mirror of
https://github.com/UpsilonNumworks/Upsilon.git
synced 2026-01-19 00:37:25 +01:00
93 lines
3.5 KiB
C++
93 lines
3.5 KiB
C++
#ifndef SHARED_FUNCTION_H
|
|
#define SHARED_FUNCTION_H
|
|
|
|
#include <poincare/function.h>
|
|
#include <poincare/symbol.h>
|
|
#include <escher/i18n.h>
|
|
#include "expression_model_handle.h"
|
|
|
|
#if __EMSCRIPTEN__
|
|
#include <emscripten.h>
|
|
#endif
|
|
|
|
namespace Shared {
|
|
|
|
class Function : public ExpressionModelHandle {
|
|
public:
|
|
enum class NameNotCompliantError {
|
|
None = 0,
|
|
CharacterNotAllowed,
|
|
NameCannotStartWithNumber,
|
|
ReservedName
|
|
};
|
|
static NameNotCompliantError BaseNameCompliant(const char * baseName);
|
|
|
|
/* Possible arguments: n, x, t, θ
|
|
* The CodePoint θ is two char long. */
|
|
constexpr static int k_parenthesedArgumentCodePointLength = 3;
|
|
constexpr static int k_parenthesedThetaArgumentByteLength = 4;
|
|
constexpr static int k_parenthesedXNTArgumentByteLength = 3;
|
|
constexpr static int k_maxNameWithArgumentSize = Poincare::SymbolAbstract::k_maxNameSize + k_parenthesedThetaArgumentByteLength; /* Function name and null-terminating char + "(θ)" */;
|
|
|
|
// Constructors
|
|
Function(Ion::Storage::Record record) : ExpressionModelHandle(record){}
|
|
|
|
// Properties
|
|
bool isActive() const;
|
|
KDColor color() const;
|
|
void setActive(bool active);
|
|
|
|
// Definition Interval
|
|
virtual bool shouldClipTRangeToXRange() const { return true; } // Returns true if the function will not be displayed if t is outside x range.
|
|
virtual float tMin() const { return NAN; }
|
|
virtual float tMax() const { return NAN; }
|
|
virtual float rangeStep() const { return NAN; }
|
|
|
|
// Name
|
|
int name(char * buffer, size_t bufferSize);
|
|
int nameWithArgument(char * buffer, size_t bufferSize);
|
|
virtual int printValue(double cursorT, double cursorX, double cursorY, char * buffer, int bufferSize, int precision, Poincare::Context * context);
|
|
virtual I18n::Message parameterMessageName() const = 0;
|
|
|
|
// Evaluation
|
|
virtual Poincare::Coordinate2D<float> evaluateXYAtParameter(float t, Poincare::Context * context) const = 0;
|
|
virtual Poincare::Coordinate2D<double> evaluateXYAtParameter(double t, Poincare::Context * context) const = 0;
|
|
virtual Poincare::Expression sumBetweenBounds(double start, double end, Poincare::Context * context) const = 0;
|
|
protected:
|
|
/* RecordDataBuffer is the layout of the data buffer of Record
|
|
* representing a Function. We want to avoid padding which would:
|
|
* - increase the size of the storage file
|
|
* - introduce junk memory zone which are then crc-ed in Storage::checksum
|
|
* creating dependency on uninitialized values. */
|
|
class RecordDataBuffer {
|
|
public:
|
|
RecordDataBuffer(KDColor color) : m_color(color), m_active(true) {}
|
|
KDColor color() const {
|
|
return KDColor::RGB16(m_color);
|
|
}
|
|
bool isActive() const { return m_active; }
|
|
void setActive(bool active) { m_active = active; }
|
|
private:
|
|
#if __EMSCRIPTEN__
|
|
/* Record::value() is a pointer to an address inside
|
|
* Ion::Storage::sharedStorage(), and it might be unaligned. However, for
|
|
* emscripten memory representation, loads and stores must be aligned;
|
|
* performing a normal load or store on an unaligned address can fail
|
|
* silently. We thus use 'emscripten_align1_short' type, the unaligned
|
|
* version of uint16_t type to avoid producing an alignment error on the
|
|
* emscripten platform. */
|
|
static_assert(sizeof(emscripten_align1_short) == sizeof(uint16_t), "emscripten_align1_short should have the same size as uint16_t");
|
|
emscripten_align1_short m_color __attribute__((packed));
|
|
#else
|
|
uint16_t m_color __attribute__((packed));
|
|
#endif
|
|
bool m_active;
|
|
};
|
|
private:
|
|
RecordDataBuffer * recordData() const;
|
|
};
|
|
|
|
}
|
|
|
|
#endif
|