffer, size_t bufferSize) {
|
|
int funcNameSize = name(buffer, bufferSize);
|
|
assert(funcNameSize > 0);
|
|
size_t result = funcNameSize;
|
|
assert(result <= bufferSize);
|
|
buffer[result++] = '(';
|
|
assert(result <= bufferSize);
|
|
assert(UTF8Decoder::CharSizeOfCodePoint(symbol()) <= 2);
|
|
result += UTF8Decoder::CodePointToChars(symbol(), buffer+result, bufferSize-result);
|
|
assert(result <= bufferSize);
|
|
result += strlcpy(buffer+result, ")", bufferSize-result);
|
|
return result;
|
|
}
|
|
|
|
Function::RecordDataBuffer * Function::recordData() const {
|
|
assert(!isNull());
|
|
Ion::Storage::Record::Data d = value();
|
|
return reinterpret_cast<RecordDataBuffer *>(const_cast<void *>(d.buffer));
|
|
}
|
|
|
|
void Function::protectedFullRangeForDisplay(float tMin, float tMax, float tStep, float * min, float * max, Poincare::Context * context, bool xRange) const {
|
|
Poincare::Zoom::ValueAtAbscissa evaluation;
|
|
if (xRange) {
|
|
evaluation = [](float x, Poincare::Context * context, const void * auxiliary) {
|
|
return static_cast<const Function *>(auxiliary)->evaluateXYAtParameter(x, context).x1();
|
|
};
|
|
} else {
|
|
evaluation = [](float x, Poincare::Context * context, const void * auxiliary) {
|
|
return static_cast<const Function *>(auxiliary)->evaluateXYAtParameter(x, context).x2();
|
|
};
|
|
}
|
|
|
|
Poincare::Zoom::FullRange(evaluation, tMin, tMax, tStep, min, max, context, this);
|
|
}
|
|
|
|
}
|